Soil fertility as influenced by alternate sequential cropping systems to rice-rice (Oryza sativa L.) in Tunga Bhadra project area

Nagoli, S A and Basavanneppa, M A and Sawargaonkar, G L and Biradar, D P and Biradar, S A and Navyashree, M R (2016) Soil fertility as influenced by alternate sequential cropping systems to rice-rice (Oryza sativa L.) in Tunga Bhadra project area. Ecology, Environment and Conservation Paper, 22 (Apr). pp. 445-448. ISSN 0971–765X

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Abstract

A field experiment was carried out in farmers field near Agriculture Research Station, Siruguppa in Karnataka during kharif and rabi of 2014-15 to Study influence of alternate sequential copping systems to rice-rice (Oryza sativa L.) system on fertility status of soil in Tunga Bhadra Project (TBP) Area. The experimental site was medium deep black with soil pH (8.01), EC (0.54 dS m-1), available nitrogen (240.80 kg ha-1), P2O5 (22.90 kg ha-1) and K2O (347.49 kg ha-1). The experiment comprised of seven sequential cropping systems viz., T1: Rice-maize, T2: Rice-sorghum, T3: Rice-chickpea, T4: Rice-sesame, T5: Maize-chickpea, T6: Cotton-sesame and T7: Rice-rice. These treatments were laid out in completely randomized block design with three replications. The study revealed that significantly higher rice equivalent yield (REY) was recorded in cotton-sesame cropping system (13117 kg ha-1) compared to rest of the cropping systems. Significantly higher system productivity was recorded with maize-chickpea (35.94 REY kg ha-1 day-1) cropping system and it was significantly superior over existing rice-rice (26.89 REY kg ha-1day-1) cropping systems. Significantly higher available nitrogen (210.21 kg ha-1) and P2O5 (34.22 kgha-1) in soil was noticed with ricechickpea cropping system whereas significantly higher available K2O was obtained after the harvest of rice-rice cropping system (330.10 kg ha-1). The cotton-sesame and maize-chickpea crop sequences are more productive and sustainable as they improve the productivity and fertility status of soil when compared to other cropping sequences and can be a better option for the farmers of the Tunga Bhadra Project area, Karnataka.

Item Type:	Article
Divisions:	Research Program : Asia
CRP:	CGIAR Research Program on Water, Land and Ecosystems (WLE)
Uncontrolled Keywords:	Alternate sequential cropping system, Rice equivalent yield, Soil fertility, System productivity, Sequential cropping systems
Subjects:	Others > Soil Fertility Others > Rice Others > Soil Science
Depositing User:	Mr Ramesh K
Date Deposited:	17 Aug 2016 04:23
Last Modified:	09 Nov 2016 09:28
URI:	http://oar.icrisat.org/id/eprint/9621
Official URL:	http://www.envirobiotechjournals.com/article_abstr...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	The authors wish to acknowledge the UAS, Raichur and ARS, Siruguppa for providing good facilities. We also appreciate greatly the financial support by the International Crop Research Institute for Semi Arid Tropics (ICRISAT), Patencheru, for carrying out this study.
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