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On the basis of conducted experiments on the rooting of dawn redwood cuttings it was found that the application of Seradix B No 1 mixed with Kaptan Zawiesinowy 50 (1:1, v:v) increased the number of rooted cuttings by 14.5% in comparison to the control. Moreover, an advantageous effect of the growth stimulator was observed on the number of secondary roots on a cutting. However, the application of a...
A field experiment was conducted in the years 2003-2004 on a field of 10-years’ soybean monoculture, with naturally accumulated infection material in the soil. Soybean of ‘Mazovia’ was the object of studies. Before the sowing the seeds were dressed, and at the beginning of anthesis the plants were sprayed with biopreparations Polyversum, Biosept 33 SL and Biochikol 020 PC. The experiment considered...
A field experiment was conducted in central-eastern Poland in the years 1999-2003. It analyzed the effect of catch crop green fertilizers on soil humidity in a three-year-long crop vegetable rotation (white cabbage, onion, red beet). Oats, field pea and spring vetch cultivated in pure sowing and as mixtures were used as green fertilizers. The effect of green manures was compared with ploughed in farmland...
A field experiment was conducted in the years 2000-2003. The corms of Sparaxis tricolor were planted in spring at the following dates: 20.04, 29.04, 10.05 and 20.05 at 3 depths of planting: 4, 6 and 8 cm. The greatest number of inflorescence stalks growing from 1 corm was obtained planting Sparaxis at the earliest of the studied dates. The length of the main shoot, the length of the spike, the number...
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