Yield and natural pollinators of the arctic bramble
1998
Karp, K. | Starast, M. (Estonian Agricultural University, Tartu (Estonia). Dept. of Horticulture)
The experiment was established in spring 1995. 'Pima' was chosen to be a control cultivar. The following cultivars and forms were used in the experiment: 'Pima', 004, 033,Kaansoo, 077, 'Mespi', 039, 'Astra' and 'Aura'. Under the name 'Kaansoo' is tested Estonian natural arctic bramble. The arctic bramble starts to bear fruit in the second year of growth. The harvesting period for the arctic bramble begins at the start of July and the last berries ripen in september. The average total yield in 1996 was 20...99 g m sup(-2) and in 1997 90...835 g m sup(-2). The most common damaging factor is the mildew. This mildew infects the leaves, and fruits of the arctic bramble. Not one preparation has yet been approved to overcome fungal disease altough research on this field has begun. The arctic bramble is self-sterile and therefore is very important to provide best possible conditions for pollination. The main pollinators of the arctic bramble were bees. At the same time bumble bees preferred other plants. To increase a number of pollinators it is important to cut the grass around plantation
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