Insetnavorsing en -ontwikkeling
Inputs research and development
52
Tabel 5
toon ‘n opsomming van die ontleding vir die kunsmismoniteringsprojek oor die afgelope sewe
jaar. Vir N (stikstof) was daar geen afwykings in 2012/2013 nie, vergeleke met 6% in 2011/2012.
Die persentasie monsters P (fosfaat) wat die voorgeskrewe regulasies oorskry het, was 12% in die
2012/2013-produksieseisoen, vergeleke met geen afwykings in 2011/2012 nie en vir K (kalium) was
daar ‘n 14%-afwyking in 2012/2013, vergeleke met geen afwykings in die vorige twee seisoene nie.
Die resultate is aan die individuele kunsmismaatskappye verskaf.
Quality of fertiliser and agricultural lime
The Production/Input Working Group of Grain SA collaborates with the Fertiliser Society of South Africa
and the Agricultural Research Council-Grain Crops Institute (ARC-GCI) in monitoring the quality of
commercially available fertiliser products every season. The results of the 2012/2013 monitoring season
have been received and the report has been finalised. The results were published in the July 2013
publication of the
SA Graan/Grain
.
Results of the 2012/2013 monitoring season
A total of 36 samples from different fertiliser types were taken during the 2012/2013 production season.
Of these fertilisers, 24 were bulk blends, six were in liquid form and six were chemically mixed. Some of
the samples, which were analysed at three laboratories, showed that the content of N, P and K (nitrogen,
phosphate and potassium) did not comply with the specifications. The permissible deviations in terms of
plant nutrient content, as prescribed by the regulations in Act No. 36 of 1947, were exceeded.
Table 5
shows a summary of the analysis for the fertiliser monitoring project for the last seven years.
For N (nitrogen) there were zero deviations in 2012/2013 compared to the 6% in 2011/2012. The
percentage samples of P (phosphate) that exceeded the prescribed regulations were 12% in the
2012/2013 production season compared to zero deviations in 2011/2012 and for K (potassium) there
was a 14% deviation in 2012/2013 compared to zero deviations for the two seasons before that.
The results have been shared with the fertiliser companies individually.
The fertiliser industry (continued)
Jaar
N
P
K
Hoeveel-
heid
# oor
% oor
Hoeveel-
heid
# oor
% oor
Hoeveel-
heid
# oor
% oor
06/07
49
3 (6%)
-20
48
4 (8%)
-15
36
4 (11%)
-12
07/08
50
5 (10%)
-14,7
46
1 (2%)
-8,3
34
4 (12%)
-19,9
08/09
48
3 (6%)
-9,8
49
5 (10%)
-15,6
41
4 (10%)
-15,4
09/10
44
3 (7%)
-11,1
42
7 (17%)
-38,7
28
3 (11%)
-40,6
10/11
44
2 (5%)
-24,3
44
2 (5%)
-17,4
35
-
-
11/12
35
2 (6%)
-10,1
33
-
-
31
-
-
12/13
36
-
-
34
4 (12%)
-34
29
4 (14%)
-46
Tabel 5: Ontleding van kunsmismonsters.
Tabelaantekeninge:
Hoeveelheid  Die getal kunsmismonsters geneem.
# oor      Die getal wat die toelaatbare afwyking oorskry het.
% oor     Die monster wat die toelaatbare afwyking die meeste oorskry het.
Die kunsmisbedryf (vervolg)
Die kwaliteit van kunsmis het die afgelope 12 jaar merkwaardig verbeter. Daar word geglo dat
hierdie kunsmismoniteringsprojek tot hierdie verbeterde resultate bygedra het. Die resultate en die
persentasie N, P en K wat die voorgeskrewe regulasies oor die afgelope 12 jaar oorskry het, word in
Grafiek 4
tot
6
verskaf.
A total of 36 samples
from different
fertiliser types
were taken during
the 2012/2013
production season.
1...,44,45,46,47,48,49,50,51,52,53 55,56,57,58,59,60,61,62,63,64,...168