RELATIONSHIPS BETWEEN SLUDGE DOSES AND CALCIUM CONTENT FROM AGRICULTURAL CROPS

By applying sewage sludge has been a complete Ca concentrations in soil and therefore were induced and observed some positive influences in nutrition and plant physiology. This improved environment like maize, wheat and soybeans have absorbed and used in specific quantities to ensure their normal physiology. Increases were evident in maize and moderate in wheat and soybean. The functions indicated concentrations of 0.4 to 0.5 % Ca in field maize, and 0.1-0.3 % in the maize from vessels, and then between 0.2 and 0.3 % Ca in wheat(2) and 0.3-0.34 % Ca in wheat(4), and between 1.0-1.2 % Ca in soybean. As the mature seeds was uncertain relations with negative trends in relation to levels of harvest obtained. In absolute values grains contained as in: 0.048-0.020 % maize both in the field and in dishes, 0.10-0.07 % for wheat (2 and 4) and about 0.04 % for soybeans