Soil Science | Open Access Articles | Digital Commons Network™

Data Repository For "The Influence Of Hydrologic And Salinity Conditions On Drought-Tolerant Great Salt Lake Wetland Plant Species" By Samantha Kurkowski And Karin Kettenring, Samantha Kurkowski

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This greenhouse experiment investigated the effects of salinity (3 levels) and hydrologic condition (5 levels), on the cover and biomass of a single mix of 11 native drought- and salt-tolerant species.

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R Code And Supporting Data For "Fast And Slow Water Handling Strategies Explain Pinyon Pine Decline And Juniper Expansion", Andrew Kulmatiski, Muhammad Faraz Rehman

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This repository contains the datasets, R scripts, HYDRUS-1D model files, weather data, and supporting materials used for the M.S. thesis, "Fast and Slow Water Handling Strategies Explain Pinyon Pine Decline and Juniper Expansion." The study investigated root water uptake and water-use strategies of pinyon pine (Pinus edulis) and Utah juniper (Juniperus osteosperma) using stable isotope tracer experiments, soil water flow modeling, leaf water potential measurements, stomatal conductance measurements, and environmental data collected across an aridity gradient in southern Utah, USA.

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Chemical Analyses Of Soil Samples, Johan Du Toit, Shantell Garrett

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Results of chemical analyses of soil collected in the foothills of the Henry Mountains, south-central Utah, in the fall of 2020.

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Production, Utilization And Quality Of Irrigated Grasses And Legumes In The Mountain West Usa Under Mob Stocking Or Clipping, Jennifer W. Macadam, Brody Maughan, Xin Dai

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Feed is the most costly input for US ruminant livestock production systems, and increasing the utilization efficiency of irrigated forage systems can improve system profitability. This study assessed the production, utilization and quality of 22 intensively managed perennial grasses and legumes. Forages were cultivated as monocultures under irrigation and subjected to similarly intense clipping or mob stocking for two years at six-week intervals between May and September. Grasses and legumes were randomly assigned to 22 adjacent 1.5-m-wide by 9-m-long subplots within each whole plot, and pairs of whole plots were randomly assigned to grazing or clipping management. Seven grasses did …

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Digital Atlas Of The Vascular Plants Of Utah, R. Douglas Ramsey, Leila M. Shultz, Wanda Lindquist, Chris Garrard, Mindy Wheeler

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Locations of 74,755 vascular plant vouchers representing 2,425 species were digitized into a spatial database from the Atlas of the Vascular Plants of Utah (Albee et al. 1988). Source maps consisted of 1:6,000,000-scale shaded relief maps of Utah with points representing collection locations by species. Location points, representing 1 or more specimens, were transposed onto these maps from the approximately 400,000 herbarium records of 3 major universities and federal land management agencies.

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Pariette Wetlands Water, Sediment And Plant Total Selenium Concentration, Colleen P. Jones, Paul R. Grossl, Astrid R. Jacobson

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We measured total Selenium in plants from July through November of 2012 and in water, macroinvertebrates, plants, and sediments from July of 2014 from Pariette Wetlands, Utah, U.S.A. to test for spatial, temporal, plant species and plant tissue distribution of Selenium.

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Nitrogen Budgets And Nitrogen Use Efficiency As Agricultural Performance Indicators In Lake Victoria Basin, Winnie Ntinyari, Joseph Gweyi-Onyango, Mekonnen Giweta, James Mutegi, Benson Mochoge, Generose Nziguheba, Cargele Masso

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Too little nitrogen (N) is a threat to crop productivity and soil fertility in sub-Saharan Africa (SSA). Nitrogen budgets (NB) and nitrogen use efficiency (NUE) are critical tools for assessing N dynamics in agriculture and have received little or no attention in the region. Data were collected from smallholder farmers clustered into two categories, farmers applying and farmers not applying N fertilizers. NB were calculated using the Coupled Human and Natural Systems (CHANS) model approach for field and farm spatial scales. The results showed spatial variabilities in NB and NUE at the field level (maize and rice) across all the …

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Variation Of Soil Physical-Chemical Characteristics In Salt-Affected Soil In The Qarhan Salt Lake, Qaidam Basin, Hui Rong, Tan Huijuan, Li Xinrong, Wang Bingyao

