| Autor: |
Souza AR; Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Campina Grande, PB, Brasil., Silva AAR; Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Campina Grande, PB, Brasil., Lima GS; Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Campina Grande, PB, Brasil., Azevedo CAV; Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Campina Grande, PB, Brasil., Soares LAA; Universidade Federal de Campina Grande - UFCG, Centro de Ciências e Tecnologias Agroalimentar - CCTA, Pombal, PB, Brasil., Silva FA; Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Campina Grande, PB, Brasil., Capitulino JD; Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Campina Grande, PB, Brasil., Arruda TFL; Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Campina Grande, PB, Brasil., Chaves LHG; Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Campina Grande, PB, Brasil., Costa DS; Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Campina Grande, PB, Brasil. |
| Abstrakt: |
Considering the relevance of bell pepper and the limitations imposed by the deleterious effects of salt stress, especially in semi-arid regions, it is extremely important to establish strategies that can facilitate the use of saline water in vegetable production. In this scenario, this study aimed to evaluate the effect of the frequency of foliar application of salicylic acid on the morphophysiology and production of the bell pepper cv. "All Big" irrigated with saline water. The study was conducted at a greenhouse in Campina Grande - PB. The treatments were distributed in a completely randomized design and set up in a 4 × 4 factorial arrangement with three replications, corresponding to four application frequencies of salicylic acid (F1- No application of salicylic acid, F2 - Weekly application, F3- fortnightly application, and F4- monthly application) and four levels of electrical conductivity of irrigation water - ECw (0.8, 1.6, 2.4 and 3.2 dS m-1). The fortnightly application of salicylic acid at a concentration of 1.0 mM mitigated the effects of salt stress on the morphophysiology and production components of bell pepper cv. All Big cultivated with ECw of up to 2.4 dS m-1, which reinforces the hypothesis that salicylic acid can act as a signaling molecule and reduce the effects of saline stress in bell pepper, enabling the use of brackish water in agricultural activity, mainly in semi-arid regions of northeastern Brazil, which have a shortage of fresh water. |
