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Articles 1 - 30 of 47
Full-Text Articles in Life Sciences
Bale Grazing To Improve Soil Fertility In Kentucky Pastures, N. Roy, J. W. Lehmkuhler
Bale Grazing To Improve Soil Fertility In Kentucky Pastures, N. Roy, J. W. Lehmkuhler
IGC Proceedings (1997-2023)
A long-term project on a small Kentucky beef farm has demonstrated that bale grazing is an effective means of improving soil fertility. With the cooperation of a beef cattle producer, Extension personnel have been able to measure improvements in soil fertility using both high density and moderate density bale grazing practices. Initial efforts demonstrate that high density bale grazing improved soil fertility quickly by increasing soil test phosphorus from 15 to 45 ppm and potassium from 52 to 175 ppm on Melich III soil test extraction method. High density bale grazing was also shown to serve as a strategy to …
Assessing The Nutrient Status Of Alfalfa Stands In Kentucky, William R. Fleming, Christopher D. Teutsch, Edwin L. Ritchey, John H. Grove
Assessing The Nutrient Status Of Alfalfa Stands In Kentucky, William R. Fleming, Christopher D. Teutsch, Edwin L. Ritchey, John H. Grove
IGC Proceedings (1997-2023)
Alfalfa (Medicago sativa L.) is a perennial forage legume and is sometimes referred to as the “Queen of Forages” due to its high nutritional value. Alfalfa is commonly produced as hay for use in the dairy and equine industries. Alfalfa yield increased exponentially from the 1950s to the1980s due to new breeding and management innovations. However, during the 1980s yields plateaued at around 7.5 Mg/ha and remain there today. The overarching goal of this study was to determine the role of soil fertility in the observed yield plateau. Fifty alfalfa stands in Kentucky were sampled to gather information about …
Contribution Of Grasses To Soil Fertility And Improved Livelihoods, G. P. Ojha, B. K. Dhital
Contribution Of Grasses To Soil Fertility And Improved Livelihoods, G. P. Ojha, B. K. Dhital
IGC Proceedings (1997-2023)
Vegetable farming is increasing in Nepal as it provides better economic returns than growing other crops, especially in areas that have easy access to markets. Vegetable farming demands intensive care and balanced supplies of nutrients. Therefore, farmers cultivate vegetables near their residence and because vegetable growing is more profitable, farmers allocate more resources, including organic manure, for its cultivation. In general, using more organic manure on vegetables means that less organic manure is available for non-vegetable crops and farms, unless alternative arrangements are made for producing more organic manure or manure of higher quality.
Long-Term (9-Year) Response Of Two Semiarid Grasslands To Prescribed Fire In The Southwestern Usa, R. L. Pendleton, B. K. Pendleton, C. S. White
Long-Term (9-Year) Response Of Two Semiarid Grasslands To Prescribed Fire In The Southwestern Usa, R. L. Pendleton, B. K. Pendleton, C. S. White
IGC Proceedings (1997-2023)
Historically, arid grasslands of SW USA experienced fire return intervals of 5-10 years. During the last 100 years, however, fire has been a rare event. Recent expansion of woody plants in arid grasslands has prompted managers to re-introduce fire as a tool to reduce abundance of woody plants and maintain perennial grass cover. The use of fire in desert grasslands poses unique challenges, however, due to extreme variability in rainfall patterns. Our research examines vegetation response to repeat fire in 2 desert grassland ecotones near Albuquerque, New Mexico (35.05o N 106.60o W).
Wayne E. Sabbe Arkansas Soil Fertility Studies 2022, Nathan A. Slaton, Mike Daniels
Wayne E. Sabbe Arkansas Soil Fertility Studies 2022, Nathan A. Slaton, Mike Daniels
Arkansas Agricultural Experiment Station Research Series
Rapid technological changes in crop management and production require that the research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil-test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.
