Grain Zinc and Yield Responses of Two Rice Varieties to Zinc Biofortification and Water Management

Zinc (Zn) biofortification can improve grain yield and nutritional quality in rice, but its effectiveness is subject to agronomic practices other factors. In a previous study, the application of Zn soil enhanced lowland rice well-drained waterlogged soil, whereas upland increased only soil. This new study explores hypothesis that foliar enhance grown under conditions. Two varieties, CNT1 (wetland rice) KH CMU (upland were containers or with three treatments (no Zn, Zn). For treatment, 50 kg ZnSO4 ha−1 was applied before transplanting. 0.5% (equivalent 900 L ha−1) at booting repeated flowering milky growth stages. Grain 15.9% higher than plants, water regime had no effect on CMU. concentration from 19.5% 32.6% above control when plants Zn. CMU, there an interaction between treatment. Application by 44.6% 14.7% The results indicate strong effects variety, fertilizer rice. Thus, selection varieties growing conditions should be considered order for producers achieve desirable outcomes high concentrations.