Journal of Arid Land

Soil salinization has adverse effects on the soil physical-chemical characteristics. However, little is known about the changes in soil salt ion concentrations and other soil physical-chemical characteristics within the Qarhan Salt Lake and at different soil depths in the surrounding areas. Here, we selected five sampling sites (S1, S2, S3, S4, and S5) alongside the Qarhan Salt Lake and in the Xidatan segment of the Kunlun Mountains to investigate the relationship among soil salt ion concentrations, soil physical-chemical characteristics, and environmental variables in April 2019. The results indicated that most sites had strongly saline and very strongly saline conditions. The …

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Potential Of Entomocomposting Toward Soil Pathogen Suppression, Dennis Beesigamukama, María Gómez-Brandón, Chrysantus Mbi Tanga

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Waste accumulation and microbial pollution are key environmental challenges in most developing countries. Land filling, the commonest waste disposal method, is not sustainable due to land scarcity and point source pollution. Thus, a large fraction of organic wastes is not properly disposed, yet the conventional methods of waste recycling are less effective. The degradation of waste using insect life stages (entomocomposting) has emerged as a novel tool that is fast, affordable, and sustainable in recycling organic wastes with maximum pathogen suppression. This bioconversion process also generates an organic fertilizer with potential to enhance soil remediation and provide additional benefits on …

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Performance Of Black Soldier Fly Frass Fertiliser On Maize (Zea Mays L.) Growth, Yield, Nutritional Quality, And Economic Returns, C. M. Tanga, D. Beesigamukama, M. Kassie, P. J. Egonyu, Changeh J. Ghemoh, Kiatoko Nkoba, S. Subramanian, A. O. Anyega, S. Ekesi

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Although the black soldier fly frass fertiliser (BSFFF) is globally recognised as a promising and potential high-quality organic fertiliser, there is inadequate information on its impact on the growth performance and nutritional status of maize. Furthermore, no information exist on their combination with mineral fertiliser (NPK) as well as economic impact on maize production. This study evaluated the comparative impact of BSFFF, NPK and commercial organic fertiliser (Evergrow®) on growth, nitrogen use efficiency, yield, nutritional quality, and profitability of maize under greenhouse conditions. The treatments included: (1) sole application of BSFFF, conventional compost of brewers’ spent grain (BSG), Evergrow, and …

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Nitrogen Use Efficiency Trends For Sustainable Crop Productivity In Lake Victoria Basin: Smallholder Farmers' Perspectives On Nitrogen Cycling, Winnie Ntinyari, Joseph Gweyi-Onyango, Mekonnen Giweta, Benson Mochoge, James Mutegi, Generose Nziguheba, Cargele Masso

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Nitrogen Use Efficiency (NUE) is one of the established metrics for benchmarking management of Nitrogen (N) in various systems. Numerous approaches to calculateNUEexist, making it difficult to compare the performances of systems depending on the methodology used. This study adopted the conceptualized framework by European Union Nitrogen Expert Panel (EUNEP) to calculateNUE values for cereal crops to determine future trends for the first time in the Lake Victoria region. Data were collected through in-person interviews among maize and rice smallholder farmers within the Lake Victoria region. Atotal of 293 observations were recorded. Collected data on yield andNfertilizer were used to …

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In Situ Nitrogen Mineralization And Nutrient Release By Soil Amended With Black Soldier Fly Frass Fertilizer, Dennis Beesigamukama, Benson Mochoge, Nicholas Korir, Changeh J. Ghemoh, Sevgan Subramanian, Chrysantus M. Tanga

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Although black soldier fly frass fertilizer (BSFFF) is effective on crop performance, information on nitrogen (N) mineralization and nutrient release capacity of soils amended with BSFFF is lacking. This study utilized field incubation experiments to investigate the ammonification, nitrification, microbial populations, and quantities of nutrients released by soils amended with BSFFF and commercial organic fertilizer (SAFI) for a period equivalent to two maize cropping seasons. For the control treatment, no BSFFF or SAFI was added. Results indicated that most of the N in BSFFF amended soils was available in the ammonium form, while soils treated with SAFI had higher nitrate …

