Hemeid, M., EL-Tabbakh, S. (2020). Effect of Nutrient Mixture and Potassium Levels Applied as Spray or to Soil on Sunflower (Helianthus annuus L.)Yield and its Components. Journal of Plant Production, 11(12), 1289-1294. doi: 10.21608/jpp.2020.149799
Mona M. Hemeid; S. S. EL-Tabbakh. "Effect of Nutrient Mixture and Potassium Levels Applied as Spray or to Soil on Sunflower (Helianthus annuus L.)Yield and its Components". Journal of Plant Production, 11, 12, 2020, 1289-1294. doi: 10.21608/jpp.2020.149799
Hemeid, M., EL-Tabbakh, S. (2020). 'Effect of Nutrient Mixture and Potassium Levels Applied as Spray or to Soil on Sunflower (Helianthus annuus L.)Yield and its Components', Journal of Plant Production, 11(12), pp. 1289-1294. doi: 10.21608/jpp.2020.149799
Hemeid, M., EL-Tabbakh, S. Effect of Nutrient Mixture and Potassium Levels Applied as Spray or to Soil on Sunflower (Helianthus annuus L.)Yield and its Components. Journal of Plant Production, 2020; 11(12): 1289-1294. doi: 10.21608/jpp.2020.149799
Effect of Nutrient Mixture and Potassium Levels Applied as Spray or to Soil on Sunflower (Helianthus annuus L.)Yield and its Components
Department of Crop Science, Faculty of Agriculture, Alexandria University, Alexandria, Egypt.
Abstract
This study was carried out in 2017 and 2018 seasons to investigate effect of nutrient mixture and potassium levels applied as spray or to soil on sunflower yield and its components using split-plot design with four replicates. Main plot treatments were: K1 (control) without K, K2: 57 kg K2O/ ha, K3: 114 kg K2O/ ha (K1, K2 and K3 as soil application), K4 (control): spraying with tap water, K5: 0.58 kg K2O/ ha and K6: 1.16 kg K2O/ ha (K4, K5 and K6 as foliar application). Sub-plot treatments were 0, 1 and 2 liters of nutrients mixture per hectare. K5 treatment produced the heaviest heads(132.0g),highest seed weight/ head(69.98g)in the first season and highest oil (41.33%) without significant differences with potassium soil application treatments in that season. (K6) produced the thickest stems(2.28 and 2.31cm)in both seasons, largest head (20.54cm), heaviest heads (122.49g), highest shelling (52.81%) and heaviest 100-seed weight (8.26g) in the second season, whereas (K5 and K6) treatments gave the heaviest seed weight/ head (60.99 and 64.70 g), and highest shelling (53.03 and 53.02%) in the first season and seed yield/ ha (3.35 and 3.55ton) in the second season. Foliar application of nutrients mixture significantly increased all the studied treatments, except head diameter in 2017, stem diameter, 100-seed weight and oil percent in 2018 season. Interaction had significant effect on plant height, head weight, shelling % and harvest index in both seasons. K5 and/ or K6 combined with nutrient mixture foliar application, generally, increased the aforementioned traits under Alexandria Governorate.
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