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- Department of Agronomy and Horticulture: Faculty Publications (3)
- Department of Agricultural Economics: Dissertations, Theses, and Student Research (1)
- Department of Entomology: Faculty Publications (1)
- United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications (1)
Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
Measuring Bee Effects On Seed Traits Of Hybrid Sunflower, Gary J. Brewer, Kentaro Miwa, Kathy Hanford
Measuring Bee Effects On Seed Traits Of Hybrid Sunflower, Gary J. Brewer, Kentaro Miwa, Kathy Hanford
Department of Entomology: Faculty Publications
In hybrid sunflower, bee pollination can improve productivity, but the contribution of bees to productivity may be over or underestimated. To estimate bee effects (seed trait gains from exposure to bees during anthesis), single capitula are commonly covered with a porous material to exclude bees. However, depending on the exclosure porosity, estimates of the magnitude of bee effects will vary. In two studies, porosity size and bee effect gains in two sunflower types were tested. In the exclosure study, Delnet exclosures severely reduced seed set and exclosures with larger porosities and had smaller and similar effects. However, since a few …
First Things First: Widespread Nutrient Deficiencies Limit Yields In Smallholder Oil Palm Fields, Hendra Sugianto, Juan Pablo Monzon, Iput Pradiko, Fatima A. Tenorio, Ya Li Lim, Christopher R. Donough, Sunawan, Suroso Rahutomo, Fahmuddin Agus, James Cock, Joni Amsar, Rana Farrasati, Ridho Iskandar, Juan I. Rattalino Edreira, Shofia Saleh, Heri Santoso, Antonius P. Tito, Nadib Ulfaria, Maja A. Slingerland, Patricio Grassini
First Things First: Widespread Nutrient Deficiencies Limit Yields In Smallholder Oil Palm Fields, Hendra Sugianto, Juan Pablo Monzon, Iput Pradiko, Fatima A. Tenorio, Ya Li Lim, Christopher R. Donough, Sunawan, Suroso Rahutomo, Fahmuddin Agus, James Cock, Joni Amsar, Rana Farrasati, Ridho Iskandar, Juan I. Rattalino Edreira, Shofia Saleh, Heri Santoso, Antonius P. Tito, Nadib Ulfaria, Maja A. Slingerland, Patricio Grassini
Department of Agronomy and Horticulture: Faculty Publications
CONTEXT: Indonesia is the most important oil palm producing country. Nearly 40% of planted area is managed by smallholders, with yields well below the potential. Efforts to increase productivity have focused on the source of planting material, with little attention paid to plant nutrition.
OBJECTIVE: To assess the degree to which current productivity in smallholder oil palm fields is limited by nutrients in scenarios with distinct sources of planting material.
METHODS: We collected detailed data on leaf nutrient concentration from 30 fields to derive minimum sampling size needed to diagnose nutrient status. Subsequently, we collected data on …
Irrigation-As-A-Service For Smallholder Farmers, Ishani Lal
Irrigation-As-A-Service For Smallholder Farmers, Ishani Lal
Department of Agricultural Economics: Dissertations, Theses, and Student Research
Irrigation is a crucial management practice that can help increase food security among smallholders globally while mitigating climate change impacts. High-efficiency irrigation technologies such as drip kits and sprinkler systems are relatively expensive and smallholder farmers cannot afford them to buffer crop yields against low precipitation. In many developing countries, farmers participate in robust informal markets for renting and sharing of irrigation equipment. Such services may be operated by farmers or via a third party such as irrigation start-ups, water user associations, non-governmental organizations, or even government agencies. These services are referred to collectively as Irrigation-as-a-Service (IaaS).
The objective of …
Predicting Site‑Specific Economic Optimal Nitrogen Rate Using Machine Learning Methods And On‑Farm Precision Experimentation, Alfonso De Lara, Taro Mieno, Joe D. Luck, Laila A. Puntel
Predicting Site‑Specific Economic Optimal Nitrogen Rate Using Machine Learning Methods And On‑Farm Precision Experimentation, Alfonso De Lara, Taro Mieno, Joe D. Luck, Laila A. Puntel
Department of Agronomy and Horticulture: Faculty Publications
Applying at the economic optimal nitrogen rate (EONR) has the potential to increase nitrogen (N) fertilization efficiency and profits while reducing negative environmental impacts. On-farm precision experimentation (OFPE) provides the opportunity to collect large amounts of data to estimate the EONR. Machine learning (ML) methods such as generalized additive models (GAM) and random forest (RF) are promising methods for estimating yields and EONR. Twenty OFPE N trials in wheat and barley were conducted and analyzed with soil, terrain and remote-sensed variables to address the following objectives: (1) to quantify the spatial variability of winter crops yield and the yield response …
An Innovative Approach To Improve Oil Production And Quality Of Mustard (Brassica Juncea L.) With Multi-Nutrient-Rich Polyhalite, Biswajit Pramanick, B.S. Mahapatra, Debarati Datta, Prithwiraj Dey, S.P. Singh, Ajay Kumar, Bappa Paramanik, Neeraj Awasthi
An Innovative Approach To Improve Oil Production And Quality Of Mustard (Brassica Juncea L.) With Multi-Nutrient-Rich Polyhalite, Biswajit Pramanick, B.S. Mahapatra, Debarati Datta, Prithwiraj Dey, S.P. Singh, Ajay Kumar, Bappa Paramanik, Neeraj Awasthi
Department of Agronomy and Horticulture: Faculty Publications
Polyhalite popularly known as POLY4 is a multi-nutrient fertiliser containing K, S, Mg, Ca, and micronutrients. POLY4 has a low carbon footprint, is certified for organic agriculture, and has the potential to improve crop productivity and quality attributes Indian mustard which often faces challenges due to imbalanced nutrition supplied in the current fertilisation schedule. The hypothesis of the study was that the multi-nutrient fartiliser POLY4 can ensure balanced nutrition for Indian mustard. Considering this, a field experiment was conducted during the winter seasons of 2017–18 and 2018–19 to evaluate the effect of POLY4 on Indian mustard (Brassica juncea L.) …
Leaf, Plant, To Canopy: A Mechanistic Study On Aboveground Plasticity And Plant Density Within A Maize–Soybean Intercrop System For The Midwest, Usa, Elena A. Pelech, Jochem B. Evers, Taylor L. Pederson, David W. Drag, Peng Fu, Carl J. Bernacchi
Leaf, Plant, To Canopy: A Mechanistic Study On Aboveground Plasticity And Plant Density Within A Maize–Soybean Intercrop System For The Midwest, Usa, Elena A. Pelech, Jochem B. Evers, Taylor L. Pederson, David W. Drag, Peng Fu, Carl J. Bernacchi
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Plants have evolved to adapt to their neighbours through plastic trait responses. In intercrop systems, plant growth occurs at different spatial and temporal dimensions, creating a competitive light environment where aboveground plasticity may support complementarity in light-use efficiency, realizing yield gains per unit area compared with monoculture systems. Physiological and architectural plasticity including the consequences for light-use efficiency and yield in a maize-soybean solar corridor intercrop system was compared, empirically, with the standard monoculture systems of the Midwest, USA. The impact of reducing maize plant density on yield was investigated in the following year. Intercropped maize favoured physiological plasticity over …