Desempenho de cultivares de goiabeiras em ambientes irrigado e sequeiro

Abstract

The fruits of guava (Psidium guajavaL.) are highly appreciated not only for aroma and flavor, but also for nutritional value, being a rich source of vitamin C and can be consumed in naturaor in their industrial forms. The objective of this work was to evaluate the performance of guavacultivars, its initial production and its fruit quality in irrigated and non-irrigated environments. Planting was carried out in February 2016, at 2.0 x 4.5 m spacing, with seedlings formed by cuttings from a commercial nursery. The plants were conducted in the espalier system, with regular prunings for fruiting. It was used a complete randomized block design in a 3 x 2 factorial arrangement, with three cultivars (Tailandesa, Século XXI and Pedro Sato) and two production environments (irrigated and non-irrigated). Productive variables (yield per plant and fruit mass) and qualitative variables (pH and total soluble solids content) were analyzed in the first two crop cycles. The yield and mass of fruits of evaluated cultivars were not affected by the additional irrigation of the plants. The irrigation has decreased the pH and the level ofsoluble solids content of the fruits. The 'Tailandesa' guava cultivar was the one that presented the best productive performance for cultivation in the region of Vera Cruz, SP.

Fruit production and quality of ‘Paluma’ guava with nematode-tolerant rootstock irrigated in the semi-arid region

“…According to Cavalini et al (2015), the adequate content of soluble solids for the harvest of 'Paluma' guava is 7.6 °Brix, and the titratable acidity is 0.7%, parameters that were achieved in all treatments of the present study (Figures 6A and B). Martins et al (2020), when evaluating the performance of guava cultivars in irrigated and rainfed environments, found that supplemental irrigation interfered in the total soluble solids content of guava fruits, differing from the present study. Both deficit and excess of water cause stomatal closure as they became stressful factors, thus reducing the absorption of CO 2 , substrate of photosynthesis and, consequently, the production of photoassimilates such as sugars and organic acids (Taiz & Zeiger, 2017).…”

Compatibility and phenotypic variability of guava accessions grafted on BRS Guaraçá rootstock: vegetative and fruit production traits1

“…Guava (Psidium guajava) is an important tropical fruit species due to the nutritional quality, aroma and flavor of its fruits (Martins et al 2020).…”