Premium
THE DECOMPOSITION OF CATTLE DUNG AND ITS EFFECT ON PASTURE
Author(s) -
Castle M. E.,
MacDaid Elizabeth
Publication year - 1972
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1972.tb00700.x
Subject(s) - pasture , biology , zoology , agronomy , fertilizer , grazing , significant difference , mathematics , statistics
A total of 228 separate dung pats voided by lactating dairy cows between May and October on a ryegrass/dover sward were studied for 2 years. The pats were on grazed swards receiving, on average, either 440 or 110 lb N/ac (492 or 123 kg/ha) per year. The mean area of the pats was 0.62 ft 2 (0.058 m 2 ) with no difference in area between the pats on the two N treatments. On average, the pats on the high‐ and the low‐N treatments crumbled in 63 and 55 days, respectively, and disappeared in 115 and 113 days, respectively. Pats deposited in July disappeared significantly quicker than pats deposited in May. The average area of rejected herbage around the pats was 2.63 and 084 ft 2 (0.244 and 0.078 m 2 ), respectively, 1–2 months, and 1 year after they were voided; but after 2 years the affected areas were recolonized with ryegrass and clover and were grazed normally. It is concluded that the levels of N fertilizer applied had no differential effects on the breakdown of the dung and on the subsequent recolonization of the affected areas by pasture plants.