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Perennial Legume Intercrops Provide Multiple Belowground Ecosystem Services In Smallholder Farming Systems, Laurie E. Drinkwater, Charles A.O. Midega, Rachel Awuor, Dickens Nyagol, Zeyaur R. Khan

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Soil degradation is a major underlying cause of poverty and malnutrition in smallholder agrarian communities across the globe. Legume diversification, through polyculture or intercropping, is a strategy that increases yields and income while improving family nutrition. However, the potential for these legume-cereal intercrops to restore soil functions in smallholder fields remains uncertain, with many studies failing to detect increases in soil organic matter (SOM). In sub-Saharan Africa, smallholders typically grow maize either intercropped with short-lived annual food legumes or as a monoculture. Recently, a novel maize system which includes perennial legumes in the genus Desmodium as intercrops, known as “push-pull” …

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Black Soldier Fly-Composted Organic Fertilizer Enhances Growth, Yield, And Nutrient Quality Of Three Key Vegetable Crops In Sub-Saharan Africa, Abel O. Anyega, Nicholas K. Korir, Dennis Beesigamukama, Ghemoh J. Changeh, Kiatoko Nkoba, Sevgan Subramanian, Joop J.A. Van Loon, Marcel Dicke, Chrysantus M. Tanga

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Worldwide, French beans (Phaseolus vulgaris L.), tomato (Solanum lycopersicum L.), and kales (Brassica oleracea L. var. acephala) are considered economically important food crops. There is a rapid decline in their yield due to severe soil degradation. Thus, high commercial fertilizer inputs are crucial, though they remain expensive and inaccessible to resource poor farmers. We investigated the comparative performance of composted black soldier fly frass fertilizer (BSFFF), conventionally composted brewer's spent grain (BSG), commercial organic fertilizer (Evergrow), and mineral [nitrogen, phosphorus, and potassium (NPK)] fertilizer on growth, yield, N use efficiency, and nutritional quality (crude protein, crude fiber, crude fats, ash, …

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Farm‐Scale Assessment Of Maize–Pigeonpea Productivity In Northern Tanzania, E. Mugi-Ngenga, S. Zingore, L. Bastiaans, N. P.R. Anten, K. E. Giller

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Little is known about productivity of smallholder maize–pigeonpea intercropping systems in sub-Saharan Africa. We conducted a survey of 277 farm households in Northern Tanzania to assess socio-economic factors, field management characteristics, and their association with productivity of maize–pigeonpea intercrops. On each farm, crop assessments were focused on a field that the farmer identified as most important for food supply. Variables associated with yields were evaluated using linear regression and regression classification. Biomass production ranged between 1.0 and 16.6 for maize, and between 0.2 and 11.9 t ha−1 for pigeonpea (at maize harvest). The corresponding grain yields ranged between 0.1 and …

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Intercropping Desmodium And Maize Improves Nitrogen And Phosphorus Availability And Performance Of Maize In Kenya, Pierre Celestin Ndayisaba, Shem Kuyah, Charles Aura Odhiambo Midega, Peter Njoroge Mwangi, Zeyaur Rahman Khan

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Low levels of nitrogen (N) and phosphorus (P) in soils in sub-Saharan Africa (SSA) limit maize (Zea mays) production in smallholder farms. We tested the hypothesis that desmodium (Desmodium intortum (Mill.) Urb.), a fodder legume, and food legumes commonly grown with maize in Western Kenya avail N and P and improve the performance of maize in intercrops. We measured available N and P in 15 cm topsoil at 4, 8 and 12 weeks after planting (WAP), and corresponding maize shoot weight in three seasons: 2017 long rains (LR), 2017 short rains (SR), and 2018 LR at Thomas Odhiambo Campus of …

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Socio-Economic Predictors, Soil Fertility Knowledge Domains And Strategies For Sustainable Maize Intensification In Embu County, Kenya, Monicah Wanjiku Mucheru-Muna, Mildred Achieng Ada, Jayne Njeri Mugwe, Franklin Somoni Mairura, Esther Mugi-Ngenga, Shammie Zingore, James Kinyua Mutegi

