Ntrm, a Soil-Crop Simulation Model for Nitrogen, Tillage, and Crop-Residue Management (Classic Reprint) - Hardcover

Inhaltsangabe

Excerpt from Ntrm, a Soil-Crop Simulation Model for Nitrogen, Tillage, and Crop-Residue Management<br/><br/>Timeoutput appears reasonable over the expected range of input parameters Graphical output has been used to a real advantage in these yses. Field testing of the overall integrated model has been a continuing process as additional data sets are yzed. For example, corn yield results for four different locations, three in Minnesota and one in Ohio, are presented in figure Yield differences seen here are primarily the result of climatic differences as opposed to variations in management. Figures and are examples of crop dry matter production and crop nitrogen uptake curves, in this case for predicted and Observed corn data collected on a control site at Apple Valley, mn. The model run indicated that nitrogen was not limiting and a relatively shallow root system would be expected because of ample nutrient availability and moist soil conditions at shallow depths. This was confirmed by root samples in the field.

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