Evaluation of growth parameters of lettuce (lactuca sativa) inoculated with the strain estirpe sp 245 de Azospirillum brasiliense
Organic system; Azospirillum; Lettuce (lactuca sativa)
The cultivation of lettuce (lactuca sativa) is very common throughout the country, being an important source of income, mainly in family agriculture. The vegetable industry in Sergipe in recent years has been increasing production, contributing to the balance of supply and demand in the domestic market, with Itabaiana being one of the main producing municipalities. This municipality is located in the Central Agreste Sergipano Territory and located in the central area of the State of Sergipe, being one of the main highlights also in the production of lettuce. The objective of this study was to evaluate lettuce growth parameters, such as: root volume (VR), shoot diameter (APD), total fresh matter (MFT), total dry matter (MST), root length and nitrogen content in the aerial part (TN), in a commercial area of a farmer of the Association of Organic Producers of Agreste-ASPOAGRE. Experiment 1 started on 11/24/2018 and ended on 1/12/2019. In the first stage, it was evaluated lettuce growth parameters under field conditions and in the second one the parameters of the seedling stage were evaluated. In the first stage, the inoculant based on Azospirillum had a positive influence on practically all the analyzed parameters. In the second stage the effect of all the treatments used on the MF variable is similar. However, in the APA variable there was a significant effect of the treatments used, and the treatment G presents the highest mean value when applied and the lowest when the treatment F.