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Integrated Soil Fertility Management (ISFM) practices are widely recognized as crucial interventions but knowledge-intensive technologies for farmers in Sub-Saharan Africa (SSA). Very few studies have synthesized the knowledge gaps between small-holder practices and recommended ISFM packages. A farm survey was therefore carried out in Runyenjes sub-County of Embu to determine factors influencing the quality of ISFM knowledge considering inorganic fertilizer, organic manure, integrated soil inputs, and improved maize seeds. One hundred small-scale maize farmers were systematically sampled in Embu County, Kenya, using a cross-sectional survey design. The most significant factors shaping the quality of ISFM knowledge (p < 0.05) included gender, age, household size, land under maize, off-farm earnings, maize yield, members involved in farming, farming experience, education level, and farm size. Farmers recorded lower knowledge scores for technical ISFM themes including soil liming, soil testing, fertilizer types, fertilizer functions, curing of organic manure, compost manure management, crop spacing, combination ratios for integrated inputs, and the labor and cost-benefit implications of integrated inputs, revealing important ISFM knowledge gaps. High-quality knowledge of blended fertilizers and DAP use was associated with increased soil testing and soil liming knowledge, respectively. Multivariate analysis of ISFM knowledge items provided a high-quality understanding of the structure of ISFM knowledge among farmers in Embu County, which is useful in developing future ISFM dissemination strategies. Humic nitisol, Fertilizer, ISFM strategies, ISFM knowledge quality, improved seeds, manure

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Assessing And Understanding Non-Responsiveness Of Maize And Soybean To Fertilizer Applications In African Smallholder Farms, Dries Roobroeck, Cheryl A. Palm, Generose Nziguheba, Ray Weil, Bernard Vanlauwe

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Use of mineral fertilizers is essential to enhance crop productivity in smallholder farming systems of Sub-Saharan Africa, but various studies have reported ‘non-responsiveness’ where application of inorganic fertilizers does not lead to satisfactory yield gains. This phenomenon is not well defined nor are its extent and causes well understood. In order to close these knowledge gaps, we assessed the effects of commonly recommended nitrogen (N), phosphorus (P) and/or potassium (K) fertilizer inputs on maize grain and soybean production on farmer fields across prevalent land slope and/or soil texture gradients (2 × 2 matrix) in four agroecosystems over two growing seasons. …

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Science-Based Decision Support For Formulating Crop Fertilizer Recommendations In Sub-Saharan Africa, Jairos Rurinda, Shamie Zingore, Jibrin M. Jibrin, Tesfaye Balemi, Kenneth Masuki, Jens A. Andersson, Mirasol F. Pampolino, Ibrahim Mohammed, James Mutegi, Alpha Y. Kamara, Bernard Vanlauwe, Peter Q. Craufurd

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In sub-Saharan Africa, there is considerable spatial and temporal variability in relations between nutrient application and crop yield, due to varying inherent soil nutrients supply, soil moisture, crop management and germplasm. This variability affects fertilizer use efficiency and crop productivity. Therefore, development of decision systems that support formulation and delivery of site-specific fertilizer recommendations is important for increased crop yield and environmental protection. Nutrient Expert (NE) is a computer-based decision support system, which enables extension advisers to generate field- or area-specific fertilizer recommendations based on yield response to fertilizer and nutrient use efficiency. We calibrated NE for major maize agroecological …

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Soil Quality And Phosphorus Status After Nine Years Of Organic And Conventional Farming At Two Input Levels In The Central Highlands Of Kenya, C. Von Arb, E. K. Bünemann, H. Schmalz, M. Portmann, N. Adamtey, M. W. Musyoka, E. Frossard, A. Fliessbach

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Under temperate climate conditions, organic farming systems show improved soil quality compared to non-organic systems, whereas little long-term research on the impact of organic farming on soil quality has been conducted in sub-Saharan Africa. Within the system comparison (SysCom) project, two long-term field experiments were set up in 2007 in the sub-humid Central Highlands of Kenya to compare organic and conventional farming at two input levels (high input systems with recommended rates of nitrogen (N), phosphorus (P) and pesticides and with irrigation vs. rain-fed low input systems with low N, P and pesticides), with a similar design at both sites. …

