G. A. Guedes

Urease activity and its relation to soil organic matter, microbial biomass nitrogen and urea-nitrogen assimilation by maize in a Brazilian Oxisol under no-tillage and tillage systems

R. Roscoe, C. Vasconcellos, L. A. Fernandes, 2000, Biology and Fertility of Soils.

Challenges in chemical management of soybean looper (Chrysodeixis includes) using several insecticides

R. P. Marques, J. Arnemann, I. Valmorbida, 2019, Australian Journal of Crop Science.

Interaction of phosphorus x potassium x lime in sugar-cane (plant crop).

J. D. Silveira, J. O. D. Siqueira, G. A. Guedes, 1980 .