Cowpea (Vigna Unguiculata (L.) Walp) Seed Quality And Yield As Influenced By Manipulating Sowing Dates For The Management Of Scab Induced By Elsinoe Phaseoli Jenkins, At Samaru, North-West Nigeria

📄 Project Abstract

Field experiment was conducted at the Institute for Agricultural Research (IAR) farm at Samaru, North-western Nigeria to investigate effects of sowing dates on incidence and severity of scab on yield and seed quality of cowpea. The varieties, SAMPEA 6, SAMPEA 8, SAMPEA 11, TVx 3236 and Ife brown were planted at three sowing dates, August 9, 19 and 29 in 2016. The design used was Randomized Complete Block Design (RCBD) with three replications. Parameters measured were disease incidence, disease severity and yield. Disease incidence and severity scores were taken at weekly intervals for ten weeks, and data was analysed using SAS statistical software. Cowpea sown on the first sowing date August 9, had the highest scab incidence, 48.89 %, 54.44 %, 36.67 %, 20 % and 13.33 % and severity, 25.11 %, 31.44 %, 18.33 %, 19.56 %, 18.11 % on leaves, stems, peduncles, flower cushions and pod, respectively while plants sown on the third sowing date, Aug 29, had no scab infection. The varieties, SAMPE...