Banca de QUALIFICAÇÃO: MATHEUS LIMA RUA
Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.STUDENT : MATHEUS LIMA RUA
DATE: 25/11/2024
TIME: 08:00
LOCAL: sala virtual
TITLE:
CROP EVAPOTRANSPIRATION AND WATER PRODUCTIVITY IN ECONOMICALLY IMPORTANT FRUIT TREES IN THE AMAZON
KEY WORDS:
Evapotranspiration, Amazon fruit growing, Water balance.
PAGES: 57
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Agrometeorologia
SUMMARY:
The objective of the study is to determine crop evapotranspiration and water productivity in economically important fruit trees in the Amazon. The study was conducted in commercial plantations distributed in four municipalities in the state of Pará, being located in: Castanhal in açaí plantation (Euterpe oleraceae Mart.), Santa Izabel do Pará in coconut plantation (Cocos nucifera L.), Capitão Poço in lime tree planting (Citrus latifólia T.) and Vitória do Xingu planting of cocoa (Theobroma cacao L.). Towers were installed in all experimental areas, housing meteorological sensors to measure temperature and relative humidity, global solar radiation, rainfall and volumetric water content in the soil. Crop evapotranspiration (ETc) was calculated using the soil water balance method. Water productivity was determined by the ratio between production and ETc. For the study areas, a completely randomized design with subdivided plots was applied, with two treatments (irrigated and non-irrigated) and two monitoring periods (rainy and less rainy). The Kruskal-Wallis and Wilcoxon-Mann-Whitney tests were applied to the daily ETc data (p < 0.05). For the water productivity data (compared only between treatments), the means will be compared using Student's t-test (p < 0.05). In the irrigated treatment (I) during the rainy season, the ETc of the açaizeiro, coqueiro, limeira and cacaueiro trees were 2.29 mm day-1, 2.18 mm day-1, 2.54 mm day-1 and 2.96 mm day-1, respectively. In the non-irrigated area (NI), the averages were 2.22 mm day-1, 2.14 mm day-1, 2.61 mm day-1 and 2.94 mm day-1, respectively. During the less rainy period, the ETc of the açaizeiro, coconut, lemon and cocoa trees were 2.91 mm day-1, 3.43 mm day-1, 3.47 mm day-1 and 3.77 mm day-1 respectively for treatment I. In NI, the averages were 2.22 mm day-1, 2.14 mm day-1, 2.61 mm day-1 and 2.94 mm day-1, respectively. The water productivity (WP) of the fresh fruit mass of the irrigated açaizeiro was 0.41 Kg m3 and in the non-irrigated 0.32 Kg m3. In irrigated coconut cultivation, the Pa of fruit number (NF) was 1.62 fruit m3 and 1.59 fruit m3 for I and NI, respectively. The volume of coconut water was 0.50 L m3 for both treatments. For the lemon tree crop, the NF Pa was 25.5 fruit m3 and 22.40 fruit m³ for treatment I and NI, respectively. Fruit weight was 2.24 Kg m3 and 1.90 Kg m3 for treatments I and NI, respectively. In the cocoa plantation with irrigation, the Pa for NF, number of almonds per fruit, weight of fresh and dry almonds per fruit were 5.14 fruits m3, 43.62 almonds m3, 0.52 Kg m3 and 0.21 Kg m3 respectively. As for the non-irrigated cacao trees, these same parameters obtained the respective values of Pa, 4.70 fruits m3, 55.73 almonds m3, 0.37 Kg m3 and 0.16 Kg m3.
COMMITTEE MEMBERS:
Presidente - 1356961 - PAULO JORGE DE OLIVEIRA PONTE DE SOUZA
Externa ao Programa - 2077542 - DAIANE DE CINQUE MARIANO - UFRAExterna à Instituição - SILVIA MARIA DANTAS - UFCG
Externo à Instituição - JULIANA CHAGAS RODRIGUES - UFRPE