FIELD CROPS. 



of 32 bu. In the 2-year rotation a gain of a1 Leasl 1 1 bu. per acre, and in th< 

 rotation an increase of LO bu. in corn and oats, and of LOO per cenl in the yield of 

 clover, is considered due to phosphorus. 



The results of pot experiments with wheal Bhowed thai with clover turned under, 

 rock phosphate gave a greater increase than the gains made b\ the clover and rock 

 phosphate separately, similar results were secured with clover and steamed bone 

 meal, also with bone meal and potassium, and with rock phosphate and potassium. 

 With other com hi nations this was nol the case. The potassium apparently in< 

 the availability of the phosphorus in the bone meal and the rock phosphate. 

 Slightly better results were obtained with rock phosphate than with bone meal. 



The latest coin yields on the university soil experimenl fields, partly under test 

 since L876, indicate the great value of suitable crop rotations, but thai these alone do 

 not maintain fertility. Directions for soil management are given. 



Report on the comparative merits of varieties of oats, 1903 4, R. B. < rREiG 

 and .1. Hendrick {Aberdeen and No. of Scot. Col. Agr. />'"/. ?, pp. S7).- These experi- 

 ments, conducted in Morayshire and at Ross and < Iromarty, were made for the pur- 

 pose of determining the grain and straw producing power of different oal varieties, 

 their com pa rath e milling quality, and the composition of the grain and straw . 



The following varieties were grown in the Morayshire experiment: Potato, 

 market. Storm King, Sandy, Waverly, Goldfinder, Banner, and Siberian. Potato 

 and Sandy are two well-known old varieties which were included for comparison 

 with the newer sort-. The tests were carried out on :; different farm-. Banner was 



the best -rain producer on lighl land and the besl average -rain producer "ii all the 

 farms. Storm King, Potato, and Sandy, mentioned in the decreasing order of yield, 

 stood at the foot of the list. 



Banner produced 33 bu. more of first quality grain than Sandy and 20 bu. more 

 than Potato. The average total yield of Banner was 88 bu. and that of Sandy 63.25 

 bu. In weight of strew produced Potato ranked first, while Banner did not rank 

 very high in this respect. Siberian and Newmarket showed themselves good gen- 

 eral purpose, or intermediate varieties, in the production of grain and straw. The 

 earliest variety. Storm King, required 136 days to mature and Goldfinder, the latest. 

 160 days. Banner and Sandy stood nearest the average in the length of growing 

 period. 



In the Ross and Cromarty trials the same varieties, with the exception of Sibe- 

 rian, which was replaced by Hamilton, were grown on 7 different farms. The aver- 

 age total > ield of grain was in favor of 1 [amilton. A comparison of the results on •"> 

 of the farms shows that Hamilton gave an average yield of 79.75 bu., as compared 

 with 69 bu. for Potato: and in these tests Banner and Potato produced the same 

 quantity of grain, hut Potato furnished the larger yield of straw. The season was 

 not favorable, ami the average weighl per bushel of grain as compared with that of 

 the original seed showed a reduction in all varieties except Banner. 



In these tests Sandy and Potato ranked high as grain producers and als 

 among the 3 first in the yield of straw, Hamilton standing second. The percentage 

 of oatmeal obtained from each variety at each of the places is given in a table. 

 Sandy and Newmarket ranked first with 57.8 and ">7.d, respectively, while Hamilton 

 on the average of 4 farms furnished only 53.4 percent. The percentages of husk 

 and kernel ami the composition of the kernels of the different varieties, a- well a- 

 Hhe composition of the straw, is given in tables. The percentage of kernel ranged 

 from 71.27 in Storm King to 77.13 in Sandy. 



Varieties of potatoes, \V. Bri i e i Edinb. ",,</ East of Scot. Col. Agr. />''"'. '<'. /'/'• 

 4). — Six varieties of early and 7 varieties of late potatoes were tested at 3 differenl 

 farms in 1904. In cadi case Pink Blossom, Factor, Dp-to-Date, Twentieth Century, 

 and British Queen gave the best results when both quantity and quality are consid- 

 ered. Langworthy is unequaled in quality, hut proved to lie low in yielding power. 



