Show obtain maximum crop of potatoes reason for small average Is lack of attention given seed prepared by the united states department of 0 agriculture one of thu the reasons vily the average production of potatoes per ucro acro in tho 1110 united states Is lower than in canada omit tind and Luro european countries LI except italy says tho united status states Devarti nent of agriculture Is that les ecsi i attl attention ution has been given to the char actor of tho seed good seed Is one olio of tho the factors in ili the pro of maximum crops of botu potu toes improvement practices five ineth methods of improvement practices which way bo used in securing a hilgh idling mid and commercially deser ablo able strain of potatoes are outlined and discussed lu in a new bulletin just issued by the united states delai department I 1 of agriculture us Fur furthers li elul letin 1332 seed potatoes nud and how to IO produce duce thein by william stuart they tire the tuber unit met method hod hill section mass selection held field and strain testing for tile tho average grower mass selection and field g ng are better methods ns as neither I 1 involves n olves the growing and keeping sep birute of a lat largo go number of individual selections both are so BO simple that any kiy person of ordinary intelligence can practice them muss lass selection differs from hill selection in ili that the tubers tubera froia the 11 individually selected plants are not kept separate generally those who practice mass selection do not go to the trouble of marking promising individual plants during file growing season but simply go through tho the neld field before harvesting ajl lie whole crop and dig by those thos paints which show allow the desired vigor and stem stein characters which are glit to bo be correlated productiveness trueness to type and uniformity in size of tubers tubera of tile particular variety grown field plan held consists of removing the diseased weak off ott type typo or varl etal mixture plants during the growing season the ilie field from froin which the seed Is to be saved should be gone over in this manner at least three times during the growing season to insure tho the removal of till all plants affected with transferable diseases such as mosaic and leaf roll as soon as their presence can be detected in tile flold field method no attempt Is mado made to select the progeny of individual plants planta at harvesting time tile the whole crop being dug and all desirable seed stock gatli cred and stored in ili bulk the bulletin contains coni ains information on cultural practices harvesting and storing seed treatment and pre preparation parn and fertilization of tho the soil A copy of the bulletin may bo be obtained free of charge as long as tile lie supply lasts from the united department of agriculture washington |