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Agronomy and Crop Sciences

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Articles 1981 - 2010 of 4161

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Food Supply Chains In Developed Countries And Livestock Production Systems, Alan Mcdermott Jul 2021

Food Supply Chains In Developed Countries And Livestock Production Systems, Alan Mcdermott

IGC Proceedings (1977-2023)

No abstract provided.


The Fatty Acid Profile Of Traditional Home‐Made Kurut In Xinjiang Pastoral Regions, Yimamu Aibibula, Masaaki Hanada, M. Hirata, M. Renaguli, M. Goto Jul 2021

The Fatty Acid Profile Of Traditional Home‐Made Kurut In Xinjiang Pastoral Regions, Yimamu Aibibula, Masaaki Hanada, M. Hirata, M. Renaguli, M. Goto

IGC Proceedings (1977-2023)

No abstract provided.


Biorenewable Energy: New Opportunities For Grassland Agriculture, Kenneth J. Moore, Steven L. Fales, Emily A. Heaton Jul 2021

Biorenewable Energy: New Opportunities For Grassland Agriculture, Kenneth J. Moore, Steven L. Fales, Emily A. Heaton

IGC Proceedings (1977-2023)

No abstract provided.


Effects Of Plant Spacing Variability And Non-Uniform Emergence On Corn Yield, Justin Dufour Jul 2021

Effects Of Plant Spacing Variability And Non-Uniform Emergence On Corn Yield, Justin Dufour

LSU Master's Theses

Plant spacing variability and non-uniform emergence in corn (Zea mays L.) is not uncommon in Louisiana corn fields. Variation in planting depth, non-uniform surface crop residue distribution in no-tillage systems, microsite variation in the seed bed condition, and seed vigor are major factors responsible for non-uniform emergence. Also, planters with low precision in seed placement and careless planting operations can cause non-uniform spacing. Two studies were conducted to quantify the effects of plant spacing variability and non-uniform emergence on grain yield in corn. Six plant spacing treatments at 47,770 plants ha-1 were evaluated. Uniform spacing, seed skip, double …


Evaluation Of Cool-Season Annuals Effect On Soil Health In Warm-Season Perennial Pastures In Southestern Us., Paola C. Muela Negrete Jul 2021

Evaluation Of Cool-Season Annuals Effect On Soil Health In Warm-Season Perennial Pastures In Southestern Us., Paola C. Muela Negrete

LSU Master's Theses

Perennial grass crops represent approximately 8 million hectares of the land area of the humid lower southeastern United States. These forage crops receive high rates of fertilizer, especially nitrogen (N), and near monoculture remains have often been treated with repeated applications of herbicides. Pasture management is crucial to improve soil properties in pasturelands. Common pasture management practices include introducing cool-season multispecies in warm-season pasture systems and forage harvest frequency of pasture systems. It is known that cool-season multispecies in warm-season pasture systems ensure cattle feeding during winter season and have beneficial effects on soil microbial biomass, soil organic matter (SOM), …


Modeling Forage Yield Losses For Crop Insurance In Eastern Canada, I. Duchesne‐Ortiz, Gilles Bélanger, L. Martel, Guy Allard Jul 2021

Modeling Forage Yield Losses For Crop Insurance In Eastern Canada, I. Duchesne‐Ortiz, Gilles Bélanger, L. Martel, Guy Allard

IGC Proceedings (1977-2023)

No abstract provided.


The Effects Of Tunnel Technology On Crop Productivity And Livelihood Of Smallholder Farmers In Nepal, Diwakar Kc, Dinesh Jamarkattel, Tek Maraseni, Dilip Nandwani, Pratibha Karki Jul 2021

The Effects Of Tunnel Technology On Crop Productivity And Livelihood Of Smallholder Farmers In Nepal, Diwakar Kc, Dinesh Jamarkattel, Tek Maraseni, Dilip Nandwani, Pratibha Karki

Agricultural and Environmental Sciences Faculty Research

Technologies-based production practices are critical for agricultural growth and sustainable development in low-income countries like Nepal. In the last few years, tunnel house has been increasingly promoted as tools to enhance smallholder farmers’ livelihood and tackle climate adversaries. However, little is known about what factor determines its adoption and whether it helps smallholders adapt to climate change and experience better livelihood. We address these gaps using the cross-sectional survey data collected from 62 adopters and 92 non-adopters in three municipalities of Bagmati Province. We employed descriptive analysis and probit model and found out that age, farm size, and ethnicity strongly …


Taming A 'Wicked' Policy Problem: A Policy Overview Of Property Rights And Governance Of Africa's Rangelands, Esther Mwangi Jul 2021

Taming A 'Wicked' Policy Problem: A Policy Overview Of Property Rights And Governance Of Africa's Rangelands, Esther Mwangi

IGC Proceedings (1977-2023)

No abstract provided.


