Nutrient dynamics of Rice Varieties Influenced by Planting Geometry under Semi Dry Cultivation

Author: K.K. Ajmal, P.S. Fathima, K. N. Kalyana Murthy, S. Ganapathi, G.R. Denesh and S.S. Prakash

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Abstract

Rice is the most important food crop grown in India. Lack of suitable varieties and improper planning geometry are the major challenges in the direct seeded rice ecosystem. A study was conducted at College of Agriculture, (V.C. Farm), Mandya, University of Agricultural Sciences, Bengaluru during kharif 2019 and 2020 to find out optimum planting geometry for rice varieties under semi dry condition for higher productivity. The experiment was laid out in split-plot design and replicated thrice comprising of treatments two row spacing’s (20 cm and 30 cm) assigned to main plots. Each main plot was further divided into eight sub-plots to accommodate eight plant varieties (V1-KMP-175, V2- RNR-15048, V3- RNR-15038, V4- Rasi, V5- MTU-1001, V6- MTU-1010, V7- IR-64, V8- Gangavathi sona). 20 cm row spacing recorded significantly higher nutrient uptake and nutrient use efficiency compared to 30 cm row spacing. Whereas in varieties KMP-175 recorded higher nutrient uptake and nutrient use efficiency over other varieties.

Keywords

Semi dry rice, row spacing, nutrient uptake, nutrient use efficiency

Conclusion

From the investigation it can be recommended that growing of semi dry rice variety KMP-175 in 20 cm row spacing under semi dry method of rice cultivation is beneficial compared to wider spacing and other varieties under southern dry zone of Karnataka.

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How to cite this article

K.K. Ajmal, P.S. Fathima, K. N. Kalyana Murthy, S. Ganapathi, G.R. Denesh and S.S. Prakash (2023). Nutrient dynamics of Rice Varieties Influenced by Planting Geometry under Semi Dry Cultivation. Biological Forum – An International Journal, 15(7): 136-140.