Northern Corn Rootworm Control Study on No-Till Corn, 1977

This study was conducted at the Agway Farm Research Center, Fabius, New York, on field corn of the variety, Agway 151S in no-till sod planting (alfalfa and grass stubble). Randomized block design of three replications with two rows/plot (each row 17ft 4 inch = 1/1000 acre) and 30 inch row spacing was utilized. Two lb of Bladex 80W + 2.0 qt Lasso 4E + 2 pt Paraquat 2E + 0.5 pt Charger E applied on May 12‘77. Sixty lb of N/A also applied. In-furrow granular applications of insecticides were made on May 16‘77. Corn roots were dug on Aug 15‘77 to assess damage by the Northern Corn Rootworm larvae and roots were weighed. Ten corn roots were dug per plot, cleaned and rated for root damage using the Iowa root rating indexing system (scale 1-6) on August 16‘77.