Efeito do período de emergência de plântulas no desenvolvimento de mudas de Euterpe oleracea Mart.

Abstract

Considering the power of Brazilian agribusiness in different sectors worldwide, it is important that there is a follow-up of scientific material that helps maintain this global agribusiness prominence. Having fruit as a chosen sector, more specifically the fruit of Açaí (Euterpe oleracea), which is one of the current global highlights of national fruit growing, having a production chain that grows every year, and with significant increases in production and export. The present work sought to evaluate the effect of the seedling emergence period on the development of Euterpe O seedlings. Aiming to find an ideal germination period to generate seedlings suitable and of quality for commercial production. The experiment was carried out on the campus of the Universidade Federal Rural da Amazônia, Belém campus, in the area of the Instituto de Ciências Agrárias, the ecotype FCAP 31, material from the institution, was used. The plants were divided into four treatments: T1 - seeds germinated until the 5th day after the beginning of agronomic germination, T2 - seeds germinated from the 6th to the 10th day, T3 - from the 11th to the 15th day, T4 - from the 16th to the 20th day, germination time the only variable. The treatments were submitted to biometric analyses, gas exchange analyses, chlorophyll content analyzes (SPAD Index), leaf area index (LAI) analyzes and dry matter analysis. In view of the conditions in which the work was carried out, after the analyzes it was concluded that: treatment 1 had the most prominence among the analyzed parameters, being the most recommended for high vigor seedlings, with T1 to T3 being the standard for seedlings with good content for production, and T4 had the worst indexes evaluated, being the only treatment not recommended for use in seedling production due to significant parameters of low vigor content.