Cultivares de cebola submetidas a diferentes lâminas de irrigação por gotejamento nos tabuleiros costeiros sergipano

• Ano de defesa: 2020
• Autor(a) principal: Santos, Lusivaldo Luíz dos
• Orientador(a): Gomes Filho, Raimundo Rodrigues
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Programa de Pós-Graduação: Pós-Graduação em Recursos Hídricos
• Palavras-chave em Português: Recursos hídricos; Irrigação por gotejamento; Cebola – Populações; Cebola – Meios de cultivo; Produtividade agrícola
• Palavras-chave em Inglês: Allium cepa L; Genotypes; Agricultural yield
• Área do conhecimento CNPq: ENGENHARIAS::ENGENHARIA SANITARIA
• Link de acesso: https://ri.ufs.br/jspui/handle/riufs/14266

The onion crop, for having great importance in the national scenario and for occupying the third position in productivity numbers, gains prominence in Brazilian agriculture. However, the agricultural sector, being a large consumer of water resources in agricultural production, needs special attention in public policies aimed at water resources. In view of the above, the aim of this study was to observe the effect of different drip irrigation depths in three onion cultivars for the edaphoclimatic conditions of Sergipano Coastal Trays. The experiment was implemented in the Experimental Field of Agricultural Sciences of the Federal University of Sergipe, called “Rural Campus” located at the coordinates (10 ° 55'S and 37 ° 11'O) and altitude of 18 meters in relation to the average sea level, in the municipality de São Cristóvão - Sergipe. The region's soil is classified as a typical dystrophic Red Yellow Argisol. With an As' climate, tropical rainy, with dry summer and rainfall around 1200 mm per year, with concentrated rains (70%) between the months of April to September. The experiment consisted of applying 5 irrigation depths (50, 75, 100, 125 and 150% of the crop evapotranspiration - ETc), in the onion crop, and verifying the performance between 3 cultivars IPA-11, Texas Grano 502 and IPA- 10. The experimental design used was in randomized blocks, totaling 15 treatments and 60 experimental plots. The irrigation depths estimated at 115.25% and 88.34% provided higher total and water yield for onion bulbs, in the order of 54.00 t ha1 and 12.34 kg m-3, respectively. The Texas Grano 502 and Vale Ouro cultivars IPA-11 provided greater water savings. The irrigation depths estimated at 116 and 94% of ETc provided higher commercial bulb yield and water yield for commercial bulbs, in the order of 53.86 t ha-1 and 11.88 kg m-3, respectively. The IPA 10 cultivar provided lower agronomic rates in the variables commercial productivity and average mass of commercial bulbs.