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Learning From The Soil's Memory: Tailoring Of Fertilizer Application Based On Past Manure Applications Increases Fertilizer Use Efficiency And Crop Productivity On Kenyan Smallholder Farms, Samuel Njoroge, Antonius G.T. Schut, Ken E. Giller, Shamie Zingore

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The large uncertainty in yield response to fertilizer application within smallholder cropping systems in sub-Saharan Africa (SSA) limits efforts aimed at intensifying crop production based on increased fertilizer application. We assessed the key field-scale cause of variability in maize (Zea mays) grain yield response to fertilizer nitrogen (N), phosphorus (P) and potassium (K) in the Sidindi area of Western Kenya based on past manure application, distance from the homestead, and clay and silt contents. We used data from nutrient omission trials conducted on 23 farms over seven consecutive cropping seasons covering the period 2013–2016, without changing treatments or plot location. …

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Integrated Soil Fertility Management Sequences For Reducing Climate Risk In Smallholder Crop Production Systems In Southern Africa, Hatirarami Nezomba, Florence Mtambanengwe, Jairos Rurinda, Paul Mapfumo

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Climate change, increased climate variability and poor soil fertility are major bio-physical constraints to cropping on smallholder farms in southern Africa. We used the Agricultural Production Systems sIMulator (APSIM) to assess maize yield response to integrated soil fertility management (ISFM) rotational sequences of low-quality organic resources, nitrogen-fixing green manure and grain legumes, and mineral fertilizers under baseline (1960–2005) and projected (2040–2069) climates. APSIM was also employed to evaluate the response of maize yield to the ISFM sequences under a combination of a changing climate, and typical sowing dates and mineral fertilizer application rates for smallholder households of varying resource endowment. …

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Reducing Losses But Failing To Sequester Carbon In Soils – The Case Of Conservation Agriculture And Integrated Soil Fertility Management In The Humid Tropical Agro-Ecosystem Of Western Kenya, Rolf Sommer, Birthe Katharina Paul, John Mukalama, Job Kihara

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Agriculture is a global contributor to greenhouse gas emissions, causing climate change. Soil organic carbon (SOC) sequestration is seen as a pathway to climate change mitigation. But, long-term data on the actual contribution of tropical soils to SOC sequestration are largely absent. To contribute to filling this knowledge gap, we measured SOC in the top 15 cm over 12 years in two agronomic long-term trials in Western Kenya. These trials include various levels – from absence to full adoption – of two widely promoted sustainable agricultural management practices: Integrated Soil Fertility Management (ISFM; i.e. improved varieties, mineral fertilizer and organic …

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Strong Spatial-Temporal Patterns In Maize Yield Response To Nutrient Additions In African Smallholder Farms, Samuel Njoroge, Antonius G.T. Schut, Ken E. Giller, Shamie Zingore

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Large variability in crop responses to macronutrient application at various spatial scales present challenges for developing effective fertilizer recommendations for crop production in smallholder farming systems of sub-Saharan Africa. We assessed maize yield responses to nitrogen (N), phosphorus (P) and potassium (K) application and evaluated relationships between crop responses to N, P and K application and soil analysis data. Nutrient omission trials were conducted on 23 farms located in Sidindi, Western Kenya, selected to be representative of the main soil and management factors in maize based systems in Siaya County. Treatments included a control and PK, NK, NP and NPK …

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Profitability Of Diammonium Phosphate Use In Bush And Climbing Bean-Maize Rotations In Smallholder Farms Of Central Burundi, Marie Chantal Niyuhire, Pieter Pypers, Bernard Vanlauwe, Generose Nziguheba, Dries Roobroeck, Roel Merckx

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Soil fertility decline is a major constraint to bean (Phaseolus vulgaris L.) and maize (Zea mays) production in the Central Highlands of Burundi. Nutrient sources, specifically fertilizers, are paramount to increasing the production in the regions. Hence, improving fertilizer use efficiency is considered as a key factor towards sustainable intensification. The use of grain legumes with low harvest indices, such as climbing beans, are assumed to improve soil fertility and fertilizer use efficiency. This study compares the rotational effects of bush and climbing bean varieties on maize and evaluates the profitability of diammonium phosphate (DAP, 18–46-0) fertilizer in the bean-maize …

