Quantificação do teor de nutrientes em buva (Conyza bonariensis) e soja (Glycine max) em competição

Abstract

The soybean culture has been suffering with weed infestation, especially by the plant of buva (Conyza bonariensis), because it is a plant whose dissemination and proliferation occurs easily, and because it is an invasive plant that has become resistant to a series of herbicides, causing concern to farmers not only who grow soybeans, but other plants of economic interest, by the competition factor. The objective of this work is to quantify the extraction of nutrients from the weed and soybean in competition, and to analyze whether there was a significant difference in the nutrient contents. The results of the experiment show that through the laboratory and statistical analyses for the nutrients nitrogen, phosphorus and potassium, only two of them showed a significant difference between the treatments. This difference is found in nitrogen, in which the soybean plant has a significantly higher content than the one found in the rubber plant, and the other significant difference found was for potassium, in which positive results were obtained for the rubber plant, which statistically ended up having a higher content of the nutrient found. This factor shows us that this is a problem in agriculture, and that it tends to be on a large scale something that will cause losses to the producer.