{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,17]],"date-time":"2026-01-17T21:49:53Z","timestamp":1768686593662,"version":"3.49.0"},"reference-count":18,"publisher":"Cambridge University Press (CUP)","issue":"1","license":[{"start":{"date-parts":[[2008,10,3]],"date-time":"2008-10-03T00:00:00Z","timestamp":1222992000000},"content-version":"unspecified","delay-in-days":7946,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Ex. Agric."],"published-print":{"date-parts":[[1987,1]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:p>The effect of variations in the relative sowing time and density of component crops in a maize\/cowpea intercrop were examined in two experiments. In the first experiment, maize and cowpea were sown together, and either 10 or 21 days before or after each other. Maize yield was reduced when sown at the same time or after cowpea; intercrop cowpea yields were less than sole cowpea yields at all sowings. In the second experiment, maize densities of 35, 50 and 70 \u00d7 10<jats:sup>3<\/jats:sup>plants ha<jats:sup>\u22121<\/jats:sup>were combined with cowpea densities of 70, 100 and 140 \u00d7 10<jats:sup>3<\/jats:sup>plants ha<jats:sup>\u22121<\/jats:sup>. Increasing the density of either crop in the mixture resulted in increases in total yield. Maize reduced cowpea yields more than the effect of cowpea on maize yields. In terms of LER and total seed protein yield, there was no advantage of either staggered sowings over simultaneous sowing or of the various intercrop density combinations, except between the lowest and the highest densities of either maize or cowpea. The LERs appeared to follow the trends in cowpea yields and total seed protein yields the trends in maize yields.<\/jats:p>","DOI":"10.1017\/s0014479700001113","type":"journal-article","created":{"date-parts":[[2008,10,3]],"date-time":"2008-10-03T13:55:39Z","timestamp":1223042139000},"page":"41-52","source":"Crossref","is-referenced-by-count":31,"title":["Relative Sowing Time and Density of Component Crops in a Maize\/Cowpea Intercrop System"],"prefix":"10.1017","volume":"23","author":[{"given":"Francis","family":"Ofori","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"W. R.","family":"Stern","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2008,10,3]]},"reference":[{"key":"S0014479700001113_ref013","doi-asserted-by":"publisher","DOI":"10.1017\/S0014479700012230"},{"key":"S0014479700001113_ref008","volume-title":"Population Biology of Plants","author":"Harper","year":"1977"},{"key":"S0014479700001113_ref014","first-page":"500","article-title":"Interaction between maize and cowpea sown simultaneously and at intervals in a forest zone of Nigeria","volume":"52","author":"Remison","year":"1982","journal-title":"Indian Journal of Agricultural Science"},{"key":"S0014479700001113_ref007","doi-asserted-by":"publisher","DOI":"10.1016\/0378-4290(82)90005-3"},{"key":"S0014479700001113_ref017","doi-asserted-by":"publisher","DOI":"10.1017\/S001447970002278X"},{"key":"S0014479700001113_ref005","doi-asserted-by":"publisher","DOI":"10.1017\/S0014479700007791"},{"key":"S0014479700001113_ref002","first-page":"1149","volume-title":"Methods of Soil Analysis","author":"Bremner","year":"1965"},{"key":"S0014479700001113_ref012","doi-asserted-by":"publisher","DOI":"10.1017\/S0021859600025910"},{"key":"S0014479700001113_ref003","first-page":"127","article-title":"Voluntary register of grain legume cultivars in Australia - cowpea cv. Banjo","volume":"48","author":"Cook","year":"1982","journal-title":"Journal of the Australian Institute of Agricultural Science"},{"key":"S0014479700001113_ref015","doi-asserted-by":"crossref","first-page":"143","DOI":"10.18174\/njas.v31i2.16954","article-title":"An alternative approach to the analysis of mixed cropping experiments. 2. Marketable yield","volume":"31","author":"Spitters","year":"1983","journal-title":"Netherlands Journal of Agricultural Science"},{"key":"S0014479700001113_ref009","doi-asserted-by":"publisher","DOI":"10.1017\/S0014479700008334"},{"key":"S0014479700001113_ref004","doi-asserted-by":"publisher","DOI":"10.1017\/S0021859600054988"},{"key":"S0014479700001113_ref010","doi-asserted-by":"publisher","DOI":"10.1017\/S0014479700010978"},{"key":"S0014479700001113_ref001","unstructured":"Ahmed S. , Gunasena H. P. M. & Yang Y. H. (1979). Proceedings: Final INPUTS Review Meeting, 20\u201324 August 1979, East-West Centre, Honolulu, Hawaii."},{"key":"S0014479700001113_ref018","first-page":"73","article-title":"Intercropping \u2013 its importance and needs. Part 2. Agronomy and research approaches","volume":"32","author":"Willey","year":"1979","journal-title":"Field Crop Abstracts"},{"key":"S0014479700001113_ref006","first-page":"12","article-title":"Multiple cropping potentials of beans and maize","volume":"113","author":"Francis","year":"1978","journal-title":"Horticultural Science"},{"key":"S0014479700001113_ref011","doi-asserted-by":"publisher","DOI":"10.1016\/0378-4290(86)90062-6"},{"key":"S0014479700001113_ref016","doi-asserted-by":"publisher","DOI":"10.1016\/0378-4290(85)90055-3"}],"container-title":["Experimental Agriculture"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0014479700001113","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,9,17]],"date-time":"2021-09-17T19:35:55Z","timestamp":1631907355000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0014479700001113\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1987,1]]},"references-count":18,"aliases":["10.1017\/s0014479700003392"],"journal-issue":{"issue":"1","published-print":{"date-parts":[[1987,1]]}},"alternative-id":["S0014479700001113"],"URL":"https:\/\/doi.org\/10.1017\/s0014479700001113","relation":{},"ISSN":["0014-4797","1469-4441"],"issn-type":[{"value":"0014-4797","type":"print"},{"value":"1469-4441","type":"electronic"}],"subject":[],"published":{"date-parts":[[1987,1]]}}}