Vol. 7, Issue 4 (2019)
Studies on the effect of water regimes and organics on nutrients uptake, soil fertility and yield of rice (Oryza sativa L)
Author(s): Maheshwaran K and M Babu
Abstract: Field experiment was conducted at Soil and Water Management Research Institute, Kattuthottam, Thanjavur during navarai (December to March) season of 2017 - 2018 to study the effect of water regimes and organics on water use efficiency, water productivity and yield of rice. The field experiment was laid out in split plot design with three replications. The experiment consisted of three water regimes viz., Irrigation on the day disappearance of ponded water (M1), Irrigation on two days after disappearance of ponded water (M2) and Irrigation on five days after disappearance of ponded water (M3) as main plots and six sub plots treatments viz., control (without organic and inorganic) (S1), green manure @ 6.25 t ha-1 (S2), farm yard manure @ 12.5 t ha-1 (S3), vermicompost @ 5 t ha-1 (S4), coir pith compost @ 12.5 t ha-1 (S5) and poultry manure @ 5 t ha-1 (S6). Water regimes and organics significantly influenced nutrients uptake, soil fertility and yield of rice. The maximum values of N, P and K uptake were recorded under irrigation on the day of disappearance of ponded water. Among organic sources, poultry manure @ 5 t ha-1 recorded higher nutrients uptake. Among the interactions, irrigation on the day of disappearance of ponded water with poultry manure @ 5 t ha-1 significantly recorded higher N, P and K uptake. Poultry manure @ 5 t ha-1 registered significantly increases the soil fertility and it was followed by green manure @ 6.25 t ha-1. Irrigation on the day disappearance of ponded water recorded higher yield followed by irrigation on two days after disappearance of ponded water. Among organics, poultry manure @ 5 t ha-1 significantly contributes yield of rice. Irrigation on the day disappearance of ponded water with poultry manure @ 5 t ha-1 registered higher yield.
Pages: 388-394 | 347 Views 54 Downloads
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How to cite this article:
Maheshwaran K, M Babu. Studies on the effect of water regimes and organics on nutrients uptake, soil fertility and yield of rice (Oryza sativa L). Int J Chem Stud 2019;7(4):388-394.
