Precision Control of Nematodes In Arizona Cropping Systems

This paper summarizes work completed over the past three years evaluating the effectiveness of precision placement of the nematicide Telone II for control of nematodes in Arizona cropping systems.  A high degree of correlation between nematode population distributions and soil texture has allowed for the implementation of precision placement of Telone II in areas where nematode distribution and thus damage to cotton is spatially variable.  This work was completed on grower-cooperator fields across Arizona in a wide variety of environments.  Techniques involved in this work included directed spatial sampling for nematodes, Veris and EM38 surveys, and yield mapping analysis, all used in an effort to develop accurate prescription application maps that could then be used to guide the variable placement of Telone II for effective control of root-knot nematode.  Results have demonstrated effective use of these technologies to enhance both economic and environmental efficiencies with respect to nematode control.  Validation of these results continues during the 2010 season and into the 2011 season on both cotton and corn.