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International Journal of Agricultural Research
  Year: 2012 | Volume: 7 | Issue: 1 | Page No.: 1-16
DOI: 10.3923/ijar.2012.1.16
 
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Growth and Development of Late Season Maize/soybean Intercropping in Response to Nitrogen and Crop Arrangement in the Forest Agro-ecology of South Southern Nigeria
U.L. Undie, D.F. Uwah and E.E. Attoe

Abstract:
Intensive production of maize with legumes during early rains in the High Rainforest region of South Southern Nigeria is limited by heavy rainfall. Production of late season maize/legumes by peasant farmers is gaining prominence though yields are low due to low soil fertility and improper crop arrangement. The objective of this research was to investigate the performance of late season maize/soybean intercropping in response to nitrogen fertilization and spatial arrangement of the intercrops. The trial was a split-plot design in randomized complete block with three replications. Treatments consisted of five nitrogen rates (0, 25, 50, 75 and 100 k ha-1), two sole crops and three maize/soybean intercrop arrangements (1:1, 2:2 and 1:2). Application of nitrogen positively influenced the two crops either as sole crops or as intercrops. Nitrogen increased plant height, number of leaves per plant and stem girth in both crops up to the 100 kg ha-1. Similarly, the number of branches in soybean and LAI and stover yield in maize also responded up to the 100 kg ha-1 used. Haulm yield in soybean responded optimally at 50 kg N ha-1. Intercropping maize with soybean reduced maize plant height, LAI, stem girth, number of leaves per plant and stover yield below their sole crop values. Similarly, soybean stem girth, number of branches per plant and haulm yields were reduced below their sole crop values when intercropped with maize. Soybean plant height increased above its sole crop height at all intercrop arrangements. There were no significant interaction effects between nitrogen and crop arrangements. Growing maize and soybean in alternating single rows decreased stover and haulm yields much more than growing the two crops in alternating double rows or in one row of maize alternating with two rows of soybean.
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How to cite this article:

U.L. Undie, D.F. Uwah and E.E. Attoe , 2012. Growth and Development of Late Season Maize/soybean Intercropping in Response to Nitrogen and Crop Arrangement in the Forest Agro-ecology of South Southern Nigeria. International Journal of Agricultural Research, 7: 1-16.

DOI: 10.3923/ijar.2012.1.16

URL: https://scialert.net/abstract/?doi=ijar.2012.1.16

 
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