Effect of perforated foil and polypropylene fibre covers on growth of early potato cultivars

https://doi.org/10.17221/379-PSECitation:Wadas W., Kosterna E., Kurowska A. (2009): Effect of perforated foil and polypropylene fibre covers on growth of early potato cultivars. Plant Soil Environ., 55: 33-41.
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This paper presents the results of a three-year research on the effect of perforated polyethylene foil and polypropylene fibre covers on the growth of early potato cultivars at various lengths of plant covering period (2 and 3 weeks after plant emergence). Plants grown under covers were higher, produced higher mass of above-ground parts, and were characterised by a smaller value of leaf weight ratio (LWR) and leaf area ratio (LAR) compared with the cultivation without covering. In the case of plant covering for 2 weeks after emergence the mass of leaves at the time of cover removal was on average almost 2 times higher and the mass of stems over 2.5 times higher than in the cultivation without covering; the values of LWR and LAR were however smaller by 0.094 and 0.137 m
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