144% ; when potash was used without lime the yield was increased 180% ; 

 when both potash and lime were used the yield increase was 315%. 



In southern New Hampshire, at Northwood, on a Paxton loam when 

 lime was used alone the ladino yield was increased 130%, when potash was 

 used alone the yield increase was 600%, but when both lime and potash were 

 used, the ladino yield was increased 1200%. 



F. S. Prince, L. T. Kardos 



Irrigation Results in Better Quality Forage. 



Rainfall during the 1951 season was ample and evenly distributed so 

 that at no time was soil moisture level low enough to call for irrigation. The 

 index for irrigation was a Bouyoucos gypsum block reading of 9000 ohms 

 anywhere in the profile to a depth of 16 inches. The highest resistance found 

 during the season was 7000 ohms, so no supplemental irrigation was used. 



Since the experiment was started in 1950 on a newly seeded field and 

 a very much better stand of grass and clovers was secured on the irrigated 

 area, it was of interest to determine to what extent this difference would 

 extend over into the second year of the stand. Surprisingly, the area which 

 was not irrigated in 1950 recovered tremendously in 1951, and there was 

 relatively little difference in yield of total forage from the areas which had 

 been so different in 1950. 



The residual effects of the irrigation in 1950 were reflected, however, in 

 the quality of the forage as shown in the following table: 



1950 



Treatment 



1951 



Ladino 

 % 



Red Clover 



% 



Total Legumes 



% 



Irrigated 

 Unirrigated 



Natural rainfall only 

 Natural rainfall only 



11.9 

 9.6 



38.4 

 33.7 



50.3 

 43.3 



Soil type also had some influence on the stand. The experimental area 

 had two distinct soil types: Charlton, a well-drained soil, and Buxton, an 

 imperfectly drained soil. The Charlton had relatively less ladino and more 

 red clover, while the Buxton had more ladino. 



This indicates that soil type has some influence in getting and keeping 

 a stand of ladino clover when drought becomes severe. Both soils on which 

 the irrigation water was applied are better than average for forage production. 

 If a soil such as a Merrimac loamy sand had been used, the results would, 

 no doubt, have been more spectacular. 



F. S. Prince, P. T. Blood, K. S. Morrow 



The Use of Drainage Ditches. 



Drainage ditches and beds constructed on the 80-acre Moore field in 

 Durham continue to be effective in removing the water from the poorly 

 drained Whately and Biddeford soils. The 100-foot beds are a little more 

 satisfactory than the 75-foot beds for turning the equiment during hay har- 

 vest and both of these provide better drainage than the 200-foot beds. Hay- 

 yields remain high and the initial investment in drainage should be paid off 

 within several years. The costs, yields, and water table measurements will 

 be summarized this year. 



W. H. Lyford 

 18 



