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The Suitability of Different Winter and Spring Wheat Varieties for Cultivation in Organic Farming
http://dx.doi.org/10.5772/58351
first stages of growth was Tonacja, while at dough stage Kobra Plus characterized with
significantly the smallest stem length (85 cm on average) (Figure 1). In both of these varieties
high level of infestation was indicated (Table 6). Among the varieties of common wheat Smuga
was the highest in all phases of development and it was the most competitive against weeds.
Number of weeds (plants·m -2 )
Dry matter of weeds (g·m -2 )
Cultivar (A)
Years (B)
Years (B)
2008
2009
2010
mean
2008
2009
2010
mean
Kobra Plus
45.0
147.5
117.5
103.3
42.8
188.3
225.7
152.3
Bogatka
57.0
87.5
114.0
86.2
45.6
184.2
344.5
191.4
Smuga
61.0
79.5
101.0
80.5
29.7
104.8
169.3
101.3
Tonacja
43.0
156.5
132.5
110.7
18.3
84.2
293.5
132.0
Ostka Strzelecka
64.5
73.0
81.0
72.8
42.3
91.0
291.1
141.5
Spelt
67.0
91.0
68.5
75.5
30.0
114.9
224.0
123.0
Mean
56.3
105.8
102.4
88.2
34.8
127.9
258.0
140.2
HSD (α=0.05) for:
A - 34.9, B - 20.1, interaction AB - 57.8
A - 63.9, B - 36.9, interaction AB - 106.1
Table 6. Number and dry mater of weeds in winter wheat cultivated in organic system as determined at dough stage
Number of weeds (plants·m -2 )
Weeds dry matter (g·m -2 )
Cultivar (A)
Years (B)
Years (B)
2008
2009
2010
mean
2008
2009
2010
mean
Kobra Plus
3.0
5.0
1.0
3.0
1.2
3.8
0.8
1.9
Bogatka
2.5
4.5
0
2.3
3.9
1.2
0
1.7
Rywalka
4.5
4.0
6.0
4.8
10.0
2.1
0.6
4.2
Legenda
1.0
3.5
1.0
1.8
0.4
0.6
0.1
0.4
Mean
2.8
4.3
2.0
3.0
3.9
1.9
0.4
2.1
HSD (α=0.05) for:
A - ns*, B - ns, interaction AB - ns
A - ns, B - ns, interaction AB - ns
* ns - non significant differences
Table 7. Number and dry mater of weeds in winter wheat cultivated in conventional system as determined at dough
stage
 
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