Banca de QUALIFICAÇÃO: ANA BEATRIZ CARNEIRO LEITE

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : ANA BEATRIZ CARNEIRO LEITE
DATE: 29/11/2022
TIME: 13:30
LOCAL: Sala de aula 1 do PPGF
TITLE:

Phytotechnical performance of curly lettuce (Lactuca sativa) in response to irrigation depths and doses of fermented compost under organic management

KEY WORDS:

Irrigation management, soil water balance, capacitive sensor, organic fertilization, Bokashi.

PAGES: 15
BIG AREA: Ciências Agrárias
AREA: Engenharia Agrícola
SUBÁREA: Engenharia de Água e Solo
SPECIALTY: Irrigação e Drenagem
SUMMARY:

Lettuce (Lactuca sativa) has high nutritional requirements and high sensitivity to soil moisture, and the  occurrence of water deficit and high temperatures can cause significant loss of productivity. The work will be carried out in two experiments, with the main objective of evaluating the phytotechnical performance of curly lettuce cv. Vera submitted to different irrigation depths and doses of fermented compost under organic management. Furthermore, it is intended to determine the crop coefficient (kc), from the evaluation of the vegetation cover growth through digital images, and the phenological stages of crop development using the accumulated degree-days methodology. In the first experiment, four irrigation depths equivalent to 100, 90, 80 and 70% of the crop water requirement (ETc) will be combined with four doses of fermented organic compost (0, 250, 500 and 750 g m-2), in factorial scheme. The different water supplies will be obtained using drip tapes with emitters of different flow rates and the organic compost will be produced from Gliricidia sepium bran and brewery residue. ETc will be determined from the soil water balance, using capacitive sensors. The relationship of ETc with the reference evapotranspiration (ETo) will allow the determination of kc at different stages of crop development. From the best dose of organic compost, a second experiment will be carried out in order to evaluate the development of the culture subjected to different water supplies, when the characteristics of the aerial part (number of leaves, fresh mass and leaf area) and the root in 6 different epochs. At the end of the studies, it is intended to recommend the dose of organic compost associated with the irrigation depth that maximize the development and productivity of lettuce, optimizing the use of water and nutrients in the organic production system.

COMMITTEE MEMBERS:
Presidente - 1224578 - DANIEL FONSECA DE CARVALHO
Interno - ***.371.857-** - JOSÉ GUILHERME MARINHO GUERRA - EMBRAPA
Externo ao Programa - 2131822 - CONAN AYADE SALVADOR - UFRRJ