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Determinants Of Integrated Soil Fertility Management Technologies Adoption By Smallholder Farmers In The Chinyanja Triangle Of Southern Africa, Powell Mponela, Lulseged Tamene, Gift Ndengu, Ruth Magreta, Job Kihara, Nelson Mango

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Integrated Soil Fertility Management (ISFM) technologies have proven to be viable options for improving land productivity and increasing yield. However, adoption of the set of complementary technologies that are required in ISFM is quite variable and studies tend to focus on single technologies. In this study we used cluster analysis to group technologies and ordered probit to determine the probability of multiple technology adoption. The result show that usage of ISFM in the Chinyanja Triangle (Southern Africa) is grouped into 3 technological sets based on complementarities. The set of nutrient dense technologies of inorganic fertiliser, compost and animal manure (ISFMset3) …

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Understanding Variability In Crop Response To Fertilizer And Amendments In Sub-Saharan Africa, Job Kihara, Generose Nziguheba, Shamie Zingore, Adama Coulibaly, Anthony Esilaba, Vernon Kabambe, Samuel Njoroge, Cheryl Palm, Jeroen Huising

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Improved understanding of soil fertility factors limiting crop productivity is important to develop appropriate soil and nutrient management recommendations in sub-Saharan Africa. Diagnostic trials were implemented in Kenya, Malawi, Mali, Nigeria and Tanzania, as part of the African Soils Information Service (AfSIS) project, to identify soil fertility constraints to crop production across various cropping systems and soil fertility conditions. In each country, one to three sites of 10 km × 10 km were included with each site having 12-31 field trials. The treatments tested included a control, an NPK treatment, three treatments in which the N, P and K nutrients …

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Integrated Soil Fertility Management: Aggregate Carbon And Nitrogen Stabilization In Differently Textured Tropical Soils, R. M. Gentile, B. Vanlauwe, J. Six

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Soil organic matter is important to improve and sustain soil fertility in tropical agroecosystems. The combined use of organic residue and fertilizer inputs is advocated for its positive effects on short-term nutrient supply, but the effect of the integrated use on long-term stabilization of soil organic C and N is still unclear. We conducted a 1.5-y soil incubation experiment with maize (Zea mays) residue and urea fertilizer to examine the stabilization of C and N in four Sub-Saharan African soils differing in texture (sand, sandy loam, clay loam, and clay). The inputs were enriched with 13C and 15N in a …

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Pushing The Envelope? Maize Production Intensification And The Role Of Cattle Manure In Recovery Of Degraded Soils In Smallholder Farming Areas Of Zimbabwe, Leonard Rusinamhodzi, Marc Corbeels, Shamie Zingore, Justice Nyamangara, Ken E. Giller

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Soil fertility decline is a major constraint to crop productivity on smallholder farms in Africa. The objective of this study was to evaluate the long-term (up to nine years) impacts of nutrient management strategies and their local feasibility on crop productivity, soil fertility status and rainfall infiltration on two contrasting soil types and different prior management regimes in Murehwa, Zimbabwe. The nutrient management strategies employed in the study were: a control with no fertiliser, amendments of 100kg Nha-1, 100kg N+lime, three rates of manure application (5, 15 and 25tha-1) in combination with 100kg Nha-1, and three rates of P fertiliser …

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Participatory Evaluation Of Integrated Pest And Soil Fertility Management Options Using Ordered Categorical Data Analysis, Hugo De Groote, Esther Rutto, George Odhiambo, Fred Kanampiu, Zeyaur Khan, Richard Coe, Bernard Vanlauwe

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Maize is becoming the major food crop around Lake Victoria. Major constraints to its production are Striga, stem borer, and declining soil fertility. Innovative integrated technologies have been developed: the 'push-pull' system (intercropping with Desmodium and surrounded by Napier grass), soybean and Crotalaria rotations, and imidazolinone-resistant (IR) maize seed. In 12 demonstration trials in four villages in Siaya and Vihiga districts (Kenya) and two villages in Busia (Uganda) in 2003 and 2004, 504 farmers evaluated all cropping systems and a mono-cropped continuous maize, each cropped with IR or local maize, and supplemented or not with fertilizer, totaling 16 treatments. Farmers …

