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Productivity and light interception in upland rice - legume intercropping systems

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Relation http://oar.icrisat.org/5257/
 
Title Productivity and light interception in upland rice - legume intercropping systems
 
Creator Ramakrishna, A
Ong, C K
 
Subject Agriculture-Farming, Production, Technology, Economics
 
Description The interact ion between upland rice and grain legumes (cowpea, groundnut , pigeon pea) in
intercropping was investigated on a Vertisol over two years. Generally, intercropping was advantageous
wi th a small reduction in rice yield and a substantial increase in yield of the legume. Pigeon
pea- r ice systems gave the highest intercropping advantage of 4 1 - 7 4 % in the first year. In the second
year, high intercropping advantages were recorded for cowpea and pigeon pea intercrops but
the indeterminate pigeon pea cv. Hy 3C reduced the expected rice yield by half. High irradiance
early in the rainy season increased the growth and yield of both rice and legumes compared to
the previous season, but intercrop rice was less competitive than Hy 3C. Canopy cover of rice was
slowest compared to cowpea and pigeon pea, largely because of the erect leaf arrangement of rice.
Intercropping invariably increased the amount of radiation intercepted due to faster canopy cover,
i.e., spatial complementarity. It was concluded that determinate legumes are more appropriate for
intercropping wi th upland rice.
 
Publisher Ritsumeikan University
 
Date 1994
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/5257/1/Productivity%20and%20light%20interception%20in%20upland%20rice%20-%20legume%20intercropping%20systems.pdf
Ramakrishna, A and Ong, C K (1994) Productivity and light interception in upland rice - legume intercropping systems. Tropical Agriculture(Trinidad), 71 (1). pp. 5-11. ISSN 0041-3216