| The stem growth, nutrition, and fruit yield of eggplant grown with different doses of cattle manure (CM) and magnesium thermophosphate (MT) were studied, according to the Central Composite Matrix of Box (8.3-518; 8.3-3,018; 48.3-518; 48.3-3,018; 0.0-1,768; 56.6-1,768; 28.3-0.0; 28.3-3,536; 28.3-1,768). Potassium sulfate (KS) was also used (24 g plant-1), as well as a cow urine (COU) solution (10 L 100 L-1 H2O, 500 mL plant-1), applied five times in topdressing. Two additional treatments were used: MT without COU and triple superphosphate + urea (TS plus Ur), both with nutrient levels (CM, P2O5, and KS) corresponding to the combination 28.3-1,768. The experimental design was blocks at random, with three replications. CM doses improved plant height (PH)... |