Himalayan Rangelands Ecology And Animal Production Influenced By Changing Social And Economic Culture In Northern Areas Of Pakistan, Syed Hassan Raza Jul 2021

Himalayan Rangelands Ecology And Animal Production Influenced By Changing Social And Economic Culture In Northern Areas Of Pakistan, Syed Hassan Raza

IGC Proceedings (1977-2023)

No abstract provided.


A Forage Book Of International Impact, Garry D. Lacefield, Donald M. Ball, Carl S. Hoveland, Donald L. Armstrong Jul 2021

A Forage Book Of International Impact, Garry D. Lacefield, Donald M. Ball, Carl S. Hoveland, Donald L. Armstrong

IGC Proceedings (1977-2023)

No abstract provided.


Effects Of Treatments On Fermentation Quality And Nutrition Ingredient Of Small Reed, Yusup Yusanjan, Ainiwaer Aishan, Guangwei Zhao Jul 2021

Effects Of Treatments On Fermentation Quality And Nutrition Ingredient Of Small Reed, Yusup Yusanjan, Ainiwaer Aishan, Guangwei Zhao

IGC Proceedings (1977-2023)

No abstract provided.


Nocturnal Pollination In Fruit Agriculture, Stephen Robertson Jul 2021

Nocturnal Pollination In Fruit Agriculture, Stephen Robertson

Graduate Theses and Dissertations

Insect pollination in agriculture provides as much as 35% of the global food supply and contributes hundreds of billions of dollars to the global economy each year. In the past 30 years, reports of declining populations of managed and wild bees, notably the western honey bee (Apis mellifera) and a wide array of bumble bees (Bombus spp.), have raised concerns about the stability and outlook of agriculture. At the same time, agricultural dependence on insect pollinators is increasing as greater percentages of land being converted to pollinator-dependent crops, such as soy and oil palm, than pollinator-independent crops, such as grains …


Economically Optimal Nitrogen Side-Dressing Based On Vegetation Indices From Satellite Images Through On-Farm Experiments, Qianqian Du Jul 2021

Economically Optimal Nitrogen Side-Dressing Based On Vegetation Indices From Satellite Images Through On-Farm Experiments, Qianqian Du

Department of Agricultural Economics: Dissertations, Theses, and Student Research

Optimal N fertilizer rates for corn (Zea mays L.) vary substantially within and among fields, and by corn growth stages. Improving N side-dressing management can improve fertilizer use efficiency, farmers’ profitability, and the sustainability of crop production. The objective of this study is to introduce a framework along with a methodology that can find the site-specific economically optimal N rates (EONRs) within one field for a particular growing season. An on-farm experiment was conducted in the 2019 corn growing season. A base N rate was applied uniformly on the field. NDRE images from the Sentinel-2 satellite were observed during …


Comparative Transcriptome Analysis Reveals Genetic Mechanisms Of Sugarcane Aphid Resistance In Grain Sorghum, Desalegn D. Serba, Xiaoxi Meng, James Schnable, Elfadil Bashir, J P. Michaud, P V. Vara Prasad, Ramasamy Perumal Jul 2021

Comparative Transcriptome Analysis Reveals Genetic Mechanisms Of Sugarcane Aphid Resistance In Grain Sorghum, Desalegn D. Serba, Xiaoxi Meng, James Schnable, Elfadil Bashir, J P. Michaud, P V. Vara Prasad, Ramasamy Perumal

Department of Agronomy and Horticulture: Faculty Publications

The sugarcane aphid, Melanaphis sacchari (Zehntner) (Hemiptera: Aphididae) (SCA), has become a major pest of grain sorghum since its appearance in the USA. Several grain sorghum parental lines are moderately resistant to the SCA. However, the molecular and genetic mechanisms underlying this resistance are poorly understood, which has constrained breeding for improved resistance. RNA-Seq was used to conduct transcriptomics analysis on a moderately resistant genotype (TAM428) and a susceptible genotype (Tx2737) to elucidate the molecular mechanisms underlying resistance. Differential expression analysis revealed differences in transcriptomic profile between the two genotypes at multiple time points after infestation by SCA. Six gene …


