Regulation of Weeds as a Factor Affecting the Profitability of Narrow-Leafed Lupine Production

Abstract

The purpose of the article is to determine the economic effectiveness of herbicidal treatments used in the cultivation of narrow-leafed lupine in the aspect of the profitability of its production. The domestic production of leguminous plants in only 30% covers the need for protein needed for the production of feed. In this way, Poland is conditioned on the import of soybean meal, which has a negative impact on its food security. Narrow-leaved Lupine is one of the basic species of legumes which are grown in Poland. Nevertheless, relatively few farmers decide to grow it due to low profitability, which is primarily related to the lack of optimal methods of weed control. The research was carried out on the basis of a field experiment in a randomized block arrangement. On the basis of the results obtained, the direct surplus resulting from the use of individual herbicides was determined, which was positive for all combinations. A negative, strong correlation between the number and fresh weight of weeds and the obtained yield was also found. In addition, a model was created to determine the level of yield depending on the condition and degree of weed infestation.