Digital Commons Network^™

Effects Of Rootstock And Location On Open Field ‘Bhn 589’ And ‘Nebraska Wedding’ Grafted Tomato Yield, Raihanah H. Shonerd, Ashley A. Thompson, Samuel E. Wortman

Department of Agronomy and Horticulture: Faculty Publications

Grafted tomato (Solanum lycopersicum) production is popular, particularly in high tunnels, because grafted plants can mitigate soilborne disease incidence in highly infested soils and increase water and nutrient use efficiency and crop yield and quality. However, these potential benefits are not as well documented in open field production systems with less disease pressure. The objective of this study was to quantify the effect of tomato grafting on fruit yield, number, and size across 2 years (2018 and 2019) and three diverse open-field production environments in Nebraska (Lincoln, North Platte, and Dwight). At each location, a scion from one …

Evaluation Of Land Preparation Methods For Soil Stabilization, Revegetation, And Renewed Productivity In Semi-Arid Climates, Jarrett Lardy, North Dakota State University, Miranda Meehan, Aaron L. M. Daigh, James Staricka, Nathan Derby

Department of Agronomy and Horticulture: Faculty Publications

In the Williston Basin, land-preparation treatments have not been compared in side-by-side trials to evaluate performance for parameters such as runoff, erosion, and vegetation establishment. Thus, four treatments of wheat-straw crimping, land imprinting, wood-fiber hydromulch, and the combination of land imprinting and hydromulch were evaluated against a bare soil control in a replicated and randomized completed block field experiment near Williston, ND. Rainfall simulations were performed in September 2020 and June 2021 to examine the effectiveness of the treatments to reduce runoff and sediment losses. Vegetation establishment was also evaluated in August 2021. The wheat straw treatment reduced the equivalent …

Irrigation Increases On-Farm Soybean Yields In Water-Limited Environments Without A Trade-Off In Seed Protein Concentration, Walter D. Carciochi, Patricio Grassini, Seth Naeve, James E. Specht, Mitiku Mamo, Ron Seymour, Aaron Nygren, Nathan Mueller, Sarah Sivits, Christopher A. Proctor, Jenny Rees, Todd Whitney, N. Cafaro La Menza

Department of Agronomy and Horticulture: Faculty Publications

Context or problem: A trade-off between seed protein concentration (SPC) and yield has been reported for soybean. Therefore, assessing management practices that can nullify this trade-off is relevant to avoid further declines in SPC in the future as yield continues to increase. While the positive effect of irrigation on yield is well documented, only a few studies have assessed the impact of irrigation on SPC, showing conflicting results.

Objective or research question: The objective was to determine if the trade-off between seed yield and SPC persists when irrigation is applied and how management, soil, and weather factors influence the trade-off. …

Deleterious Mutations Predicted In The Sorghum (Sorghum Bicolor) Maturity (Ma) And Dwarf (Dw) Genes From Whole‑Genome Resequencing, Nathan P. Grant, John J. Toy, Deanna L. Funnell, Scott E. Sattler

Department of Agronomy and Horticulture: Faculty Publications

In sorghum [Sorghum bicolor (L.) Moench] the Maturity (Ma1, Ma2, Ma3, Ma4, Ma5, Ma6) and Dwarf (Dw1, Dw2, Dw3, Dw4) loci, encode genes controlling flowering time and plant height, respectively, which are critical for designing sorghum ideotypes for a maturity timeframe and a harvest method. Publicly available whole-genome resequencing data from 860 sorghum accessions was analyzed in silico to identify genomic variants at 8 of these loci (Ma1, Ma2, Ma3, Ma5, Ma6, Dw1, Dw2, Dw3) to identify novel loss …

