Study of Growth Indices and Chlorophyll content in kharif Rice as Influenced by Irrigation Scheduling and Bio-inoculants Enriched Municipal Solid Waste Compost

Author: Monalisa Sahoo, Yashwant Singh, Avijit Sen, Ram Kumar Singh and Rakhi Mahto

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Abstract

Irrigation as well as nutrient management plays an important role in rice growth and photosynthetic activity leading to increased crop yield. Therefore, making it essential to study the growth indices throughout the growing season. Also, long-term intensive rice cultivation using traditional methods has been linked with severe problems especially groundwater depletion and multiple nutrient deficiencies raising concerns with respect to sustainable rice growth and production. To address this issue, a two-year experiment was conducted to investigate the effect of irrigation schedule and bio-inoculants enriched municipal solid waste compost on kharif rice in Varanasi, U.P., India. The experiment was laid out in split plot design with four irrigation scheduling treatment in main plot viz. Alternate wetting and drying, Saturation (at field capacity), 2.5 cm irrigation at 7 days, 5 cm irrigation at 7 days and five treatments in sub plot viz. NPK (RDF), NPK (RDF)+MSW@10 t ha-1, NPK (RDF)+MSW(N

Keywords

Irrigation scheduling, E-MSW (Enriched Municipal solid Waste compost), LAI, CGR, Chlorophyll content and NAR

Conclusion

Incorporation of E-MSW (Enriched Municipal Solid Waste compost) along with inorganic fertilizers into rice field could improve the growth indices viz., LAI, CGR, RGR as well as the chlorophyll content of the crop. When comes to different irrigation scheduling, however, it is evident that beneficial effects of the combined application of chemical fertilizers and enriched municipal solid waste are significantly different. Saturation (at field capacity) significantly increased the LAI, CGR as well as the chlorophyll content of rice crop as compared to other irrigation scheduling treatments. However, the alternate wetting and drying showed significantly lower growth indices by the rice plants.

References

Rice (Oryza sativa L.) is a primary source of food consumed by more than 3 billion people across the world and hence, deserves a special status among the cereals. In terms of production, India holds the second rank after China and hence, rice has a great importance in Indian agriculture as well as the economy generated by it. In India, rice is cultivated in 44.72 m ha, with a total production of around 117.47 million tonnes (Anonymous, 2020-21) but productivity as low as 2.65 t/ha (Agricultural Statistics at a Glance, 2019). According to the projections made by the Population Foundation of India, the country’s population will be 1824 million by the end of 2050. To feed these population, demand of rice will be 137.3 million tonnes by the year 2050 (Vision 2050). Therefore, exploring ways to produce more with less is essential for food security and sustaining environmental health. Traditional method of transplanting under continuous submergence has been prevailing as the most common m

How to cite this article

Monalisa Sahoo, Yashwant Singh, Avijit Sen, Ram Kumar Singh, Rakhi Mahto (2022). Study of Growth Indices and Chlorophyll content in kharif Rice as Influenced by Irrigation Scheduling and Bio-inoculants Enriched Municipal Solid Waste Compost. Biological Fo