Liquid Fertilizer Notes

Mixing

We recommend adding at least 20% water to all formulations. Some products, as marked in the list, require 40% to 70% water to be added to ensure adequate mixing.

The correct order of mixing is as follows:

  1. ‍ Water
  2. Chemical
  3. Adjuvant
  4. Liquid fertilizer

Agitation

Some of the chemicals used will separate from the liquid fertilizer if agitation is not adequate. Summit recommends that at least 300 litres per minute of bypass flow is used. Alternatively, a separate agitation pump should be fitted.

It is not recommended that the mix be left in tanks for extended periods with no agitation. Summit recommend the tank is emptied of all chemical before leaving. If this is not possible, thorough agitation before restarting is required, checking that adequate mixing has occurred.

Compatibility

The term ‘compatibility’ in this context refers to the ability of the chemical to physically mix with liquid fertilizer and be used through standard boom spray equipment. It does not mean that the efficacy of the chemical is not degraded.

There are many factors that may affect compatibility, including water temperature, pH, water hardness and impurities. At Summit, we have tested a wide range of active ingredients for compatibility, however, we have not tested every possible formulation.

If planning to use a formulation or brand that is not listed, make sure a suitable jar test is performed before committing to use that chemical with a liquid fertilizer. Similarly, if attempting to use a mix of chemicals, a jar test is strongly recommended.

Scorch

Scorch can occur when liquid fertilizers are used. Recovery from scorch is usually rapid (about 1 week). Factors that can influence the amount of scorch include: the addition of oils, product formulation, moisture on leaves, rainfall, temperature, rate of product and dilution, growth stage and growing conditions.

Please note:

  • These tests have been carried out under laboratory conditions so many factors may vary between these observations and practical use in the field.
  • MAXamFLO is gentler on the crop than UAN.
  • Liquid fertilizers do not replace adjuvants.
  • Do not put dissolvable bags into liquid fertilizer. You must pre-dissolve in water before adding to the tank, or open the bags and add chemical to the tank.
Formulation
Comments
DF
Dry Flowable
Dissolve thoroughly before adding liquid fertilizer
EC
Emulsifiable concentrate
Good agitation needs to be continuous
ME
Micro Emulsion
Good agitation needs to be continuous
SC
Suspension concentrate
Good agitation required. Jar test for MAXamFLO
SG
Soluble granules
Dissolve and don’t settle as they are in solution.
SL
Soluble liquid
Mixes well with liquid fertilizer. Good agitation required
WG (WDG)
Water Dispersible Granules
Mix in 20% water before adding liquid fertilizer. Will settle with no agitation.
Formulation
Comments
DF
Dry Flowable
Dissolve thoroughly before adding liquid fertilizer
EC
Emulsifiable concentrate
Good agitation needs to be continuous
ME
Micro Emulsion
Good agitation needs to be continuous
SC
Suspension concentrate
Good agitation required. Jar test for MAXamFLO
SG
Soluble granules
Dissolve and don’t settle as they are in solution.
SL
Soluble liquid
Mixes well with liquid fertilizer. Good agitation required
WG (WDG)
Water Dispersible Granules
Mix in 20% water before adding liquid fertilizer. Will settle with no agitation.

All formulations should be used with 20% water.

Comments
Incompatible. Difficulty spraying even under ideal conditions. Do not mix.
Needs constant and adequate agitation. 20% water recommended.
Mixes well. pre-mix chemical in water and maintain agitation. 20% water recommended.
Mixes well but requires extra water - use 40%+ water. Needs constant and adequate agitation.

Suggested Compatibility of Summit Fertilizers liquid fertilizers with some Agricultural chemicals

Analysis (%)
N(%)
S(%)
Bulk Density(t/m3)
UAN (w/w)
32
1.32 (kg/lt)
UAN (w/v)
42.2
0.76 (lts/kg)
MAXamFLO (w/w)
22
6.2
1.26 (kg/lt)
MAXamFLO (w/v)
27.7
7.8
0.79 (lts/kg)
Urea
UAN
MAXamFLO
UreaPlus
N Rate(kg/ha)
kg/ha
lts/ha
lts/ha
S(kg/ha)
(kg/ha)
S(kg/ha)
5
11
12
18
1.4
13
1.1
10
22
24
36
2.8
27
2.3
20
43
47
72
5.6
54
4.5
30
65
71
108
8.5
81
6.8
40
87
95
144
11.3
108
9.0
50
109
118
180
14.1
134
11.3
Conversions
Tonnes
Litres
UAN
MAXamFLO
10,000
13.2
12.6
15,000
19.8
18.9
20,000
26.4
25.2
25,000
33.0
31.5
30,000
39.6
37.8
40,000
52.8
50.4
50,000
66.0
63.0

MAXamFLO provides approximately 1kg sulphur for each 13 litres applied.