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Fertilizer Recommendation Tables - 2007 Revision

Author:	Keith Reid - Soil Fertility Specialist/OMAFRA
Creation Date:	October 2007
Last Reviewed:	October 2007

2007 Revision

Phosphorus Requirement Table - Vegetables on Mineral Soils

Phosphate (P₂0₅) Required - kg/ha
Soil phosphorus (0.5 M sodium bicarbonate extract) mg P L^-1 of soil (ppm P)	Snap bean, lima bean, field bean, soybean, pea, established ginseng	Radish	Sweet corn, established asparagus	Sugar Beet
0‑3	80 HR	80 HR	110 HR	150 HR
4‑5	60 HR	70 HR	100 HR	140 HR
6‑7	50 HR	60 HR	90 HR	140 HR
8‑9	40 HR	60 HR	70 HR	130 HR
10‑12	30 MR	50 MR	50 HR	130 MR
13‑15	20 MR	50 MR	20 MR	120 MR
16‑20	0 LR	40 LR	20 MR	100 LR
21‑25	0 LR	40 LR	20 LR	90 LR
26‑30	0 RR	30 LR	20 LR	70 RR
31‑40	0 RR	30 LR	0 RR	50 RR
41‑50	0 RR	20 LR	0 RR	30 RR
51‑60	0 RR	0 LR	0 RR	0 RR
61‑80	0 NR*	0 RR	0 NR*	0 NR*
80+	0 NR*	0 NR*	0 NR*	0 NR*

Phosphate (P₂0₅) Required - kg/ha
Soil phosphorus (0.5 M sodium bicarbonate extract) mg P L^-1 of soil (ppm P)	Rutabaga, beet, onion, spinach, lettuce, endive, garlic, chive, carrot, parsnip, horseradish	Potato, garden	Tomato**, cucumber, muskmelon, watermelon, pumpkin, squash	Celery, rhubarb	Broccoli*, brussels sprout , cabbage, cauliflower, pepper, eggplant* new or nursery planting of ginseng and asparagus
0‑3	180 HR	200 HR	230 HR	230 HR	270 HR
4‑5	170 HR	200 HR	230 HR	230 HR	260 HR
6‑7	170 HR	190 HR	220 HR	220 HR	250 HR
8‑9	160 HR	190 HR	220 HR	220 HR	240 HR
10‑12	160 HR	180 HR	210 HR	220 HR	230 HR
13‑15	150 HR	170 HR	190 HR	210 HR	220 HR
16‑20	140 HR	160 HR	170 HR	190 HR	200 HR
21‑25	120 MR	140 MR	140 MR	160 MR	170 HR
26‑30	100 MR	120 MR	110 MR	140 MR	140 MR
31‑40	80 MR	90 MR	80 MR	110 MR	110 MR
41‑50	50 LR	50 MR	50 MR	80 MR	80 MR
51‑60	30 LR	30 LR	30 LR	50 LR	50 LR
61‑80	0 RR	30 LR (0 RR)†	0 RR	0 RR	0 RR
80+	0 NR*	30 LR (0 NR*)†	0 NR*	0 NR*	0 NR*

*adding nutrients to soils with these levels of nutrients may reduce crop yields or quality by interfering with the uptake of other nutrients.

** For transplanted tomatoes, peppers and eggplant apply a starter solution high in phosphorus such as 10‑34‑0 at 1 L/100 L of water or 6‑24‑6 at 1 L/75 L of water at planting. Under high temperatures and on sandy soils, use half the concentration of fertilizer.

***For transplanted broccoli, brussels sprouts, cabbage and cauliflower, if no insecticide is used in the planting water, apply a starter solution high in nitrogen such as 20‑20‑20 at 1 kg/200 L of water. Under high temperatures and in dry sandy soils use half the concentration of fertilizer but do not reduce the volume of water.

�Garden in brackets.

HR, MR, LR, RR, and NR denote, respectively, high, medium, low, rare and no probabilities of profitable crop response to applied nutrient.

Approved: Ontario Soil Management Research and Services Committee (June 2007)

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