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Ec91-136 Managing Deficient Soybean Stands, Gary E. Pepper, David B. Willmot
Ec91-136 Managing Deficient Soybean Stands, Gary E. Pepper, David B. Willmot
University of Nebraska-Lincoln Extension: Historical Materials
Soybean producers whose crops suffer poor stand emergencemay wonder whether or not replanting presents a viable economic alternative. Sometimes growers elect to replant deficient stands, but doing so can add considerable expense to their operations through the costs for seed, tillage operations, and perhaps even herbicides. The grower's economic risk is compounded by the possible loss in potential yield due to late seeding, which eventually leads to a reduction in net profit. Making the decision to either replant or stick with a somewhat deficient field is difficult.
The information in this circular is intended to help growers decide which course …
Ec91-735 The Impact Of Nitrogen And Irrigation Management And Vadose Zone Conditions On Ground Water Contamination By Nitrate-Nitrogen, K.D. Frank, Darrell Watts, Andrew Christiansen, Edwin Penas
Ec91-735 The Impact Of Nitrogen And Irrigation Management And Vadose Zone Conditions On Ground Water Contamination By Nitrate-Nitrogen, K.D. Frank, Darrell Watts, Andrew Christiansen, Edwin Penas
University of Nebraska-Lincoln Extension: Historical Materials
The single largest contaminant found in ground water samples taken throughout Nebraska is nitrate-nitrogen (nitrate-N). Much of it reaches the ground water as a "non-point source" contaminant leached out of the crop root zone.
Nitrate-N is essential to corn production. However, when leached from the crop root zone it can become a major source of ground water contamination. There are serious contamination problems in shallow aquifers beneath several river valleys in Nebraska. Increasing nitrate-N concentrations are beginning to appear in deeper aquifer.
Ec91-123 Drought Management On Range And Pastureland: A Handbook For Nebraska And South Dakota, Patrick E. Reece, Jack D. Alexander, James R. Johnson
Ec91-123 Drought Management On Range And Pastureland: A Handbook For Nebraska And South Dakota, Patrick E. Reece, Jack D. Alexander, James R. Johnson
University of Nebraska-Lincoln Extension: Historical Materials
Drought is generally defined as a prolonged period during which annual precipitation is less than 75 percent of average. Based upon this definition, drought has occurred in 21 percent of the years in the northern Great Plains since 1940. Poor distribution of precipitation in a single year or less than average precipitation in successive years can also cause drought conditions.
This extension circulation discusses the following: how plants respond to drought, management preparation for drought, herd management, animal response to drought, predicting forage production and stocking rates, drought management plans, rangeland resource inventory, grazing management, and plant recovery after drought.