The Silver Bullet That Wasn’T: Rapid Agronomic Weed Adaptations To Glyphosate In North America, Christopher Landau, Kevin Bradley, Erin Burns, Michael Flessner, Karla Gage, Aaron Hager, Joseph Ikley, Prashant Jha, Amit Jhala, Paul O. Johnson, William Johnson, Sarah Lancaster, Travis Legleiter, Dwight Lingenfelter, Mark Loux, Eric Miller, Jason Norsworthy, Micheal Owen, Scott Nolte, Debalin Sarangi, Peter Sikkema, Christy Sprague, Mark Vangessel, Rodrigo Werle, Bryan Young, Martin M. Williamsii

Department of Agronomy and Horticulture: Faculty Publications

The rapid adoption of glyphosate-resistant crops at the end of the 20th century caused a simplification of weed management that relied heavily on glyphosate for weed control. However, the effectiveness of glyphosate has diminished. A greater understanding of trends related to glyphosate use will shed new light on weed adaptation to a product that transformed global agriculture. Objectives were to (1) quantify the change in weed control efficacy from postemergence (POST) glyphosate use on troublesome weeds in corn and soybean and (2) determine the extent to which glyphosate preceded by a preemergence (PRE) improved the efficacy and consistency of weed …

Pestfacts Wa Issue 19 - October 2023, Alan Lord, Cindy L. Webster, Daniel Huberli, Kylie Chambers

PestFacts WA

PestFacts WA Issue 19 - October 2023 contents:

• Native budworm monitoring and management in maturing crops
• Barley leaf rust
• Fusarium crown rot

Assessing The Performance Of Agricultural Systems In The Inland And Coastal Regions Of Northern Portugal Using Indicators: Establishing The Foundation Towards Better Agricultural Practices, Genevieve Gehlken

Independent Study Project (ISP) Collection

This study conducts a comprehensive evaluation of agricultural systems in the distinct coastal and inland regions of Northern Portugal. Employing key indicators, including soil erosion, nitrogen surplus, irrigation practices, Agricultural Gross Domestic Product (GDP), and crop yield, the analysis reveals statistically significant disparities and unique challenges in each region. The coastal areas, marked by higher agricultural GDP, exhibit distinct economic dependencies on agriculture, while the inland regions face challenges related to water scarcity, soil erosion, and rural isolation. The looming threat of climate change adds complexity to these dynamics, further highlighting the need for region-specific, sustainable agricultural practices. In the …

Optimizing Crop Productivity And Fertility Practices In Intermediate Wheatgrass, Roberta Bianchin Rebesquini

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The intensive management associated with many annual crops often includes recurring tillage, fertilization, and pesticide applications, which contribute to environmental concerns such as water pollution and soil erosion. Intermediate wheatgrass (Thinopyrum intermedium), recognized under the trade name Kernza®, is a perennial grass that can be managed to produce grain and biomass while providing desired environmental benefits such as soil conservation and nutrient cycling. There has been limited research on best management practices and crop productivity for this alternative dual-use crop in Nebraska. A field experiment was conducted beginning in 2021 to assess nitrogen (N), phosphorus (P), and potassium …

Genetic Architecture Of Soybean Tolerance To Off-Target Dicamba, Caio Canella Vieira, Jing Zhou, Diego Jarquin, Jiangfeng Zhou, Brian Diers, Dean E. Riechers, Henry T. Nguyen, Grover Shannon

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

The adoption of dicamba-tolerant (DT) soybean in the United States resulted in extensive off-target dicamba damage to non-DT vegetation across soybean-producing states. Although soybeans are highly sensitive to dicamba, the intensity of observed symptoms and yield losses are affected by the genetic background of genotypes. Thus, the objective of this study was to detect novel marker-trait associations and expand on previously identified genomic regions related to soybean response to off-target dicamba. A total of 551 non-DT advanced breeding lines derived from 232 unique bi-parental populations were phenotyped for off-target dicamba across nine environments for three years. Breeding lines were genotyped …

