From transplanting to growth stage: A fertilization program for basil

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Find out what is optimal combination of fertilizers that result in fragrant basil

I. While transplanting
Immerse the transplant plugs in a 2% solution of Poly-Feed 20-20-20 + M.E.

II. Fertigation for the establishment stage

Optimal nutrient concentrations in irrigation water (ppm)

N	P₂O₅	K₂O	CaO	MgO	Fe
100-110	70-90	100-120	110-140	60-75	0.8-1.2

Optimal combination of fertilizers in irrigation water (g/cubic meter)

Multi-K	MAP	Mg Sulfate	Calcium nitrate
240	130	420	470

Multi-K = 13-0-46
MAP = 12-61-0
Mg Sulfate = 0-0-0+16MgO
Calcium nitrate = 15.5-0-0+26.5CaO

III. Fertigation for main growth season (fertilizer analysis: 4-2-8 + M.E.)

Optimal nutrient concentrations in irrigation water (ppm)

Season	N	P₂O₅	K₂O
Autumn	90-100	45-50	180-200
Winter*	150	75	300
Spring	100-120	50-60	200-240

Optimal combination of fertilizers in irrigation water** (g/cubic meter)

Season	Multi-K	MAP	AN
Autumn	435	74	90
Winter*	650	111	135
Spring	505	85	105

*The increase in the required concentration is meant to compensate for the reduced water uptake.
** pH of the irrigation water should be maintained at 5.8-6.2.

Important note about irrigation: Basil is extremely sensitive to water-logging. The grower must avoid excessive irrigation, especially after foliage cuts.

Salinity sensitivity: Basil is moderately sensitive to high EC and to chloride. Appropriate steps must be taken to avoid salinity buildup and the use of KCl as a potassic fertilizer.

Some general growing instructions can be found here.

From transplanting to growth stage: A fertilization program for basil

Find out what is optimal combination of fertilizers that result in fragrant basil

Optimal nutrient concentrations in irrigation water (ppm)

Optimal combination of fertilizers in irrigation water (g/cubic meter)

III. Fertigation for main growth season (fertilizer analysis: 4-2-8 + M.E.)

Optimal combination of fertilizers in irrigation water** (g/cubic meter)

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