thing appeared. In most of these places the growtn 

 was very heavy, much of it six feet tall. I would 

 guess that in such places it would yield three or four 

 tons per acre of the dried plant. In nitrogen con- 

 tent I find that it stands with alfalfa and the vetches. 

 I discover that it not only furnishes a rich field 

 for bees, but that horses are fond of its leaves and 

 branches. I have wondered why we could not make 

 a green-manure crop of it. Doubtless we would be 

 compelled to plow it in long before it reached its full 

 growth. It seems to me that there are great possi- 

 bilities in it. 



in the summer of 1905 I made this test: Taking the 

 hint from Prof. Hopkins, after sowing my fourth field 

 01 alfalfa I sowed a strip a rod wide across the center 

 of the field with soil taken from a sweet-clover patch, 

 at the rate of 400 or 500 pounds per acre. This strip 

 was a fair sample of the rest of the field, which was 

 not inoculated. Last summer I cut more than twice 

 the hay from this strip that came from a similar area 

 on either side of it, and far more nodules were found 

 on the roots. It looks very much as though its 

 bacteria were identical with those of alfalfa, as Prof. 

 Hopkins claims. If that be a fact, then a good prepa- 

 ration for an alfalfa crop would be the production 

 of a sweet-clover crop, plowing it in during the fall 

 and sowing alfalfa the next spring. If any have ex- 

 perimented with this plant there are a whole lot of 

 us wno would like to hear from them. And if you 

 have not, why don't you? I. A. THAYEB. 



Pennsylvania, April 20, 1907. 



SWEET-CLOVER NOTE. 



On page 338 there is inquiry about sweet clover. 

 It is considered a weed here, taking possession of the 

 roads, but it is very little trouble in cultivated fields, 

 as it is nearly as easy to exterminate by cultivation 

 as red clover, unless you have some low-lying land 

 where the seed is washed on from higher ground 

 not cultivated. It is a very prolific seeder, more so 

 than any other clover I know of, and I should not 

 wonder if, under favorable conditions, it would yield 



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