Qtls And Candidate Loci Associated With Drought Tolerance Traits Of Kaybonnet X Zhe733 Recombinant Inbred Lines Rice Population, Yheni Dwiningsih, Julie Thomas, Anuj Kumar, Chirag Gupta, Navdeep Gill, Charles Ruiz, Jawaher Alkahtani, Niranjan Baisakh, Andy Pereira

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Rice is the most important staple crop for the sustenance of the world’s population, and drought is a major factor limiting rice production. Quantitative trait locus (QTL) analysis of drought-resistance-related traits was conducted on a recombinant inbred line (RIL) population derived from the self-fed progeny of a cross between the drought-resistant tropical japonica U.S. adapted cultivar Kaybonnet and the drought-sensitive indica cultivar ZHE733. K/Z RIL population of 198 lines was screened in the field at Fayetteville (AR) for three consecutive years under controlled drought stress (DS) and well-watered (WW) treatment during the reproductive stage. The effects of DS were quantified …

Genome-Wide Association Study And Genomic Prediction Of Fusarium Wilt Resistance In Common Bean Core Collection, Kenani Chiwina, Haizheng Xiong, Gehendra Bhattarai, Ryan Dickson, Theresa Makawa Phiri, Yilin Chen, Ibtisam Alatawi, Derek Dean, Neelendra K. Joshi, Yuyan Chen, Awais Riaz, Paul Gepts, Mark Brick, Patrick Byrne, Howard Schwartz, James B. Ogg, Kristen Otto, Amy Fall, Jeremy Gilbert, Ainong Shi

Horticulture Faculty Publications and Presentations

The common bean (Phaseolus vulgaris L.) is a globally cultivated leguminous crop. Fusarium wilt (FW), caused by Fusarium oxysporum f. sp. phaseoli (Fop), is a significant disease leading to substantial yield loss in common beans. Disease-resistant cultivars are recommended to counteract this. The objective of this investigation was to identify single nucleotide polymorphism (SNP) markers associated with FW resistance and to pinpoint potential resistant common bean accessions within a core collection, utilizing a panel of 157 accessions through the Genome-wide association study (GWAS) approach with TASSEL 5 and GAPIT 3. Phenotypes for Fop race 1 and race …

Did Cover Crop Or Animal Manure Ameliorate Corn Residue Removal Effects On Soil Mechanical Properties After 10 Years?, Hans W. Klopp, Humberto Blanco-Canqui, Michael Sindelar, Virginia L. Jin, Marty R. Schmer, Richard B. Ferguson

Department of Agronomy and Horticulture: Faculty Publications

Crop residue removal may negatively affect soil mechanical properties, which are key components of soil quality. To evaluate potential long-term effects, we assessed the 10-yr impact of corn (Zea mays L.) residue removal (59 % of non-grain biomass annually) on surface soil mechanical properties (0–20 cm). We also evaluated whether adding carbon (C) amendments, such as using a winter rye (Secale cereale L.) cover crop or surface-applying cattle manure (24 Mg ha− 1 biannually) can ameliorate the effects of crop residue removal. This long-term study was under irrigated no-till continuous corn on a silt loam soil in south-central …

Is Climate Change Causing The Range Contraction Of Cape Rock-Jumpers (Chaetops Frenatus)?, Gregory D. Duckworth, Raquel A. Garcia, Rheinhardt Scholtz, Res Altwegg

Department of Agronomy and Horticulture: Faculty Publications

Species distribution models often suggest strong links between climate and species' distribution boundaries and project large distribution shifts in response to climate change. However, attributing distribution shifts to climate change requires more than correlative models. One idea is to examine correlates of the processes that cause distribution shifts, namely colonization and local extinction, by using dynamic occupancy models. The Cape Rock-jumper (Chaetops frenatus) has disappeared over most of its distribution where temperatures are the highest. We used dynamic occupancy models to analyse Cape Rock-jumper distribution with respect to climate (mean temperature and precipitation over the warmest annual quarter), …

