• Evaluation of different cultivars and methods of planting for rain fed rice (Oryza sativa L.) in the context of climate change

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  • 01/04/2016

Jaykrit Singh completed this Msc thesis at the Sam Higginbottom Institute of Agriculture, Technology and Sciences (SHIATS), Allahabad, Uttar Pradesh, India within our project.


Rain fed ecosystems reflect the majority of the total rice growing area in India. Due to lack of water supply, these production systems are vulnerable to floods and droughts. Adaptive farming strategies present promising entry points to buffer the negative climate change effects.  
The objectives of the study were to find suitable genotypes for the agro-ecological zone[1], to evaluate appropriate planting methods as well as nutrient management practices and to determine economic parameters.

The study was carried out at 62 farmers’ fields in 10 villages of Mandla district during Kharif season in 2012. The on farm research trial was laid out in a randomized block design, consisting of three factors: rice genotypes[2], planting methods[3] and nutrient management options[4]. Measured parameters included growth factors, yield attributes, quality aspects and economic analysis.

The indigenous varieties performed substantially better compared to the high yielding varieties (HYV) concerning crop growth rate, (Luchai: 38.72 g m-2 day-1, HYV IR64: 15.19 g m-2 day-1), grain yield (Luchai: 18.09 t ha-1; HYV IR64: 2.58 t ha-1) and harvest index (Safari: 38.45%; HYV IR64: 27.20%). Concerning methods of planting, BPR[5] and CTR[6] achieved highest values for plant height (58.27 cm). SRI[7] and BPR achieved highest number of tillers hill-1 (10.40; 7.00, resp.) and highest values for dry weight (36.41; 23.01 g plant-1, resp.). The best B: C ratio was observed for BPR and SRI (1.62;1.60, resp.). Inorganic treatment[8] achieved slightly higher values compared to the organic sources for plant height, number of tillers hill-1 and relative growth rate and showed higher values for most yield attributes.

Indigenous varieties, the methods of planting SRI and BPR and the nutrient management, inorganic treatment, achieved best results for rain fed rice production in Mandla. Since the findings are based on the research done in one season it may be repeated for confirmation.

[1] AEZ-5: Sub-humid Tropical Hilly/Plateau

[2] Indigenous varieties: Luchai, Bhadochinga, Araigutta, Safari; high yielding varieties (HYV): MTU 1010, IR 64

[3] DSR: direct seeded rice; BRP: beushening puddled rice; CTR: conventional transplanting rice; SRI: system of rice intensification

[4] inorganic source: 50 kg N ha-1 through FYM + 3% Matka khaad ;organic source: 100 kg N ha-1 through Urea + 5.25 kg Zn ha-1 through Zinc Sulphate

[5] BPR: beushening puddled rice

[6] CTR: conventional transplanted rice

[7] SRI: system of rice intensification

[8] 50 kg N ha-1 through FYM + 3% matka khaad