Soils 



The plot area of the experiment is shown in Figure 1. The soils of 

 the Paxton series are well draincMl and their relief ranges from level to 

 steep, with mild slopes predominating. They developed on deep, eom- 

 pact, platy till of Late Wiseonsin age derived mainly from mica schist, 

 gneiss, and granite. The Paxton soils, classified as Brown Padzolic. he- 

 long to the same catena as the moderately well-drained ^ oodhridge 

 soils, the poorly-drained Leicester and Ridgehury soils, and the very 

 poorly-drained Whitman soils. The Paxton soils range from strongly 

 acid to medium acid. Surface runoff is generally medium to slow. A com- 

 pact, platy suhstratum at 18 to 24 inch depth restricts the downward 

 movement of water. When the vipper layers of the soil are saturated, 

 water moves laterally ahove the compact layer and seeps out along the 

 lower slopes. Roots, water, and air penetrate the surface soil and suhsoil 

 readily. The soil has good tilth and responds to proper management and 

 fertilization. Because of poorer drainage, production from the Wood- 

 hridge and Ridgehury loams is lower than from the Paxton. 



Yield and Analytical Data 



Yield and analytical data are given in Tahles 1 and 2, and Figure 2. 

 The variation in height and lodging of the third-stage hromegrass dur- 

 ing the 1959 season is illustrated in Figures 3, 4, 5, 6, and 7. In the later 



Table 1. Broinegrass Yields 



First Cutting at Three Stages of Maturity 



Treatment 



lbs. N per Acre 



50 



100 



50 

 100 

 200 

 400 



1957 



Ist. Stage ^5/30-31/57) 

 lbs. dry matter 'A 



3,388 

 4,066 



2nd. (6/9-10/57) 

 lbs. dry matter/A 



4,898 

 6,069 



3rd. (6/20-21/57) 

 lbs. dry matter /A 



5.576 

 6,505 



1959 



1st. Stage (6/3/59) 

 lbs. dry matter/A 



1,787 



2,261 



4,731 



5,190 



2nd. (6/11/59) 

 lbs. dry matter A 



2,364 

 2,971 

 4,949 

 5,698 



3rd. (6/21/59) 

 lbs. dry matter/A 



2.463 

 3.210 

 4,183* 

 4,109* 



* Severe lodging. 



stages of maturity, the yields of plots that had received the higher rates 

 of nitrogen were considcral)ly reduced hy lodging. The extent of lodging 

 was also influenced hy rainfall. In 1959. lodging occurred in the third 

 stages of maturity after two and one-half inches of rain fell within a 



