Foliar fertilizer (inorganic) - Specification - KENYA STANDARD KS 2228:2020 - Punto Focal
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KENYA STANDARD KS 2228:2020
Foliar fertilizer (inorganic) — Specification
DRAFT KENYA STANDARD Fourth Edition
© KEBS 2020TECHNICAL COMMITTEE REPRESENTATION
The following organizations were represented on the Technical Committee:
:
Kenya Agricultural and livestock Research Organization (KALRO)
Government chemist
Mea Ltd
Amiran (K) Ltd
Chemagro Ltd.
Yara East Africa
Kenya Tea Development Agency.
Kenya Plant Health Inspectorate Services (KEPHIS)
Ministry of Agriculture, livestock and fisheries
Osho Chemicals Ltd
Elgon chemicals Ltd
Toyota Tshuso Fertilizers Africa
University of Nairobi-Department of plant science and crop protection
OCP Africa
ICL Fertilizers
Lachlan(K) Ltd
Wanda Agriculture
National Potato Council of Kenya
Kenya Industrial Research and Development Institute
Top serve East Africa
Elgon(K) Ltd
Kenya flower council
Kenya Chemical society
SGS(K) Ltd
BASF Chemicals
Twiga Chemicals
Sanergy Ltd
SABIC Ltd
SOCAA
Samsung C& T
Kenya Bureau of Standards — Secretariat
REVISION OF KENYA STANDARDS
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for improvements to published standards, addressed to the Managing Director, Kenya Bureau of Standards,
are welcome.
© Kenya Bureau of standards, 2020Copyright: Users are reminded that by virtue of Section 6 of the Copyright Act, Cap. 130 of the Laws of Kenya, copyright subsists in all
Kenya Standards and except as provided under Section 7 of this Act, no Kenya Standard may be reproduced, stored in a retrieval
system in any form or transmitted by any means without prior permission in writing from the Managing Director.
KENYA STANDARD KS 2228:2020
I
Foliar fertilizer (Inorganic)— SpecificationKENYA BUREAU OF STANDARDS (KEBS)
Head Office: P.O. Box 54974, Nairobi-00200, Tel.: (+254 020) 605490, 602350, Fax: (+254 020) 604031
E-Mail: info@kebs.org, Web:http://www.kebs.org
Coast Region Lake Region Rift Valley Region
P.O. Box 99376, Mombasa-80100 P.O. Box 2949, Kisumu-40100 P.O. Box 2138, Nakuru-20100
Tel.: (+254 041) 229563, 230939/40 Tel.: (+254 057) 23549, 22396 Tel.: (+254 051) 210553, 210555
Fax: (+254 041) 229448 Fax: (+254 057) 21814
Foreword
This Kenya Standard has been prepared by the Technical Committee on Fertilizers and
soil conditioners under the guidance of the standards projects committee and it is in
accordance with the procedures of the Kenya Bureau of standards.
Foliar fertilizers are formulated specifically for foliar feeding, optimizing nutrient uptake
through stomata (plant
pore in the leaves.
Their popularity has stemmed from the fact that they can be used as a shot gun measure
to correct short term nutrient deficiencies in plants. They also stimulate the plant to absorb
more nutrients from the soil.
Foliar feeds are formulated to cater for specific plant needs and mainly for specific stages
of crop growth.
This method of application is best suited for relatively low mobile elements such as
calcium and zinc, and the micronutrients. It also avoids the problems of nutrient
interactions and unfavourable soil pH which results in nutrient unavailability as may be the
case in soil applied fertilizers.
This standard has been prepared to encourage safe use of fertilizers, promote fair trade
practices and ensure safety of consumers.
During the Review of this standard, the guarantee of secondary and micro nutrients has
been specified and a tolerance for the primary elements (Nitrogen, phosphorous and
Potassium) given.KENYA STANDARD KS 2228:2020
Foliar fertilizer (inorganic) — Specification
1 Scope
This Kenya Standard specifies the requirements and prescribes methods of tests for
inorganic foliar fertilizers.