Vermicompost Versus Traditional Compost Amendments Leads To Different Soil Health Outcomes In A Mediterranean Vineyard, Elizabeth L. Luck
Vermicompost Versus Traditional Compost Amendments Leads To Different Soil Health Outcomes In A Mediterranean Vineyard, Elizabeth L. Luck
Master of Science in Environmental Sciences and Management Projects
Compost application has become a common practice in vineyard management to increase soil and crop health, however, the environmental externalities such as greenhouse gas emissions (GHG) from cropping systems that utilize organic fertilizers, such as compost, is uncertain. Vermicompost, which is compost created through the digestion of organic matter by earthworms, and its related ‘extract’ are commonly thought to provide more benefits for soil and crop health compared to standard compost. However, organic fertilizers such as vermicompost, vermicompost extract, and compost have not been compared in their effects on soil health in Mediterranean vineyards. In this two-year study, I assessed …
Wayne E. Sabbe Arkansas Soil Fertility Studies 2021, Nathan A. Slaton
Wayne E. Sabbe Arkansas Soil Fertility Studies 2021, Nathan A. Slaton
Arkansas Agricultural Experiment Station Research Series
Rapid technological changes in crop management and production require that the research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil-test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.
Soil Nitrous Oxide (N2O) Emission From Integrated Soil Fertility Management In Maize (Zea Mays L.) Cropping Systems, R. Rogito, N. Karanja, L. Merbold, M. Necpalova, J. Six
Soil Nitrous Oxide (N2O) Emission From Integrated Soil Fertility Management In Maize (Zea Mays L.) Cropping Systems, R. Rogito, N. Karanja, L. Merbold, M. Necpalova, J. Six
IGC Proceedings (1997-2023)
Integrated Soil Fertility Management (ISFM) has been recommended to address challenges of low soil fertility by incorporating locally available organic resources (ORs) together with inorganic nitrogen (N) fertilizers. Despite ISFM success in field trials, there is limited information on ORs contribution to atmospheric greenhouse gas concentrations through N2O emission. A short-term field study was conducted at two sites with different soil types; silt loam (Aludeka) and silty-clay soil (Sidada) to assess the influence of selected ORs on soil N2O emissions. The ORs treatments included; Calliandra carothyrsus (CL), farmyard manure (FYM) and maize stover (MS) with (+N) …
Green Canopy Cover Percentage As A Method For Quantifying Andropogon Virginicus (Broomsedge) Reduction Through Fertilizer Applications In A Cool Season Hay Production System, Jordyn A. Bush, Jimmy C. Henning, Christopher D. Teutsch
Green Canopy Cover Percentage As A Method For Quantifying Andropogon Virginicus (Broomsedge) Reduction Through Fertilizer Applications In A Cool Season Hay Production System, Jordyn A. Bush, Jimmy C. Henning, Christopher D. Teutsch
IGC Proceedings (1997-2023)
Remote sensing has been used to measure green canopy cover for a variety of agronomic purposes. This study explores the use of digital imagery as a method to quantify warm and cool season grasses in a hay production system. Due to alternate growth periods, cool and warm season grasses show greener color in different seasons. These seasonal color shifts provide an opportunity to measure their respective percentages when growing together in a system. This study was conducted in a hay field that was originally dominated by cool season grasses including tall fescue (Festuca arundinacea) and Kentucky bluegrass ( …
Agropastoral Systems An Alternative To Revert Pasture Degradation In The Cerrados Of Brazil: Preliminary Results, Manuel C. M. Macedo, J. A. M. Bono, A. H. Zimmer, F. P. Costa, Tsutomu Kanno, Cesar Heraclides Behling Miranda, A. N. Kichel
Agropastoral Systems An Alternative To Revert Pasture Degradation In The Cerrados Of Brazil: Preliminary Results, Manuel C. M. Macedo, J. A. M. Bono, A. H. Zimmer, F. P. Costa, Tsutomu Kanno, Cesar Heraclides Behling Miranda, A. N. Kichel
IGC Proceedings (1997-2023)
A long term experiment was set to test the hypothesis that agropastoral systems could improve crop and animal production, being more profitable and sustainable relative to economical, biological and environmental aspects, than continuous and traditional crop and grazing pasture systems. Five farming systems are being tested: two traditional (continuous soybean annual cropping and continuous pasture cropping) and three agropastoral systems (two combinations of four by four years of rotational crop-pasture systems and one by three years of crop-pasture rotation). Animal production in continuous pasture cropping measured as liveweight gain/ha (LWG) are declining along the years in the sub-treatment without fertilizer …
