Goulding Chemicals - Recommendations : : Root Crops

The recommendations in this section are using the RoI fertiliser classification system and are based on Teagasc research. Due to slight differences between the RoI and NI classification systems, these recommendations are only a guide for Northern Ireland farmers. They can be converted between the RoI and NI classification systems using this CONVERSION TABLE

Before choosing your fertiliser products please consult your local advisor to ensure that you do not exceed the limits for your farm as determined by the nitrates directive (SI no 378) of 2006.

Table 42. Nutrient Requirements (units/acre)
Index	N	P	K
1 Very Low	156	56	256+80Mg
2 Low	124	44	192
3 Medium	96	32	128
4 High	64	16	64

	-	These recommendations are for sandy loams with approximately 160 mm of rainfall after falling between April-June. If the soil is a loam, decrease Nitrogen (N) rates by 30 units.
	-	It is advised to apply up to 100 units N/acre into the seedbed.
	-	All Phosphorus (P) and Potassium (K) requirements should be incorporated into the seedbed.

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Fertiliser Recommendation

Table 43. Application Rate (bags/acre)
Index	K1 Very Low	K2 Low	K3 Medium	K4 High
P1 Very Low	11x(8-5-18+B) + 1¼ x (Muriate of Potash 50%)	11x(8-5-18+B)	7 x (8-5-18+B) + 1¼ x (16% Superphos)	4 x (6-10-18+B) + 1 x (16% Superphos)
P2 Low	8¾ x (8-5-18+B) + 2 x (Muriate of Potash 50%)	8¾ x (8-5-18+B) + 2 x (Muriate of Potash 50%)	5½ x (8-5-18+B) + 1½ x (0-7-30)	3½ x (6-10-18+B) + 2 x (Classic NP)
P3 Medium	6 x (8-5-18+B) + 3 x (Muriate of Potash 50%)	6 x (8-5-18+B) + 1¾ x (Muriate of Potash 50%)	6 x (8-5-18+B) + 1½ x (Classic NK)	3 x (6-10-18+B) + 1½ x (Classic NK)
P4 High	3 x (8-5-18+B) + 4 x (Muriate of Potash 50%)	3 x (8-5-18+B) + 2¾ x (Muriate of Potash 50%)	3 x (8-5-18+B) + 1½ x (Muriate of Potash 50%)	3½ x (8-5-18+B)

Top Dressing

Sweetgrass: 23% Nitrogen (N) + 2% Sulphur (S) + 1.2% Magnesium (Mg) + 5% Sodium (Na). This should be used for top dressing the beet as an alternative to ordinary Nitrogen. The two-fold benefit of the combination of Nitrogen along with the Sulphur, Magnesium and Sodium make it a perfect option for beet.

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