Relationship of Plant-Nematodes and Edaphic Factors in Colombian Grain Sorghum Production
Authors
L. E. Trevathan
J. A. Cuarezma-Teran
L. M. Gourley
Keywords:
Lesion, Spiral, Stunt Nematodes, Sorghum Bicolor
Abstract
The plant-parasitic nematodes most commonly found associated with sorghum in the Cauca Valley, Colombia, were: Pratylenchus zeae, Tylenchorhynchus martini, and Helicotylenchus dihystera. Pratylenchus zeae occurred in 100% of the samples and averaged 744 nematodes/250 cm of soil. Significant correlations were found between certain soil properties and nematode populations, including pH, phosphorus, sodium, and calcium. Cation exchange capacity, sand, silt, clay, organic matter, and other elements assayed were not correlated with plant-parasitic nematode populations.
