机译:与咖啡田传统施肥系统相比,可变速率技术的经济可行性:案例研究
UFRRJ, Dept Engn, Inst Tecnol, Seropedica, RJ, Brazil;
PPGEA UFLA, Lavras, MG, Brazil;
Univ Fed Lavras, Dept Engn, Lavras, MG, BrazilUniv Fed Lavras, Dept Adm & Econ, Lavras, MG, Brazil;
variable rates of fertilizer; precision agriculture; costs; viability; coffee; conventional fertilization;