Bahiagrass-Cotton Rotations and the Management of Meloidogyne incognita and Hoplolaimus galeatus


  • R. Rodriguez-Kabana
  • D. G. Robertson
  • J. Bannon


Aldicarb, Bahiagrass, Cotton, Crop Rotation, Cropping Systems, Gossypium hirsutum, Hoplolaimus galeatus, Lance Nematode, Management, Meloidogyne incognita, Nematode Control, Paratrichodorus minor, Paspalum notatum, Root-Knot Nematode, Stubby Root Nematode


A 3-year experiment was conducted to determine the value of 'Pensacola' bahiagrass (Paspalum notatum) as a rotation crop for the management of nematode problems in cotton (Gossypium hirsutum). The experiment was in a field infested with Meloidogyne incognita, Hoplolaimus galeatus, and Paratrichodorus minor, as the principal nematodes, with small populations of Helicotylenchus dihystera, Pratylenchus spp., and Tylenchorhynchus claytoni. Yields of seven cotton cultivars (Deltapine 20, Deltapine 50, Coker 320, Coker 315, Stoneville 453, DES 119, and S 1001) following 2 years of bahiagrass were higher than in cotton monoculture. The magnitude of the yield response to the rotation was cultivar dependent. At-plant application of the nematicide aldicarb (17 g a.i./100 m row) improved cotton yields in both the monoculture and the rotation system. Yield response to the nematicide was more pronounced in the monoculture than in the rotation system; in both systems the response was cultivar depe