Document Type : Original Article


PhD on Agriculture and plant breeding, Mazandaran, Iran



Nitrification procedures could have a significant position in the performing of Western Australia natural ecosystem. It is instantly concerned in plant nitrogen defeats via learn and denitrification. This process suppression with pastureland is incorrectly comprehended. The study has been accomplished on the deep sand at Mingenew in the Northern Agricultural Region,WA. Nitrification amount has been specified yearly, perennial pastureland and tagasaste grasses cultivated in site. Nitrification and prohibition amounts have been estimated according to measures of NH_4-N,NO_3-N insix months. In natural situations, the nitrification amounts of ammonium-N (NH_4-N) have been fast from 80 to 97 percent in the season. Nitrification amounts under yearly, perennial pastureland and tagasaste plants have been 35 to 80 percent, 58 to 58 percent, and 30 to 75 percent orderly. There is a highly negative correlation i.e., R^2= -0.84 between biomass and nitrification amount, and a highly positive correlation among biomass and prohibition amount i.e., 0.74. These outcomes present that pastureland types could have significant effects for nitrogen cycling at the constant growing and individual density.


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