Abstract: Background and Objective: Low natural light intensity is a major limiting factor for maintaining crop productivity under intercropping, indoor and reduced irradiance system. The main goal of this study was to credentials of Chilli genotypes suitable for reduced solar radiation for achieving higher yield. Materials and Methods: The trial was conducted using RCB design including two factors viz. Chilli genotypes/varieties viz. Co-640, Co-630, Co-639, Co-637, Co-446-1 and BARI Morich 2 and were grown in three shading environments viz. control (no shading), 25% and 50% shading. The 25% and 50% shading environments were created installing the black mosquito net maintaining by single and double layer respectively above the growing media. Results: Results suggested that decreased solar radiation has drastically impacted on a drop of fruits and biomass yield, photosynthetic responses for specific genotypes/varieties excluding Co-640 and Co-639. The genotype Co-640 produced the longest fruit (7.50 cm), maximum weight of 5 fruits (23.5 g) at 50% shading condition that directly contributed in producing highest fruit yield (352.9 g/plant). The genotype Co-639 also showed the better response in producing fruit length (6.25 cm), fruit yield (260.4 g/plant) as well as physiological parameter under 50% shading condition. Shading effect caused reducing the rate of PAR absorption, photosynthesis and total CO2 conductance irrespective of all genotypes, excluding Co-639. Conclusion: Therefore, from this study it can be concluded that Chilli genotypes Co-640 and Co-639 were found suitable for cultivation at 50% shading (reduced solar radiation) condition associated with the increasing yield contributing traits, yield and physiological parameters. PubDate: 30 April, 2022
Abstract: Background and Objective: Maize is one of the oldest cultivated crops and, globally, it is the third most important cereal after wheat and rice in the area and total production. Compared to all other cereals, maize has the highest average yield per unit area. The objective of the research was to evaluate maize varietal response to different nitrogen fertilizer rates. Materials and Methods: The treatment consisted of 2 factors, namely, 6 varieties of maize and 4 levels of nitrogen application rates. These were arranged in 6×4 factorial combinations and laid out using Randomized Complete Block Design (RCBD) with 3 replications. Data collected were subjected to combined analysis for variation in factorial experiments in RCBD using Genstat statistical package edition 18. Means were separated using Duncan’s multiple range test at a 5% probability level. Results: The study revealed that varieties such as IWD-C3-SYN-F2 and OBATAMPA produced the highest grain yield and growth parameters (agronomic traits) relative to other varieties. Maximum grain yield and biomass production also occurred at nitrogen application rates of 90 and 120 kg N ha–1. Conclusion: Varieties such as IWD-C3-SYN-F2 and OBATAMPA and N rate of 90 kg N ha–1 are therefore, recommended to be used for maize production by the resource-poor farmers in the Guinea Savanna Agro-Ecology of Ghana. PubDate: 30 April, 2022
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