Desempenho agronômico da cultura do camapu (Physalis angulata L.) submetida a diferentes substratos orgânicos

Abstract

The camapu (Physalis angulata L.) belongs to the Solanaceae family, it is a shrub herbaceous species, distributed throughout the tropical and subtropical regions of the world. The Brazil has the potential to stop being an importer and become an exporter of this fruit, due to its great adaptability, combined with easy cultivation and the possibility of incorporation into organic crops. Considering these aspects, this work aims to analyze the vegetative growth and production of camapu submitted to different unconventional organic substrates. The experimental research was carried out in a greenhouse, at the Federal University of Amapá / Campus Mazagão, from October 2019 to January 2020. The seeds used in the experiment were obtained at the fair in Mazagão-AP. Organic compounds were collected from the Curuçá and Cajari rivers, in the interior of the city of Mazagão-AP. Camapu seeds were germinated in sand with sawdust cover, after germination they were seeded into buckets of 15 liters of substrate. The experiment was conducted in formulations of five treatments: T1: only black soil; T2: 50% decomposed Ouricuri (Syagrus coronata) substrate and 50% black earth; T3: 50% of substrate of the rubber tree stem (Hevea brasiliensis) decomposed and 50% of black soil; T4: 50% decomposed açaí seed (Euterpe oleracea Mart.) And 50% black earth; T5: 50% fermented buffalo manure and 50% black earth. After germination, measurements of stem diameter, stem length and crown diameter (at 48, 55, 62 and 69 days) were performed to determine plant growth. To determine productivity, counting and weighing of ripe fruits were performed (at 94, 101 and 108 days after germination). The results show that the use of black soil in the proportion of 100%, provides the best results in the variables: plant height, stem diameter, growth and production of the cap. The use of buffalo manure and black earth in the proportion (1:1) is not recommended, for the variables analyzed in this work because this treatment has caused low plant development and low productivity