A5079325829- Crop Yield and Soil Fertility
- Genetics and Plant Breeding
- Plant nutrient uptake and metabolism
- Rice Cultivation and Yield Improvement
- Bioenergy crop production and management
- Plant responses to elevated CO2
- Genetic Mapping and Diversity in Plants and Animals
- Soil and Water Nutrient Dynamics
- Soil Carbon and Nitrogen Dynamics
Animal, Food and Health Sciences
2024
Commonwealth Scientific and Industrial Research Organisation
2024
Agriculture and Food
2024
Purdue University West Lafayette
2018-2023
State Street (United States)
2021
National Agricultural Technology Institute
2020
National University of Mar del Plata
2013
Quantifying historical changes in maize harvest index (HI), the fraction of above-ground biomass allocated to grain yield, can enhance our ability explain yield trends and estimate stover carbon inputs for sustainability assessments. However, HI genetic gain has not been primary focus previous era studies. The aim this study is knowledge gain. Our first objective quantify Bayer Crop Science Legacy hybrids investigate contribution breeding agronomic management. second develop a general-use...
Maize (Zea mays) grain yield has been described to be particularly susceptible environmental conditions around silking; however, a better temporal description of the effect resource deprivation during this period is needed. Additionally, progress and subsequent increase in demand assimilates may result source limitation grain-filling current hybrids. This work assessed (i) short (~5 days) intense shading stresses imposed at different times, (ii) thinning effective period, on components an...
Development of semi-dwarf wheat (Triticum aestivum) and rice (Oryza sativa) led to increased yields agronomic efficiencies with less lodging. While these short-stature cereals have become common in global crop production, commercial maize (Zea mays L.) hybrids remain tall. There is no information currently available on plant N uptake or yield responses timing for short stature hybrids. We tested three hypotheses tall 1) would similar response in-season application compared hybrids, 2) dry...
Abstract Maize breeding programs have indirectly altered many plant traits; however, our knowledge of some important phenological traits remains unexplored. One such trait is leaf appearance rate, which crucial for predicting maize development. We studied 40 short‐season (103‐day) and 38 long‐season (111‐day) hybrids released from 1980 to 2020 by Bayer Crop Science. Measurements included weekly counting collared leaves across 13 experiments in the US Corn Belt. The progression number was...
Progressive N assimilation by maize kernels may constrain dry matter (DM) accumulation and final kernel weights (KW). We sought to better understand whole-plant mechanisms associated with incremental DM patterns in during grain fill. Maize was grown multiple fertilizer rates timings or plant densities achieve a wide availability gradient. Whole-plant sampling enabled determination of apparent nutrition sufficiency at flowering (NNIR1) when linear-fill began (NNIR3). Linear-plateau,...
Although kernel weight (KW) has proven to be an increasingly important driver behind grain yield (GY) variability in modern maize hybrids, nitrogen's (N) role the determination of individual sink capacity (i.e., potential KW) during lag phase reproductive development remains unclear. The research objective was study relationships between endosperm cell number (ECN) (an indicator and final KW within context changing plant N dynamics field-grown phase. Field experiments tested 3–4 rates at...
Differences in maize kernel weight (KW) due to soil N availability have usually been associated with the indirect role that plays prevailing source-sink balance for carbon at canopy level during reproductive development. Additionally, KW changes also described response assimilate supply tissues (i.e., direct role). Our objective was determine most important source factors driving gains varying and dry matter via multivariate study of pertinent phenotypic relationships late vegetative growth....
Abstract Despite a historical favoring of robust tall plants in maize ( Zea mays L.) production systems as potential indicator increased total and/or grain biomass yields, short‐statured is receiving renewed commercial attention North America. Little known the relative N efficiencies resulting from inter‐stature differences dry matter formation and processes during pre‐ post‐silking stages. To investigate this, two field rainfed experiments were conducted West Lafayette, IN. The included...
Soil sampling may be used as a decision-making tool for late-vegetative stage nitrogen (N) fertilizer applications in corn (Zea mays L.). Recommended strategies following banded commonly suggest taking cores from both on the band (B) and off (O-B), however we hypothesized that soil nitrate concentrations (NO3−ppm) O-B were not influenced by N application rate. Analyzing samples six experiments, found there was strong relationship between NO3−ppm applied rate B, but position. Power analysis...