Banca de DEFESA: PATRICIA SILVA DO VALE
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.DISCENTE : PATRICIA SILVA DO VALE
DATA : 04/04/2024
HORA: 08:30
LOCAL: Unemat - Tangará da Serra
TÍTULO:
AGRONOMIC PERFORMANCE OF ORANGE CULTIVARS GRAFTED ON TWO GRAFTS IN THE FIRST HARVEST IN THE EDAPHOCLIMATIC CONDITIONS OF TANGARÁ DA SERRA-MTPALAVRAS-CHAVES:
Citrus sinensis L., production, fruit quality.
PÁGINAS: 30
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitotecnia
RESUMO:
The orange tree (Citrus sinensis L. Osbek) is one of the best known, cultivated and studied fruit trees in the world. Brazil is currently the largest orange producer in the world and the main exporter of concentrated orange juice. Even though it is the world's largest fruit producer, the country still faces several challenges in the sector. The main of these challenges comes from phytosanitary problems, requiring diversification in the use of scion varieties and rootstocks in citrus, which makes it possible to overcome abiotic and biotic problems and obtain gains in productivity. Therefore, research related to expanding the genetic base of orchards and evaluating the agronomic potential of the new genotypes obtained must be conducted to support and optimize the production system. Therefore, this work aimed to: (i) evaluate the productivity and biometric parameters related to the vegetative vigor index of eleven sweet orange cultivars grafted onto two rootstocks: ‘Citrumelo Swingle’ and ‘Citrumelo F80-5’; (ii) evaluate the physicochemical characteristics and bioactive compounds of the fruits of the eleven cultivars grafted onto ‘Citrumelo F80-5’ in the orchard’s first harvest; (iii) select the best scion/rootstock combination(s) for the irrigated cultivation system, in the edaphoclimatic conditions of Tangará da Serra - MT. The experiment was conducted on the Boitanga farm, located in the city of Tangará da Serra - MT, the experimental design was in randomized blocks, in a 2 x 11 factorial scheme (two rootstocks and eleven scion cultivars), with four replications and one plant per portion. To determine productivity, the fruits were harvested and weighed throughout the 2022/2023 harvest. In biometric assessments, measurements were taken 36 months after planting and analyzes were carried out following the methodology of Portela et al. (2016). The physicochemical evaluations followed the methodology used by Caputo (2012). Preliminary results showed that the growth of orange trees grafted onto ‘Citrumelo Swingle’ was more vigorous compared to the growth of orange trees grafted onto ‘Citrumelo F80-5’, with plants exceeding 2.5m in height. Fruit analyzes showed the cultivar ‘Malhe 5’ as the crown with the highest fruit mass (MF) and ‘Pera Bianchini’ with the highest juice yield, with an average juice yield of more than 50%.
MEMBROS DA BANCA:
Presidente - 131991001 - WILLIAN KRAUSE
Externo à Instituição - ANA CLAUDIA COSTA - UFLA
Externo à Instituição - EDUARDO FERMINO CARLOS -