Influence of chemical and organic fertilizers in fruits of camapu (Physalis angulata L.)

Abstract

Camapu (Physalis angulata L.) is an exotic Amazonian fruit rich in nutrients, such as minerals, fibers, vitamins, and several secondary phenolic compounds. This fruit has been increasing in importance in the consumer market, however, cultivation is still limited due to the lack of knowledge of planting methods and nutrient management practices. This study aimed to evaluate the influence of chemical and organic fertilizer on the post-harvest quality and physicochemical composition of fresh camapu fruit. A randomized block design consisting of a 6 × 5 factorial design, with six fertilization treatments (T1, control 0% fertilization; T2, 100% NPK; T3, tanned chicken manure; T4, tanned chicken manure + NPK; T5, bovine manure; and T6, bovine manure + NPK) and five repetitions was applied. The basic chemical composition (e.g., moisture, proteins, lipids, ash, and carbohydrates) and minerals were analyzed using atomic absorption spectrometry, hue angle color, average weight, longitudinal and transverse diameters, density, pH, and soluble solids. The best responses for nutritional and mineral compounds were those subjected to organic fertilization at 40 ton.ha−1 of tanned bovine manure, and the organic source 20 ton.ha−1 of tanned poultry manure, and the interactions between chemical and organic fertilization 20 ton.ha−1 of tanned poultry manure and 60 kg ha−1 of N, 800 kg ha-1 of P2O5, and 260 kg ha−1 of K2O promoted larger and heavier fruits (p < 0.05).