Banca de DEFESA: IVANILDO DE SOUZA CORTE

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : IVANILDO DE SOUZA CORTE
DATA : 23/05/2019
HORA: 09:00
LOCAL: Instituto de Agronomia
TÍTULO:

PITAYAS GROWTH IN DIFFERENT CONDITIONS OF CULTIVATION IN BRAZILIAN SEMI-ARID

PALAVRAS-CHAVES:

Hylocereus undatus. Selenecereus spp. Shading. Organic and agroecological production. 

PÁGINAS: 47
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitotecnia
ESPECIALIDADE: Manejo e Tratos Culturais
RESUMO:

The objective of this work was to evaluate the growth of species of pitaya in a typical semi-arid climate under the following conditions: sub-forest of native vegetation; on shade cover with 50% sunlight interception and in full sunshine regime, aiming at an income generation alternative for the family farmer. The experiment was carried out in a randomized block design with four treatments, that is to say, different species of pitayas: (1) red-pitaya-red-pitaya (Hylocereus costaricensis), (2) white-pitaya red-pitaya (Hylocereus undatus), (3) pitaya-native of the Cerrado (Selenicereus setaceus) and (4) native species (Selenicereus spp), with four replicates or blocks, four useful plants per plot. For the planting of the cuttings pits were prepared in the dimensions of 0.40 X 0.40 X 0.40 m, spacing 2.5 m between rows and 2 m between plants on the same row. The growth of each plant was managed, leaving only two shoots followed and the length of these shoots was monitored along one year of cultivation, as well as the total height relative to the soil. The data were submitted to analysis of variance using the Rbio program. The results made it possible to conclude that in the sub-forest environment of native vegetation, the highest survival rate of the implanted cuttings occurs for Selenicereus setaceus and the lowest for Hylocereus costaricensis; and also, the four species of pitahies in this environment, have, after 12 months of cultivation, similar vegetative growth. In the environment with sombrite cover, for the four species tested, close to 100% of the implanted cuttings grow and the species Hylocereus costaricensis has the highest vegetative growth performance. In full sunshine regime there is a great mortality of the pitayas, not allowing to make better analyzes of their behavior; still in this situation, the native species of the Cerrado shows greater tolerance, whereas Hylocereus costaricensis is the most sensitive. Thus, shading increases the percentage of survival and favors the initial growth of the pitayas cultivated under the Brazilian semi-arid conditions., in the Caatinga biome, in the Cerrado and its transition zones.

MEMBROS DA BANCA:
Presidente - 1863063 - LUIZ AURELIO PERES MARTELLETO
Externo ao Programa - 2870981 - ALEXANDRE PORTO SALMI
Externo à Instituição - RAUL CASTRO CARRIELLO ROSA - EMBRAPA