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Please use this identifier to cite or link to this item:
http://krishi.icar.gov.in/jspui/handle/123456789/67091
Title: | Effects of winter crop and supplemental irrigation on crop yield, water use efficiency and profitability in rainfed rice based cropping system of eastern India |
Other Titles: | Crop diversification in rainfed rice fallow ; double cropping in rainfed areas ; Water use efficiency and profitability in rainfed areas |
Authors: | Not Available Gouranga Kar a, H.N. Verma, Ravender Singh |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | Water Technology Centre for Eastern Region (ICAR), Bhubaneswar, Orissa 751023, India |
Published/ Complete Date: | 2006-01-01 |
Project Code: | Not Available |
Keywords: | Rainfed rice ecosystem; Dry season crop; Runoff recycling; Eastern India; Double crops ; water requirements of second crops in rainfed rice fallow |
Publisher: | Not Available |
Citation: | Not Available |
Series/Report no.: | Not Available; |
Abstract/Description: | Soil moisture availability is the main limiting factor for growing second crops in rainfed rice fallows of eastern India. Only rainfed rice is grown with traditional practices during the rainy season (June–October) with large areas (13 m ha 1) remaining fallow during the subsequent dry season (November–March) inspite of annual rainfall of the order 1000–2000 mm. In this study an attempt was made to improve productivity of rainfed rice during rainy season and to grow second crops in rice fallow during dry (winter) season with supplemental irrigation from harvested rainwater. Rice was grown as first crop with improved as well as traditional farmers’ management practices to compare the productivity between these two treatments. Study revealed that 87.1– 95.6% higher yield of rice was obtained with improved management over farmers’ practices. Five crops viz., maize, groundnut, sunflower, wheat and potato were grown in rice fallow during dry (winter) season with two, three and four supplemental irrigations and improved management. Sufficient amount of excess rainwater (runoff) was available (381 mm at 75% probability level) to store and recycle for supplementary irrigation to second crops grown after rice. Study revealed that supplemental irrigation had significant effect (P < 0.001) on grain yield of dry season crops and with two irrigation mean yields of 1845, 785, 905, 1420, 8050 kg ha 1 were obtained with maize (grain), groundnut, sunflower, wheat and potato (tuber), respectively.With four irrigations 214, 89,78, 81, 54% yield was enhanced over two irrigations in respective five crops. Water use efficiency (WUE) of 13.8, 3.35, 3.39, 5.85 and 28.7 kg ha 1 was obtained in maize, groundnut, sunflower, wheat, potato (tuber), respectively with four irrigations. The different plant growth parameters like maximum above ground biomass, leaf area index and root length were also recorded with different levels of supplemental irrigation. The study amply revealed that there was scope to improve productivity of rainfed rice during rainy season and to grow another profitable crops during winter/dry season in rice fallow with supplemental irrigation from harvested rainwater of rainy season. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Article |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Agricultural Water Management |
Journal Type: | International |
NAAS Rating: | 10.02 |
Impact Factor: | 4.516 |
Volume No.: | 79 |
Page Number: | 280-292 |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/67091 |
Appears in Collections: | CS-CRIJAF-Publication |
Files in This Item:
File | Description | Size | Format | |
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Effects of winter crop and supplemental irrigation.pdf | 247.28 kB | Adobe PDF | View/Open |
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