sensitive to 2,4, 5-T, MCPA, 2,4-D, and silvex in the early seedling, boot, 

 and early heading stages. Applications at these stages should be avoided unless 

 heavy ■weed infestations seriously threaten the crop. If applications are 

 necessary during sensitive stages of gro'wth use minimum rate required to 

 control weeds. If application is necessary during early stages, use 2, 4, 5-T, 

 MCPA, or silvex instead of 2,4-D since these herbicides are less injurious 

 to rice than 2,4-D. 



Comments and precautions. - -Cotton, soybeans, and other crops sensitive 

 to 2,4-D, 2, 4, 5-T, MCPA, and silvex may be seriously injuredby vapors 

 or spray drift from these herbicides. These four herbicides rank as follows 

 according to their toxicity to cotton, with the least toxic listed first: 

 2, 4, 5-T, silvex, MCPA, and 2,4-D. In cotton-producing areas, use only 

 amine salt to control weeds in rice. Avoid application when wind direction is 

 toward cotton or other susceptible crops. In certain States it is not permis- 

 sible to use esters of the phenoxy compounds. State regulations should be 

 complied with in all cases. 



SUGAR BEETS 



(1) Preplanting . - -For control of wild oats and some other annual grasses 

 and volunteer cereals: IPC at 3 to 6 pounds in 10 to 20 gallons of water per 

 acre applied to surface of soil and thoroughly disked into soil surface 2 to 4 

 weeks before planting, IPC usually is not satisfactory for control of foxtails 

 or pigeon grass. In some irrigated regions, endothal at 2-1/2 to 5-1/2 pounds 

 in 10 to 20 gallons of water per acre may be used to control some annual 

 grasses (not wild oats or volunteer cereals) and some broadleaved weeds. 

 Endothal is applied in bands and worked into the surface 1-1/2 inches of soil 

 ahead of the planter units. 



(2) Pre -emergence . --For control of most annual grasses (except wild oats 

 and volunteer cereals) and some broadleaved weeds: TCA at 5 to 7 pounds in 

 10 to 20 gallons of water per acre applied before emergence of beets. In some 

 high-rainfall areas, endothal at 5-1/ 2 pounds in 10 to 20 gallons of water per 

 acre will control some annual grasses (not w^ild oats or volunteer cereals) 

 and some broadleaved weeds. 



(3) Post -emergence . --For control of many broadleaved weeds on acid or 

 neutral soils in the humid regions: Sodium chloride at 200 to 300 pounds in 

 100 to 200 gallons of w^ater per acre applied ■when beets have 2 to 4 true leaves. 

 It will not control lambsquarters or purslane. Dalapon at 3 to 6 pounds in 10 

 to 20 gallons of water per acre will control seedling grasses including wild 

 oats. Dalapon should be applied when the beets have 1 to 4 leaves. 



Comments and precautions . --Chemical weed control practices in sugar 

 beets vary w^idely depending on weeds present and soil and climate factors. 

 Rates given are based on broadcast application. When band application is 

 nnade, appropriate rate adjustments must be made. Endothal may cause 

 injury to sugar beets on sandy soils or under extreme drought condi- 

 tions. 



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