Performance of the pineapple sweet orange on different rootstocks

Abstract

This study aimed at evaluating the agronomical performance of ‘Pineapple’ sweet orange grafted on ten rootstocks, in 2011-2017 harvests, so as to recommend the best combinations to be commercially explored in citrus growing regions in Bahia and Sergipe states, Brazil. An experiment was installed to test ten rootstock for 'pineapple' sweet orange: 'Santa Cruz' Rangpur lime, 'Red Rough' Lemon, 'Orlando' Tangelo, 'Sunki Tropical' Mandarin, 'Swingle' citrumelo, the citrandarins 'Indio' and 'Riverside' and the hybrids HTR-051, LVKxLCR-010 and TSKxCTTR-002. The trial was installed in 2008 in the municipality of Umbauba in Sergipe. The experimental design was complete randomized blocks with four replications and two plants per plot. Plant spacing was 6 x 4 m which corresponds to 416 plants per hectare and the orchard was rainfed and followed conventional management. The following agronomical parameters were evaluated: vegetative growth, drought tolerance, yield and physico-chemical quality of fruits as well as the abundance of phytophagous mites. Both hybrids LVK x LCR – 010 and TSKC x CTTR-002 and the ‘Santa Cruz’ rangpur lime bestowed higher tolerance to the dry period on the ‘Pineapple’ orange tree, by comparison with higher water deficit susceptibility conferred by the ‘Orlando’ tangelo and the ‘Swingle’ citrumelo. Rootstocks HTR-051, ‘Riverside’ citrandarin, ‘Swingle’ citrumelo and TSKC x CTTR-02 induced plants to remain small and, thus, showed aptitude for culture densification. Cumulative yield of the ‘Pineapple’ orange was higher on rootstocks ‘Red Rough’ lemon and ‘Santa Cruz’ Rangpur lime, the hybrid LVK x LCR-010 and ‘Sunki Tropical’. Yield efficiency was not influenced by the rootstocks. Physico-chemical quality of fruits of ‘Pineapple’ orange is affected by the rootstocks and meets the requirements of juice industries. Regarding plant resistance, the rootstocks did not influence the population density of mites P. oleivora, E. banksi and T. mexicanus on ‘Pineapple’ oranges. Results show that both rootstocks ‘Red Rough’ lemon and ‘Santa Cruz’ rangpur lime conferred high regularity to ‘Pineapple’ orange trees in citrus growing regions in Bahia and Sergipe states.

Superior sweet oranges for varietal diversification of tropical rainfed orchards

“…Overall, the varieties reached peak yields in the fifth harvest, and subsequently decreased. The same pattern was observed for 'Sincora,' 'Valencia Tuxpan,' and 'Pineapple' sweet oranges in the same study region (Carvalho et al, 2019 a;Martins et al, 2020). As the experimental orchard was cultivated under rainfed conditions, predominantly negative yearly water bal ances possibly interfered with the productive poten tial of the different varieties.…”

“…Lower yields in northeastern Brazil stem mainly from soils with fertility restrictions and hardsetting layers that impair drainage and root development in addition to water deficits due to irregular rainfall dis tribution, low technology adoption, improper man agement practices, and aging plants (Gomes et al, 2017;Carvalho et al, 2020;Martins et al, 2020). Despite water deficit negatively affecting citrus yields, citriculture in Brazil is predominantly rainfed (Carvalho et al, 2019(Carvalho et al, a, 2020(Carvalho et al, , 2022.…”

Substandard and Semi-Dwarfing Citrus Rootstocks for More Intensive, Higher-Density, and Sustainable Plantation Systems

“…Many studies have reported the effect of citrus rootstocks on tree growth [11,[32][33][34]. In fact, substandard, semi-dwarfing, and dwarfing citrus rootstocks are known [35].…”

“…The rootstock/scion diameter ratio is an indicator of the equality in growth rate between rootstock and scion (cultivar), so the difference among diameters may be an incompatibility measure [34].…”

Comparative Study of The Yield and Fruit Quality of Salustiana Orange Cv. Grafted on Some Citrus Rootstocks

“…The previous works have shown that citrus rootstocks impact inversely on scion growth such as environmental and soil conditions (Forner-Giner et al, 2014;Chahal and Gill, 2015). The chosen of appropriate graft is essential for the production of fruits because of effects physiological both scion and rootstock relations of each other (Sharma et al, 2015), minerals uptake (Toplu et al, 2012 andHayat et al, 2019), vigor and yield behavior (Mallick et al, 2019 andMartins et al, 2020).…”