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This article in AJ

  1. Vol. 65 No. 6, p. 911-914
    Received: Feb 9, 1973

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Compatibility of Five Herbicides with a Suspension Fertilizer1

  1. L. J. Meyer,
  2. L. S. Murphy and
  3. O. G. Russ2



The chemical compatibility of five different herbicides (a thiocarbamate, an amide, a thiocarbamate-triazine mix, a urea-triazine mix, and an aniline) with a suspension fertilizer (containing 15% N, 6.5% P, and 12.5% K) was studied. Effectiveness of combined materials, applied after being stored in contact for various periods of time, was compared with that of materials applied separately. Nutrient composition (N, P, K), nutrient uptake, and dry matter yields of plants grown in a growth chamber were used to evaluate fertilizer effectiveness. Herbicide phytoxicity was evaluated by visual and pictorial comparisons. Physical compatibility of all mixtures used was determined to ascertain whether the mixtures would mix satisfactorily for field application.

All combined materials were both physically and chemically compatible and all herbicides were as effective when applied in combination with the fertifizer as when applied separately. All herbicides studied can be mixed with the suspension fertifizer prior to application and remain effective during the growing season, but agitation is required during storage.

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