Effect of winter maize (Zea mays)-based intercropping systems on maize yield, associated weeds and economic efficiency in central Uttar Pradesh
A field experiment was conducted during winter seasons of 2003-04 and 2004-05 at Kanpur to study the effect of winter maize (Zea mays L.)-based intercropping systems on maize yield, associated weeds and economics under irrigated condition of central Uttar Pradesh. Thirteen maize-based cropping systems, viz. maize sole, potato (Solanum tuberosum L.) sole, mustard [Brassica juncea (L.) Czernj. & Cosson] sole, toria (Brassica campestris var. toria) sole, pea (Pisum sativum L. sensulato) sole, linseed (Linum usitatissimum L.) sole, wheat (Triticum aestivum L. emend. Fiori and Paol.) sole, maize + potato (1:1), maize + mustard (1:1), maize + toria (1:2), maize + pea (1:2), maize + linseed (1:2) and maize + toria (1:2), were tested in randomized block design with three replications. Maize + potato system recorded higher yield attributes and grain yield of maize followed by maize + pea than sole stand of maize. Other intercropping systems reduced the values of yield attributes and grain yield of maize. All the intercropping systems recorded higher maize-equivalent yield, more productivity (kg/ha/day) and significant reduction in weed population and weed dry-biomass than sole cropping of maize. Among the intercropping systems, maize + potato showed significantly higher maize-equivalent yield (13.8 tonnes/ha), productivity (98.51 kg/ha/day), land-equivalent ratio (2.13), monetary returns (Rs 75,069/ha), monetary-equivalent ratio (1.66), monetaryefficiency (Rs 536.2/ha/day), relative value total (2.76) and relative net returns (1.91) followed by maize + pea, however significantly lower values of these were associated with maize + toria. Maize + pea recorded the lowest weed population, weed dry-biomass and highest weed-control efficiency.
All articles published may be reproduced or utilized in any form or by any means whether specified Comunicata Scientiae, author(s), volume, pages and year. The authors are responsible for all the statements and concepts contained in the article.