Full TGIF Record # 240541
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Publication Type:
Author(s):Switzer, C. M.
Author Affiliation:Dept. of Botany, Ontario Agricultural College, Guelph, Ontario
Title:Crabgrass control with preemergence herbicides
Meeting Info.:St. Louis, Missouri: December 11-13, 1961
Source:Eighteenth Annual Research Report: North Central Weed Control Conference. 1961, p. 92.
# of Pages:1
Publishing Information:[Lincoln, Nebraska]: [North Central Weed Science Society]
Abstract/Contents:"Herbicides were applied April 27, 28 and May 1, 1961 to 100 sq. ft. plots in a randomized design replicated 4 times on the Ontario Agricultural College campus. Liquid materials were sprayed (100 gal/A) from a knapsack sprayer and granulars were disturbed by means of a fertilizer spreader. Rain (0.78 in.) fell during the period from April 29 to May 3. First crabgrass emergence in the control plots was noted on May 15. Notes on turf injury and crabgrass control were taken June 26, July 21 and August 23. Excellent control of crabgrass with no injury to other grasses was given by -2,4-dichlorophenyl O-methyl isopropylphosphoramidothioate (Zytron) (both liquid and granular formulations) at 8, 16 and 8 lb/A, di methyl 2,3,5,6-tetrachloroterephtalate (Dacthal) (liq. and gran.) at 5, 10 and 15 lb/A, diphenylacetonitrile (Diphenatrile) at 20, 30 and 40 lb/A, and N,N-di-n-propyl-2,6-dinitro-4-methylaniline (Dipropalin) at 4,6 and 8 lb/A. Calcium propyl arsonate was good at 60 lb/A but not satisfactory at 20 or 40 lb/A. Clover was strongly inhibited by this herbicide. Pas (36.5% metallic arsenic) gave good control at 3 pounds of formulation per 100 sq. ft. as did Chip Cal (50% tricalcium arsenate) at 2 lb. of formulation per 100 sq. ft. Poor results were obtained when lower rates (1 and 1½ lb/100 sq.ft.) were used. N,N-di-n-propyl-2,6-dinitro-4- trifluoromethylaniline (Trifluralin) caused marked burning of all plants in the plots at 4, 6, and 8 lb/A. Therefore, it was not satisfactory even though it gave 100% control of crabgrass."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Switzer, C. M. 1961. Crabgrass control with preemergence herbicides. Proc. North Cent. Weed Sci. Soc. p. 92.
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