Costantini, Alejandro, Andrea Segat, Dejair Lopes de Almeida, and Helvécio de-Polli. “Effect of Different Fertilizers on Microbial Biomass Carbon, Respiration and Yield under a Lettuce Crop”. Pesquisa Agropecuaria Brasileira 33, no. 1 (January 1, 1998): 71–76. Accessed July 5, 2026. https://apct.sede.embrapa.br/pab/article/view/4817.