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Mar 30, 2024Keywords:
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Main Article Content
Effect of Detasseling on Grain Yield Stability of Maize Grown Under Increased Plant Density
Abstract
Competition for resources increases abiotic stress for maize planted at high planting density, while tassel removal has the potential to increase grain yield and minimize the negative effects of pressure occasioned by high plant population. A split-split plot experiment arranged in a randomized block design (r=3) was established at the Institute of Agricultural Research and Training, Moor Plantation Ibadan in the years 2017 and 2018, respectively. Treatment included four maize varieties (V) (DMRLSR-W, SUWAN-1, OBASUPER-1 and OBASUPER-2), two plant densities (D) 80,000 pl ha-1 and 53,333 pl ha-1 and detasselling. Data were collected on the number of rows and kernels per cob, 100-grain weights, grain moisture content (GMC %), and total grain yield (GY). From the results, tassel removal has no significant effect on the total grain yield (P<0.05). Grain moisture content was higher in grains obtained from detasselled plots (27.91%) than grains from non-detasselled plots (27.19%), Tasselling and Density interactions on GMC were also significant. A significant interaction was observed between the maize varieties and tasselling, such that the GY of the maize varieties in the detasselled plots except SUWAN-1 were significantly higher than maize grain yield from the non-detasselled maize plots except SUWAN-1. Detasseling did not impact positively on the GY in this study. However, genotypic differences were observed among the varieties of detasselling and non-detasselling treatments. Non-beneficial role of detasselling on GY was not seen in this experiment due to the availability of resources and that 80,000 plants ha-1 may not be high enough to induce competition among the plants for resource utilization.
