Meloidogyne incognita

Gordon, Kara L, Schrimsher, Drew W & Lawrence, Kathy S, 2022, Additional fertilizer and nematicide combinations on upland cotton to manage Rotylenchulus reniformis and Meloidogyne incognita in Alabama, Journal of Nematology 54 (1), pp. 1-15 : 8-9

Meloidogyne incognita field evaluation

Plant stand was not affected by the additional fertilizer or Vydate ® C-LV combinations ( Table 6 ). The additional fertilizer and nematicide combinations did not significantly increase root fresh weight in samples taken at PHS + FB. Meloidogyne incognita eggs per gram of root were not significantly reduced in samples taken at PHS + FB. A nematicide ST + (NH 4) 2 SO 4 at PHS and FB had the lowest M. incognita eggs per gram of root, represented by the combined sample. The combination of a nematicide ST + 28-0- 0-5 + Vydate® C- LV + Max-In® at PHS and FB had a significantly higher lint yield when compared to application of (NH4)2SO4 at PHS or 28-0-0-5 at PHS (P ≤ 0.10). Lint yield was increased by 433 kg /ha and 447 kg /ha or 35% and 38% with the combination of a nematicide ST + 28-0-0-5 + Vydate® C- LV + Max-In® at PHS and FB when compared to the lowest yielding treatments, (NH4)2SO4 at PHS and 28-0-0-5 at PHS.

Mean profits for fertilizer applications of (NH4)2SO4 and 28-0-0-5 at PHS with no nematicides averaged $548.53 ( Table 7 ). A nematicide ST with an additional fertilizer application at PHS increased mean profit by $54/ha from an additional fertilizer application alone. A nematicide ST with an additional application of fertilizer at PHS and FB increased profit by $103/ ha from an additional fertilizer application alone. Fertilizer combinations with Vydate® C-LV applied at PHS had an increased profit of $93/ha from an additional fertilizer application alone. Fertilizer and nematicide combinations that included Vydate® C-LV at PHS and FB had an increased profit of $131/ha. All combinations were compared to the mean profit of treatments of an additional fertilizer with no nematicides to determine increased profit per hectare. The combination of a nematicide ST + 28-0-0-5 + Vydate® C-LV + Max-In® Sulfur at PHS and FB had the greatest overall mean profit of $784.00 which was significantly greater than the mean profit of treatments of (NH4)2SO4 or 28-0-0-5 at PHS.