Effect of Zinc and Boron Fertilizer Application on Uptake of Some Micronutrients into Grain of Rice Varieties

摘要

Field experiment was conducted to assess the response of five rice varieties; IR6, IR8, DR92, DR84 and Shahkaar at different treatments of fertilizers. Higher uptakes; 4.08± 0.37, 4.72±0.45, 3.88±0.24, 2.47±0.09, 4.08±0.14 μg g1 of boron; 15.08±0.83, 12.29±0.05, 13.35±0.57, 11.67±0.3, 15.65±0.21 μg g1of Zn and 36.98±0.5, 23.65±0.0.59, 28±0.41, 28.2±0.39, 30.31±0.89 μg g 1of Fe was recorded in IR6, IR8, DR92, DR83 and Shahkaar respectively at T2. Cu contents of the varieties IR8, DR92, DR84 showed an increase than Shahkaar and IR6 over Zn and B application. Higher uptake of Mn: 33.23±0.1 in IR8; 33.43± 0.6 in DR92 and 31.12±1.0 μg g 1 in Shahkaar, respectively were found at T2. Micronutrients B, Zn, Cu, Fe uptakes into grain of the varieties; IR8, DR92, IR6 and DR83 significantly (P< 0.05) increased at T1 and T2. Similar increasing trend for Mn uptake in all other varieties than IR8 and DR83 was found. It could be concluded that application of Zn and B at the doze 10 and 2 Kgha 1 in addition to recommended doses of N and P may be applied to rice crops for better nutritional contents within grains.