Boron, manganese, copper, and zinc application in corn, soybean, barley, and wheat: an experimental dataset from southern Brazil

Abstract

The database compiles information from field experiments evaluating the application of the micronutrients boron, manganese, zinc, and copper to soybean, maize, wheat, and barley. These experiments were conducted between 2000 and 2003 by the Agrária Foundation for Agricultural Research (FAPA) in Guarapuava, in the South-Central region of Paraná State, Brazil, over three growing cycles. The trials were arranged in a crop rotation system under no-tillage, with increasing rates of each micronutrient applied to the respective crops. The database includes grain yield data as well as nutrient concentrations in leaves and grains. The mean yields (± standard deviation) were 2.89±0.53, 9.13±0.91, 2.62±0.75, and 1.69±0.28 t ha⁻¹ for soybean, maize, wheat, and barley, respectively. Micronutrient concentrations, expressed in mg kg⁻¹ and accompanied by their standard deviations, showed considerable variation among crops in both leaves and grains. In leaves, the concentrations were 28.6±12.2; 3.4±0.8; 23.4±7.6; and 11.5±4.3 for B, Cu, Mn, and Zn in barley; 25.2±7.9; 10.0±1.2; 30.5±7.8; and 14.6±1.7 in maize; 55.6±8.1; 11.4±4.7; 44.4±10.6; and 31.5±5.0 in soybean; and 16.4±6.4; 3.7±1.0; 32.7±6.8; and 16.2±7.0 in wheat. In grains, the respective values were 10.8±3.5; 4.8±0.7; 14.0±1.7; and 25.5±4.7 in barley; 10.3±2.7; 0.8±0.2; 4.6±0.6; and 9.9±1.2 in maize; and 53.2±24.1; 12.2±3.4; 20.9±1.9; and 32.4±5.0 in soybean, for B, Cu, Mn, and Zn, respectively.