出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：Lettuce is a crop widely cultivated throughout the country, they are sensitive to water stress, however they benefit from the use of organic fertilizers. The objective of this work was to evaluate the growth, development and productivity of lettuce under the effect of four doses of biofertilizer of bovine origin and different irrigation depths. Four doses of biofertilizer 10, 20, 40 and 60 m3ha-1 were tested, and four irrigation depths, 100, 90, 80 and 70% of the water requirements of the plant. The variables analyzed were, number of leaves, crown diameter, root growth, fresh mass of the aerial part, dry mass of the aerial part and dry mass of the root. The best variables were achieved with the highest doses of biofertilizer above 20 m3ha-1. The irrigation depths also had a positive influence on the development of the crop, the one that best influenced the development of the lettuce was the 126 mm blade, corresponding to 90% of the calculated water needs, so the 100% blade can cause a decrease in growth, for excess water. Therefore, the use of biofertilizer is a viable alternative, which can increase productivity and positively affect the qualitative variables of lettuce.
