- Date: June 23, 2017
- Source: Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign
- Summary:
- Scientists have developed a computer model to predict the yield of different crop cultivars in a multitude of planting conditions. The model depicts the growth of 3-D plants, incorporating models of the biochemical and biophysical processes that underlie productivity.
FULL STORY
Sugarcane planted in with traditional spacing (pictured here) is better for yields but may be worse for plants and soil quality.
Credit: Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign
As farmers survey their fields this
summer, several questions come to mind: How many plants germinated per
acre? How does altering row spacing affect my yields? Does it make a
difference if I plant my rows north to south or east to west? Now a
computer model can answer these questions by comparing billions of
virtual fields with different planting densities, row spacings, and
orientations.
The University of Illinois and the Partner Institute for
Computational Biology in Shanghai developed this computer model to
predict the yield of different crop cultivars in a multitude of planting
conditions. Published in BioEnergy-Research, the model depicts
the growth of 3D plants, incorporating models of the biochemical and
biophysical processes that underlie productivity.
Teaming up with the University of Sao Paulo in Brazil, they used the model to address a question for sugarcane producers: How much yield might be sacrificed to take advantage of a possible conservation planting technique?
"Current sugarcane harvesters cut a single row at a time, which is time-consuming and leads to damage of the crop stands," said author Steve Long, Gutgsell Endowed Professor of Plant Biology and Crop Sciences at the Carl R. Woese Institute for Genomic Biology. "This could be solved if the crop was planted in double rows with gaps between the double rows. But plants in double rows will shade each other more, causing a potential loss of profitability."
The model found that double-row spacing costs about 10% of productivity compared to traditional row spacing; however, this loss can be reduced to just 2% by choosing cultivars with more horizontal leaves planted in a north-south orientation.
"This model could be applied to other crops to predict optimal planting designs for specific environments," said Yu Wang, a postdoctoral researcher at Illinois who led the study. "It could also be used in reverse to predict the potential outcome for a field."
The authors predict this model will be especially useful when robotic planting becomes more commonplace, which will allow for many more planting permutations.
Teaming up with the University of Sao Paulo in Brazil, they used the model to address a question for sugarcane producers: How much yield might be sacrificed to take advantage of a possible conservation planting technique?
"Current sugarcane harvesters cut a single row at a time, which is time-consuming and leads to damage of the crop stands," said author Steve Long, Gutgsell Endowed Professor of Plant Biology and Crop Sciences at the Carl R. Woese Institute for Genomic Biology. "This could be solved if the crop was planted in double rows with gaps between the double rows. But plants in double rows will shade each other more, causing a potential loss of profitability."
The model found that double-row spacing costs about 10% of productivity compared to traditional row spacing; however, this loss can be reduced to just 2% by choosing cultivars with more horizontal leaves planted in a north-south orientation.
"This model could be applied to other crops to predict optimal planting designs for specific environments," said Yu Wang, a postdoctoral researcher at Illinois who led the study. "It could also be used in reverse to predict the potential outcome for a field."
The authors predict this model will be especially useful when robotic planting becomes more commonplace, which will allow for many more planting permutations.
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