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This article in AJ

  1. Vol. 63 No. 3, p. 474-477
     
    Received: Nov 2, 1970


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doi:10.2134/agronj1971.00021962006300030038x

Sugarbeet Response to Deep Tillage, Nitrogen, and Phosphorus on Pullman Clay Loam1

  1. A. C. Mathers,
  2. G. C. Wilson,
  3. A. D. Schneider and
  4. Paul Scott2

Abstract

Abstract

This experiment included tillage to 15, 20, 30, 40, 60, and 80 cm depths and N and P fertilizer rates to provide an adequate plant nutrient level. The experiment was performed with both level border and graded furrow irrigation to determine the effect of deep tillage on yield of sugarbeets (Beta vulgaris L. variety ‘HH-10’).

Sugarbeet yields were increased by deep tillage and added N with adequate irrigation, but there was no yield increase from applied P. Deep tillage increased yields more where N was applied. Also, the response to N was greater after deep tillage to 40 cm in two of three years. Deep tillage increased the water intake rate, thus favoring good root development during wet seasons. Higher sugar yield after deep tillage was attributed to increased water intake, improved aeration, reduced bulk density, less root rot, and increased response to N.

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