Potential Of Crop Rotation Using Forages In The Tropics, P. L. Mafongoya
Potential Of Crop Rotation Using Forages In The Tropics, P. L. Mafongoya
IGC Proceedings (1997-2023)
Soil fertility is a fundamental biophysical root cause of food insecurity sub-Saharan Africa. Low quality crop residues and grasses during the dry season also limit animal productivity. Forage legumes (herbaceous and tree legumes) have great potential to increase crop animal productivity. Technologies have been developed over the past 3 decades to fully integrate forage legumes into farming. Most of these technologies are still on shelves with low adoption by farmers. Rhe role of forage legumes in nutrient cycling is reviewed in this paper. The factor limiting adoption will also be discussed. Innovative dissemination pathways to increase adoption will be suggested.
Forage Quality And The Environment, C. E. Lascano, A. Schmidt, R. Barahona
Forage Quality And The Environment, C. E. Lascano, A. Schmidt, R. Barahona
IGC Proceedings (1997-2023)
The influence of environmental factors on forage quality of temperate and tropical grasses has been reviewed by several authors, who summarized how light, temperature, drought and soil nutrients influence chemical composition, and digestibility of forages grown in contrasting areas of the world. The effects of season of the year on forage growth, grazing behavior and animal performance have also been the subject of numerous papers and reviews. However, there are few recent reviews that summarize how changes in climatic and edaphic factors influence forage quality of legumes with variable levels of condensed tannins (CT), which are important secondary compounds in …
Effects Of Agroforestry Practices On Soil Properties In The Drylands Of Eastern Kenya, Nicholas Syano Mutuku, Moses M. Nyangito, Geoffrey Kironchi, Oliver Vivian Wasonga
Effects Of Agroforestry Practices On Soil Properties In The Drylands Of Eastern Kenya, Nicholas Syano Mutuku, Moses M. Nyangito, Geoffrey Kironchi, Oliver Vivian Wasonga
IGC Proceedings (1997-2023)
Drylands, which are home to about 2 billion people face a myriad of problems among them low land productivity. Agroforestry is one of the land use practices that is perceived to be sustainable with beneficial effects on soil properties. However, the effects of agroforestry practices on soils especially in the drylands have rarely been quantified and studied in details. The study determined the effects of selected agroforestry practices on soil properties in Makueni County of Kenya where agroforestry has been promoted by various organizations. Four soil samples were collected at 0-15cm, 15-30cm, 30-45cm and 45-60cm depths in a zigzag pattern …
The Effect Of Fermented Saw-Dust Pig Manure On Forage Mineral Contents And Soil Fertility In Cheju Volcanic Ash Soil, M. C. Kim, T. G. Kim
The Effect Of Fermented Saw-Dust Pig Manure On Forage Mineral Contents And Soil Fertility In Cheju Volcanic Ash Soil, M. C. Kim, T. G. Kim
IGC Proceedings (1997-2023)
Studies were carried out to investigate the change of soil characteristics and pasture minerals as affected by fermented saw-dust pig manure(FSM) applied to mixed pasture of a brown volcanic ash soil during the period from October 1996 to October 1998. Pasture mixed with orchardgrass (Dactylis glomerata L.) and white clover (Trifolium repens L.) was treated with N 200kg/ha + P 300kg/ha +K 200kg/ha(T1), N 100kg/ha + 10 ton/ha FSM(T2), FSM 10 ton/ha(T3), 20ton/ha FSM(T4), 40ton/ha FSM(T5) or 80ton/ha FSM(T6). K and P contents of mixed pasture in the 3rd year after sowing increased significantly with increasing levels of …
Characterization Of Soil Properties Under Legume And Non‐Legume Tree Canopies Occurring In Signal Grass (Brachiaria Decumbens Stapf.) Pastures, José C. B. Dubeux Jr., M. A. Lira, M. V. F. Santos, D. M. Barros, M. A. Silva, Alexandre C. L. De Mello
Characterization Of Soil Properties Under Legume And Non‐Legume Tree Canopies Occurring In Signal Grass (Brachiaria Decumbens Stapf.) Pastures, José C. B. Dubeux Jr., M. A. Lira, M. V. F. Santos, D. M. Barros, M. A. Silva, Alexandre C. L. De Mello
IGC Proceedings (1997-2023)
No abstract provided.
