density, recovery from diseases, plant type, and the amount of 

 flowering", 

 (b) A greenhouse and field study of morphological characters associ- 

 ated with persistence. The characters studied in six widely dif- 

 ferent strains were: seedling root systems, date of initiation of 

 stolons, stolon number, stolon diameter, and petiole length. These 

 plants were transplanted to the field in an attempt to correlate 

 these characters with persistence. 



It is expected that progeny testing of selected plants in ladino clover 

 and bromegrass will be begun next year to determine their suitability as 

 parents for new varieties. Selection will be continued for brown leaf spot 

 resistance in bromegrass, and it is planned to begin artificial cold-tempera- 

 ture studies with ladino clover as an aid in selection for persistence and 

 winter hardiness. 



G. M. Dunn 



Irrigation Water and Nitrogen Fertilizer Can Be Wasted 



Highest yields of a soybean-Hungarian millet mixture were obtained 

 with one inch of water a week plus a top-dressing of 50 pounds of nitrogen 

 fertilizer. An additional inch of water and 50 pounds more of nitrogen did 

 not further increase yields. 



The experiment was carried out on a deep sandy soil adjacent to the 

 Merrimac River. Fertilization at time of seeding consisted of an application 

 of 740 pounds per acre of a 5-10-10 fertilizer. 



R. L. Donahue, P. T. Blood, S. A. Miller 



Lime Makes Potash More Efficient 



In northern New Hampshire, a ladino clover-bromegrass mixture 

 produced the most forage when the soil was treated with 2 tons of lime and 

 100 pounds of KoO applied in split applications. Responses in the southern 

 part of the state were similar. It is especially significant to note from this ex- 

 periment that at the higher levels of lime, it is not so important to apply 

 potash in split applications. It appears that lime makes potash available to 

 plants over a longer period of time. 



L. T. Kardos 



Birdsfoot Trefoil a Superior Legume on Soils of Low Fertility 



Birdsfoot trefoil on soils of low fertility persisted longer than did al- 

 falfa, ladino clover, or red clover. This was true both in southern and 

 northen New Hampshire. Three years after seeding in the northern part of 

 the state, both alfalfa and ladino clover comprised less than 5 percent of the 

 stand. By contrast, birdsfoot trefoil comprised 17 percent. 



On a droughty soil in southern New Hampshire, alfalfa averaged 2690 

 pounds of dry matter, birdsfoot trefoil 1930 pounds, and ladino clover 480 

 pounds per acre per year. 



L. T. Kardos 



Root Habits Can Be Changed 



Experiments indicate that ladino clover and alfalfa roots can be made 

 to use the deeper layers of the soil more fully. For example, by fertilizing 



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