PEAT IN CONVALLARIA GROWING
Encouraged by the results professor, Ph.D. PUUSTJARVI (1962, 1962a, 1965, 1965a, 1965b, 1966) obtained in his research work with peat as a growing substratum for greenhouse and field crops, peat was included in our experiments, preliminary results of which is given here.
The influence of growing medium in propagation of Convallaria, and production of pips for forcing was followed in a series of experiments, where there were four growing substrata: 1) sandy loam in good growing condition, 2) the same mulched with fertilized peat*; peat mulch was five cm thick, and it was spread on plots after planting, 3) fertilized peat, 4) peat basin, i.e. 20 cm thick layer of fertilized peat in a plastic film basin. The grade of decomposition of peat was peat mould. Race of