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Abstract
Weed control is essential for production of high quality vegetables with maximum yields. (±)-2-[4-[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acid (fluazifop) is a systemic postemergence herbicide that selectively controls annual and perennial grasses in dicotylendonous crops. In the United States, fluazifop is registered for control of emerged grasses in soybeans, cotton, nonbearing trees, vines, and strawberries, dicotyledonous ornamentals, and fallow land (Imperial Chemical Industries, Inc. 1985; Fusilade-2000 product label I.C.I. Americas, Inc., Agr. Chem. Div., Wilmington, DE 19897). Research has dealt with the safe use of fluazifop in field-grown vegetables at various growth stages (4), but there are no data in the literature describing the effect of fluazifop on greenhouse grown transplants. Therefore, we determined the effect of two rates of fluazifop on the growth and development of five vegetables grown in a greenhouse for transplants.
Abstract
Sodium azide (NaN3) applied at 134.4 kg/ha as a soil fumigant did not drastically alter the quality of vegetable root crops grown on treated soil. Azide soil treatment had no influence on quality of beets (Beta vulgaris L.) or potatoes (Solanum tuberosum L.). Differences were noted in quality of turnips (Brassica rapa L.) during 1976; however, no differences were found during the 1977 growing season at 2 locations. Azide soil treatments resulted in differences in quality of carrots (Daucus carota L.). Some differences that occurred were beneficial such as increased size and carotenoid content of carrots.