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Articles 31 - 32 of 32
Full-Text Articles in Life Sciences
Volunteer Glyphosate-Resistant Corn And Soybean Competition And Control, Jill Alms
Volunteer Glyphosate-Resistant Corn And Soybean Competition And Control, Jill Alms
Electronic Theses and Dissertations
The continuous use of glyphosate-resistant crops has resulted in volunteer crops with the same herbicide resistance as the cash crop and an increasing weed problem. Volunteer corn reduces soybean yields however; little research has examined corn yield loss due to volunteer corn or volunteer soybean competition. These studies investigated yield loss and control of volunteer soybean in corn, and volunteer corn in soybean and corn. Using several densities of competitive plants, the yield loss was fit to a hyperbolic equation that indicated incremental yield loss (I value) to be 29.9 for volunteer corn in soybeans, 5.6 for volunteer corn in …
Drip And Sprinkler Irrigation Of Carrots And Onions, James D. Melstad
Drip And Sprinkler Irrigation Of Carrots And Onions, James D. Melstad
Electronic Theses and Dissertations
Many specialty crops, especially vegetables, are shallow rooted and sensitive to periods of moisture stress. This makes irrigation of vegetables necessary to their production in South Dakota since summer rainfall is normally both inadequate and undependable. A study was initiated in conjunction with the South Dakota Agricultural Experiment Station and the Water Resources Institute to evaluate irrigation of specialty crops in eastern South Dakota. Drop and sprinkler irrigation were utilized for the irrigation of two specialty crops presently grown in South Dakota, carrots and onions. The study was initiated with the following objectives: 1. To compare carrots and onion yields …