Assessment of different methods of rice (Oryza sativa. L) cultivation affecting growth parameters, soil chemical, biological, and microbiological properties, water saving, and grain yield in rice–rice system

Gopalakrishnan, S and Mahender Kumar, P and Humayun, P and Srinivas, V and Ratna Kumari, B and Vijayabharathi, R and Singh, A and Surekha, K and Padmavathi, Ch and Somashekar, N and Rao, P R and Latha, P C and Subba Rao, L V and Babu, V R and Viraktamath, B C and Goud, V V and Loganandhan, N and Gujja, B and Rupela, Om (2014) Assessment of different methods of rice (Oryza sativa. L) cultivation affecting growth parameters, soil chemical, biological, and microbiological properties, water saving, and grain yield in rice–rice system. Paddy and Water Environment, 12. pp. 79-87. ISSN 1611-2504

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Abstract

Field experiments were conducted at DRR farm located at ICRISAT, Patancheru, in sandy clay loam soils during four seasons, Kharif 2008, Rabi 2008–2009, Kharif 2009 and Rabi 2009–2010, to investigate growth parameters, water-saving potential, root characteristics, chemical, biological, and microbial properties of rhizosphere soil, and grain yield of rice (Oryza sativa L.) by comparing the plants grown with system of rice intensification (SRI) methods, with organic or organic + inorganic fertilization, against current recommended best management practices (BMP). All the growth parameters including plant height, effective tillers (10–45 %), panicle length, dry matter, root dry weight (24–57 %), and root volume (10–66 %) were found to be significantly higher with in SRI-organic + inorganic over BMP. With SRI-organic fertilization, growth parameters showed inconsistent results; however, root dry weight (3–77 %) and root volume (31–162 %) were found significantly superior compared to BMP. Grain yield was found significantly higher in SRI-organic + inorganic (12–23 and 4–35 % in the Kharif and Rabi seasons, respectively), while with SRI-organic management, yield was found higher (4–34 %) only in the Rabi seasons compared to BMP. An average of 31 and 37 % of irrigation water were saved during Kharif and Rabi seasons, respectively, with both SRI methods of rice cultivation compared to BMP. Further, total nitrogen, organic carbon%, soil dehydrogenase, microbial biomass carbon, total bacteria, fungi, and actinomycetes were found higher in the two SRI plots in comparison to BMP. It is concluded that SRI practices create favorable conditions for beneficial soil microbes to prosper, save irrigation water, and increase grain yield.

Item Type: Article
Divisions: RP-Grain Legumes
CRP: CGIAR Research Program on Grain Legumes
Uncontrolled Keywords: Methods of rice cultivation, System of rice intensification (SRI), Microbial characteristics, Root characteristics, Irrigation water
Subjects: Others > Soil Science
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 16 Mar 2013 05:17
Last Modified: 19 Aug 2016 04:30
URI: http://oar.icrisat.org/id/eprint/6663
Official URL: http://dx.doi.org/10.1007/s10333-013-0362-6
Projects: UNSPECIFIED
Funders: World Wide Fund
Acknowledgement: We thank the World Wide Fund (WWF) for Nature for providing financial support for this research. We also thank all the staff of the biocontrol unit of ICRISAT including M/s. P.V.S. Prasad, P. Manohar, B. Nagappa, D. Barath, A. Jabbar, K. Deepthi, and S. Rohini for their significant inputs in the laboratory and
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