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International Journal of Botany
  Year: 2006 | Volume: 2 | Issue: 1 | Page No.: 74-82
DOI: 10.3923/ijb.2006.74.82
Nitrogen Fertilizer and Weed (Euphorbia heterophylla Linn.) Effects on the growth Parameters of Macrotyloma geocarpa (Harms) Marechal and Beudet
A.A. Adelusi, O.A. Akamo and A.M. Makinde

Abstract:
Macrotyloma geocarpa (Harms) Marechal and Baudet (Kersting`s groundbean), a grain legume was subjected to different nitrogen levels and spurge weed (Euphorbia heterophylla Linn) competition to study the combined effects of these factors on its growth. Weed competition was achieved by growing Kersting`s groundbean with spurge weed, while fertilizer stress was imposed by planting Kersting`s groundbean without fertilizer treatments. There was another treatment, which was a combination of the two stresses. Fertilizer application of the crops was achieved by broadcasting NPK fertilizers at 0, 15 and 30 kg N ha-1 in the Kersting`s groundbean seedlings plots. Plants grown under nitrogen fertilizer did better in terms of above ground biomass, root length, shoot height, Leaf Weight Ratio (LWR) and seed yield. These increased at successive intervals. Leaf Area (LA), Leaf Area Ratio (LAR), Specific Leaf Area (SLA), Leaf Area Duration (LAD), Relative Growth Rate (RGR), Leaf Area Index (LAI), Net Assimilation Rate (NAR) did not show a regular pattern at successive harvest times during the investigation.
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How to cite this article:

A.A. Adelusi, O.A. Akamo and A.M. Makinde , 2006. Nitrogen Fertilizer and Weed (Euphorbia heterophylla Linn.) Effects on the growth Parameters of Macrotyloma geocarpa (Harms) Marechal and Beudet. International Journal of Botany, 2: 74-82.

DOI: 10.3923/ijb.2006.74.82

URL: https://scialert.net/abstract/?doi=ijb.2006.74.82

 
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