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Full-Text Articles in Soil Science

Data Repository For "The Influence Of Hydrologic And Salinity Conditions On Drought-Tolerant Great Salt Lake Wetland Plant Species" By Samantha Kurkowski And Karin Kettenring, Samantha Kurkowski

Browse all Datasets

R Code And Supporting Data For "Fast And Slow Water Handling Strategies Explain Pinyon Pine Decline And Juniper Expansion", Andrew Kulmatiski, Muhammad Faraz Rehman

Browse all Datasets

Chemical Analyses Of Soil Samples, Johan Du Toit, Shantell Garrett

Browse all Datasets

Production, Utilization And Quality Of Irrigated Grasses And Legumes In The Mountain West Usa Under Mob Stocking Or Clipping, Jennifer W. Macadam, Brody Maughan, Xin Dai

Browse all Datasets

Digital Atlas Of The Vascular Plants Of Utah, R. Douglas Ramsey, Leila M. Shultz, Wanda Lindquist, Chris Garrard, Mindy Wheeler

Browse all Datasets

Pariette Wetlands Water, Sediment And Plant Total Selenium Concentration, Colleen P. Jones, Paul R. Grossl, Astrid R. Jacobson

Browse all Datasets

Nitrogen Budgets And Nitrogen Use Efficiency As Agricultural Performance Indicators In Lake Victoria Basin, Winnie Ntinyari, Joseph Gweyi-Onyango, Mekonnen Giweta, James Mutegi, Benson Mochoge, Generose Nziguheba, Cargele Masso

All Peer-Reviewed Publications

Variation Of Soil Physical-Chemical Characteristics In Salt-Affected Soil In The Qarhan Salt Lake, Qaidam Basin, Hui Rong, Tan Huijuan, Li Xinrong, Wang Bingyao

Journal of Arid Land

Potential Of Entomocomposting Toward Soil Pathogen Suppression, Dennis Beesigamukama, María Gómez-Brandón, Chrysantus Mbi Tanga

All Peer-Reviewed Publications

Performance Of Black Soldier Fly Frass Fertiliser On Maize (Zea Mays L.) Growth, Yield, Nutritional Quality, And Economic Returns, C. M. Tanga, D. Beesigamukama, M. Kassie, P. J. Egonyu, Changeh J. Ghemoh, Kiatoko Nkoba, S. Subramanian, A. O. Anyega, S. Ekesi

All Peer-Reviewed Publications

Nitrogen Use Efficiency Trends For Sustainable Crop Productivity In Lake Victoria Basin: Smallholder Farmers' Perspectives On Nitrogen Cycling, Winnie Ntinyari, Joseph Gweyi-Onyango, Mekonnen Giweta, Benson Mochoge, James Mutegi, Generose Nziguheba, Cargele Masso

All Peer-Reviewed Publications

In Situ Nitrogen Mineralization And Nutrient Release By Soil Amended With Black Soldier Fly Frass Fertilizer, Dennis Beesigamukama, Benson Mochoge, Nicholas Korir, Changeh J. Ghemoh, Sevgan Subramanian, Chrysantus M. Tanga

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Perennial Legume Intercrops Provide Multiple Belowground Ecosystem Services In Smallholder Farming Systems, Laurie E. Drinkwater, Charles A.O. Midega, Rachel Awuor, Dickens Nyagol, Zeyaur R. Khan

All Peer-Reviewed Publications

All Peer-Reviewed Publications

Farm‐Scale Assessment Of Maize–Pigeonpea Productivity In Northern Tanzania, E. Mugi-Ngenga, S. Zingore, L. Bastiaans, N. P.R. Anten, K. E. Giller

All Peer-Reviewed Publications

Intercropping Desmodium And Maize Improves Nitrogen And Phosphorus Availability And Performance Of Maize In Kenya, Pierre Celestin Ndayisaba, Shem Kuyah, Charles Aura Odhiambo Midega, Peter Njoroge Mwangi, Zeyaur Rahman Khan

