Table 4 Weight of rhizomes of Giant Miscanthus depending on planting time
and covering depth, g (average for years of 2016-2018)
Time period
of planting
Depth of covering,
cm
min
max
Number of buds,
pcs.
І
6
703,7
1406,2
158,6
9
776,4
1622,3
169,3
12
728,1
1533,5
152,4
ІІ
6
674,5
1329,4
153,8
9
682,1
1542,3
165,4
12
668,6
1432,5
150,8
ІІІ
6
585,6
1294,8
150,6
9
594,4
1488,4
151,4
12
572,8
1381,5
148,6
The weight of one rhizome showed the largest value of 776.7 g within minimum
index in the variant of the first planting time period with rhizomes' covering depth of
9 cm. In this variant, the maximum value of rhizomes' weight made up 1622.3 g. The
first period of planting at another depth of 6 cm showed a slightly lower weight of one
rhizome, as compared to previously analyzed variant, and amounted to minimum of
703.7 g and maximum of 1406.2 g. The number of buds was also the highest (169.3
pieces) in the first planting time period with rhizomes' covering depth of 9 cm.
The second investigated time period showed even lower values of one rhizome's
weight both for min and max indices, compared to the previously analyzed variant, but
the largest numbers were noted for the covering depth of rhizomes of 9 cm, and
comprised 682.1 g and 1542.3 g, respectively. The number of buds was only 165.4
pieces in the studied variant. Other variants of this time period with the covering depths
of 6 cm and 12 cm had slightly lower results.
In general, according to the experiment, the third period of planting (in May) was
marked by the smallest weight of rhizomes. The lowest and highest indices of rhizome
weight for the given planting period were observed at the covering depths of 9 cm, and
showed 594 g (min) and 1488,4 g (max) weight of Giant Miscanthus's rhizome.
During the time of conducted observations and records, the respective increase in
above-ground mass contributed to an increase in the growth of rhizome's weight, and,
accordingly, to an increase in planting material's yield - number of rhizomes.
Considering the analysis data, it was found that the yield of planting material, namely
large and small rhizomes, depended on both the planting time period and the depth of
their rhizomes' covering. It was established that there were received a larger number of
rhizomes during the first planting time period (namely for the covering depth of 9 cm),
compared to the second and third time periods of planting of the same covering depth's
variant.
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