NEW HERBICIDE FOR BLUEBERRIES 



Dominic A. Marini 

 Southeast Regional Fruit 5 Vegetable Specialist 



Terbacil (Sinbar*) is now registered for the control o£ many- 

 annual and some perennial weeds in blueberries, and is included in 

 the 1978 Weed Control Guide for Small Fruits. Some of the weeds 

 mentioned on the label are crabgrass, fall panicum, foxtail, mus- 

 tard, yellow rocket, purslane, ragweed, lambs quarters, chickweed, 

 shepherdspurse, marestail, cinquefoil, hawkweed and quackgrass - 

 also known as doggrass or witchgrass. As with other new materials, 

 limited applications on a trial basis are suggested. 



Terbacil is sold as a wettable powder that is mixed with water 

 and applied as a spray. Continuous agitation is necessary to keep 

 it in suspension for uniform application. It may be applied as 

 a band along the row and under the bushes or as a complete broad- 

 cast application. 



Plants should be established for at least one year before 

 being treated with terbacil. It may be applied in the spring or 

 after harvest in the fall before weeds emerge, or to weeds in the 

 early seedling stage of growth. Apply at the rate of 2 pounds of 

 the 80 percent wettable powder per acre on light soils, and 3 to 

 4 pounds on heavy soils. Do not use on gravelly soils with less 

 than 1 percent organic matter or where roots are exposed. Avoid 

 contact of fruit or foliage with spray or mist. 



Blueberries may be planted in soil treated with Sinbar one 

 year after the last application. Do no replant to other crops for 

 2 years, or injury may result. 



* Trade Name 



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POMOLOGICAL PARAGRAPH 



^Tien can the severity of russet on Golden Delicious be estimated ? 

 Dr .~L'. L"! Creasy, Cornell University, Ithaca, New York, reported 

 at the 122nd Annual Meeting of the New York State Horticultural 

 Society that russet on Golden Delicious apples is present 30 days 

 after petal fall, but the high pigment concentration on the fruit 

 at this time makes it difficult to see. However, generally by 

 mid-July russet is readily visible and the amount estimated at 

 this time will not change through harvest. 



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