The Effect of Spraying with Spirulina Extract and Microelements on the Growth and Yield of Cucumbers

Algae extracts are an excellent source of chemical fertilizers (NPK) and plant growth promoters such as auxins, cytokinins, betaine, gibberellins, amino acids, macronutrients, microelements, organic matter that improve productivity. The investigation was performed at 2019-2020 through winter seasons, in sandy soil Ismailia Agricultural Research Station greenhouse. To investigate the impact numerous levels spraying spirulina extract (after being diluted with half its volume water) combined or without microelements on vegetative development cucumber yield (Cucumis sativus L.) Rocket cultivar. experiment involved 7 different treatments (control, foliar fertilization by 5 ml, 10 15 ml extract/L water concentrated 2 ml/L. Spraying after weeks planting three times days intervals. repetitions using a complete block randomized design (CBRD), averages were compared test Duncan's 0.05 level. mL achieved highest height, main branches number, number leaves, leaf area, length fruit, fruit diameter, stems leaves fresh weight, dry chlorophyll content and, NPK during two seasons. While recorded terms (1.27 1.31 kg), experimental plot (25.59 26.25 total per fed. (10.74 11.02 tons) incorporated respectively. results show higher concentrations activate growth, while concentration above reduces resulting yield.