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|Title: ||The influence of nutrient application on the pests and natural enemies of pests of okra Abelmoschus esculentus (L.)(Moench.)|
|Authors: ||Baidoo, P. K.|
Mochiah, M. B.
|Issue Date: ||2011|
|Publisher: ||Journal of Applied Biosciences|
|Citation: ||Journal of Applied Biosciences 41: 2765 - 2771|
|Abstract: ||Objective: Increased nutrient application to the soil enhances plant growth and thus improves the yield of
crops. However, improved vegetative growth can make the plant more attractive to pests attack and
destruction. The study was therefore conducted to assess the effects of artificial fertilizer and poultry
manure on the pests and the natural enemies of the pests of okra.
Methodology and Results: The experiment was conducted in a randomized complete block design with
three treatments which were replicated three times. The effects of NPK and poultry manure were studied
on parameters such as insect pests’ numbers and their natural enemies. The numbers of infested leaves,
numbers of holes, leaf area, percentage defoliation, fruit damage, plant height and number of fruits were
determined. Pest numbers on the various treatments did not differ significantly (P> 0.05). Numbers of
infested leaves and holes and percentage defoliation did not differ significantly (P> 0.05). Mean leaf area
was however significantly larger on NPK-treated plots than on poultry-manured plots.
Conclusions and application of findings: Management of insect pest by the average resource-poor farmer
using chemical insecticides may not be a viable option. Application of poultry manure as soil amendments
may be a viable alternative to artificial fertilizer. Its use does not only enhance the growth of the plant but
also improve yield. The use of animal manure in Africa will be particularly beneficial to the small-scale
farmers many of whom cannot afford artificial fertilizers. The continuous and indiscriminate use of chemical
fertilizers has some negative effects on the environment. These include run-off and leaching into water
bodies thereby polluting them. Thus the use of organic manure will help address some of these
|Description: ||An article published by Journal of Applied Biosciences, 2011; 41: 2765 - 2771|
|Appears in Collections:||College of Science|
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