Volume : III, Issue : V, May - 2013

Response of Rice Genotypes to Zinc Fertilization in Typic Haplustert Soil

Muthukumararaja T. , M. V. Sriramachandrasekharan

Abstract :

Zinc deficiency of lowlands rice has been identified as the major cause of low yield. A large population of the world as a result of this also lacks adequate zinc nutrition. A pot culture study was conducted on Kondal series Typic Haplusterts) deficient in zinc to evaluate the response of rice genotypes to zinc addition. Ten rice genotypes was tested at two (0, 5 mg kg–1) levels of zinc. Genotypes differed significantly in grain yield, zinc uptake and zinc use efficiency due to zinc addition. The percent increase in grain yield ranged from 4.2 to 13.5 among rice genotypes on addition of 5 ppm Zn over control. Overall there was 5.75% increase in grain yield when 5 ppm Zn was applied. Similar effect was also noticed with respect to Straw. Zinc uptake among rice genotypes ranged from 422.7 to 2035 µg / pot due to 5 ppm Zn addition. . The percent increase in grain Zn uptake ranged from 46.49 to 94.7 and straw Zn uptake ranged from 31.4 to 50.99 among rice genotypes on addition of 5 ppm Zn over control. Wide variation exited among genotypes with respect to zinc use efficiency. Genotype ADT 48 registered the highest zinc sufficiency in all except apparent Zn recovery. Apparent Zn recovery had significant linear relationship with grain yield and grain Zn uptake.  

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Muthukumararaja T., M.V. Sriramachandrasekharan Response of Rice Genotypes to Zinc Fertilization in Typic Haplustert Soil Indian Journal of Applied Research, Vol.III, Issue.V May 2013

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