<abstract xmlns="http://www.w3.org/1999/xhtml">

Plant parasitic nematodes are major pests on upland cotton worldwide and in the United States. The reniform nematode, <italic>Rotylenchulus reniformis</italic> and the southern root-knot nematode <italic>Meloidogyne incognita</italic> are some of the most damaging nematodes on cotton in the United States. Current management strategies focus on reducing nematode populations with nematicides. The objective of this research was to integrate additional fertilizer and nematicide combinations into current practices to establish economical nematode management strategies while promoting cotton yield and profit. Microplot and field trials were run to evaluate fertilizer and nematicide combinations applied at the pinhead square (PHS) and first bloom (FB) plant growth stages to reduce nematode population density and promote plant growth and yield. Cost efficiency was evaluated based on profit from lint yields and chemical input costs. Data combined from 2019 and 2020 suggested a nematicide seed treatment (ST) ST + (NH4)2SO4 + Vydate® C-LV + Max-In® Sulfur was the most effective in increasing seed cotton yields in the <italic>R. reniformis</italic> microplot trials. In <italic>R. reniformis</italic> field trials, a nematicide ST + (NH4)2SO4 + Vydate® C-LV at PHS supported the largest lint yield and profit per hectare at $1176. In <italic>M. incognita</italic> field trials, a nematicide ST + 28-0-0-5 + Vydate® C-LV + Max-In® Sulfur at PHS and FB supported the largest lint yields and profit per hectare at $784. These results suggest that combinations utilizing fertilizers and nematicides applied together across the season in addition to current fertility management show potential to promote yield and profit in <italic>R. reniformis</italic> and <italic>M. incognita</italic> infested cotton fields.
</abstract>

Plant parasitic nematodes are major pests on upland cotton worldwide and in the United States. The reniform nematode, Rotylenchulus reniformis and the southern root-knot nematode Meloidogyne incognita are some of the most damaging nematodes on cotton in the United States. Current management strategies focus on reducing nematode populations with nematicides. The objective of this research was to integrate additional fertilizer and nematicide combinations into current practices to establish economical nematode management strategies while promoting cotton yield and profit. Microplot and field trials were run to evaluate fertilizer and nematicide combinations applied at the pinhead square (PHS) and first bloom (FB) plant growth stages to reduce nematode population density and promote plant growth and yield. Cost efficiency was evaluated based on profit from lint yields and chemical input costs. Data combined from 2019 and 2020 suggested a nematicide seed treatment (ST) ST + (NH4)2SO4 + Vydate® C-LV + Max-In® Sulfur was the most effective in increasing seed cotton yields in the R. reniformis microplot trials. In R. reniformis field trials, a nematicide ST + (NH4)2SO4 + Vydate® C-LV at PHS supported the largest lint yield and profit per hectare at $1176. In M. incognita field trials, a nematicide ST + 28-0-0-5 + Vydate® C-LV + Max-In® Sulfur at PHS and FB supported the largest lint yields and profit per hectare at $784. These results suggest that combinations utilizing fertilizers and nematicides applied together across the season in addition to current fertility management show potential to promote yield and profit in R. reniformis and M. incognita infested cotton fields.

Additional fertilizer and nematicide combinations on upland cotton to manage <italic>Rotylenchulus reniformis</italic> and <italic>Meloidogyne incognita</italic> in Alabama

Journal of Nematology

This work is licensed under the Creative Commons Attribution 4.0 International License.

Additional fertilizer and nematicide combinations on upland cotton to manage  and  in Alabama

Plant parasitic nematodes are major pests on upland cotton worldwide and in the United States. The reniform nematode, Rotylenchulus reniformis and the southern...

Additional fertilizer and nematicide combinations on upland cotton to manage Rotylenchulus reniformis and Meloidogyne incognita in Alabama

Published Online: Feb 18, 2022

Page range: 1 - 15

Received: Aug 19, 2021

DOI: https://doi.org/10.21307/jofnem-2022-003

Keywords
Cotton, Reniform nematode, Root-knot nematode,

© 2022 Kara L. Gordon et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Additional fertilizer and nematicide combinations on upland cotton to manage Rotylenchulus reniformis and Meloidogyne incognita in Alabama

Published Online: Feb 18, 2022

Page range: 1 - 15

Received: Aug 19, 2021

DOI: https://doi.org/10.21307/jofnem-2022-003

KeywordsCotton, Reniform nematode, Root-knot nematode,

© 2022 Kara L. Gordon et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Cotton, Reniform nematode, Root-knot nematode,