Population Responses of Plant-parasitic Nematodes in Selected Crop Rotations Over Five Seasons in Organic Cotton Production
Year: 2015
Type: article
Abstract: Crops with resistance or tolerance to the root-knot nematode, Meloidogyne incognita race 4, were evaluated \nfor management of plant-parasitic nematodes in organic cotton production for five consecutive seasons. During \nthe first two summers, Sesamum indicum L. (sesame), Tagetes erecta L. (marigold), Crotalaria juncea L. (sunn \nhemp), Avena sativa L. (oat), and Gossypium hirsutum L. (cotton) were grown. During the winter, oat followed \nsesame, marigold, sunn hemp, and one of the cotton regimes, while the summer oat was followed by Crambe \nabyssinica Hochst. ex R.E. Fries (Abyssinian crambe) during spring. The other cotton regime was left fallow \nduring the winter. During the third summer, cotton was grown in all the rotations. The results showed that \nrotations such as sesame/oat, marigold/oat, and sunn hemp/oat can be beneficial in reducing M. incognita race 4 \npopulation densities. Pratylenchus zeae population densities increased following sunn hemp in summer. Cotton \nis not a good host for this lesion nematode species. Cotton in the sesame/oat rotation gave a higher yield than in \nthe other rotations. Development of effective crop rotation systems becomes difficult when crop choices increase \nand fields are infested with multiple plant-parasitic nematode species
Authors: Elizabeth R. van Biljon, A. H. McDonald, Hendrika Fourie
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2099139446