Vol. 17 No. 2
Effect of different levels of nitrogen and zeolite on nutrient uptake and nitrogen use efficiency in rice
Author(s): V.B. PANDIT, K. JEEVAN RAO, M. R. NAIK AND G. E. CH. VIDYA SAGAR
Abstract: The pot culture experiment was conducted to investigate the effect of nitrogen and zeolite on nutrient content, uptake and nitrogen use efficiency in rice under greenhouse condition during wet season of 2018-19. The results showed that nitrogen, phosphorus and potassium content, uptake and nitrogen use efficiency in rice were increased with increasing nitrogen and zeolite levels. Higher nitrogen, phosphorus and potassium content and uptake in rice grain and straw was achieved with 120 kg N ha-1 and 9 t ha-1 zeolite due to more availability of nutrient in 120 kg N ha-1 and 9 t ha-1 zeolite interaction. Nitrogen recovery in rice by the application of zeolite and nitrogen in different levels was varied from 13.56 to 77.99 %.Highest nitrogen recovery in rice was 77.99% achieved by the application of 120 kg N ha-1 and 9 t ha-1. Agronomical nitrogen use efficiency in rice was varies from 9.27 to 32.59 g grain g -1 N applied with the application of different levels of nitrogen and zeolite. N3Z4 interaction (120 kg N ha-1 and 9 t ha-1 zeolite) recorded highest agronomical nitrogen use efficiency in rice which was 32.59 g grain g -1 N applied. The result of present study indicates that nitrogen, phosphorus and potassium content, uptake in grain and straw were significantly increased with the use of 120 kg N ha-1 and 9 t zeolite ha-1.
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