Effects of phosphorus rates, sowing date and variety on growth and yield of hyacinth bean (Lablab purpureus (L.) Sweet) in Ringim, Jigawa State, Nigeria
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Abstract
Field experiment was conducted during the 2019, 2020 and 2021 cropping seasons at the Jigawa State Horticultural Farm, Ringim in the semi-arid zone of Nigeria. The experiment was conducted to determine the effect of phosphorus, sowing dates and variety on the growth and yield characters of lablab. The treatments consisted of four levels of phosphorous (0, 20, 40 and 60 kg/ha), two local varieties of lablab (Dan Inusa and Dan Farankachi) and three sowing dates (1st, 15th and 29th of July). The experiment was laid out in a Randomized Complete Block Design (RCBD) replicated three times. Growth and yield characters were measured and correlation analysis was done. Results indicated that 60 Kg P/ha produced highest seed yield. Sowing on 29th of July had highest yield and Variety Dan Inusa out yielded the other variety. The results also showed that most of the growth and yield components had significant positive correlation with yield. However, crop growth rate was observed to have significant negative correlation with the crop yield. It could be recommended that most of the growth and yield parameters were good yield contributing characters.
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