Desempenho agronômico, nutricional e sanitário do sorgo gigante boliviano "AGRI 002-E" em função da fertilidade do solo

Abstract

The sorghum crop has gained space in recent years in Brazil, which has become the eighth largest global producer. The tolerance of suffering to water stress has encouraged an increase in the area planted with this cereal, which has purposes ranging from human food to an energy source. In this scenario, the cultivation of sorghum (Sorghum bicolor (L.) Moench), due to its natural adaptation to adverse environmental conditions, plays an increasingly important role in food security. The objective of this work was to evaluate the effect of soil fertility on the agronomic, chemical and nutritional characteristics of Bolivian giant sorghum “AGRI 002-E” with two treatments consisting of two soils with different chemical characteristics (A and B) with ten procedures. The experimental design used was completely randomized. The following were measured: The estimated chlorophyll content measured on the blade of the third fully expanded leaf from the apex to the base of the plant and on the middle leaf, height, stem diameter, just below the middle leaf and at the base of the plant, number of live leaves, estimate of leaf area, anthracnose severity and forage mass. They also evaluated the contents of dry matter, mineral matter, crude protein, neutral detergent fiber and acid detergent fiber, lignin in acid detergent, cellulose, silica and in vitro digestibility of the plant's organic matter. Leaf area was 33.59% lower in soil B. Anthracnose showed high negative transpiration with all morphological and productivity characteristics. The nutritional value of giant Bolivian sorghum was uniform throughout its structure, when cultivated in soil A fibrous.