2 Terms and definitions.
For the purpose of this standard the definitions contained in KS ISO 8157:2015 Fertilizers-
vocabulary, shall apply
3. Description
The fertilizer shall be either a solid, homogenous liquid or a suspension concentrate
4 Requirements
4.1 Physical
The material shall be an aqueous solution or if in solid form it shall be fully soluble in
water.
4.2 Chemical
4.2.1 Nutrient guarantees
4.2.1.1 Where the primary nutrient (Nitrogen, phosphorous and potassium) are
guaranteed, the tolerance for the lower limit shall not vary by more than 0.7 units.
4.2.1.2 For the secondary and micro nutrient guarantee, inorganic foliar fertilizers shall
conform to the minimum limits for the following elements, if declared
Table 1 A — Minimum percentage for guarantee
SL NO Element %
i) Boron (B) 0.02
ii) Calcium (Ca) 1.00
iii) Cobalt (Co) 0.0005
iv) Copper (Cu) 0.05
v) Iron (Fe) 0.10
vi) Magnesium (Mg) 0.60
vii) Manganese (Mn) 0.05viii) Molybdenum (Mo) 0.0005
ix) Sulphur (S) 1.00
x) Zinc (Zn) 0.05
4.2.2. Foliar fertilizers shall comply with the following compositional limits
Table 1B- Characteristics for foliar fertilizer solutions
S/No. PARAMETER Limits/Range Test
method
i) Electrical Conductivity 0.1% solution, 10 ISO7888
mS/cm, 250C,Max
ii) pH(1% solution) 4.5-7.5 ISO 10523
4.3 Chelating compounds-
If chelating agents are used, they shall be stated
5.0 Heavy metal contaminants
The heavy metal contaminants, if present, shall not exceed the limits stipulated in Table 2.
Table 2 — Heavy metal contaminants limits
SL NO Parameter Limits in Test method
ppm
i) Arsenic, As, max. 20.0 ISO 17318
ii) Cadmium, Cd, max. 7.0 ISO 17318
iii) Mercury, Hg, max. 0.1 ISO 17318
iv) Selenium, Se, max. 1.0 ISO 17318
v) Lead, Pb, max. 30.0 ISO 17318
6 Packaging and labelling6.1 Packaging
6.1.1 The fertilizer shall be packaged in materials that ensure the product integrity and quality
against physical damage, chemical and moisture contamination.
6.1’2. the fill of the package shall comply with the weight and measures act CAP 513 of the
laws of Kenya
6.1.3 The disposal of used package and condemned fertilizer shall comply with EMCA 1999
no.8 of the disposal of solids and liquid wastes
6.2 Marking /Labelling
The following information shall be clearly and indelibly marked on each package.
a) Name, address and physical location of manufacturer/packer/importer;
b) Brand name of the fertilizer,
c) Type of the fertilizer i.e. inorganic foliar fertilizer ‘or ‘inorganic foliar feed’
d) guaranteed percentage by mass of each of the nutrients
e) name and percentage by mass of any other guaranteed element present;
f) date of manufacture, expiry date and batch/lot number;
g) the form in which nutrient is present;
h) Stage of crop growth to be applied.
i) name of the adjuvant or chelating material used in case of trace elements;
j) storage instructions
k) the net weight of the fertilizer in the package;
l) country of origin;
m) Instructions for use which should include but not limited to the following:
i) Not to be applied during periods of water stress unless when under irrigation
ii) To be applied during nutrition stress periods
iii) Recommended weather for spraying
iv) Application rates
v) Information on compatibility with fungicides, insecticides or herbicides as per pest
control products act, CAP 346 of the laws of Kenya.
7.0. Use of fertilizers in conjunction with pesticides.
Foliar fertilizer use together with pesticides shall comply with the Pest control products act
cap 346 of the laws of Kenya.
38.0 Certificate of analysis Each consignment shall be accompanied by a certificate of analysis. 9.0. Sampling This shall be carried out as outlined in the following standards: ISO 8633-Solid fertilizers -- Simple sampling method for small lots ISO 8634- Solid fertilizers -- Sampling plan for the evaluation of a large delivery
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