Oke HA, Osunleti SO and Olabode AR

• access_time12 July, 2025

  subjectCategory: Agricultural Sciences

• Assessing the critical period of weed interference will provide information on when crop is most sensitive to weed interference, and this will guide in developing weeding programme for the crop. Therefore, field trials were conducted in Ibadan, Oyo State and Ikenne, Ogun State to determine the critical period of weed interference in Mango ginger. In both locations, twelve weed interference periods were laid out in a randomized complete block design and replicated three times. Data collected on growth and yield of mango ginger, as well as weed dry matter were subjected to analysis of variance and treatment means were separated using Duncan's Multiple Rage Test at P ≤0.05. Results revealed that growth and yield of mango ginger increased with length of weed free period and decreased with increase in weed infestation period. Conversely, weed dry matter production decreased with weed free period and increased with length of weed infestation. The highest yield gainof 51.9%and weed removal of 40.4% was observed between 4 and 8 weeks after planting (WAP). Weed infestation the first 12 weeks caused 84.7% reduction in mango ginger yield. Therefore, for optimum yield in mango ginger, weeding regime should be built around the first 12 weeks.
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