Fostering A Climate-Smart Intensification For Oil Palm, Juan Pablo Monzon, Maja A. Slingerland, Suroso Rahutomo, Fahmuddin Agus, Thomas Oberthür, José F. Andrade, Antoine Couëdel, Juan I. Rattalino Edreira, Willem Hekman, Rob Van Den Beuken, Fandi Hidayat, Iput Pradiko, Dwi K.G. Purwantomo, Christopher R. Donough, Hendra Sugianto, Ya Li Lim, Thomas Farrell, Patricio Grassini Jul 2021

Fostering A Climate-Smart Intensification For Oil Palm, Juan Pablo Monzon, Maja A. Slingerland, Suroso Rahutomo, Fahmuddin Agus, Thomas Oberthür, José F. Andrade, Antoine Couëdel, Juan I. Rattalino Edreira, Willem Hekman, Rob Van Den Beuken, Fandi Hidayat, Iput Pradiko, Dwi K.G. Purwantomo, Christopher R. Donough, Hendra Sugianto, Ya Li Lim, Thomas Farrell, Patricio Grassini

Department of Agronomy and Horticulture: Faculty Publications

Oil palm production in Indonesia illustrates the intense pressure that exists worldwide to convert natural ecosystems to agricultural production. Oil palm production has increased because of expansion of cultivated area rather than due to average-yield increases. We used a data-rich modelling approach to investigate how intensification on existing plantations could help Indonesia meet palm oil demand while preserving fragile ecosystems. We found that average current yield represents 62% and 53% of the attainable yield in large and smallholder plantations, respectively. Narrowing yield gaps via improved agronomic management, together with a limited expansion that excludes fragile ecosystems, would save 2.6 million …


Developing A Lab-Scale Fluidized Bed Dryer System To Enhance Rough Rice Drying Process, Kaushik Luthra Jul 2021

Developing A Lab-Scale Fluidized Bed Dryer System To Enhance Rough Rice Drying Process, Kaushik Luthra

Graduate Theses and Dissertations

For more than half of the world's population, rice (Oryza sativa L.) is a staple meal. However, rice growers encounter difficulties supplying this demand, particularly in developing nations, where rice is susceptible to spoilage if the moisture content is not lowered to a safe level soon after harvest. As a result, traditional drying methods, such as sun drying and natural air drying, are commonly used by rice growers, particularly in underdeveloped nations. However, these procedures are time-consuming and can lead to rice spoilage. On the other hand, fluidized bed drying is a well-established technology that might give rice growers a …


Assessing Impacts Of Winter-Hay Feeding On Soil And Forage Nutrient Dynamics In A Rotationally-Grazed Pasture System In Arkansas, Lawrence Gordon Berry Iv Jul 2021

Assessing Impacts Of Winter-Hay Feeding On Soil And Forage Nutrient Dynamics In A Rotationally-Grazed Pasture System In Arkansas, Lawrence Gordon Berry Iv

Graduate Theses and Dissertations

More than 38 % of United States’ rural land area was used for grazing (i.e., pastureland or rangeland) ruminant animals in 2017, constituting the largest private land use group. The expansive nature of these lands means that grazing and pasture management decisions have potential to impact water quality as well as profit margins. As a result, beef producers are under increased pressure from economic and environmental standpoints to limit application of nutrients beyond those required to grow the forage needed for animal consumption. At the same time, a large amount of nutrients is recycled back to pasture systems directly from …


Study On Drying Characteristic And Hay Quality Of Alfalfa In Different Hay Making Methods, Shiming Xue, Guilian Shan Jun 2021

Study On Drying Characteristic And Hay Quality Of Alfalfa In Different Hay Making Methods, Shiming Xue, Guilian Shan

IGC Proceedings (1977-2023)

No abstract provided.


Chemical Composition And Seasonal Yield Of Koeleria Cristata In West Azarbaijan Grasslands Of Iran, Javad Torkan, I. Bernosi Jun 2021

Chemical Composition And Seasonal Yield Of Koeleria Cristata In West Azarbaijan Grasslands Of Iran, Javad Torkan, I. Bernosi

IGC Proceedings (1977-2023)

No abstract provided.


