Remember: this is only a guide and requirements & nutrient value may differ depending on specific situations.
Step 3 - Choose your main fertiliser
Dependent on organic manure usage.
Example: Planning on applying 18m3/Ha of FYM in late spring and incorporating within 24 hours giving.
N P
K MgO SO 3
4
34 169 32
11
N, P, K requirements derived from the RB209 (Fertiliser Manual) and the MgO & SO3 requirements adapted from industry recommendations in PDA booklet (Potash Development Association).
Step 4 - Choose your final fertiliser
Example: Looking at final requirements, a top up dressing of nitrogen should be applied no later than 3 leaf stage after weed control. DS+ 24N - 14SO3 applied @ 288Kg/Ha will supply the reaming.
N P
K MgO SO 3
40
0
0
69
0
13
12
Step 5 - Actual nutrients applied
Step 1 - Decide on your yield potential
Example: (SNS1, P1, K2-, Mg2) Working on an everage of 40 t/Ha the maize crop requires.
N P
K MgO SO 3
67
100 85 175 35
N P
K MgO SO 3
30
100 85 175 30
Following this process carefully will ensure you get the most out of your maize crop and adhere to the legislation regarding organic manures and nitrogen applications.
Step 2 - Choose your starter fertiliser
The illustration charts are for guideance only and all compliance with current legislation is the responsibility of the farmer/grower.
Example: Phosphate D 12.5N-32P-4K+MgO+5CaO_14.5SO3 Blend down the spout @ 160Kg/Ha will apply.
N P
K MgO SO 3
23
6
51
20
3
BARTHOLOMEWS
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