Herbicide And Additive Impacts On Bradyrhizobium Japonicum Growth In Solution, Joy Amajioyi, Thandiwe Nleya, Senthil Subramanian, Sharon A. Clay

Agronomy, Horticulture and Plant Science Faculty Publications

Plant biostimulants include beneficial fungi and bacteria, and are often applied to foliage to improve crop growth, yield, and/or crop quality. Crop improvements due to biostimulant addition may be modest; therefore, solo applications may not be economical or climate smart. However, biostimulants combined with other postemergence treatments, such as herbicides, may provide an alternative application method, if mixtures do not harm the living organism(s). The growth of Bradyrhizobium japonicum, as a biostimulant surrogate, was assessed in solutions of glyphosate [N-(phosphonomethyl)glycine] and dicamba (3,6-dichloro-2-methoxybenzoic acid), with and without common spray additives (ammonium sulfate [AMS] and nonionic surfactant) in laboratory studies over …

Disease-Reducing Effect Of Calcium Salts Against Postharvest Diseases Of Mango (Mangifera Indica L. Cv. Carabao) Fruits, Melissa P. Montecalvo, Mary Joy C. Mendoza, Teresita U. Dalisay

The Philippine Agricultural Scientist

Mango fruits (Mangifera indica L. cv. Carabao) are susceptible to fungal infection, resulting in postharvest diseases. Chemical pesticides are used for disease management but may have a health impact and are costly. Therefore, alternatives to chemical control are necessary to minimize health risks and losses due to postharvest diseases. This research presented the disease-reducing effect of calcium salts, calcium chloride (CaCl₂) and calcium carbonate (CaCO₃), against mango stem end rot (SER) (sometimes caused by Lasiodiplodia theobromae) and anthracnose (caused by Colletotrichum gloeosporioides sensu lato). In in vitro assays, mycelial growth of both pathogens …

Effects Of Polishing And Cooking On The Phytochemical Properties And Antioxidant Activities Of Selected Philippine Rice Cultivars [Research Note], Rodel M. Bulatao, Charleo S. Zapanta, Maricar B. Castillo, Reniel P. Tubera, Joel R. Salazar

The Philippine Agricultural Scientist

This paper evaluated the effects of different polishing times and regular cooking on the phytochemical properties and antioxidant activities of black rice Brillante, red rice Minaangan, and white rice NSIC Rc 160. Rice samples were polished for 0, 15, 30, and 45 s, and were cooked using their optimum cooking water ratio. The samples were then characterized for their phytochemical properties [total anthocyanin content (TAC), total phenolic content (TPC), and total flavonoid content (TFC)] and antioxidant activities [DPPH-radical scavenging activity (DPPH-RSA) and ferric reducing antioxidant power (FRAP)]. Pearson’s correlation analysis (PCA) was employed to determine the strength of …

Allelopathy Of Faba Bean Cover Crop To Durum Wheat Under A Semi-Arid Environment, Oussama Oueslati, Arwa Zammali, Raed Hamdi, Ahlem Dhahri, Chaima Melliti, Moncef Ben Hammouda, Robert Kremer

The Philippine Agricultural Scientist

Problems facing farmers practicing conservation agriculture in the semi-arid zone of Tunisia include appropriate cover crop selection, management of allelopathic effects affecting subsequent crop performance, and influence of seasonal variation on allelopathy expression. Allelopathy expressed by faba bean (Vicia faba L.) toward durum wheat [Triticum turgidum ssp. durum (Desf.) Husn.] was studied using bioassays during three growing seasons. The role of phenols in the expression of such potential was also investigated. Analyses of plant samples at three phenological stages (flowering, fruiting, senescence) revealed that leaves were most inhibitory. Allelopathic potential differed among plant components and phenological stages, with …

Effects Of Measurement Methods And Growing Conditions On Phenotypic Expression Of Photosynthesis In Seven Diverse Rice Genotypes, Megan Reavis, Larry C. Purcell, Andy Pereira, Kusum Naithani

Biological Sciences Faculty Publications and Presentations

Introduction: Light response curves are widely used to quantify phenotypic expression of photosynthesis by measuring a single sample and sequentially altering light intensity within a chamber (sequential method) or by measuring different samples that are each acclimated to a different light level (non-sequential method). Both methods are often conducted in controlled environments to achieve steady-state results, and neither method involves equilibrating the entire plant to the specific light level.

