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This article in AJ

  1. Vol. 63 No. 6, p. 953-954
     
    Received: May 8, 1971
    Published: Nov, 1971


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doi:10.2134/agronj1971.00021962006300060042x

Soil Physical Factors Affecting Peanut Pod Development1

  1. C. V. Underwood,
  2. H. M. Taylor and
  3. C. S. Hoveland2

Abstract

Abstract

Effects of crust strength and soil water potential on peg penetration and pod development in peanuts (Arachis hypogaea L.) were evaluated. When fully constrained, pegs developed as much as 13 bars pressure, but under simulated field conditions the pegs exerted only 3 or 4% of that pressure. In a field experiment the percentage of pegs that penetrated the upper 1.5 em of pegging zone soil and the weight of pods that developed in the pegging zone decreased as penetrometer resistance increased. The rate at which individual pods increased in size was not reduced until soil water potential was reduced to below ∗15 bars.

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