Comparison of the performance foramsulfuron and foramsulfuron iodosulfuron alone and incombination with other herbicides for weed control in corn at Rochester, MN in 2003

摘要

The objective of this trial was toevaluate and compare the performance of foramsulfuron and foramsulfuron & iodosulfuron alone and incombination with other herbicides for weed control in corn in southeastern Minnesota. The research sitewas a Lawler loam soil containing 2.8% organic matter with a pH of 5.9 and soil test P and K levels of 57ppm and 186 ppm, respectively. The previous crop was soybean. The area was fertilized in the springwith 625 lb/A Pel-lime and 135, 23, 120, and 24 lb/A of nitrogen, phosphorus, potassium, and sulfur,respectively. Spring tillage consisted of two passes with a field cultivator. The corn hybrid, DKC47-10,was planted on April 29, 2003, at depth of 1.5 inches in 30-inch rows at a population of 32,000 seeds/A.A randomized complete block design with four replications was used. Postemergence (POST) treatmentswere applied with a tractor-mounted sprayer, delivering 20 gpa at 32 psi using TurboTee 11002 nozzles.Evaluations of the plots were taken on June 11, 16, and 26, 2003. Application dates, environmentalconditions, crop and weed stages are listed below.