Micronutrients delineation work conducted in Bihar under All India Coordinated Scheme of Micronutrients in soils and Plants Indicated that more than 75% soils in calcareous belt of north Rihar are deficient in available Zn (Anonymous, 1973). Zinc deficiency symptoms have been observed on many crops (Sakal, 1977: Sakal and Singh. 1979). Most of the farmers of this belt are not fully conversant with this malady. Hence a multilocational trial on zine response was conducted on farmers field toking rice variety 'Jaya' as a test crop.
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