Chemical attributes of yellow latosols in areas of occurrence of Mad Soya II in the West Region of Pará

Abstract

The efficiency of nutrients in the soil is the result of the interaction of several factors, and, in the SPD, the governing mechanisms are modified in speed and / or intensity by reducing soil disturbance and maintaining cultural foods on the soil surface. Anomalies in soil-related plants are directly linked to critical and toxic levels of physical, chemical or biological soil substances, logo, soil fertility and one of the factors of plant predisposition to pathogens. Mad soy-II is an anomaly that causes 40% reduction in crops and without a definite cause. The objective was to evaluate the contents and the variation of the chemical attributes of the soils in areas of occurrence of Soja Louca II. 180 colors are performed in 20 cm, 40 cm and 60 cm depth in areas with and without occurrence of anomalies in properties in the municipalities of Santarém, Belterra and Mojui of the fields in western Pará The chemical attributes Ph, P, K, Na, Ca, Mg, Al, Fe, Cu, Zn, Mn and CTC and Natural Clay Content were subjected to descriptive analysis and analysis of variances in the Biostat version 5.3 program. No differentiated differences were found between the attributes in the controls, being used statistically as areas with and without occurrence of Crazy Soy II, due to micronutrient earthquakes at toxic levels in most samples in both tests at all depths collected. The attributes with the highest and lowest variation coefficient were pH (7.45%) and Zn (198.17%) at 20cm, pH (6.66%) and Cu (250.70%) at 40cm and pH (5 , 84%) and Cu (238.74%) at 60m depth. An analysis of variation in chemical attributes did not show significant differences between depths