Exploitation Enhancement Of Buffaloes Manure Application Vs Conventional Cultivation In Intensive Two Forage Cropping Models Per Year--Results On Agronomic Purposes, Pasquale Martiniello, E. Sabia, E. Rossi, S. Concetti
Exploitation Enhancement Of Buffaloes Manure Application Vs Conventional Cultivation In Intensive Two Forage Cropping Models Per Year--Results On Agronomic Purposes, Pasquale Martiniello, E. Sabia, E. Rossi, S. Concetti
IGC Proceedings (1997-2023)
No abstract provided.
The Effect Of Different Interval Between Pasture Belts On Water And Soil Conservation, Ruiqing Ye, Bizhi Huang, Xiping Yuan, Shaowu Long, Qingmin Chen, Xinkui Fan
The Effect Of Different Interval Between Pasture Belts On Water And Soil Conservation, Ruiqing Ye, Bizhi Huang, Xiping Yuan, Shaowu Long, Qingmin Chen, Xinkui Fan
IGC Proceedings (1997-2023)
No abstract provided.
The Soil Improvement Effect Of Afforestation In Grassland--Take Gegentala Grassland As Example, Zhongju Meng, Yong Gao, Deren Yan
The Soil Improvement Effect Of Afforestation In Grassland--Take Gegentala Grassland As Example, Zhongju Meng, Yong Gao, Deren Yan
IGC Proceedings (1997-2023)
No abstract provided.
Residue Effects Of Animal Manures On Forage Production And Soil Fertility After Receiving Longterm Of Manure Application, Fu‐Hsing Hsu, Kuoyuan Hong, Chihsin Lu
Residue Effects Of Animal Manures On Forage Production And Soil Fertility After Receiving Longterm Of Manure Application, Fu‐Hsing Hsu, Kuoyuan Hong, Chihsin Lu
IGC Proceedings (1997-2023)
No abstract provided.
Effect Of Sod‐Production On Soil Qualities In Beijing Areas, Jianyu Cui, Kangguo Mu, Yajia Liu, Lin Hu, Fusuo Zhang
Effect Of Sod‐Production On Soil Qualities In Beijing Areas, Jianyu Cui, Kangguo Mu, Yajia Liu, Lin Hu, Fusuo Zhang
IGC Proceedings (1997-2023)
No abstract provided.
Spatial Heterogeneity Of Soil Fertility, Plant Biomass, And Producitivty In Grasslands, Masae Shiyomi, Jun Chen
Spatial Heterogeneity Of Soil Fertility, Plant Biomass, And Producitivty In Grasslands, Masae Shiyomi, Jun Chen
IGC Proceedings (1997-2023)
No abstract provided.
