ISSN: 0041-3216 (Online), 0041-3216 (Print)
Volume 56 Number 2
N utilization and economics of some intercropped systems in tropical countries
Field studies to compare utilization and economics of some locally important intercropped and corresponding monocropped systems were conducted in four countries using the following crop combinations: maize/cowpea (Nigeria and Hawaii), maize/soya bean (Sri Lanka), maize/mung bean (Sri Lanka), and sunflower/mung bean (Philippines). N levels used were 0, 50 and 100 per cent of the locally recommended rates for the non-legume crop. At all locations, the non-legume crop showed a positive response to under both cropping systems. Yield of the intercropped legume was, however, depressed at higher rates, due possibly to shading effect of the non-legume crop. Total economic yield and gross economic returns increased with intercropping. The net protein utilization value of the cereal-legume intercropped systems also appeared to be higher, so pointing to the importance of such systems for the subsistence level farmer of developing countries.