Cultivo do cubiu (solanum sessiliflorum dunal) sob efeito de irrigação por gotejamento em ambiente protegido

Abstract

The cocona (Solanum sessiliflorum Dunal) is a source of plant domestication and Amazon, with the potential for agribusiness. It is usually grown in the open on the mainland. However there are few studies phytotechnical that enable increased fruit yield. This research aimed to evaluate the cubiu cultivation under the influence of drip irrigation in greenhouse conditions in the city of Manaus / AM. The experiment was conducted in a greenhouse in Acrisol Alic, in Manaus. Adopted the Experimental Design completely randomized in a factorial design with 3 irrigation levels and 4 varieties of cubiu with 5 repetitions. As each blade applied with a drip tape type with the emitters 10 cm spaced, 20 cm and 40 cm, corresponding blades 50%, 100% and 150% (ETc), respectively. The following traits were evaluated: average number of fruits, fruit diameter, fruit length, average fruit weight and length / diameter of the fruit. The applied water depths did not influence significantly the production of fruit. This indicates that the cubiu can be irrigated with a water slide 50% evapotranspiration without prejudice to the production of fruits per plant. The productivity components, there was a slight tendency of the blade equivalent to 150% of ETc influence the greatest number of fruits per plant. On the other hand, the blade equivalent to 100% of Etc gave the highest mean fruit weight and promoted a yield of 4 tons per hectare. Finally, the shape of fruit evaluated by the length-to-diameter ratio was not influenced by controlled irrigation, indicating that variation may be due to genetic effects of accessions.