Abstract
The purpose of this work was to evaluate the levels of sulfur available in soil levels of gypsum.The experiment was conducted at the Experimental Station of sugar cane in Carpina (EECAC) from the Federal Rural University of Pernambuco (UFRPE), located in the city of Carpina FR. The experimental design was a randomized block consisting of 5 doses of mineral gypsum and 4 repetitions in a total of 20 experimental plots. At 10 months after the planting was held to the soil sampling, opening themselves to a profile in each plot. In each profile (20), with rings were held three soil samples (0.0 0.3 , 0.3 0.6 and 0.6 -0.9 m), respectively. The 60 samples after they have been put to dry and-drying, followed for analysis. Sulfur was extracted by monocalcium phosphate in water. It can be observed that in greater depths there was a greater extraction, with the exception of the second dose of gypsum in relation to the superficial layer. In the three depths to higher extraction of sulphate corresponded to higher dose of plaster.
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