The Significance Of Nomadic Pastoralism For Sustaining Soil Fertility In Northern Karnataka, India, Athani B., Gopikrishna, N. Kuruba
The Significance Of Nomadic Pastoralism For Sustaining Soil Fertility In Northern Karnataka, India, Athani B., Gopikrishna, N. Kuruba
IGC Proceedings (1997-2023)
Pastoralist groups in India, including the Raika of Rajasthan, Pullikulum cattle breeders in Tamil Nadu, and groups such as the Dhangar, Kuruba and Kuruma of the Deccan Plateau realize a major proportion of their income from penning their herds and flocks on farmers’ fields. Focusing on shepherds from Northern Karnataka, this paper makes a first attempt at calculating the impact of penning on livelihoods, soil fertility and the national economy.
Competition Between Lolium Perenne L. And Agrostis Capillaris L. Growing Under Different Light Regimes As Response To Fertiliser Addition In A Degraded Pasture, Paulina Flores, Ignacio F. López, Peter D. Kemp, José Dörner
Competition Between Lolium Perenne L. And Agrostis Capillaris L. Growing Under Different Light Regimes As Response To Fertiliser Addition In A Degraded Pasture, Paulina Flores, Ignacio F. López, Peter D. Kemp, José Dörner
IGC Proceedings (1997-2023)
At the field level plants can experience solar irradiance fluctuations caused by cloud cover or canopy shading. The majority of the research in this area has been done on forestry/pastoral systems using artificial structures so that the pasture has the desired light level (Peri et al. 2006). However, the effect of a change from high to low irradiance on the seasonal plant growth and production in a degraded pastoral system has not been previously studied, especially when fluctuating light regimes are involved. The aims of this study were to evaluate tillering dynamics of Lolium perenne L. (Lp) and Agrostis …
Soil Fertility Under Grassland Compared To Other Land Uses In Acid Soil Of Himachal Pradesh, India, Sharmistha Pal, Pankaj Panwar, D. R. Bhardwaj
Soil Fertility Under Grassland Compared To Other Land Uses In Acid Soil Of Himachal Pradesh, India, Sharmistha Pal, Pankaj Panwar, D. R. Bhardwaj
IGC Proceedings (1997-2023)
In the last decades severe changes in land use occurred in tropical countries, due to increasing population and their demand for food resources. Forest land is rapidly converted into agriculture or pastureland which may cause significant changes in soil fertility. Land-use exerts significant effect on nutrient availability and may also influence secondary succession and biomass production (Lu et al., 2002). Nutrient cycling in agroforestry is in between natural forest ecosystems of the tropics and most of the agricultural systems with are ‘‘leaky’’ having higher nutrient losses. Research indicated that decline of soil organic matter may occur due to conversion …
Effect Of Grazing On Soil Fertility And Trace Elements Of Temperate Desert Steppe In Northwestern China, T. Jiao, J. P. Wu, W. X. Cao, J. Qi, S. G. Zhao
Effect Of Grazing On Soil Fertility And Trace Elements Of Temperate Desert Steppe In Northwestern China, T. Jiao, J. P. Wu, W. X. Cao, J. Qi, S. G. Zhao
IGC Proceedings (1997-2023)
Grazing is the dominant land use of temperate desert steppe in northwestern China. It is well established that the grazing process has impacts on plant production and biodiversity (Li 1997), but less is known about the effects of grazing chemical characteristics of grassland soils. Livestock feeding activities, especially the provision of supplementary sources, may influence pasture nutrient cycle, and in turn change the chemical composition of the grassland soil (Rong et al. 2001). Soil fertility may be affected by the type use and grazing intensities because these may cause alterations in soil physical and chemical properties as well as …
Burning With Potential: Understanding The Relationship Between Biochar And Agriculture Of The Northern Glaciated Plains Ecoregion, Kaitlyn Abrahamson
Burning With Potential: Understanding The Relationship Between Biochar And Agriculture Of The Northern Glaciated Plains Ecoregion, Kaitlyn Abrahamson
Electronic Theses and Dissertations
