June 1941] Agricultural Research in New Hampshire 21 



tray type was constructed, with a capacity of 200 pounds of green 

 material. The tests conducted were aimed at drying a maximum 

 amount of material in a minimum length of time, conforming, at the 

 same time, to the requirements of the United States Pharmacopoeia. 

 Temperatures in two general ranges, 80° to 140° F and above 

 140° F, were used, and various humidity levels between 30 and 70 

 per cent were tested. Forced air draft was accomplished by the 

 use of fans, air valves being used to control the volume and velocity 

 of the air currents. The time required to dry to the United States 

 Pharmacopoeia specifications varied from 30 to 60 hours for the 200 

 pounds of green material. 



(Bankhead-J ones Offset Fund) 



AGRONOMY 



A Study of Pasture Species Under New Hampshire Conditions (F. S. 

 Prince, P. T. Blood, and L. J. Higgins) 



Work was continued during the year on the selection and 

 breeding of timothy, red clover, and strains of white clover (Tre- 

 folium repens). Seeds and cuttings of these species were gathered 

 from old pastures which had been grazed for long periods, and the 

 plants were propagated in the greenhouse and nursery. Some of 

 these selections have been continued for several years in an attempt 

 to develop better strains for New Hampshire conditions. It is known 

 that some of the selections of red clover have a basic triennial habit, 

 and it is one of the objects of the experiment to cross these selected 

 red clover plants in an effort to develop a strong triennial or perennial 

 strain. A further aim of the project is to develop a Ladino-wild white 

 clover cross which possesses the height of the Ladino clover and 

 the hardiness and leanness, of the wild white clover. Work is also 

 progressing on the development of a late hay as well as a pasture 

 strain of timothy. 



Trial seedings of a great many species and strains of legumes 

 and grasses suited to pasturing were made in 1939 and 1940, the 

 trials consisting of simple mixtures, J.e. one grass and one legume, 

 and including both domestic and foreign strains. Counts at the close 

 of the 1940 season showed that Ladino clover, to a greater extent 

 than the other legumes, gained dominance over all the grasses with 

 which it was seeded (smooth brome, orchard grass, tall fescue, Swed- 

 ish perennial rye grass, and various strains of timothy). The grasses 

 which appeared most aggressive are orchard grass, Swedish perennial 

 rye grass, and Reed canary grass. 



(Bankhead-Jones Fund) 



An Experiment With Legumes on Neglected Hay Lands (F. S. 



Prince, P. T. Blood, T. G. Phillips, G. P. Percival, and P. N. 

 Scripture) 



This is the second year the Whenal alfalfa plots at Greenland 

 have been harvested under the scheme of fertilizing in which annual 

 fertilization is being compared with three times the annual amount 



