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Project Details:
Methodology
Justification
Objectives
Yield-limiting boron deficiencies were documented for the first time in several eastern Arkansas counties during the 2001 soybean crop. In Cross County alone, more than 5000 acres planted to soybeans were severely affected by this nutritional deficiency (Rick Wimberley, CEA-Cross County). Boron levels in soil and tissue samples collected from affected soybean fields in Cross, Woodruff, Poinsett, Lawrence, and Jackson counties were significantly lower than those considered optimum for soybean production (Nathan Slaton, personal communication).
Although B fertilization is a common practice in the production of alfalfa, cotton and some vegetables, very limited information is available on best management practices for B fertilization of soybeans under Arkansas conditions. Furthermore, the reliability of the hot-water extraction as the method of choice for the assessment of plant-available B levels in soils and tissue parts has been questioned (Sims and Johnson, 1991).
The information generated from the proposed study, together with on-going efforts, will allow for the development of cultural practices that will reduce the potential for low yields caused by B-related deficiencies.
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