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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
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    Abstract - Issue May 2018, 39 (3)                                     Back


nstantaneous and historical temperature effects on a-pinene

A five years study on the selection of rice based cropping systems

in Goa, for west coast region of India

 

B.L. Manjunath1, V. Paramesh2*, G.R. Mahajan2, K.V. Reddy2, B. Das2 and N.P. Singh3

1NRM Section, ICAR-Indian Institute of Horticultural Research, Bengaluru-560 089, India

2NRM Section, ICAR- Central Coastal Agricultural Research Institute, Goa-403 402, India

3NRM Section, ICAR- National Institute of Abiotic Stress Management, Baramati-413 115, India

*Corresponding Author E-mail: parameshagron@gmail.com

 

 

 

Key words

Cropping system

Economic analysis

Energy ratio

Nutrient balance

Residue recycling

 

 

Publication Data

Paper received : 18.02.2017

Revised received : 03.06.2017

Re-revised received : 04.08.2017 Accepted : 26.09.2017

 

Abstract

Aim: Field experiments were conducted for five years during 2010-11 to 2014-15 to select productive and profitable rice based cropping systems for West coast region of India at ICAR-Central Coastal Agricultural Research Institute, Goa. 

 

Methodology: Cropping systems viz. rice-cowpea, rice-groundnut, rice-brinjal and rice-sweet corn were tested for their production potential, economic feasibility, nutrient balance and energy budgeting along with rice-fallow as control.

 

Results: The data indicated significantly higher rice equivalent yield (23.5 t ha-1) with rice-sweet corn followed by rice-brinjal (14.1 t ha-1) as compared to a predominant rice-fallow system of the region (5.50 t ha-1). Higher potential usable residue was also found higher with rice- sweet corn system (36.9 t ha-1). Results of the energy ratio (46.5), specific energy (0.65 MJ kg-1) and energy productivity (1.52 kg MJ-1) indicate that the rice-sweet corn is most energy efficient system among all the evaluated systems. Although, rice-brinjal system depicted higher onfarm employment potential (217 man days ha-1 year-1) with an increase of 317 % over monocropping, while the economic analysis indicted higher net return (`. 95350) and benefit cost ratio (2.57) in rice-sweet corn system. The nutrient balance were positive for N and P, while in all the cropping systems the K balance was found negative.           

 

Interpretation: The rice-sweet corn system was found to be the most productive, economical and energy efficient cropping system for the West coast region of India under protective irrigated conditions.

 

 

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