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The Distribution of Excreta by Freely Grazing Cattle and Its Effect on Pasture Fertility: I. Excretal Distribution 1
Author(s) -
Petersen R. G.,
Lucas H. L.,
Woodhouse W. W.
Publication year - 1956
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/agronj1956.00021962004800100002x
Subject(s) - pasture , grazing , agronomy , poisson distribution , distribution (mathematics) , negative binomial distribution , biology , fertility , zoology , environmental science , mathematics , statistics , demography , population , mathematical analysis , sociology
Synopsis The negative binomial distribution function is used to characterize quantitatively the time‐space distribution of excreta from freely‐grazing animals over long periods of time; the Poisson distribution function was found to be reasonably accurate over short periods. Proportion of pasture covered by 0, 1, 2, … excretions during a grazing period appears to depend primarily on mean excretal density at the end of the period, and to be practically independent of the size and shape of the pasture.