Recovery and Nutrient Content of Sanblasted Soybean Seedlings1
- D. V. Armbrust2
Soybean [Glycine max (L.) Merr.] seedlings were exposed to a 13.4-m/sec wind velocity and wind plus sand (<1.17 mm diameter) for 0, 5, 10, and 15 min at 6 g/un width/min to study the effect of wind and sandblast injury on their growth and nutrient content. Soybeans can tolerate a soil loss of 6 g/cm width for 5 min without a significant (5% level) reduction in vegetative yield. Expnsures to wind or wind plus sand increased the nitratenitrogen concentration 443 ppm for the 5-min wind treatment to 1,390 ppm for the 15-min wind plus sand treatment. Iron concentration was increased only where vegetative production was unaffected, i.e., 5-min wind, 5-min wind plus sand, and IO-min wind. Other nutrient concentrations were unaffected by the treatments. Sandblast injury can change a plant's metabolic processes before there is any visual damage.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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