Impact assessment of neem compost and Trichoderma harzianum solution in the control of root knot nematode disease on cowpea
Year: 2016
Type: article
Abstract: Efficacy of neem leaf based compost and Trichoderma harzianum solution were assessed on root knot nematode pest of two cowpea varieties at the screen house of the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria during 2012 planting season. The two cowpea varieties which have been confirmed to be susceptible to root knot nematode, IT96D-610 and IT84S-2246-4 were the test crops. The experimental pots (10 kg soil) were inoculated with 5,000 root knot nematode eggs. Treatments were neem compost and T. harzianum solution with application rates of 2 ton/ha and 1 × 10−7 spores respectively. The pots that were not treated served as the control. Each treatment was replicated 4 times while the statistical design was a complete randomized design. Data collected included growth and yield of cowpea, as well as the nematode numbers in the soil and root. The results indicated that neem compost and T. harzianum solution significantly increased growth and yield of IT96D-610 and IT84S-2246-4 cowpea varieties grown in the root knot nematode inoculated soil, while root knot nematode population in soil and root were significantly reduced. Gall index was also significantly lower in the neem compost and T. harzianum treated cowpea compared to the untreated control.
Source: Cogent Food & Agriculture
Authors: T.I. Olabiyi, O.J. Ojo, B.O. Adewuyi
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2466296386