Methods: Here, we compare sequential and non-sequential methods in controlled (greenhouse), semi-controlled (plant grown in growth chamber and acclimated to field conditions 2-3 days before measurements), and field environments. We selected …

Long-Term Impacts Of Conservation Pasture Management In Manuresheds On System-Level Microbiome And Antibiotic Resistance Genes, Mitiku Mihiret Seyoum, Amanda Ashworth, Kristina M. Feye, Steven C. Ricke, Phillip R. Owens, Philip A. Moore Jr., Mary Savin

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Animal manure improves soil fertility and organic carbon, but long-term deposition may contribute to antibiotic resistance genes (ARGs) entering the soil-water environment. Additionally, long-term impacts of applying animal manure to soil on the soil-water microbiome, a crucial factor in soil health and fertility, are not well understood. The aim of this study is to assess: (1) impacts of long-term conservation practices on the distribution of ARGs and microbial dynamics in soil, and runoff; and (2) associations between bacterial taxa, heavy metals, soil health indicators, and ARGs in manures, soils, and surface runoff in a study following 15 years of continuous …

Maize Leaf Angle Genetic Gain Is Slowing Down In The Last Decades, Elvis F. Elli, Jode Edwards, Jianming Yu, Slobodan Trifunovic, Douglas M. Eudy, Kevin R. Kosola, Patrick S. Schnable, Kendall R. Lamkey, Sotirios V. Archontoulis

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Quantifying historical changes in maize leaf angle and factors affecting it can enhance our understanding of canopy architecture and light capture, and hence crop productivity. Our objectives were to (1) quantify leaf angle genetic gain per canopy position in Bayer's legacy maize (Zea mays L.) hybrids; (2) dissect the contribution of breeding from plant density on historical changes in leaf angle; and (3) synthesize our findings with literature to determine leaf angle changes over a century of breeding. We measured leaf angle in 78 maize hybrids released between 1980 and 2020 across eight environments in the US Corn Belt. …

Dicamba Off-Target Movement From Applications On Soybeans At Two Growth Stages, Greg R. Kruger, Guilherme S. Alves, Kasey Schroeder, Jeffrey A. Golus, Daniel B. Reynolds, Darrin M. Dodds, Ashli E. Brown, Bradley K. Fritz, Wesley C. Hoffmann

Department of Agronomy and Horticulture: Faculty Publications

The objective of this study was to evaluate dicamba off-target movement during and after applications over soybean at two growth stages. Dicamba-tolerant soybean [Glycine max (L.) Merr.] at V3 and R1 growth stages in Nebraska and Mississippi fields were treated with diglycolamine salt of dicamba (560 g ae ha⁻¹), potassium salt of glyphosate (1260 g ae ha⁻¹), and a drift-reducing adjuvant (0.5% v v⁻¹). Filter papers positioned outside the sprayed area were used to determine primary movement and air samplers positioned at the center of sprayed area were used to calculate dicamba flux …

Effects Of Cover Crop, N And Residue Management On The Financial Sustainability Of Processing Tomatoes In Southwestern Ontario, Jamison Kerr, Aaron De Laporte, Alfons Weersink, Rich J. Vyn, Laura L. Van Eerd

