Document Type : Original Article
Authors
1
Onion Res. Depart. , Field Crops Research Institute, Agric. Res. Center, Giza, Egypt
2
Vegetable Crops Depart., Fac. Agriculture, Sohag Univ., Egypt
Abstract
This study was conducted during the two growing seasons of 2013/2014 and 2014/2015 to investigate the effect of planting dates (15th August, 1st September and 15th September), NPK treatments (Control; 50, 15, 12 kg /fed NPK; 75, 30, 24 kg /fed NPK and 100, 45, 36 kg /fed NPK) and spraying with micronutrients (Control, spraying once and spraying twice) on onion productivity. The obtained results could be summarized as follow: 1- Planting on 15th September significantly increased plant height, number of leaves/plant, plant fresh weight, plant dry weight, total bulbs yield , bolters% and double bulbs%, in both seasons. 2- Application of the highest rates of NPK appeared significant higher records for plant height, number of leaves/plant, plant fresh weight, plant dry weight, total bulbs yield, bolters% and double bulbs%, while the control treatment appeared the lowest of these traits in both seasons. 3- Means of plant height, number of leaves/plant, plant fresh weight, plant dry weight and total bulbs yield were significantly increased by increasing times of spraying with micronutrients, while the control treatment gave the lowest values, in both seasons. It could be recommended that planting on 15th September, fertilizing with of 100+45+36 NPK kg/fed. and spraying twice with microelements to achive maximum yield and yield components.
Keywords
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