. Cyclopedia of farm crops. Farm produce; Agriculture. 132 SEEDING, PLANTING AND YIELDS tables usually represent extreme average longevity. The vigor of the seed—as expressed in crop-pro. ducing power—may decline long before it ceases to retain life. Fresh seed is therefore safest; although certain seeds of the melon family are said to produce better crops when a year old. Longevity of Certain Seeds. The asterisk (*) denotes that the seeds had not all lost their germinating power at the termination of the number of years recorded. Average years Barley 3 Bean 3 Beets 6 Buckwheat 2 Cabbage 5 Car
. Cyclopedia of farm crops. Farm produce; Agriculture. 132 SEEDING, PLANTING AND YIELDS tables usually represent extreme average longevity. The vigor of the seed—as expressed in crop-pro. ducing power—may decline long before it ceases to retain life. Fresh seed is therefore safest; although certain seeds of the melon family are said to produce better crops when a year old. Longevity of Certain Seeds. The asterisk (*) denotes that the seeds had not all lost their germinating power at the termination of the number of years recorded. Average years Barley 3 Bean 3 Beets 6 Buckwheat 2 Cabbage 5 Carrot, with the spines . . 4 or 5 Carrot, without the spines . 4 or 5 Chicory 8 Chick-pea 3 Clover 3 Flax 2 Hop 2 Lentil 4 Maize 2 Millet 2 Extreme years 8 10 10 10* 10* 10* 8 Mustard . . Oats . . Orchard-grass Parsnip . . Peanut . . Peas . . Pumpkin . . Rape . . Rye . . Soybean . . Squash . . Timothy . . Turnip . . Wheat . . Average Extreme years years 3 10 3 2 2 4 1 1 3 8 5 9 5 2 2 6 6 10* 2 5 10* 2 7* Haberlandt's Figures of Longevity (Quoted in Johnson's "How Crops Grow"). Percentage of seeds that germinated in 1861 from the years 1830 1851 1854 1855 1857 1858 1859 1860 Barley 0 0 24 0 48 33 92 89 Maize 0 not tried 76 56 not tried 77 100 97 Oats 60 0 56 48 72 32 80 96 Rye 0 0 0 0 0 0 48 100 Wheat 0 0 8 4 73 60 84 96 Experience and experiment have determined certain seed standards. The following standards of purity and germination in seeds are recommended by the Department of Agriculture: " The term purity, the percentage of which is reckoned by weight, denotes freedom from foreign matter, such as chaff, dirt, or seeds of other plants, but it has no reference to the genuineness of the variety, which is called by seedsmen purity of stock. The percentage of germination is reckoned by count from a sample freed from foreign matter, a seed •^-o^ being considered as having germinated when the rootlet, or radicle, has pushed through the seed-coat. It is not to be
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