Model of yield response of corn to plant population and absorption of solar energy

Biomass yield of agronomic crops is influenced by a number of factors, including crop species, soil type, applied nutrients, water availability, and plant population. This article is focused on dependence of biomass yield (Mg ha(-1) and g plant(-1)) on plant population (plants m(-2)). Analysis inclu...

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Published in:PloS one 2011-01, Vol.6 (1), p.e16117-e16117
Main Authors: Overman, Allen R, Scholtz, 3rd, Richard V
Format: Article
Language:English
Subjects:
Absorption
Agricultural production
Agriculture
Agronomic crops
Agronomy
Analysis
Bioengineering
Biology
Biomass
Biomass energy production
Canopies
Computer Science
Corn
Cotton
Crop science
Crop yield
Crop yields
Crops
Crops, Agricultural
Data analysis
Data processing
Engineering
Experiments
Gossypium hirsutum
Mathematical models
Models, Biological
Nutrients
Nutrients in soil
Plant populations
Plants (botany)
Population density
Potatoes
Radiation (Physics)
Soil fertility
Soil nutrients
Soil sciences
Soil water
Solar Energy
Solar radiation
Studies
Sunlight
Tobacco
United States
Warm seasons
Water availability
Zea mays
Zea mays - growth & development
Zea mays - radiation effects
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description Biomass yield of agronomic crops is influenced by a number of factors, including crop species, soil type, applied nutrients, water availability, and plant population. This article is focused on dependence of biomass yield (Mg ha(-1) and g plant(-1)) on plant population (plants m(-2)). Analysis includes data from the literature for three independent studies with the warm-season annual corn (Zea mays L.) grown in the United States. Data are analyzed with a simple exponential mathematical model which contains two parameters, viz. Y(m) (Mg ha(-1)) for maximum yield at high plant population and c (m(2) plant(-1)) for the population response coefficient. This analysis leads to a new parameter called characteristic plant population, x(c) = 1/c (plants m(-2)). The model is shown to describe the data rather well for the three field studies. In one study measurements were made of solar radiation at different positions in the plant canopy. The coefficient of absorption of solar energy was assumed to be the same as c and provided a physical basis for the exponential model. The three studies showed no definitive peak in yield with plant population, but generally exhibited asymptotic approach to maximum yield with increased plant population. Values of x(c) were very similar for the three field studies with the same crop species.
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subjects Absorption
Agricultural production
Agriculture
Agronomic crops
Agronomy
Analysis
Bioengineering
Biology
Biomass
Biomass energy production
Canopies
Computer Science
Corn
Cotton
Crop science
Crop yield
Crop yields
Crops
Crops, Agricultural
Data analysis
Data processing
Engineering
Experiments
Gossypium hirsutum
Mathematical models
Models, Biological
Nutrients
Nutrients in soil
Plant populations
Plants (botany)
Population density
Potatoes
Radiation (Physics)
Soil fertility
Soil nutrients
Soil sciences
Soil water
Solar Energy
Solar radiation
Studies
Sunlight
Tobacco
United States
Warm seasons
Water availability
Zea mays
Zea mays - growth & development
Zea mays - radiation effects
title Model of yield response of corn to plant population and absorption of solar energy
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