All Peer-Reviewed Publications

Socio-Economic Predictors, Soil Fertility Knowledge Domains And Strategies For Sustainable Maize Intensification In Embu County, Kenya, Monicah Wanjiku Mucheru-Muna, Mildred Achieng Ada, Jayne Njeri Mugwe, Franklin Somoni Mairura, Esther Mugi-Ngenga, Shammie Zingore, James Kinyua Mutegi

All Peer-Reviewed Publications

Assessing And Understanding Non-Responsiveness Of Maize And Soybean To Fertilizer Applications In African Smallholder Farms, Dries Roobroeck, Cheryl A. Palm, Generose Nziguheba, Ray Weil, Bernard Vanlauwe

All Peer-Reviewed Publications

All Peer-Reviewed Publications

Soil Quality And Phosphorus Status After Nine Years Of Organic And Conventional Farming At Two Input Levels In The Central Highlands Of Kenya, C. Von Arb, E. K. Bünemann, H. Schmalz, M. Portmann, N. Adamtey, M. W. Musyoka, E. Frossard, A. Fliessbach

All Peer-Reviewed Publications

Learning From The Soil's Memory: Tailoring Of Fertilizer Application Based On Past Manure Applications Increases Fertilizer Use Efficiency And Crop Productivity On Kenyan Smallholder Farms, Samuel Njoroge, Antonius G.T. Schut, Ken E. Giller, Shamie Zingore

All Peer-Reviewed Publications

Integrated Soil Fertility Management Sequences For Reducing Climate Risk In Smallholder Crop Production Systems In Southern Africa, Hatirarami Nezomba, Florence Mtambanengwe, Jairos Rurinda, Paul Mapfumo

All Peer-Reviewed Publications

Reducing Losses But Failing To Sequester Carbon In Soils – The Case Of Conservation Agriculture And Integrated Soil Fertility Management In The Humid Tropical Agro-Ecosystem Of Western Kenya, Rolf Sommer, Birthe Katharina Paul, John Mukalama, Job Kihara

All Peer-Reviewed Publications

Strong Spatial-Temporal Patterns In Maize Yield Response To Nutrient Additions In African Smallholder Farms, Samuel Njoroge, Antonius G.T. Schut, Ken E. Giller, Shamie Zingore

All Peer-Reviewed Publications

Profitability Of Diammonium Phosphate Use In Bush And Climbing Bean-Maize Rotations In Smallholder Farms Of Central Burundi, Marie Chantal Niyuhire, Pieter Pypers, Bernard Vanlauwe, Generose Nziguheba, Dries Roobroeck, Roel Merckx

All Peer-Reviewed Publications

Determinants Of Integrated Soil Fertility Management Technologies Adoption By Smallholder Farmers In The Chinyanja Triangle Of Southern Africa, Powell Mponela, Lulseged Tamene, Gift Ndengu, Ruth Magreta, Job Kihara, Nelson Mango

All Peer-Reviewed Publications

Understanding Variability In Crop Response To Fertilizer And Amendments In Sub-Saharan Africa, Job Kihara, Generose Nziguheba, Shamie Zingore, Adama Coulibaly, Anthony Esilaba, Vernon Kabambe, Samuel Njoroge, Cheryl Palm, Jeroen Huising

All Peer-Reviewed Publications

Integrated Soil Fertility Management: Aggregate Carbon And Nitrogen Stabilization In Differently Textured Tropical Soils, R. M. Gentile, B. Vanlauwe, J. Six

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Pushing The Envelope? Maize Production Intensification And The Role Of Cattle Manure In Recovery Of Degraded Soils In Smallholder Farming Areas Of Zimbabwe, Leonard Rusinamhodzi, Marc Corbeels, Shamie Zingore, Justice Nyamangara, Ken E. Giller

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Participatory Evaluation Of Integrated Pest And Soil Fertility Management Options Using Ordered Categorical Data Analysis, Hugo De Groote, Esther Rutto, George Odhiambo, Fred Kanampiu, Zeyaur Khan, Richard Coe, Bernard Vanlauwe

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