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ARS Home » Southeast Area » Tifton, Georgia » Crop Genetics and Breeding Research » Research » Publications at this Location » Publication #380260
Research Project: Genetics and Integrated Management of Plant Parasitic Nematodes in Cotton and Peanut

Location: Crop Genetics and Breeding Research

Title: Castor bean as an option for Meloidogyne incognita management in cotton

Author
item GALBIERI, RAFAEL - Instituto Mato-Grossense Do Algodao (IMAMT)
item KOBAYASTI, LEIMI - Universidade Federal De Mato Grosso
item ALBUQUERQUE, MARIA - Universidade Federal De Mato Grosso
item DE SA, ROGERIO - Instituto Mato-Grossense Do Algodao (IMAMT)
item DUTRA, SERGIO - Instituto Mato-Grossense Do Algodao (IMAMT)
item BOLDT, ALBERTO - Instituto Mato-Grossense Do Algodao (IMAMT)
item Timper, Patricia - Patty

Submitted to: International Journal of Pest Management
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/24/2021
Publication Date: 7/23/2021
Citation: Galbieri, R., Kobayasti, L., Albuquerque, M., De Sa, R., Dutra, S., Boldt, A., Timper, P. 2021. Castor bean as an option for Meloidogyne incognita management in cotton. International Journal of Pest Management. https://doi.org/10.1080/09670874.2021.1953633.
DOI: https://doi.org/10.1080/09670874.2021.1953633

Interpretive Summary: Root-knot nematodes (RKN) are microscopic roundworms that feed on plant roots. The southern root-knot nematode (Meloidogyne incognita) is considered one of the most important plant pathogens of cotton (Gossypium hirsutum). Diversifying the control of this nematode is the key to success in its management. In the production system in infested areas, it is essential to use non-host crops for a certain period of time to restrict the nematode's feeding and reproduction. For greater adoption of the technique, it is important that the crop be profitable, a non-host for root-knot nematodes, and also economical, thus providing grain or fiber production in the area. Therfore, this research aimed to evaluate management of this nematode in cotton using a rotation with castor bean (Ricinus communis), a potential cash crop. The reproduction of the southern RKN on castor bean in the greenhouse and effect of its planting on the nematode populations on cotton in the field were tested. The effect of castor bean cake on the nematode population and its direct effect on cotton yield were also evaluated. The results showed that the castor bean is a non-host to the southern RKN. In addition, its grain production was close to 1.2 t/ha when used in infested areas, and it improved nematode management and productivity of the cotton planted in the next season. Castor bean cake reduced RKN populations. However, it cannot be applied with doses above 100 kg/ha in the cotton planting furrow due to the phytotoxic effect on the crop. The recommended rate for cotton in the planting furrow was 60 kg/ha, promoting a decrease in the nematode population at 80 DAP and the gall index as well as an increase in crop yield in areas infested with the southern RKN.

Technical Abstract: Meloidogyne incognita is considered one of the biggest phytosanitary problems for cotton (Gossypium hirsutum L.). Diversifying the control of this nematode is the key to success in its management. In the production system in infested areas, it is essential to use non-host crops for a certain period of time to restrict the nematode's feeding and reproduction. For greater adoption of the technique, it is important that the crop be profitable, a non-host for root-knot nematodes, and also economical, thus providing grain or fiber production in the area. Therfore, this research aimed to evaluate management of this nematode in cotton using a rotation with castor bean (Ricinus communis L.), a potential cash crop. The reproduction of M. incognita on castor bean in the greenhouse and effect of its planting on the nematode populations on cotton in the field were tested. The effect of castor bean cake on the nematode population and its direct effect on cotton yield were also evaluated. The results showed that the castor bean is a non-host to M. incognita. In addition, its grain production was close to 1.2 t/ha when used in infested areas, and it improved nematode management and productivity of the cotton planted in the next season. Castor bean cake reduced M. incognita populations. However, it cannot be applied with doses above 100 kg/ha in the cotton planting furrow due to the phytotoxic effect on the crop. The recommended rate for cotton in the planting furrow was 60 kg/ha, promoting a decrease in the nematode population at 80 DAP and the gall index as well as an increase in crop yield in areas infested with M. incognita.