Effects Of Zeolite On Agronomic And Biochemical Traits And Yield Components Of Zea Mays L. Cv Simone Under Drought Stress Condition, Mehri Salehi, Mahdi Zare, Forood Bazrafshan, Ahmad Aien, Bahram Amiri Jun 2021

Effects Of Zeolite On Agronomic And Biochemical Traits And Yield Components Of Zea Mays L. Cv Simone Under Drought Stress Condition, Mehri Salehi, Mahdi Zare, Forood Bazrafshan, Ahmad Aien, Bahram Amiri

The Philippine Agricultural Scientist

One of the new strategies to increase the effectiveness of chemical fertilizers, prevent the waste of chemical fertilizers, and increase the yield of agricultural products, is the use of natural compound such as zeolite. This study was conducted to investigate the effects of zeolite (0, 5, 10, and 15 t ha-1) on agronomic and biochemical responses as well as yield components of maize (cv. Simon) under normal (90% field capacity), moderate (75% FC), and severe (60% FC) drought stress conditions during 2017-2019. The results showed that moderate and severe drought stress significantly decreased plant height (10.9% and 19.7%, …


Grain Yield Variations In Rice Genotypes Under Different Growing Environments In The Philippines, Kim Nyka C. Perdiguerra, Shiro Mitsuya, Akira Yamauchi, Felino P. Lansigan, Maria Victoria O. Espaldon, Jose E. Hernandez, Pompe C. Sta. Cruz Jun 2021

Grain Yield Variations In Rice Genotypes Under Different Growing Environments In The Philippines, Kim Nyka C. Perdiguerra, Shiro Mitsuya, Akira Yamauchi, Felino P. Lansigan, Maria Victoria O. Espaldon, Jose E. Hernandez, Pompe C. Sta. Cruz

The Philippine Agricultural Scientist

Grain yield variations in PSB Rc18, NSIC Rc222 (inbreds) and NSIC Rc202H (hybrid) were determined across growing environments as a function of cropping seasons and locations in rice producing areas in the Philippines. Contribution of location to variation in grain yield is 61.0%, while 12.7% for the season, and 6.1% for the genotype and this must be due location by season by genotype interactions. Dry season cropping in Nueva Ecija produced the highest mean grain yield. On the other hand, wet season cropping in Davao del Sur produced the least mean grain yield. The genotypes differed in their response to …


Foliar Applied Boron Not Only Enhances Seed Cotton Yield But Also Improves Fiber Strength And Fineness Of Cotton Cultivars, Muhammad Ashfaq Wahid, Muhammad Saleem, Shahbaz Khan, Sohail Irshad, Mumtaz Akhtar Cheema, Muhammad Farrukh Saleem, Haroon Zaman Khan, Madad Ali, Ali Bakhsh, Zuhair Hasnain, Sara T. Alrashood, Sulaiman Ali Alharbi Jun 2021

Foliar Applied Boron Not Only Enhances Seed Cotton Yield But Also Improves Fiber Strength And Fineness Of Cotton Cultivars, Muhammad Ashfaq Wahid, Muhammad Saleem, Shahbaz Khan, Sohail Irshad, Mumtaz Akhtar Cheema, Muhammad Farrukh Saleem, Haroon Zaman Khan, Madad Ali, Ali Bakhsh, Zuhair Hasnain, Sara T. Alrashood, Sulaiman Ali Alharbi

The Philippine Agricultural Scientist

Cotton (Gossypium hirsutum L.) is as famous as “White Gold” due to its high quality fiber. Boron (B) is one of essential micronutrients involved directly or indirectly in many plant processes. Cotton growth, yield and quality are intensely influenced with B application. A 2 years field based study was conducted to explore the impact of foliar applied B (0.0, 0.5, 1.0, 1.5, 2.0, and 2.5 kg ha-1) on productivity and quality of cotton cultivars (FH-113, MNH-786, and CIM-496). Outcomes of the experiment reflected that application of various levels of B significantly influences the growth and quality attributes …


Biocomposites Of Low-Density Polyethylene Plus Wood Flour Or Flax Straw: Biodegradation Kinetics Across Three Environments, Anna K. Zykova, Petr V. Pantyukhov, Elena E. Mastalygina, Christian Chaverri-Ramos, Svetlana G. Nikolaeva, Jose J. Saavedra-Arias, Anatoly A. Popov, Sam E. Wortman, Matheus Poletto Jun 2021

