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Growth, Development and yield of Kenaf as Affected by Planting Dates and N Fertilization

Open Journal of Applied Sciences 2024年第3期14卷 707-720页

作者： Julius Yirzagla Peter Quandahor Iddrisu Yahaya Olivia Aguriboba Akanbelum Listowell Aditwin Akologo John Bokaligidi Lambon Abdul-Wahab M. Imoro Kwadwo Gyasi Santo CSIR-SARI Nyankpala Ghana St Vincent College of Education Yendi Ghana Gbewaah College of Education Pusiga-Bawku Ghana CSIR-Head Office Accra Ghana C.K. Tedam University of Technology and Applied Sciences Navrongo Ghana University of Energy and Natural Resources Sunyani Ghana

Kenaf (Hibiscus cannabinus L) consists of various beneficial components like stalks, seeds, leaves, fibers, oils, proteins, allelopathic chemicals, and fiber strands, among other things. Despite the numerous uses of the crop, there is little or no information on optimum agronomic practices such as planting date and N fertilization of the crop in the Upper East Region (UER) of Ghana where the crop is widely cultivated by smallholder farmers. Field experiments were therefore carried out in 2020 and repeated during the 2021 cropping season in the study area. The objective of the study was to determine appropriate planting date and N fertilization for increased kenaf productivity. In each year, the treatments consisted of 3 × 5 factorial combinations of three planting dates (1st July, 7th July and 14th July) and five levels of N (0, 20, 40, 60 and 80 kg/ha) replicated three times. The design of the experiment was a split-plot with the N fertilizer as the main plot and the planting date assigned to sub plot. The results showed that, planting kenaf in early (1st) July or N fertilization at the rate of 60 kg/ha increased plant density, stem height, stem diameter, dry bast and core yields in both cropping seasons.

关键词： Growth Fibres Bast yield core yield

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