There has been a vast and numerous literature concerning seed longevity. Most of these works however has focused solely on theoretical and biological aspects of this problem. Some works although deal with practical problems of seed storage, vigour or deterioration, have had relatively little connection with agricultural crops, practical farming or gardening. Therefore, there has been a need to look at this problem from the seedman' s and farmer' s point of view. The paper comments on how long seeds of agricultural crops species can keep their longevity, how long it is economically reasonable to store them, the effect of the seeds chemical composition on their longevity, how seeds storage conditions can be modified in order to eventually improve their longevity and environment circumstances influence on the final seed longevity. The paper contains a synthetic summary of expected seed longevity of the most important agricultural species and many examples of long longevity of agricultural species.
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