Biocomposites Of Low-Density Polyethylene Plus Wood Flour Or Flax Straw: Biodegradation Kinetics Across Three Environments, Anna K. Zykova, Petr V. Pantyukhov, Elena E. Mastalygina, Christian Chaverri-Ramos, Svetlana G. Nikolaeva, Jose J. Saavedra-Arias, Anatoly A. Popov, Sam E. Wortman, Matheus Poletto

Department of Agronomy and Horticulture: Faculty Publications

The purpose of this study was to assess the potential for biocomposite films to biodegrade in diverse climatic environments. Biocomposite films based on polyethylene and 30 wt.% of two lignocellulosic fillers (wood flour or flax straw) of different size fractions were prepared and studied. The developed composite films were characterized by satisfactory mechanical properties that allows the use of these materials for various applications. The biodegradability was evaluated in soil across three environments: laboratory conditions, an open field in Russia, and an open field in Costa Rica. All the samples lost weight and tensile strength during biodegradation tests, which was …


The Effect Of Adding Biological Agents On Alfalfa Silage Quality, Changhui Li, Yanfang Deng, Yimin Cai Jun 2021

The Effect Of Adding Biological Agents On Alfalfa Silage Quality, Changhui Li, Yanfang Deng, Yimin Cai

IGC Proceedings (1977-2023)

No abstract provided.


Yield Trait Comparison Of Twenty Two Alfalfa Cultivars, Tianming Hu, Peizhi Yang, Quanzhen Wang Jun 2021

Yield Trait Comparison Of Twenty Two Alfalfa Cultivars, Tianming Hu, Peizhi Yang, Quanzhen Wang

IGC Proceedings (1977-2023)

No abstract provided.


Effects Of Different Drying Ways On Main Nutrition Ingredient In Different Growth Stages Of Xinjiang Small Reed, Guangwei Zhao, Ainiwaer Aishan, Yong Chen, Yusanjang, K. Ataku Jun 2021

Effects Of Different Drying Ways On Main Nutrition Ingredient In Different Growth Stages Of Xinjiang Small Reed, Guangwei Zhao, Ainiwaer Aishan, Yong Chen, Yusanjang, K. Ataku

IGC Proceedings (1977-2023)

No abstract provided.


Comparative Study On Forage Qualities Evaluated With Grading Index And Relative Feed Value, J. K. Zhang, K. W. Chen, J. F. Xie, D. X. Lu, M. Hu Jun 2021

Comparative Study On Forage Qualities Evaluated With Grading Index And Relative Feed Value, J. K. Zhang, K. W. Chen, J. F. Xie, D. X. Lu, M. Hu

IGC Proceedings (1977-2023)

No abstract provided.


Inheriting And Advancing The Essence Of Nomadic Culture, And Searching For A New Course Of Harmonious Development On The Grassland, Zhongling Liu, Cunzhu Liang, Lixing Wang, Dunyuan Hao, Huaming Liu Jun 2021

Inheriting And Advancing The Essence Of Nomadic Culture, And Searching For A New Course Of Harmonious Development On The Grassland, Zhongling Liu, Cunzhu Liang, Lixing Wang, Dunyuan Hao, Huaming Liu

IGC Proceedings (1977-2023)

No abstract provided.


The Studies Of Grasslands Puna And Sweetheart Chicory (Cichorium Intybus L.) Silages, Q. F. Xu, Z. W. Cui, X. Zhang, H. Liu, J. G. Han, Z. Yu, Z. Q. Li Jun 2021

The Studies Of Grasslands Puna And Sweetheart Chicory (Cichorium Intybus L.) Silages, Q. F. Xu, Z. W. Cui, X. Zhang, H. Liu, J. G. Han, Z. Yu, Z. Q. Li

IGC Proceedings (1977-2023)

No abstract provided.


Influences Of A Lactic Acid Bacterial Inoculum On Nutritive Value Of Corn Silage And The Nutrient Intake Of Sheep Fed This Silage, P. Wang, K. Souma, T. Saitou, S. Iwata, T. Tanaka, Masaaki Hanada, T. Masuko Jun 2021

Influences Of A Lactic Acid Bacterial Inoculum On Nutritive Value Of Corn Silage And The Nutrient Intake Of Sheep Fed This Silage, P. Wang, K. Souma, T. Saitou, S. Iwata, T. Tanaka, Masaaki Hanada, T. Masuko

IGC Proceedings (1977-2023)

No abstract provided.