SCANDINAVIAN SEED-CONTROL STATIONS. 13 



These results corroborate those obtained by Stebler, who recommends 

 on the average 19°, not higher than '26°, but where it is possible not 

 below 15°. 



TA(fS FOR SEED IN BAGS. 



A number of Swedish and Finnish control stations offer seedsmen an 

 opportunity to guarantee the quality of their goods by furnishing tags 

 for seed in bags which upon analysis has been found to come up to a 

 certain standard. If a quantity of seed analyzed does not come up to 

 the standard it can not be sold with station tags. The standards refer 

 to the percentages of pure germinated seed in the goods, and are as 

 follows : 



Minimum pure germinated seed for good* supplied with control tags. 



Per cent. 



(1) Cereals (straw and grain crops) 90 



(2) Fodder plants: 



Red clover 80 



White clover, alsike clover, rnedick, kidney vetch 75 



Brome grass (Bromus arvensis and B. mollis), meadow 



fescue, timothy, ryegrass (Lolium italicum and L.pratense) 80 



Orchard grass, tall oat grass 65 



Hard fescue, red fescue, sheep's fescue 60 



Crested dog's tail, florin grass 55 



Reed canary grass, Aira ccespltosa, A. flexuosa, yellow oat 



grass, sweet vernal grass, meadow foxtail 40 



Velvet grass 35 



Meadow grass ( Poa spp. ) 30 



(3y Various crops: 



Rape (Brassica spp.) 95 



Spurry (Spergula satira and S. maxima), mustard 90 



(4) Root crops: 



Mangel-wurzels, ruta-bagas 95 



Beets 85 



Carrots 55 



(5) Tree seed : Conifers 70 



The tags furnished give the main results of the analyses as follows: 

 Name of seed, dry weight of 1,000 seeds, percentage of pure viable seed, 

 hard seed, dead seed, chaff', dirt, etc., seed of other cultivated plants, 

 weed seed, number of noxious weed seed per kilogram of sample, 

 name of station, date, etc. 



The Finnish stations, in addition to information similar to that given 

 above (in Swedish and Finnish), give on the reverse of the tag the num- 

 ber of each of the following noxious weed seed found in 1 kg. of the seed, 

 the names of the weed seeds being given in Latin, Swedish, and Finnish : 

 Agrostemma githago, Agrostis spica venti, Rumex crispus, /•'. domestica, 

 Thlaspi ar reuse, Barbarea vulgaris, Guscuta trifolii, Anthemis tinctoria, 

 Matricaria inodora, Cirsium arvensis, Centaurea cyanus, Chrysanthemum 

 leucanthemum, Bromus secalinus, Raphanus raphanistrum, Brassica cam- 

 pestris, Sinapis arvensis, Bunias orientalis, Sonchus arvensis, and Clavi- 

 ceps purpurea. 



