Seed Control: Its Aims, Methods and Benefits (Classic Reprint) - Softcover

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Excerpt from Seed Control: Its Aims, Methods and Benefits

On the other hand, Dr. J. C. Arthur, after conducting a test with various weed seeds at the New York Experiment Station in 1887, came to the conclusion that some species became incapable of germinating after being kept dry three or four months, and therefore he thinks that the danger of fouling land from sowing weed seeds with farm or garden seeds is not so great as commonly supposed. Seeds of Russian thistle, collected October 30, were tested in our laboratory the following May. After fourteen days but per cent had germinated. Seeds of the same Species one year and a half old failed to sprout at all during the same period.

The truth is that too little work has been done along this line to warrant any definite conclusions. There is a field for study here which is well worth the attention of those engaged in Seed Control. In general, however, it may be said that no seed should be sold which contains as high as five per cent of weed seeds.

In making reports on impurities, the European Seed Control Stations take into account the kind of weed seeds present in a sample. For example, in the Scandinavian Stations the follow ing, among others, are reckoned as bad weed seeds: cockle,chess, Canada thistle, dodder, wild mustard, sow thistle, creeping buttercup, wild chamomile. Such seeds, though they may be scarce in a sample, would readily spread throughout a field. In the case of dodder, Russian thistle, and some other weeds, no commercial seed is worth sowing if it contains a single seed of these species which is capable of germinating.

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