Potassium Nitrate - Van Iperen International

Van Iperen Potassium Nitrate Horticultural Grade is a highly pure Potassium fertilizer, which dissolve rapidly and completely. Our product is not sensitive to caking and is recommended during fruit or tuber development. The high level of Potassium plays an important role in achieving higher yields with optimal quality, and affects overall plant performance. Furthermore, the presence of Nitrate Nitrogen has a positive effect on the uptake of Potassium in the plant and is crucial during fruit sizing.

Improves fruit quality, shelf life and increases plant drought resistance
Developed for fertigation in open field and greenhouses. Also suitable for foliar application

Low on heavy metals
Low on Sodium and Chloride
Production process certified according to ISO 9001:2008
Easy to handle, dissolve and apply

Hydroponics

Kg in 1.000 l stock solution	K2O in kg	Total N in kg	N-NO3 in kg
100	46	13	13
150	69	19.5	19.5
200	92	26	26
250	115	32.5	32.5

Mentioned concentrations represents the amount of nutrients in the stock solution. The final concentration in the irrigation water depends on the amount of nutrients in the stock solution, the injection ratio and the amount of nutrients used in the water.

Fertigation

Crop	Application date	Min kg/ha/season	Max kg/ha/season
Fruit trees	• As of start of fertigation • Until 4 weeks before harvesting	150	400
Vegetables	• As of vegetative growth • Until 2 weeks before harvesting	100	300
Banana	• During entire fertigation program	200	500
Citrus (adult)	• During entire fertigation program	150	400
Potato	• As of tuber setting • Until tuber ripening	100	200
Tomato	• As of 4 weeks after planting • Until fruit ripening	150	300
Table grape	• As of start of fertigation • Until 4 weeks before harvesting	100	250
Vineyards (adult)	• As of start of fertigation • Until 4 weeks before harvesting	100	250

Foliar Application

Crop	Application date	Min kg / ha / appl	Max kg / ha / appl	Conc. % (w/v))
Vegetables	2 - 4 applications: • As of fruit setting • 10 - 14 days interval	4	8	0.5 - 1.0
Citrus	1 application: • During fruit filling	6	15	1.5 - 2.5
Banana	5 - 9 applications: • As of transplanting • Until fruit filling	6	15	1.0 - 2.0
Olive	3 - 4 applications: • Spring application • During vegetative growth • During fruit filling	8	18	1.5 - 2.5
Stone fruit	2 - 3 applications: • As of fruit setting • Until fruit colouring	5	10	1.0 - 1.5
Pip fruit	1 - 3 applications: • As of end of flowering • Until fruit filling	4	12	0.5 - 1.5

In case of foliar feeding as part of a mix with crop protection products, a compatibility test has to be done prior to preparing the spray-mix.

The mentioned indicated dosages and application stages are given as a guideline. Exact dosages, concentration and application stage are subject to local conditions, use of other fertilizers and can only be given after an objective diagnosis.