Saline stress and potassium/calcium ratio in fertigated eggplant
| Autor: | Ana Jacqueline de Oliveira Targino, José Francismar de Medeiros, Sandy Thomaz dos Santos, Luilson Pinheiro Costa, Francisco de Assis de Oliveira, Jefferson M. A. P. dos Santos |
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| Jazyk: | angličtina |
| Předmět: |
0106 biological sciences
Fertigation Environmental Engineering cultivation of vegetables Potassium medicine.medical_treatment chemistry.chemical_element Calcium 01 natural sciences Irrigation water Solanum melongena L salinity Yield (wine) medicine lcsh:Agriculture (General) Saline Mathematics Fresh weight food and beverages 04 agricultural and veterinary sciences lcsh:S1-972 Salinity Horticulture chemistry fertigation management 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Revista Brasileira de Engenharia Agrícola e Ambiental-Agriambi, Vol 22, Iss 11, Pp 770-775 |
| ISSN: | 1807-1929 |
| Popis: | In order to evaluate the effect of irrigation water salinity in interaction with different potassium and calcium ratios applied through fertigation in eggplant, an experiment was carried out at the Department of Environmental and Technological Sciences of the Federal Rural University of the Semi-Arid Region, in Mossoró, RN, Brazil. The experimental design was randomized blocks, in a 5 x 4 factorial scheme, with four replicates. The treatments were obtained by the combination between five ionic ratios of potassium and calcium (F1 = 4.2/1; F2 = 3.5/1; F3 = 2.8/1; F4 = 2.2/1; F5 = 1.8/1) and four levels of irrigation water salinity (S1 – 0.5; S2 – 2.0; S3 – 3.5; and S4 – 5.0 dS m-1). The following variables were evaluated: number of fruits per plant, fruit length, fruit diameter, fruit fresh weight and yield. Yield, fruit length, fruit fresh weight and number of fruits decreased with the increase of salinity in all the treatments. Salinity significantly affected fruit diameter, which increased only under fertigation with potassium-rich solutions. |
| Databáze: | OpenAIRE |
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