Efeito de diferentes lâminas de irrigação na produção de pimenta-de-cheiro (Capsicum chinense Jacq.) em Manaus – AM

Abstract

The pepper (Capsicum chinense). despite it’s great cultural and economic importance for the Amazon, needs many phytotechnical studies to improve its productivity. In order to evaluate the behavior of this species, the effect of irrigation on the environmental conditions of Manaus - AM was studied. The experiment was carried out in the experimental station of Vegetables Alejo von der Pahlen, adopting a randomized complete block design in which three water replacement slides were randomized, corresponding to 60%, 80% and 100% of the estimated evapotranspiration, with three replications. The drip irrigation system with 30 cm spacing between emitters and flow rate of 2.6 L h-1 was used. The following parameters were evaluated: plant height, stem diameter, number of fruits, total and average fruit weight, length and diameter of fruits. The applied blades did not significantly influence the parameters height, stem diameter, length and diameter of the fruits. In the first two, a growth tendency was observed due to the application of the 80% evapotranspiration replacement blade. However, in the fruit production component, the 80% replacement rate of evapotranspirated water provided better yield and average fruit weight, around 376.78 kg ha-1 and 17.35 g, respectively, under the edaphoclimatic conditions in which the study was conducted. However, it is recommended that other experiments be conducted to verify the behavior of this genetic material in periods of less precipitation.