Abstract
Chemical nematicides have potential for risks and pollution to the environment and human health. Hence, this promoted the needs to use alternatives from certain medical plants. This research was designated to evaluate certain moringa plant part residues with their aqueous extracts and seed oil suspension for controlling root-knot nematode, M. incognita on field dry pea (Pisum sativum L.) under screen house conditions. On the basis of mean of total percentages of nematode reduction for each parameter, it was found that dry root powder registered the highest mean of total percentages of reduction (81.6%) followed by those of mashed fresh leaves (80.8%), seeds powder (79.5%) and dry leaves (76.4%). When using extracts of moringa residues, it was noticed that aqueous extract of seeds powder achieved the highest percentage nematode reduction (81.1%) followed by extract of dry leaves powder (80.8%), extract of dry root powder (80.5%). The least reduction (74.2%) was caused by seed oil suspension Number of galls was reduced while number of nodules was increased according to the tested materials. Consequently, the different treatments improved plant growth and yield parameters.
Highlights
As cited by Ramadan and Soliman (2020), root-knot nematode, Meloidogyne incognita is considered one of the major plant parasites causing damage to many agricultural crops
Egyptian Scientific Society of Moringa (ESSM) in National Research Centre, Egypt was the source of the tested moringa (Moringa oleifera Lam.) materials including leaves, seeds and roots dry powders, mashed fresh leaves and seed oil
Moringa residues either as mash, powder, extract or oil suspension inhibited nematode galling and reproduction and increased plant growth and yield criteria of field pea infected by root-knot nematode, M. incognita
Summary
As cited by Ramadan and Soliman (2020), root-knot nematode, Meloidogyne incognita is considered one of the major plant parasites causing damage to many agricultural crops. The using of chemical nematicides has potential for risks and pollution to the environment and human health On this basis, the search for alternatives to chemical nematicides from certain medicinal plants was promoted. The search for alternatives to chemical nematicides from certain medicinal plants was promoted Among these plants, moringa (Moringa oleifera) was used to control root-knot nematode (Lockett et al, 2000; Anwar and Rashid, 2007). Sowley et al(2014) tested moringa leaf powder for controlling Meloidogyne spp. in sweet pepper (Capsicum annuum L.). They found that the concentration of 80 g/L of moringa leaf powder reduced gall index and nematode population in soil and promoted plant growth criteria
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