Archive image from page 106 of Descriptive catalog of vegetables (1949). Descriptive catalog of vegetables . descriptivecatal1949asso Year: 1949 The Asgrow Germination and Analytical Laboratory (continued) A second function of a seed laboratory is to determine the purity of seed stocks. This is accomplished by computing freedom from dirt, chaff, other crop seeds, and weed seeds. If weed seeds or other crop seeds are present, it is necessary to identify them accurately and to report if any noxious weeds are present. A third function of a seed laboratory is to determine if seed may be contamina
Archive image from page 106 of Descriptive catalog of vegetables (1949). Descriptive catalog of vegetables . descriptivecatal1949asso Year: 1949 The Asgrow Germination and Analytical Laboratory (continued) A second function of a seed laboratory is to determine the purity of seed stocks. This is accomplished by computing freedom from dirt, chaff, other crop seeds, and weed seeds. If weed seeds or other crop seeds are present, it is necessary to identify them accurately and to report if any noxious weeds are present. A third function of a seed laboratory is to determine if seed may be contaminated either internally or externally with bacterial or fungous organisms that are pathogenic to the seed or the plants that are expected to develop from the seed. The Asgrow germination and analytical laboratory at New Haven, Connecticut, is properly equipped and staffed to perform these functions efficiently and on a large scale. As we handle a large number of samples 'room' germinators are used. These rooms are sealed with 2' to 3' of cork; the temperature and humidity are accurately controlled by thermostats and humidostats; and they are lighted by fluorescent lamps. One room is capable of holding 3,000 samples in duplicate when tested by the blotter method, or 670 samples in sand test. The best equipment available is used in connection with the purity work — Binoculars, Iowa air blast separators, sieves, Boerner seed sampler, Chain-o-matic Balances, special Neon lighted work boards and counting plates. Complete and accurate records are made and kept of all operations in the laboratory. These records are on permanent file, for ready reference. Purity and germination samples are retained in a systematic file, usually for at least one year after the receipt of the sample in the laboratory. A corner of the main Asgrow laboratory
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