Wanderley Jose de Melo

• Barium dynimics in a soil-sorghum system contaminated with barium salts of different solubilities, AP.R
• Ureaseactivity as affected by sampling time, sample handling and storage., AR.EXT

• Abstract

  Within Brazilian territory, Legal Amazon covers an area of around 4.4 million Km². Given that the Amazon region is rich in mineral resources, its exploration is a major factor in environmental degradation. Thus, the present study has the basic objective of proposing a recuperation plan for the area degraded by cassiterite mining with the National Forest of Jamari/RO. The study will be car…

  Recuperation of the soil in the area degraded by cassiterite mining in the National Forest of Jamari (RO), AP.TEM

(Only some records are available in English at this moment)

• Abstract

  The tomato is the most important vegetable crop in the world and the second most important in Brazil. However, it is considered a high-risk crop because of the necessity for high capital investment along with high susceptibility to biotic and abiotic factors. One cause of damage is Blossom-End Rot (BER), a physiological disorder related to calcium (Ca) deficiency. Although BER is attribut…

  Interaction Ni x Ca in control of blossom-end rot of tomato, BP.PD

• Abstract

  Currently, various human activities have increased the burden of toxic elements in the environment, especially in the soil. Among these elements, are the heavy metals, with barium (Ba) being recently included in the list of elements that present a risk to human health, causing it to be the focus of several studies, since information about its toxic effects on soil and plants are very limi…

  Absorption and release of barium by sorghum plants cultivated in soil contaminated with the element, BP.DR

• Abstract

  Potatoes are the most consumed vegetable by humans. As potato tubers develop into the soil, potatoes are usually grown on very sandy soils that cause leaching of many soluble nutrients, especially nitrogen (N). Potato root system is shallow and inefficient in absorbing nutrients, which demands high doses of N to supply the need of the crop. There is evidence that nickel (Ni) can beneficia…

  INTERACTION OF NICKEL AND NITROGEN IN POTATO CROP FOCUSING ON REDUCING N-FERTILIZER APPLICATION, BE.EP.PD