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Soil Physical Factors Affecting Peanut Pod Development 1
Author(s) -
Underwood C. V.,
Taylor H. M.,
Hoveland C. S.
Publication year - 1971
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1971.00021962006300060042x
Subject(s) - point of delivery , penetrometer , arachis hypogaea , agronomy , soil water , penetration (warfare) , field experiment , environmental science , chemistry , soil science , biology , mathematics , operations research
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