Intensive Culture of Vegetables On the French System With a Concise Monthly Cal
Intensive Culture of Vegetables On the French System With a Concise Monthly Cal
P Aquatias
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It is ab- solutely essential, therefore, that only new or " frank " spawn be used as a reproducer. Where Mushrooms are grown as market produce, the making of the spawn ought to constitute a branch of the work, to enable the grower not only to know the quality of the produce but, above all, to be certain of the health and vitality of the spawn. This system of reproduction is not the natural way of increasing the species ; it is analogous to propagation by means of layering, cuttings, or grafting... in the plants of a higher order. Natural propagation is by means of the spores. Of course, as long as the grower is able to get virgin spawn from the field or other medium he will not think of inserting spores. However, around Paris this method is useful in cases where genuine virgin spawn is becoming more and more difficult to obtain owing to the great demand there is for it. Moreover, even where such mycelium has been found, there is no proof that it is the produce of self-sown spores, or that it is the new growth of worn-out spawn left at the spot knowingly or acciden- tally by some interested party.
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