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Lot Number--Each lot of seed is uniquely numbered. This number appears on all documents so that it can be traced back to its origin. Purity--The percentage by weight of seed that is the named species. Crop--Percentage of seeds by weight that is other than the pure species labeled, but not considered weeds in your state. Crop seeds must by listed by name if over 5% of content. Inert--Percentage by weight of material that will not grow. Weed--Percentage of weeds in this lot. A list of problem weeds in your state is available upon request. Agricultural Marketing Number--Every seed company has an agricultural marketing number which must appear on their tags. Noxious Weeds--Those weeds defined by your state to be a problem or prohibited. Poa annua (often called annual bluegrass), which is undesirable in turf is considered a noxious weed in only a few states. Net weight--Identifies the net weight of the container. Test Date--Actual month and year this lot was tested for germination. Origin--State in which the seed was grown. Germination--The percentage of pure seed that will germinate in a controlled lab environment. In rust situations, a chemical test (TZ test) can be performed in 24 hours. The TZ test is over 95% accurate on turfgrass seed. Notes: Pure seed, other crop seed, inert matter and weed seed percentage should equal 100%. Each state's seed law may be slightly different as to how it asks seed to be labeled. The above example covers the basic labeling requirements. To determine pure live seed, multiply the pure seed % by the germination %. |
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