English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This study aimed to evaluate effects of rock phosphate and sewage sludge compound fertilization in level of contents of heavy metals and nutrients in two consecutive cultivation of corn grain. The project was conducted in an Haplic Cambisol on a period of days between April 10, 2009 and September 15, 2010. The treatments in factorial scale 2 by 4 meters corresponds to application on the first corn cultivation of 2 doses of rock gafsa phosphate (0 and 90 kg ha-1 of P2O5) and 4 compound doses of sewage sludge (0; 25; 50 and 75 t ha-1, in dry specimen). The experiment followed random blocks design with three treatments repetition. The fertilization with rock phosphate increased the levels of N, P, K and Mg only in the first corn grain cultivation and did not had influence on the levels of Zn, Cu, Ni, Pb, Cr and Cd in the two successive cultivations. The fertilization with sewage sludge compound increased the levels of N, P, K, Mg and Zn in the first corn grain cultivation and P and Zn for the second. In addition, the fertilization with sewage sludge did not had influence on levels of Ca, S, Cu, Ni and Pb in any corn cultivation. Independent of the effect of the treatments, only Pb showed concentration above of acceptable limits for nourishment.

NUTRIENTS AND HEAVY METALS IN MAIZE CROP FERTILIZED WITH ROCK PHOSPHATE AND BIOSOLID