Collard-cowpea intercrop response to nitrogen fertilization, redroot pigweed density, and collard harvest frequency

HortScience

Volumn 32, Issue 5, 1997, Pages 850-853

  Itulya, Francis M ^a,c   Mwaja, Vasey N ^b,d   Masiunas, John B ^b  

^a EGERTON UNIVERSITY   (Kenya)

^b UNIVERSITY OF ILLINOIS AT URBANA CHAMPAIGN   (United States)

^c Faculty of Agriculture

^d Bayer EA Ltd   (Kenya)

Author keywords

[No Author keywords available]

Indexed keywords

AMARANTHUS; AMARANTHUS RETROFLEXUS; BRASSICA; BRASSICA OLERACEA VAR. ACEPHALA; BRASSICA OLERACEA VAR. CAPITATA; VIGNA UNGUICULATA;

EID: 0030794139     PISSN: 00185345     EISSN: None     Source Type: Journal    
DOI: 10.21273/hortsci.32.5.850     Document Type: Article

References (28)

1. Ayeni, A.O., W.B. Duke, and I.O. Akobundu. 1984. Weed interference in maize, cowpea, maize/ cowpea intercrop in a subhumid tropical environment. I. Influence of cropping system. Weed Res. 24:269-279.
2. Blade, S.F., D.E. Mather, and B.B. Singh. 1992. Evaluation of yield stability of cowpea under sole and intercrop management in Nigeria. Euphytica 61:193-201.
3. Chahira, P.W. and F.M. Itulya. 1994. Effects of plant spacing and leaf removal frequency on leaf numbers and fresh leaf weight of kale. E. Afr. Agr. For. J. 59:293-303.
4. Clark, K.M. and R.L. Myers. 1994. Intercrop performance of pearl millet, amaranth, cowpea, soybean, and guar in response to planting pattern and nitrogen fertilization. Agron. J. 86:1097-1102.
5. Coolman, R.M. and G.D. Hoyt. 1993. Increasing sustainability by intercropping. HortTechnology 3:309-311
6. Fukai, S. 1993. Intercropping - Bases of productivity. Field Crops Res. 34:239-242.
7. Fukai, S. and B.R. Trenbath. 1993. Processes determining intercrop productivity and yields of component crops. Field Crops Res. 34:247-263.
8. Gethi, M. and B.M. Khaemba. 1991. Damage by pod-sucking bugs on cowpea when intercropped with maize. Trop. Pest Mgt. 37:236-239.
9. Horwith, B. 1985. A role of intercropping in modern agriculture. Bioscience 35:286-291.
10. Imbamba, S.K. 1973. Leaf protein content of some vegetables. East Afr. Agr. For. J. 38:246-251.
11. Itulya, F.M. 1995. The influence of intercropping and nitrogen fertility on yield of kale and beans. E. Afr. Agr. For. J. 60:167-174.
12. McFadden, M.E. 1991. Fertility and weed stress effects on performance of maize/soybean intercrop. Agron. J. 83:717-721.
13. Midmore, D.J. 1993. Agronomic modification of resource use and intercrop productivity. Field Crops Res. 34:357-363.
14. Morris, R.A., A.N. Villegas, A. Polthanee, and H.S. Centeno. 1990. Water use by monocropped and intercropped cowpea and sorghum grown after rice. Agron. J. 82:664-668.
15. Ofori, F. and W.R. Stern. 1987. The combined effects of nitrogen fertilizer and density of the legume component on production efficiency in maize/cowpea intercrop system. Field Crops Res. 16:43-52.
16. Olasantan, P.O. 1991. Response of tomato and okra to nitrogen fertilizer in sole cropping and intercropping with cowpea. J. Hort. Sci. 66:191-199.
17. Olasantan, F.O., E.O. Lucas, and H.C. Ezumah. 1994. Effects of intercropping and fertilizer applications on weed control and performance of cassava and maize. Field Crops Res. 39:63-69
18. Pearce, S.C. and R.N. Edmondson. 1982. Historical data as a guide to selecting systems for intercropping two species. J. Expt. Agr. 18:353-362.
19. Perez, F.G.M. and J.B. Masiunas. 1990. Eastern black nightshade (Solananum ptycanthum) interference in processing tomato (Lycopersicon esculentum). Weed Sci. 38:385-388.
20. Perrin, R.M. 1977. Pest management in multiple cropping systems. Agro-Ecosystem 3:93-118.
21. Rachie, K.O. and L.M. Roberts. 1974. Grain legumes of the lowland tropics. Adv. Agron. 26:1-32.
22. Rao, M.R. and R.W. Willey. 1980. Evaluation of yield stability in intercropping: Studies on sorghum/pigeonpea. J. Expt. Agr. 16:105-116.
23. Reid, D. 1983. The combined use of fertilizer nitrogen and white clover as nitrogen sources for herbage growth. J. Agr. Sci. 100:613-623.
24. Santalla, M., A.M. de Ron, and P.A. Casquero. 1995. Nutritional and culinary quality of bush bean populations intercropped with maize. Euphytica 84:57-65.
25. Senaratne, R., N.D.L. Liyanage, and R.J. Soper. 1995. Nitrogen fixation of and N transfer from cowpea, mungbean, and groundnut when intercropped with maize. Fert. Res. 40:41-48.
26. Thompson, T.L. and T.A. Doerge. 1995. Nitrogen and water rates for subsurface trickle irrigated collard, mustard, and spinach. HortScience 30:1382-1387.
27. Vandermeer, J.H. 1989. The ecology of intercropping. Cambridge Univ. Press., Cambridge, U.K.
28. Waterer, J.G., J.K. Vessey, and E.H. Stobbe. 1994. Yield and symbiotic nitrogen fixation in a pea-mustard intercrop as influenced by N fertilizer addition. Soil Biol. and Biochem. 26:447-453.