The experiments reported here investigated the influence of high or low concentrations of nitrogen, phosphorus and potassium on the multiplication of X.campestris pv. malvacearum in cotton leaf tissue.

This 3 year study examined the relationships between catches of Heliothis adults in monitoring traps and the abundance of eggs on cotton crops. In the first year paired traps of the two Heliothis species set up on the edge ...

To determine the various factors affecting the loss of activity of insecticides on cotton over time. To detetemine the relative persistence of the range of insecticides used to control cotton pests, particularly Heliothis spp.