Banca de DEFESA: GABRIEL SIQUEIRA TAVARES FERNANDES

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : GABRIEL SIQUEIRA TAVARES FERNANDES
DATE: 17/02/2025
TIME: 08:00
LOCAL: sala virtual
TITLE:

AGROMETEOROLOGICAL DYNAMICS IN GREEN DWARF COCONUT AGROECOSYSTEM IN IRRIGATED AND NON-IRRIGATED SYSTEM IN THE EASTERN AMAZON

KEY WORDS:

: Cocos nucifera L. Seasonality. Tropical fruit growing.

PAGES: 140
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Agrometeorologia
SUMMARY:

Coconut cultivation is gaining prominence in Amazonian fruit farming, positioning Northern Brazil as one of the largest producing regions on the national scale. The dwarf coconut palm exhibits significant sensitivity to meteorological conditions, which necessitates a thorough understanding of atmospheric effects on this species for its effective management. Given this necessity and the scarcity of information of this nature, the present study aimed to characterize and understand the agrometeorological dynamics associated with the cultivation of irrigated and non-irrigated green dwarf coconut intercropped with the tropical cover crop kudzu under the microclimatic conditions of Santa Izabel do Pará, eastern Brazilian Amazon. The experiment was conducted in a commercial area of green dwarf coconut in Santa Izabel do Pará, Pará, Brazil, considering one irrigated area and another managed under rainfed conditions. A micrometeorological tower was installed in each experimental area to collect meteorological variables, and phytotechnical variables were measured simultaneously. In general, it was observed that climatic seasonality affects critical variables in the cultivation, such as fruit mass, water content, and commercial cycle duration, highlighting irrigation as a stabilizing factor to mitigate seasonal losses caused by reduced water availability. The predominant energy flux in this agroecosystem is latent heat (LE), accounting for 70–80% of the net radiation. The average evapotranspiration in the cultivation was 2.58 (± 0.84) mm day⁻¹, resulting in an adjusted crop coefficient (Kc) of 0.80. The use of satellites for estimating radiation balance components and the three-layer model for evapotranspiration estimation demonstrated good performance indices, indicating that these methodologies can be applied in the region. In this context, the findings provide key insights for crop management, offering essential data for maximizing production and supporting agricultural planning.

COMMITTEE MEMBERS:
Presidente - 1356961 - PAULO JORGE DE OLIVEIRA PONTE DE SOUZA
Externa à Instituição - ALINE ANDERSON DE CASTRO
Externa à Instituição - MAGNA SOELMA BESERRA DE MOURA
Externo à Instituição - BERGSON GUEDES BEZERRA - UFRN
Externo à Instituição - FABIO RODRIGUES DE MIRANDA - EMBRAPA
Externo à Instituição - SAMUEL ORLANDO ORTEGA FARIAS - UTALCA