Effects Of Duration Of Cyperusesculentus (Yellow Nutsedge) Competition On Vigna Unguiculata (Cowpea) Growth And Yield.
ABSTRACT
A pot experiment was conducted in the 2004 cropping season at Michael Okpara University of Agriculture, Umudike experimental farm to study and measure the effect of the duration of Cyperus esculentus (Yellow nutsedge) on Vigna unguiculata (vegetable Cowpea) growth and yield. The experiment was laid out as completely randomized design (CRD). There were 10 treatments and replicated four times. The cultivar of vegetable Cowpea was IT81D-128-14 seeded at density of 200,000 plants/ha and C. esculentus was planted at 150 plants/rn2. Cowpea was kept weed free of competition with Cyperus for 1,2,3,4,5 weeks after emergence (WAE). Data was collected on growth, development and yield components of both crop and weed. There was a significant increase in the height of both Cowpea and the C.esculentus over time.(P<0.05). Leaf area development in Cowpea follows a imilàr trend as the growth in height. Cowpea dry weight was significantly different over time. (P<0.05) Cowpea yield follows a similar trend as the growth in height. There was significant increase in the density of C.esculentus over time. At 4 WAE, Cowpea yield reduce to 46% due to competition with C.esculentus. The critical period for cowpea growth and development was within 3-5 weeks of competition. Cyperus esculentus was more competitive and reduced Cowpea yields when the duration of competition exceeds 3 weeks after emergence.
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UKO, I (2021). Effects Of Duration Of Cyperusesculentus (Yellow Nutsedge) Competition On Vigna Unguiculata (Cowpea) Growth And Yield.. Mouau.afribary.org: Retrieved Dec 26, 2024, from https://repository.mouau.edu.ng/work/view/effects-of-duration-of-cyperusesculentus-yellow-nutsedge-competition-on-vigna-unguiculata-cowpea-growth-and-yield-7-2
IBEABUCHI., UKO. "Effects Of Duration Of Cyperusesculentus (Yellow Nutsedge) Competition On Vigna Unguiculata (Cowpea) Growth And Yield." Mouau.afribary.org. Mouau.afribary.org, 21 Jun. 2021, https://repository.mouau.edu.ng/work/view/effects-of-duration-of-cyperusesculentus-yellow-nutsedge-competition-on-vigna-unguiculata-cowpea-growth-and-yield-7-2. Accessed 26 Dec. 2024.
IBEABUCHI., UKO. "Effects Of Duration Of Cyperusesculentus (Yellow Nutsedge) Competition On Vigna Unguiculata (Cowpea) Growth And Yield.". Mouau.afribary.org, Mouau.afribary.org, 21 Jun. 2021. Web. 26 Dec. 2024. < https://repository.mouau.edu.ng/work/view/effects-of-duration-of-cyperusesculentus-yellow-nutsedge-competition-on-vigna-unguiculata-cowpea-growth-and-yield-7-2 >.
IBEABUCHI., UKO. "Effects Of Duration Of Cyperusesculentus (Yellow Nutsedge) Competition On Vigna Unguiculata (Cowpea) Growth And Yield." Mouau.afribary.org (2021). Accessed 26 Dec. 2024. https://repository.mouau.edu.ng/work/view/effects-of-duration-of-cyperusesculentus-yellow-nutsedge-competition-on-vigna-unguiculata-cowpea-growth-and-yield-7-2