Effect of Alternative Cropping Systems on Yield and Advantage in Direct Seeded Upland Rice Areas in Indian Sub-tropics

Autor:	Ashis Kumar Chakraborty, R. K. Sarkar, B. Bala
Rok vydání:	1998
Předmět:	Oryza sativa biology Field experiment Intercropping Plant Science Upland rice biology.organism_classification Agronomy Poaceae Rainfed agriculture Cropping system Agronomy and Crop Science Entisol Mathematics
Zdroj:	Journal of Agronomy and Crop Science. 180:1-6
ISSN:	1439-037X 0931-2250
DOI:	10.1111/j.1439-037x.1998.tb00361.x
Popis:	An experiment was conducted during rainy season (April-August) of 1994 and 1995 to assess the performance of rice, maize, sesame, greengram and blackgram grown in sole and intercropping system on Gangetic alluvial upland (Entisol) in West Bengal, India. All intercropping systems except sesame + rice had higher total productivity in terms of rice equivalent yield and net returns than all the sole crops. However, maximum advantage was obtained from paired row planted maize blackgram system followed by maize + sesame, maize + blackgram and paired row planted rice + blackgram. Paired row planted maize + blackgram increased land use efficiency (42 %), rice equivalent yield (2955 kg ha -1 ), monetary return (Rs. 7294 ha -1 ), income equivalent ratio (1.22), monetary advantage (Rs. 3701 ha-') compared with other cropping systems, which proved to be the most efficient system. The same treatment also indicated a modest competitive ratio (4.65:0.21) and gave a good value for the product of crowding coefficient (8.28).
Databáze:	OpenAIRE
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