Growth and Productivity Response of Rice to Applied Zinc and Organic Manure

Muthukumararaja, T.; Sriramachandrasekharan, M.V.

Growth and Productivity Response of Rice to Applied Zinc and Organic Manure

2020

Muthukumararaja, T. | Sriramachandrasekharan, M.V.

The objective of this research was to find out the impact of zinc and organic fertilization on the productivity of rice. Two separate field experiments were conducted in a zinc deficient soil belonging to Typic Haplusterts and Typic Ustifluvents during Rabi 2011–2012. The results revealed that grain and straw yield was significantly enhanced on addition of zinc or organics or both over control in both soils. The rice yield increased with zinc doses and maximum yields was noticed with 5 mg Zn kg⁻¹ and declined at 7.5 mg Zn kg⁻¹. While addition of poultry manure recorded the maximum rice yields and was on par with vermicompost. However the highest grain yield (6103, 6344 kg ha⁻¹) and straw yield (8369, 8459 kg ha⁻¹) was recorded with application of 5 mg Zn kg⁻¹ and poultry manure in Vertisol and Entisol respectively. Similarly, addition of 5.0 mg Zn kg⁻¹ along with poultry manure @ 10 t ha⁻¹ registered the highest growth traits it was comparable with vermicompost at same level of zinc, but superior to other treatment combination.

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