Consumo hídrico e eficiência do uso da água da pimenta ‘Biquinho’ em cultivo hidropônico com água salobra

Ciencia Rural

article

Maria Augusta Amorim Bione¹  Alide Mitsue Watanabe Cova¹  Vital Pedro da Silva Paz¹  Ubirani Oliveira Santos¹  Maria Raphaela Severo Rafael¹  Francisco José Nunes Modesto¹  Hans Raj Gheyi¹  Tales Miler Soares¹ 

[1] Universidade Federal do Recôncavo da Bahia

关键词: Capsicum chinense Jacq;    salinity;    soilless culture;   

DOI  :  10.1590/0103-8478cr20220076

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The knowledge of water consumption and the efficiency of water use by crops is extremely important in the elaboration of agronomic and hydraulic projects of hydroponic systems. Thus, the present study determined the water consumption and water use efficiency of ‘Biquinho’ pepper cultivated in the hydroponic system using seven levels of electrical conductivity of the nutrient solution (ECsol) of 2.70, 3.64, 4.58, 5.28, 6.09, 6.90, and 7.77 dS m-1 and six replicates in randomized blocks. The hydroponic system used was the Nutrient Film Technique (NFT). The water consumption per plant was determined at an interval of ten days in the crop cycle (120 days after transplanting). The maximum mean daily water consumption was equal to 5.88 L plant-1 during the period 111-120 DAT, for ECsol of 4.58 dS m-1. The maximum water consumption for the crop cycle (120 DAT) was 275.66 L per plant for an estimated ECsol = 4.11 dS m-1. The highest water use efficiency (WUE), based on the total production of fruit fresh mass (ripe and unripe fruits) of ‘Biquinho’ pepper was 10.84 kg m-3 up to an estimated ECsol of 5.18 dS m-1, with an exponential reduction thereafter. The salinity of the nutrient solution, biomass production, and evapotranspiration are factors that influence the most water consumption of ‘Biquinho’ pepper.

【 授权许可】

Unknown