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Competitive effects of some tropical secondary successional weed species on the growth of Maize (Zea mays)
Confluence Journal of Environmental Studies (2017)
Abstract
The competitive effects of some tropical secondary successional weed species; Croton lobatus L., Emilia sonchifolia L. and Spigelia anthelmia L. on the growth of Maize (Zea mays) were investigated for a seventy days. Yellow (su) Maize were grown in monoculture (10 crop plants) and also in mixtures with the weed species in the ratio of (10 crop plants: 15 individual weed species) on plots of 4 m2 each in the Biological garden at University of Lagos; 6.5155° N, 3.3878° E. Four treatments representing different combinations were prepared each in six replicates (Table 1). The plants were watered with 2 L of tap water twice a week and harvested at growth stages of 3 leaf (V3), 6 leaf (V6), 9 leaf (V9), 13 leaf (V13) and tasseling (VT) based on the phonological stages of maize development. On harvesting, the leaf area and fresh weights were measure and some growth parameters such as Leaf area ratio, Relative growth rate, Net assimilation rate and weed growth rate were estimated for comparison.  Data were analyzed using analysis of variance. Further comparison of the treatments was carried out using LSD and Pearson’s correlation coefficient at 0.05 probability level. Results showed that the competition from the weeds; C. lobatus, E. sonchifolia and S. anthelmia caused significant reduction in the growth of the maize; S. anthelmia causing the highest reduction. The results showed that these weed species when present with the maize will reduce their growth rate, thus there should be an effective weed control during cultivation of Maize
Keywords
  • Maize (Zea mays L.),
  • monoculture,
  • mixtures,
  • competition,
  • yield,
  • weed control
Disciplines
Publication Date
Winter December 2, 2017
Citation Information
"Competitive effects of some tropical secondary successional weed species on the growth of Maize (Zea mays)" Confluence Journal of Environmental Studies Vol. 11 Iss. 2 (2017) p. 103 - 110 ISSN: 1597-5827
Available at: http://works.bepress.com/cjes_kogistateuniversity/64/
Creative Commons license
Creative Commons License
This work is licensed under a Creative Commons CC_BY-SA International License.