College of Agriculture & Natural Resources

URI for this communityhttps://rps.wku.edu.et/handle/123456789/45803

College of Agriculture & Natural Resource

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    RESPONSE OF MAIZE (Zea mays L.) HYBRIDS TO PLANT DENSITY IN NONO DISTRICT, WEST SHOWA ZONE, ETHIOPIA
    (wolkite university, 2023-03-01) ABERA WORKINEH SHEMETE
    To increase maize yield in a positive environment, it's important to suit the planting density and cultivar. Field research were carried out in 2021 under rain-fed conditions in Nono district of West Shewa zone in two locations (Silk Amba and Jiru Gemechu), to decide the effects of plant density levels on maize hybrids reproduction, growth, yield and yield components. The study included four maize hybrids (BH540, BH546, Damote and Limu) and three planting densities (44,444, 53333 and 67,667 plants ha−1 ) in a randomized complete block design in a factorial arrangement with 3 replications. Results revealed that location (Loc) had significantly (P ≤ 0.05) influenced most measured phenological, growth, yield and yield components of maize. Across environments hybrids significantly (P_< 0.05) affected all measured parameters. Planting density had additionally affected a few growth, yield and yield components of maize drastically . Across environments, the lowest grain yield (7.88 ha-1 ) was observed from BH540 (oldest hybrid). No significant yield increase observed beyond 53,333 plats ha-1 , and recommended to be the superior planting density for the maize hybrids included on this study in the district. Compared to the district's existing suggested planting density of 44,444 plants ha-1 , planting density of 53,333 plants ha-1 produced greater than nine quintals ha-1 yield advantage. At both locations, BH540 and BH546 both had comparable outcomes. On the other hand, Pioneer hybrids, Damote and Limu resulted the highest yield of 12 and 12.32 t ha-1 respectively at Silk Amba, whereas, at Jiru Gemechu, the highest yield was recorded from Limu (10.64 t ha-1 ) hybrid and was also corresponding to BH546 (9.31 t ha-1 ) and Damote (9.99 t ha-1 ) suggested differential response of hybrids in different environments as a result of Loc x H interaction. This study provided further evidence that the growth and yield of maize are significantly influenced via environment, genotype, plant population, and interactions. It also made the point that optimizing planting density to match the high-quality performing variety should be taken into account as new varieties are delivered and advocated particularly environments.