| ABSTRACT This study aimed to evaluate the content of macronutrients and sodium in corn ( Zea mays) plants as a function of different doses of cassava wastewater and ages of the plants after emergence. The experiment was conducted in a greenhouse in pots with capacity for 25 dm3 of soil, using a 5 × 3 factorial design with four replicates. The studied factors were doses of cassava wastewater: 0; 12.6; 25.2; 50.4; 75.6 m3 ha-1, and plant age: 20, 40 and 52 days after emergence (DAE). Potassium, calcium, magnesium, nitrogen, phosphorus, sodium and sulfur contents were evaluated in leaves and stalks. Nutritional deficiency of calcium was visible at 20 DAE. The increment in cassava wastewater doses increased N, P and K contents in plant shoots, but decreased Ca... |
