Growth and yield of soybean with penergetic application

Abstract

Soybean (Glycine max L.) plants are economically important for food industry and animal feed due their nutritional qualities. Soybean crops are highly productive and responsive to new technologies, such as, Penergetic. The aim of this study was to assess the effect of Penergetic-P and Penergetic-K on soybean growth and yield. The Penergetic products were tested according to five different treatments in the field: 1-) control (without NPK and/or Penergetic); 2-) 290 kg ha-1 NPK (04-24-18) + Micro; 3-) 300 g ha-1 Penergetic-P + 290 kg ha-1 NPK (04-24-18) + Sulfate (S); 4-) 300 g ha-1 of Penergetic-K 5-) 300 g ha-1 Penergetic-P + 300 g ha-1 Penergetic-K. The experiment was conducted in a randomized block design, with three replications for each treatment. Comparisons were performed by ANOVA and Duncan test (p ≤ 0.05). Differences among treatments for number of nodules per plant were not significant, but observed for dry weight of nodules (DWN). Application of Penergetic-K in soil increased the DWN in comparison with application of NPK and micronutrients. Shoot, root, total dry matter and shoot/root ratio did not differ among treatments as well as the chlorophyll index and nitrogen in shoots. The grain yield was lower with the addition of NPK + micronutrients and higher with the addition of Penergetic-K Penergetic-K addition increased soybean yield, up to 20% compared to the treatment with NPK + micronutrients. We conclude that the use of Penergetic benefits the soybean production.