Abstract
Abstract Insecticides were evaluated at the Plant Science Research Farm, Mississippi State, MS, in a RCB design with 4 replications. Plot size was 4 rows wide (38 inch spacing) by 50 ft long with 4 unsprayed buffer rows between plots. Insecticides were applied on 12 Jul with a high clearance spray tractor equipped with two Spraying Systems TX4 hollow cone nozzles spaced at 19 inches and calibrated for 5 gpa at a pressure of 40 psi and a speed of 3.5 mph. Carrier of the insecticides was water, with an initial pH of 8.0. Samples were taken from 10 leaves per plot at each of 3 levels on the plant: upper (4th true leaf), mid (mainstem leaf located a third down the plant), and lower (leaf on the bottom of the plant). Aphids were counted on one side of the leaf midvein (1/2 leaf) only.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
