AGRICULTURAL RESEARCH IN NEW HAMPSHIRE 45 



The purpose here is to develop a more leafy strain of white clove: 

 than that of Ladino, and one which may better stand close grazing. At 

 the same time it is desirable to retain the height characteristics of Ladino 

 and to have a form of clover that will compete with the tall grasses of 

 seeding mixtures. 



In addition to the breeding work that has been conducted in the 

 greenhouse with white clover, 16 of the Fj plants were caged during the 

 summer of 1942 and bees were introduced for open pollination. Seeds 

 produced from the plants so crossed have been saved and kept separate. 

 These will be planted in small plots, by families, in 1943, for observation 

 as to growth characters and other desirable or undesirable characteristics. 



II. Testing of Species and Strains 



A large number of strains of grasses from a variety of sources are be- 

 ing tested in the nursery. These include more than 100 duplicated rod 

 row plantings of timothy, orchard grass, perennial rye grass, fescues, Ken- 

 tucky bluegrass, smooth brome grass, and others. Among these are many 

 promising sorts. Particular attention was given to timothy, especiallv for 

 hay purposes. Of the timothies under test any one of the following was 

 superior in size, leafiness and \'ield, to the "commercial" crop which was 

 seeded for comparison: Alilton, Montcalm, S51, S48, Cb 213, Cb 224, 

 O.A.C. No. 1 intermediate, O.A.C. No. 1 hav tvpe. Hall's Stream (local), 

 Mountainview (local), Cornell 4059, F.C. 19578, F.C. 15167, F.C. 28116, 

 F.C. 28114, F.C. 28113, and F.C. 28111. 



Of orchard grass strains, the Welsh selections S26, S3 7 and Si 43 are 

 leafier, and later in heading than the others under trial. Avon, O.A.C. 

 No. 1 and CC180 are also desirable strains. 



The so-called creeping brome grass types (smooth brome) do not 

 creep much more in our climate than the non-creeping types. The 

 bromes have not been seeded as long as the timothies and orchard grass 

 strains, and it is probably unfair to draw conclusions in respect to them 

 at this time. This is also true of the other grasses. 



F. S. Prince, L. J. Higgins, P. T. Blood 



Eradication of Common Buttercup, Rammciihis acris, from Permanent 

 Pastures 



Plots have been laid out in three pastures in different parts of the 

 state: (1) At the Foss farm in Durham, (2) at the R. S. Lyons farm in 

 West Claremont, and (3) at the Roe MacDonald farm in North Haver- 

 hill. Areas selected for these plots were those of dense infestation and in 

 which a considerable degree of uniformity in weed content was evi- 

 denced. Square plots 10 feet on a side were selected as being of proper 

 size for treatment. Only substances of a non-toxic nature, or at least 

 those which leave no toxic residue, have been used thus far. In each pas- 

 ture three herbicides; borax, ammonium sulfamate, and Sinox have been 

 applied. Some plots have been cut periodically and others have been 

 treated with fertilizers in heavy concentrations. 



Borax was applied in concentrations varying from 4 pounds to Yz 

 pound per 100 square fe'et. Ammonium sulfamate was applied in dosages 

 varying from 1 pound to 1/32 pound per gallon of water on 100 square 



