Soybean Plant Response to Temporary Field Windbreaks
1970
Radke, J. K. | Burrows, W. C.
Small temporary windbreaks consisting of corn rows or snowfence were spaced at various intervals in soybean fields in western Minnesota. Data from 11 location-years showed that soybeans sheltered by temporary corn windbreaks grew taller, produced more dry weight, had a larger leaf area index, and produced higher grain yields. Soybean rows adjacent to corn windbreaks did not do as well as the rest of the windbreak-sheltered soybeans because of shading effects and root competition from the corn. There was no statistical difference in wateruse; however, water-use efficiency was increased due to higher soybean yields. Results obtained with snow-fence windbreaks were similar, but to a lesser extent than those obtained with corn windbreaks. Windbreaks oriented in an east-west direction were more effective than windbreaks oriented hi a northsouth direction since the prevailing summer winds in western Minnesota are south to southeasterly. Windbreak spacings between 6 H and 15 H (H = height of windbreak) were effective, and it is possible that windbreaks pacings greater than 15 H would be effective
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