Achieving global sustainable agriculture is one of the most incredible challenges of this century, yet many continue to try to solve this problem through the development of precision technologies. Biotechnologies, such as biochar, can perform like a precision technology while protecting agricultural land from soil erosion and fertility loss. The Northern Glaciated Plains ecoregion of the United States is little researched in the benefits from the use of biochar through improved soil nutrient capture and water retention, crop health improvements, and yield increases. The study plot has four sections of corn stover biochar and eight sections of control sections. This …
Seed Rain Of A Native Pasture Under A Range Of Grazing And Fertiliser Regimes, Zhongnan Nie, Reto Zollinger
Seed Rain Of A Native Pasture Under A Range Of Grazing And Fertiliser Regimes, Zhongnan Nie, Reto Zollinger
IGC Proceedings (1997-2023)
In recent years, deferred grazing (no defoliation of pastures for a period generally from spring to late summer or autumn) has been widely adopted to rejuvenate degraded native pastures in marginal land classes such as steep hill country in western Victoria, Australia. One of the important features of deferred grazing is the increase of seed production over summer and autumn, which could potentially lead to natural regeneration and improved groundcover by pasture plants (Nie et al. 1999). While increasing seed numbers in the soil seed bank following deferred grazing were reported (Nie and Mitchell 2006), there has been little …
Residual Soil Phosphorus In Tropical Oxisols: An Opportunity To Enhance Fertilizer Use Efficiency?, Lauren Bomeisl
Residual Soil Phosphorus In Tropical Oxisols: An Opportunity To Enhance Fertilizer Use Efficiency?, Lauren Bomeisl
Graduate College Dissertations and Theses
Phosphorus (P) is essential to life on Earth and often the limiting nutrient in agricultural systems. P fertilizer is thus an essential resource to maintain food security. In the last half century, agricultural intensification has led to an increase in P fertilizer consumption from 4.6 to 17.5 Tg of P/year to meet rising global food demand. Mineral P (i.e., phosphate rock) is a non-renewable resource in the context of the Anthropocene, and its price is vulnerable to global market fluctuations. Increased efficiency of P use on farms is considered the most effective strategy to conserve P. The soybean industry demands …
Evaluation Of Controlled-Release Nitrogen And Potassium Fertilizer In Louisiana Sugarcane Production, Samuel Kwakye
Evaluation Of Controlled-Release Nitrogen And Potassium Fertilizer In Louisiana Sugarcane Production, Samuel Kwakye
LSU Master's Theses
Sugarcane (Saccharum spp) production is an integral part of Louisiana's economy. Proper fertilizer management, particularly nitrogen (N) and potassium (K), optimizes sugarcane production. An experiment was established in 2015 at the LSU AgCenter Sugar Research Station in St. Gabriel, Louisiana to: (1) assess the effect of N and K fertilizer sources on sugarcane yield and quality parameters, and (2) monitor the changes in inorganic N and K levels in the soil at different sugarcane growth stages. The experiment was arranged in a randomized complete block design on a Sharkey clay soil and complete randomized design on a Commerce …
Defining The Potassium Nutritional Requirements And Distribution Among Plant Parts Of Representative Soybean Cultivars From Different Maturity Groups, Md. Rasel Parvej
Defining The Potassium Nutritional Requirements And Distribution Among Plant Parts Of Representative Soybean Cultivars From Different Maturity Groups, Md. Rasel Parvej
Graduate Theses and Dissertations
The potassium (K) requirement of soybean [Glycine max (L.) Merr.] was investigated to determine whether cultivar sensitivity to K deficiency was affected by growth habit (determinate or indeterminate) and how cultivars from each growth habit accumulate and distribute K among plant structures. We also diagnosed K deficiency across reproductive growth stages (R2-6) using trifoliolate leaf- and petiole-K concentrations and at harvest (R8) using seed-K concentration. Soybean responded similarly to K deficiency in terms of yield, selected yield components, and seed-K concentration, regardless of growth habit. The yield loss from K deficiency was greatest on the middle to upper nodes of …