Interaction Effect of Zinc and Nitrogen on Growth and Yield of Barley (Hordeum vulgare L.) on Typic Ustipsamments

摘要

In a field experiment on loamy sand soil (Typic Ustipsamments), application of zinc and nitrogen enhanced the grain and straw yield of barley (Hordeum vulgare L.). Grain and straw yield increased significantly with the application of Zn and N at the rate of 50 kg Zn ha~(-1) and 60 kg N ha~(-1), respectively. Yield components like effective tillers, ear length, number of grains pet ear and test weight increased significantly with the application of 5.0 kg Zn and 60 kg N ha~(-1) as compared to lower levels. Higher doses of Zn and N increased yield and yield components non-significantly. The interaction effect of ZnxN on grain yield was found to be significant. The combined application of 7 5 kg Zn along with 90 kg N ha~(-1) registered the maximum grain yield of 49 20 q ha~(-1) and straw yield of 72,6 q ha~(-1) which was 21.17 and 28,58 q ha~(-1) additional over control.