Weed Control in Sugarbeets with Herbicides and Cultivation

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Abstract
The effects of five herbicide and three in-the-row cultivation treatments on weed control and sugarbeet (Beta vulgaris L.) yield were studied at Mitchell and North Platte, Nebraska, during 1966 and 1967. Preplant soil incorporation treatments of 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone (pyrazon) + N,N,dimethyltri-decylamine salt of 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid (endothall), and S-ethyl N-ethylthiocyclohexanecarbamate (cycloate), and postemergence application of pyrazon + 2,2-dichloropropionic acid (dalapon) resulted in better weed control and more sucrose per acre than S-propyl butylethylthiocarbamate (pebulate) applied preplant and soil-incorporated, and the untreated check treatment. Herbicide-treated plots kept weed-free by handweeding did not differ from the handweed check in sucrose production. Rotary hoeing improved weed control and increased sucrose yields as compared to flextine harrowing and the no in-the-row cultivation treatment.