Faculty Work Comprehensive List

Given the potential environmental and economic sustainability consequences of cover crop adoption, N fertilizer application, and residue management, this study focuses on the yield and financial effects of these on processing tomato production in Ontario, Canada. The study employs financial modeling using field data from a long-term cover crop experiment (oat, cereal rye, radish, and a radish-rye mixture) from 2010 to 2020. Averaged over six experimental years, compared to no cover (87 Mg ha−1) radish (99.6 Mg ha−1) and radish-rye mix (95.2 Mg ha−1) cover crops produce statistically significantly higher tomato yields as isolated practices, increasing farm net returns by …

A Follow-Up Survey To Assess Stakeholders’ Perspectives On Weed Management Challenges And Current Practices In Nebraska, Usa, Shawn T. Mcdonald, Debalin Sarangi, Jennifer M. Rees, Amit J. Jhala

Department of Agronomy and Horticulture: Faculty Publications

Stakeholders across the state of Nebraska, USA, were surveyed in 2019–2020 to assess problem weeds and weed management practices in agronomic crops. A total of 420 complete responses were obtained across four Nebraska districts (Northeast, Panhandle, Southeast, and West Central). Accumulated across the state, 65.5% of farmed or scouted crop ground in Nebraska was under no-till production, with the major crops being corn and soybean representing 39.3% and 30.7% of agronomic crop production area, respectively. Palmer amaranth, horseweed, waterhemp, kochia, and giant ragweed were ranked the most problematic weeds. In a 2014–2015 survey, Palmer amaranth was the sixth most problematic …

Evaluation Of Organic And Synthetic Herbicides Applications On Indicators Of Soil Health And Weed Suppression In A Conventional Cropping System In Louisiana, Caitlin Denux

LSU Doctoral Dissertations

Synthetic herbicides, with their varying modes of action, are well known for their efficiency in the suppression and control of weed species in U.S. agriculture. However, the consequences of using synthetic herbicides without attention to the surrounding environment can produce chemical run-off, changes in soil health and soil health conditions, and create herbicide-resistant weeds. These consequences have encouraged growers to find alternatives in their weed management programs. In this study, organic and synthetic herbicides were assessed on how well they performed in weed suppression surveys, and their potential effects on soil health indicators. Commonly used indicators include soil pH, β-glucosidase …

The Evolving Definition Of Plant Cell Type, Sahand Amini, Jeffrey J. Doyle, Marc Libault

Department of Agronomy and Horticulture: Faculty Publications

In 1665 Robert Hooke, looking at cork through his microscope, discovered that plants are composed of elementary structures he named “cells”. Variation in the expression of a single genome in a complex eukaryotic organism guides the initiation, maturation, physiology, and biochemistry of cells with different shapes and sizes, playing different structural and functional roles in space and time. How many kinds of cells—”cell types”— an organism possesses of course depends on the organism’s cellular complexity, but the plasticity within a cell type fuels the emergence of the concept of cell state (Figure 1). The transition between cell states is driven …

Shortening Harvest Interval, Reaping Benefits? A Study On Harvest Practices In Oil Palm Smallholder Farming Systems In Indonesia, Rosanne E. De Vos, Lisa Nurfalah, Fatima A. Tenorio, Ya Li Lim, Juan Pablo Monzon, Christopher R. Donough, Hendra Sugianto, Asri A. Dwiyahreni, Nurul L. Winarni, Nadia Mulani, Gilang Ramadhan, Muhammad Ali Imran, Antonius P. Tito, Pandu Sulistiawan, Muhammad Khoirul, Rana Farrasati, Iput Pradiko, Patricio Grassini, Maja Slingerland

Department of Agronomy and Horticulture: Faculty Publications

CONTEXT: Smallholders are responsible for a large share of global palm oil production. Yet, in Indonesia, the main palm oil producing country, smallholders’ yields remain low. Better management practices, including short harvest interval (HI, the number of days between two harvest rounds), could help to raise smallholder yields. However, at present, HI is long in smallholder fields and the drivers underlying this phenomenon are poorly understood.

