Effect of Calcium - Potassium Equilibrium on Tomato Plants Grown Hydroponically | ||||
| New Valley Journal of Agricultural Science | ||||
| Article 6, Volume 3, Issue 8, April 2023, Page 823-832 PDF (428.87 K) | ||||
| Document Type: Original Research | ||||
| DOI: 10.21608/nvjas.2023.210421.1206 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Abeer Abd El Moiez Ahmed Bakr   1; Khaled G. Abdelrasheed2; Ahmed Mohamed El Mahdy3
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| 1Soil and Water Dep., Faculty of Agriculture, South Valley University, Qena, Egypt. | ||||
| 2Department of Horticulture, Faculty of Agriculture and Natural Resources, Aswan University, Egypt. | ||||
| 3Soil, Water and Environment Research Institute, Agriculture Research Center, Giza 12112, Egypt. | ||||
| Abstract | ||||
| In order to study the effect of calcium-potassium Equilibrium in hydroponics culture nutrient solution on growth, nutritional status and productivity of tomato plants (cv. Red spring) an experiment was conducted at a private hydroponic farm in Qena Governorate through the Soils and Water department, faculty of Agriculture, South Valley University, Egypt. The site is at (latitude 26° 11' 22.2'' N to Longitude 32° 44' 25.5'' E), and 81 m above sea level. Tomato plants were grown hydroponically using six types of nutrient solution: 1) standard solution adapted with nutritive needs of tomato plants (balanced in Ca and K), 2) Ca deficient solution, 3) Ca excess solution, 4) K deficient solution, 5) K excess solution and 6) Ca and K excess solution. The obtained results showed that, Compared to balanced Ca-K solution or those deficient in Ca or K content, “Red Spring” tomato plants grown in nutrient solution rich Ca or in K or rich in both Ca and K present higher and significant growth parameters, cluster number/plant and fruit numbers/cluster. Significant differences were obtained in leaves mineral contents (N, P, K, Ca, Fe and Zn) as a result of varying Ca-K equilibrium of nutrient solution. However, the antagonism between Ca, K and Mg Clearly observed. Fruit physical and chemical characteristics significantly affected by varying the Ca-K equilibrium in the nutrient solution. | ||||
| Keywords | ||||
| Tomato; Calcium; Potassium; Hydroponics; Ca-K equilibrium | ||||
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