ISHS Acta Horticulturae 172: Composts as Horticultural Substrates
PINE BARK COMPOST, PEAT AND BROWN COAL AS SUBSTRATES FOR GREENHOUSE TOMATOES |
| Authors: | J.R. Starck, W. Oswiecimski |
| Abstract:
The tomatoe variety Revermun was grown in polyvinyl chloride rings 16 cm in diametre and 18 cm height. The rings were filled with pine bark compost, aphagnum peat moss and brown coal and spaced out on mineral soil or on a 15-cm layer of the above mentioned substrates. During the growing period the soil samples were taken for analysis. Available N,P,K and Mg in mineral soil and in substrates were determined (0.03 N acetic acid extraction). The nutrient content in the soil and substrates was maintained at the level of about 300 mg N, 300 mg P, 800 mg K and 200 mg Mg per litre. The mean total and early yield of fruits was significantly lower when plants were grown on brown coal as compared with that on pine bark compost and peat. The difference between pine bark and peat was not significant. | |
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