Combined use of butachlor and cowpea for weed management in okra production

Authors

  • Christian C. Obiazi Department of Agronomy, Delta State University, Abraka, Nigeria
  • Gideon O. Okogu Department of Agronomy, Delta State University, Abraka, Nigeria
  • Onyemechi Ugbo Department of Agricultural Extension, University of Delta, Agbor, Nigeria
  • Sunday I Alama Department of Soil and Land Resource Management, Faculty of Agriculture, Dennis Osadebay University, Anwai, Asaba, Delta State, Nigeria
  • Chukwuma S. Uwabor Department of Soil and Land Resource Management, Faculty of Agriculture, Dennis Osadebay University, Anwai, Asaba, Delta State, Nigeria
  • John F. Akpomedaye Department of Vocational Education (Agricultural Science Unit), Faculty of Education, Delta State University, Abraka, Nigeria
  • Felicity O. Otite Department of Soil and Land Resource Management, Faculty of Agriculture, Dennis Osadebay University, Anwai, Asaba, Delta State, Nigeria

Keywords:

cowpea grain yield, okra pod yield, weed biomass, weed control rating

Abstract

For large-scale crop cultivation manual weeding is unviable. The use of herbicides shrinks manual labor requirements; but herbicide’s weed control efficacy is not at its peak for a prolonged period, especially for a long-duration crop. The study's objective was to test the supplementary attributes of cowpeas in prolonging the suppression of weeds in okra plots. Treatments involved in the study were: Butachlor at 1.0 kg a.i./ha + cowpea at 40,000 plants/ha, Butachlor at 2.0 kg a.i./ha + cowpea at 40,000 plants/ha), Hoe-weeding at 3, 6, and 9 weeks after sowing, and Weedy Control. Weed Control Rating, weed biomass, cowpea grain yield, okra pods/plant, and pod yields were measured. Combined use of Butachlor at 2.0 kg a. i./ha plus cowpea maintained a similar weed control rating with Hoe weeded control up till 8 weeks after sowing and became less effective at 10 weeks growth stage, it also resulted in significantly greater average grain yields (344.4 kg/ha) than when the lower rate of herbicide concentration of 1.0 kg a.i./ha was used (181.3 kg/ha). HighButa had a greater mean okra pod yield (3.1 t/ha) than LowButa (2.1 t/ha), but it was less than the yield of the hoe-weeded control (4.2 t/ha), the weedy plot had pod yield of 1.1 t/ha. Uninterrupted weed interference in okra plots resulted in a 73.8 % average loss in okra pod yield. Combination of cowpea with butachlor prolonged weed suppression in okra, such methodology is therefore recommended.

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Published

2024-04-18

How to Cite

[1]
C. C. Obiazi, “Combined use of butachlor and cowpea for weed management in okra production”, Int. J. Phytol. Res., vol. 4, no. 2, pp. 08–12, Apr. 2024.

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