Folia Horticulturae

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The effect of multi-layer covering and mulching on the yield of sweet pepper grown in plastic tunnels

Piotr Siwek

Institute of Vegetables and Ornamental Plants
Faculty of Horticulture, Agricultural University
29 Listopada 54, 31-425 Kraków, Poland

In the years 1987 and 1988 the effect of multi-layer covering and mulching with plastic foil on some factors of the microclimate in tunnels and on the yields of the sweet pepper cultivar Albana was investigated. It was found that supplementary covers reduced the access of PAR (photosynthetic active radiation) by 20-30%. Double insulation of the tunnel increased the temperature of the soil in the early hours of the day on average by 1.9°C; a triple cover increased it by 2.9°C, while the minimum air tempperatures were raised by 1.4 and 3.4°C, respectively. The use of covers composed of several layers and mulches of milk-white polythene foil brought about an increase in early yield. The highest total yield was obtained in tunnels covered with one or two layers of foil and mulched.

Siwek P., 1992. The effect of multi-layer covering and mulching on the yield of sweet pepper grown in plastic tunnels. Folia Horticulturae IV/1: 71-82.