Sorghum in Rotation with Soybean for the Management of Cyst and Root-Knot Nematodes


  • R. Rodriguez-Kabana
  • D. B. Weaver
  • D. G. Robertson
  • P. S. King
  • E. L. Carden


Aldicarb, Cropping Systems, Cultural Practices, Cyst Nematode, Glycine max, Heterodera Glycines, Meloidogyne arenaria, Nematicides, Nematode Control, Pest Management, Root-Knot Nematode, Rotations, Sorghum, Sorghum bicolor, Soybean


The value of 'Pioneer 8222' sorghum (Sorghum bicolor) in rotation with soybean for the management of nematode problems was studied in a field infested with root-knot (Meloidogyne arenaria) and cyst (Heterodera glycines, race 4) nematodes. In 1988 cultivars Braxton, Centennial, Gordon, Kirby, Leflore, Ransom, and Stonewall were planted in plots in which sorghum was grown the preceeding 2 years and also were planted in plots that had been in continuous soybean production. Each cultivar in the two cropping systems either was not treated with nematicide or was treated with an at-plant application of aldicarb (41.4 g a.i./100 m of row in a 20-cm-wide band). Except for Braxton, aldicarb did not increase yield of any cultivar in the sorghum-soybean plots; however, yield of 'Kirby' and 'Leflore' were increased in the monoculture system. Yields of all cultivars were higher in the sorghum-soybean plots than in those in monoculture. Yield increases in response to the sorghum-soybean system comp