How to grow Delphinium with Haifa Fertilizers

Fertilization of delphinium in greenhouse soilless growing conditions

Our complete fertilization recommendation for growing beautiful delphiniums

Growing conditions: Greenhouse, soilless.
Growing medium: scoria, crushed to about ¼ inch diameter, or pumice of a similar size to be an ideal growing medium.
Water time obviously varies from day to day and season to season, according to the plant's needs. It should be noted that, in order to keep salts to a level which delphinium will tolerate (relatively low) it is necessary to flush the plants with water for about half an hour at least once a week.

The recipe is for fertilizers to be mixed into a 20,000 liter tank and watered out as is. No dilution is required. Fertigation being applied until the trays in which the delphinium plants were growing were saturated, and water began to seep out of the drain holes in the trays.

Summer feed

Fertilizer per 20,000 litres	Total	N	P	K	S	Mg	Ca
Multi-K 13-0-46	3 kg	0.39		1.38
Pot. Sulphate	1 kg			0.50	0.23
Cal. Nit. 15.5 - (19%C)	15 kg	2.33					2.85
Ammonium. Nit. 34.5 %	4 kg	1.38
Magnesium Sulphate	1 kg					0.50
Magnisal 11.0.0.15	2 kg	0.22				0.30
Multi-Keep 0-52-34	3 kg		1.53	0.99
Iron Chelate	450 gm
Borax	20 gm
Zinc. Sulphate	10 gm
Manganese. Sulphate	10 gm
Sodium. Molibdate	0.7 gm
Copper. Sulphate	0.5 gm
Total	Total	4.32	1.53	2.87	0.23	0.80	2.85
	Ratio	2.82	1	1.88	0.15	0.52	1.86
	ppm	216	77	144	12	40	143

Water feed

Fertilizer per 20,000 litres	Total	N	P	K	S	Mg	Ca
Multi-K 13-0-46	3 kg	0.39		1.38
Pot. Sulphate	1.5 kg			0.75	0.35
Cal. Nit. 15.5 - (19%C)	14 kg	2.17					2.85
Ammonium. Nit. 34.5 %	1 kg	0.35
Magnesium Sulphate	1 kg					0.50
Magnisal 11.0.0.15	0 kg	0.00				0.00
Multi-Keep 0-52-34			1.02	0.66
Iron Chelate
Borax
Zinc. Sulphate
Manganese. Sulphate
Sodium. Molibdate
Copper. Sulphate
Total	Total	2.91	1.02	2.79	0.35	0.50	2.85
	Ratio	2.85	1	2.74	0.34	0.49
	ppm	145	51	140	17	25