Acta fytotechnica et zootechnica, Vol. 4, 2001, Special Number ...

Acta fytotechnica et zootechnica, Vol. 4, 2001, Special Number
Proceedings of the International Scientific Conference on the Occasion of the 55 th Anniversary of the Slovak Agricultural
University in Nitra
Sugar beet was rationally fertilized. The average doses of industrial fertilizers are shown in the table 1.
The quantitative and qualitative parameters of sugar beet were followed at the 1 st - 3 rd variants. The qualitative parameters
roots were determined by the analytical methods.
The obtained results were evaluated statistically by the analysis of variance and are shown in the tables.
Results and discussion
The quantitative and qualitative parameters of sugar beet were dependent from different system of fertilization. The root yield
moved in the interval of 53,80 to 79,33 t.ha -1 (table 2). The root yield was statistically significantly dependent from variant of
fertilization, soil types and year of cultivation. On the fertilization variants were obtained significantly higher yield of roots over
from 9,34 to 9,78 t.ha -1 in comparison to control without fertilization. The positive influence of fertilization on the yield of sugar
beet was also pointed STRNAD (1995).
Significantly the highest yield were obtained in the 1996. In this year were best climatic conditions for cultivation of sugar
beet. The lowest yield of sugar beet were obtained in the 1998, when plenty of areas sugar beet were wet in the East
Slovakian Lowland.
The nutrition of sugar beet together with weather are factors significantly influence to technological quality roots. The
qualitative parameters roots of sugar beet (digestion, ash content, α-amino N, refined sugar yield) are shown in the table 3.
The digestion of sugar beet were moved in the range 14,50 – 20,20 %. Significantly higher digestion were obtained at the
2 nd and 3 rd variants.
Table 1 Average doses of fertilizers for sugar beet
EF
FEG
Variant of
fertilization
N - 1
kg.ha -1 N - 2
kg.ha -1
P
kg.ha -1
K
kg.ha -1 N - 1
kg.ha -1 N - 2
kg.ha -1
P
kg.ha -1
K
kg.ha -1
1 st 93,2 26,7 29,3 104,7 82,7 35,0 28,0 115,0
2 nd 44,5 30,0 33,7 113,0 40,0 33,3 47,4 116,7
3 rd - - - - - - - -
Where: N - 1 = fertilization before sowing, N - 2 = nutrition by foliar application
Table 2: Quantitative parameters of sugar beet (t.ha -1 )
Variant of
Root yield
Production of polarizing Production of refined sugar
Fertilization Year
sugar
EF FEG EF FEG EF FEG
1996 79,33 75,20 15,07 10,90 12,667 8,97
1 st
1997 70,19 65,50 12,07 11,14 10,270 9,31
1998 66,13 68,04 10,75 10,82 9,064 8,72
Average 71,88 69,58 12,63 10,95 10,67 9,00
1996 78,00 74,60 15,13 10,97 13,07 8,91
2 nd 1997 72,06 66,08 13,26 11,56 11,50 9,81
1998 68,70 67,54 11,23 11,08 9,30 9,10
Average 72,92 69,41 13,17 11,20 11,29 9,27
1996 70,15 64,80 14,17 10,17 12,48 8,60
3 rd 1997 64,30 53,80 10,93 9,58 9,23 8,04
1998 59,15 56,14 9,76 8,56 8,05 6,89
Average 64,53 58,25 11,62 9,44 9,92 7,84
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