August 2016

Ammonia volatilization in corn crop as a result of the application of different nitrogenous fertilizers

The experiment was carried out in a greenhouse with samples of Eutroferric Red Latosol. On each of these samples, an amount of 800 mg/kg of N was superficially added in the soil. The experiment consisted of five industrial sources of nitrogen, urea (45% of N), urea plus (45% of N), ammonium sulfate (20% of N and 24% of S), Yarabela® (27% of N) where we assessed the volatilization 1, 2, 5, 7, 10, 14, 18 days after...

Author(s): Jéssica Caroline Coppo, Maria do Carmo Lana, Marilda schmoller, Graziely Gody, Diego Fatecha Fois, Samara Brandão Queiroz, Eloisa Lorenzetti, Rodrigo Fernado Dourado, Marlon Rafael Luft, Danimar Dalla Rosa   and Cesar Kent Hoshiba Kawavata

August 2016

Soil management effects on phosphorus sorption and external P requirement in oxisols of Malawi

Oxisols are one of the major soils of Malawi and they are high in P sorption. Conservation agriculture has been practiced on this soil for some years now but soil management effects on P sorption and external P requirement (EPR) of Oxisols in Malawi have not, however, been determined. Soil management effects on P sorption and EPR of Oxisols in Malawi were therefore determined in the present study. The effects studied...

Author(s): Mnthambala F., James H. A. Maida, Max W. Lowole and Venon H. Kabambe

August 2016

Liming and selenium application impact on plant available selenium in selected soils of Malawi

Selenium (Se) is an essential micronutrient for humans and other animals. Its deficiency in food can cause cancer, cardiovascular and other diseases in humans. In high concentrations, Se is toxic for humans, animals and plants. The bioavailability of Se in soils largely determines the Se level in food, feed and therefore throughout the nutrition chain. Selenium content in soils is highly variable. The objective of this...

Author(s): B. Masanza, J. H. A. Maida, A. D. C. Chilimba, M. W. Lowole and P. C. Nalivata