954 EXFEEIMENT STATION KECORT). 



tuchj Sta. Bui. 104, pp. '24T-281). — Analyses of 334 brands of commercial fertilizers 

 examined during 1902 are reported, with a brief discussion of methods and results of 

 the inspection. 



Analysis of commercial fertilizers sold in Maryland, H. B. McDonnell 

 ET AL. {Maryland Agr. College Quart., lUOS, No. 19, pp. 48). — The results of analyses 

 of 498 samples of fertilizers examined from August, 1902, to January, 1903, are 

 reported. 



Analyses of licensed fertilizers, 1902, F. W. Woll and G. A. Olson {Wis- 

 consin Sta. Rpt. 1902, pp. 247-250, 285,286). — Analyses of 11 samples are reported, 

 with brief notes on the results of inspection. The text of the State fertilizer law is 

 also given. 



Fertilizers licensed for sale in Wisconsin in 1903, F. W. Woll ( Wisconsin 

 Sta. Bui. 99, pp. 5, 9, 10). — The text of the State fertilizer law is given, with guar- 

 anteed composition of 13 brands of fertilizers licensed for sale in 1903. 



FIELD CROPS. 



Field experiments "with, fertilizers, 0. S. Pjielps {Connecticut Storrs Sta. Rpt. 

 1901, 2>P- 122-147). — The work here ri'ported I'omprises special nitrogen experiments 

 with corn, cowpeas, and soy beans, and a soil test with different fertilizers on crops 

 grown in rotation. The Mork is repeated yearly with the same fertilizers on the 

 same plats. The reports of former years together with a description of the experi- 

 ments have been previously noted (E. S. R., 12, p. 936). 



The results with corn indicate that mineral fertilizers are very essential to the crop 

 but insufficient when used alone. The complete fertilizer was found essential for 

 good yields. The most profitable results, considering the yields alone, were obtained 

 with 25 to 50 lbs. of nitrogen per acre in the form of nitrate of soda used with min- 

 eral fertilizers. When the feeding value of the crop is taken into consideration even 

 larger quantities of nitrogen than 50 lbs. per acre are believed to be profital)le. The 

 use of nitrogen beyond 50 lbs. per acre did not generally produce a marked increase 

 in the dry matter but the percentages of nitrogen and of protein in the grain and the 

 stover were highest where the largest quantities of nitrogen had been used in the 

 fertilizers. 



Experiments with cowpeas and soy beans show that mineral fertilizers are effective 

 in increasing the yields. The addition of nitrogenous fertilizers had but little effect 

 on the yield or the percentage of protein in the crop. The average results of the 

 experiments thus far made at the station with cowpea fodder show practically no 

 advantage over the use of nitrogenous fertilizers. With soy beans the use of nitro- 

 gen in the fertilizer application produced a small increase in the yield of seed In 

 both crops the protein was increased but little, if any, by the use of nitrogenous 

 fertilizers. 



The results of the soil test with crops in rotation for 1901 showed that while the 

 mineral fertilizers were of greater value than nitrogen in increasing the yield of soy 

 beans, nitrogen was of more value when supplied in the form of manure. While a 

 complete fertilizer gave an increase of only 2 bu. per acre over the yield where only 

 mineral fertilizers were used, manure gave an increase of nearly 9 bu. The general 

 results for the past 12 years show that nitrogen and phosphoric acid are of prime 

 importance on the station soil for good yields of oats. These same elements were 

 most effective where corn was grown in rotation. Potatoes responded more generally 

 to the use of potash. 



Fertilizer experiments •with wheat and barley, G. P. Foaden {Jour. Khrdiv. 

 Agr. Soc. and School Agr., 4 {1902), No. 5, pp. irr-i-S".?).— Cooperative experiments 

 were conducted to test the value of nitrate of soda, superphosphate, and barnyard 

 manure as fertilizers for wheat and barley. The results in.diQat^ that on laud of 



