Location: Adaptive Cropping Systems Laboratory
Title: Models can be useful to study spatial variability and its effects on plant processes at a range of scalesAuthor
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Submitted to: Meeting Abstract
Publication Type: Abstract Only Publication Acceptance Date: 10/31/2018 Publication Date: N/A Citation: N/A Interpretive Summary: Technical Abstract: The spatial variability of soil properties can affect crop development and yield at a range of scales, from the root zone between plants to variation in topographic properties. Crop simulation models can be useful to study these interactions but different types of models would be appropriate for different scales. Most crop models are 1D representations of plant and soil processes. Here we will show how a model with two dimensional soil processes can be used to study the effects of variable soil properties between plants on plant dynamics. In the second application we will show how a simple plant model can be used to evaluate soil water holding capacity on a landscape scale. We will extend these results to show how we can bridge the large and small scale variability. Another application takes advantage of the fact that spatial and temporal variability of yields often mirror each other. We can use time series of crop model results to investigate yield stability and how nitrogen and water management impact it. |
