 |
ProCrop 1999 |
DETERMINING YIELD PROBABILITY BASED ON SOIL MOISTURE
Studies at NDSU have indicated that 5 inches of water is needed by wheat to reach the heading growth stage. After this requirement is met, each additional inch of water will produce 4-7 bushels of wheat. The water can be provided by soil or rainfall.
Sandy soils hold about 1 inch of plant available water, clay soils about 2 inches and loam soils 2.25 inches per foot of soil at field capacity. Average May, June, July rainfall in our area is about 8 inches. Rainfall depending on crop growth stage, is more efficiently used in June than in other months, which may provide increased yields above predicted yields.
Yield Bu/A |
||
| Total Water Available | Wheat | Barley |
| 8 | 12-21 | 21-30 |
| 9 | 16-28 | 28-40 |
| 10 | 20-35 | 35-50 |
| 11 | 24-42 | 42-60 |
| 12 | 28-49 | 49-70 |
| 13 | 34-56 | 56-80 |
| 14 | 38-63 | 63-90 |
| 15 | 42-70 | |
| 16 | 46-77 | |
Back to Soils Menu
Back to Main ProCrop Index
| Terry Gregoire, Area Extension Specialist/Cropping Systems NDSU Extension Service Box 477, Traynor Building Devils Lake, ND 58301-0477 |
Phone No.(701)662-7080 FAX (701) 662-1365 tgregoir@ndsuext.nodak.edu |