OBJECTIVE: We explored agronomic, socio-economic, and institutional factors that underlie harvesting practices in independent oil palm smallholder farming systems in Indonesia to assess scope for sustainable intensification through shorter HI and reduced …

Exotic Herbivores And Fire Energy Drive Standing Herbaceous Biomass But Do Not Alter Compositional Patterns In A Semiarid Savanna Ecosystem, Virginia D. Preiss, Carissa L. Wonkka, Devan A. Mcgranahan, Alexandra G. Lodge, Matthew B. Dickinson, Kathleen L. Kavanagh, Heath D. Starns, Douglas R. Tolleson, Morgan L. Treadwell, Dirac L. Twidwell Jr, William E. Rogers

Department of Agronomy and Horticulture: Faculty Publications

Questions: Fire regime alterations are pushing open ecosystems worldwide past tipping points where alternative steady states characterized by woody dominance prevail. This reduces the frequency and intensity of surface fires, further limiting their effectiveness for controlling cover of woody plants. In addition, grazing pressure (exotic or native grazers) can reinforce woody encroachment by potentially reducing fine-fuel loads. We investigated the effects of different fire energies on the herbaceous plant community, together with mammalian wildlife herbivory (exotic and native combined) exclusion, to inform best management practices.

Location: Texas semi-arid savanna, southern Great Plains, USA.

Methods: We conducted an …

Exome-Based New Allele-Specific Pcr Markers And Transferability For Sodicity Tolerance In Bread Wheat (Triticum Aestivum L.), Roopali Bhoite, Rosemary Smith, Urmil Bansal, Mirza Dowla, Harbans Bariana, Darshan L. Sharma

Grain and Other Field Crops Research Articles

Targeted exome-based genotype by sequencing (t-GBS), a sequencing technology that tags SNPs and haplotypes in gene-rich regions was used in previous genome-wide association studies (GWAS) for sodicity tolerance in bread wheat. Thirty-nine novel SNPs including 18 haplotypes for yield and yield-components were identified. The present study aimed at developing SNP-derived markers by precisely locating new SNPs on ~180 bp allelic sequence of t-GBS, marker validation, and SNP functional characterization based on its exonic location. We identified unknown locations of significant SNPs/haplotypes by aligning allelic sequences on to IWGSC RefSeqv1.0 on respective chromosomes. Eighteen out of the target 39 SNP locations …

Comparison Between The Electrical Conductivity Method And Radicle Emergence Test As A Rapid Test Of Sorghum Seed Vigor, Nugraheni, Bambang Pujiasmanto, Samanhudi, Amalia Tetrani Sakya

Jurnal Kultivasi

Sorghum (Sorghum bicolor L. Moench) belongs to multipurpose crops. All parts of sorghum can be used both as main products and derivative products; some derivative products produced from the sorghum plant consist of sugar, bioethanol, biomass, handicraft raw materials and starch. This study aims to determine the time required for testing the vigor and viability of sorghum seeds using the electrical conductivity and radicle emergence methods. The study was conducted in two experimental stages using a completely randomized design. The first experiment consisted of two factors: the number of sorghum seeds (40, 70 and 100 grains) and the volume of …

A Review Of Low-Frequency Latex Harvesting Systems That Lessen The Tapper Shortage Problem Of The Smallholders' Natural Rubber Production, Zar Ni Zaw

Jurnal Kultivasi

Smallholders' rubber production is encountering problems of skilled tapper shortage and high production costs resulting from increased worker wages and the substantial growth of new mature areas. Low-frequency latex harvesting system (LFLHS) effectively improves tapper productivity with long-term optimum yield by reducing the tapper requirement. LFLHS reduces tapper requirement by 33% to 67% of the conventional harvesting systems. Under the d3 (tapping every three days) frequency harvesting system, a tapper is assigned to cover three tasks, and his productivity is at least 30% higher than that of the d2 (alternative daily) frequency harvesting system. The cumulative yield of LFLHS is …