Soil fertility and zinc application influences yield and zinc-iron nutrition in rice (Oryza sativa) under system of rice intensification and conventional methods

BIPLAB PAL; SUSHANTA SAHA; BHOLANATH SAHA; SUSMIT SAHA; SAJAL PATI; G.C. HAZRA

doi:10.59797/ija.v64i2.5253

Authors

BIPLAB PAL
SUSHANTA SAHA
BHOLANATH SAHA
SUSMIT SAHA
SAJAL PATI
G.C. HAZRA

DOI:

https://doi.org/10.59797/ija.v64i2.5253

Keywords:

Conventional method, Fe uptake, Grain yield, Rice, Soil fertility, SRI, Zn application, Zn up- take

Abstract

A field experiment was conducted during the winter (rabi) seasons of 201314 and 201415 in an Inceptisols of the Indo-gangetic plains of West Bengal, to evaluate the effect of soil-fertility levels and Zn application on yield, yield-attributing characters and ZnFe enrichment in the popularly grown rice (Oryza sativa L.) cultivars under sys- tem of rice intensification (SRI) and conventional method. The grain yield was found slightly higher (1.80% than SRI) under conventional system, while the straw yield was found higher under SRI (2.09% than the conventional system). Zinc application had profound influence on yield, yield-attributing characters and Zn content in different plant parts under both the systems. The increase in grain yield owing to zinc fertilization was more under conven- tional system (24.2, 25.4 and 26.9% at low, medium and high fertility levels respectively) than SRI. Zinc enrich- ment to the tune of 16.1% was observed owing to zinc fertilization but it significantly decreased 5.02% Fe content in the rice grain, indicating a phenomenon of possible Zn-Fe antagonism. Therefore, the conventional system was found superior to SRI so far yield, yield-attributing characters and Zn and Fe content in rice are concerned.

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