Banca de DEFESA: THAIS RAYANE GOMES DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : THAIS RAYANE GOMES DA SILVA
DATE: 16/03/2021
TIME: 13:30
LOCAL: Online
TITLE:

WATER CONSUMPTION OF PULSES IRRIGATED PEPPER IN DIFFERENT TIMES

KEY WORDS:

Capsicum annum L.; Irrigation management; Lysymetry; Fractionation of the irrigation blade.

PAGES: 74
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUMMARY:

Pepper (Capsicum annuum L.) is among the ten vegetables of greatest economic importance in the national market for vegetables, and to obtain high productivity it is necessary to use appropriate techniques in irrigation management. In light of this, the irrigation pulses consist of applying the necessary real irrigation in a fractional way throughout the day. Thus, the objective was to determine the crop evapotranspiration (ETc) and the cultivation coefficient (Kc) through drainage lysimeters with the inclusion of irrigation pulses at different times of cultivation in the pepper culture. The experiments were carried out in the experimental area for the Irriga Group, located on the premises of the Federal University of Alagoas, Arapiraca Campus, in the periods from January to March, May to July and August to October 2019. 25 drainage lysimeters were installed, distributed in five planting lines, in an area of 6.0 x 3.0 m in width and length, respectively, consisting of plastic material with a volume of 0.06 m3. Each set of 5 lysimeters corresponded to an irrigation pulse, the first set being called pulse 1 to set 5 which was called pulse 5. The Kc was obtained for each irrigation pulse, being determined by the ratio between ETc and the ETo (reference evapotranspiration). ETc was obtained daily for each pulse of irrigation, which was determined by the difference between the applied and drained blade. And ETo estimated through empirical methods: Penman-Monteith, Hargreaves-Samani, Solar Radiation and Blaney-Criddle. The first growing season showed the respective Kc's: pulse 1 with the lowest Kc (0.61; 0.61; 0.81; 1.09 and 1.24) and pulse 5 with the highest Kc (0.77; 0, 77; 0.89; 1.15 and 1.27), the 2nd growing season follows the same pattern of behavior with the lowest Kc for pulse 1 (0.55; 0.55; 0.74; 0.94 and 1.16) and the highest Kc at pulse 5 (0.62; 0.62; 0.76; 1.14 and 1.29), which continues to happen in the third growing season, where pulse 1 obtained lowest Kc (0.59; 0.59; 0.84; 1.04 and 1.22) and pulse 5 the highest Kc (0.70; 0.70; 1.00; 1.26 and 1.30 ) when compared to the others. In all growing seasons, ETc increased with the addition of irrigation pulses, in the 1st growing season, pulse 1 had a lower ETc with 8.36 mm (Total: 307.58 mm) and pulse 5 had a higher ETc with 8.40 mm (Total: 336.16 mm); in the second growing season, pulse 1 presented 4.41 mm ETc (Total: 171.74 mm) and pulse 5 of 4.51 mm (Total: 187.62 mm); and the third cultivation season, obtained for the wrist 1 an ETc of 8.92 mm (Total: 335.14 mm) and for the wrist 5 an ETc of 9.50 mm (Total: 386.35 mm). With respect to Kc, pulse 1 obtained the lowest and pulse 5 the highest, when compared to the others.

BANKING MEMBERS:
Presidente - 1544058 - MARCIO AURELIO LINS DOS SANTOS
Interno - 1543863 - CICERO GOMES DOS SANTOS
Externo ao Programa - 1293984 - MARCOS ALEX DOS SANTOS
Externo à Instituição - GERÔNIMO FERREIRA DA SILVA - UFRPE