Ferraz GA e S, da Silva FM, de Oliveira MS, Avelar RC, Sales RS. Spatial vatiability of the dosage of P2O5 and K2O tofertilize in variable rate and in a conventional way in a coffee field. Coffee Science - ISSN 1984-3909 [Internet]. 2015Aug.4 [cited 2025Jan.11];10(3):346 - 356. Available from: http://177.105.2.251/index.php/Coffeescience/article/view/878