FIELD CROPS. 529 



FIELD CROPS. 



Field experiments, 1907 {Dciit. Agr. and Tech. lustr. Ireland Jour., 8 

 (190Si, Xo. 2. pp. 219-320} . — lu bailey experiments it was found that Danish 

 Archer grown in Ireland 1 year and Danish Archer freshly imported were equal 

 in value and both better than Irish Archer. This work with seed of the same 

 variety from different sources has been in progress only 2 years. The results 

 further show that Irish Archer grown for four successive seasons in Ireland has 

 improved its position, and Danish Archer grown one season in Ireland has 

 maintained it, as compared with seed freshly imported. 



Of different manures applied on meadow hay the application consisting of 

 1 cwt. of nitrate of soda, 2 cwt. of superphosphate, and 2 cwt. of kainit per 

 acre gave the best results. 



Apparently the most suitable application for potatoes consisted of 15 tons 

 of barnyard manure, 1 cwt. of sulphate of ammonia, 4 cwt. of superphosphate, 

 and 1 cwt. of muriate of potash. Factor, Up-to-Date, and Duchess of Cornwall 

 were the best-yielding varieties this season. Sprouting seed potatoes before 

 planting increasetl the average yield during the 5 years by from 1 ton 13 cwt. 

 to 2 tons 13 cwt. per acre, as compared with unsprouted seed. 



The greatest profit in growing fodder beets was secured with the use per 

 acre of 20 tons of barnyard manure, 4 cwt. of superphosphate, 2 cwt. of 

 sulithate of ammonia, and 4 cwt. of salt. The average yield with this treat- 

 ment was 34 tons ~^ cwt. per acre. On the average salt produced a yield of 1 

 ton 10 cwt. per acre more than kainit, at a cost of about half as much. Among 

 the best-yielding varieties may be mentioned Yellow Globe, Prize Winner, 

 Windsor Prize Taker, and New Triumph. 



The best yield of oats was secured where 1 cwt. of sulphate of ammonia, 

 3 cwt. of phosphate, and 3 cwt. of kainit were applied per acre, and the next 

 best yield was obtained with a similar application but with the kainit omitted. 

 These two applications have given satisfactory returns in each of the 5 

 years during which the experiment has been in progress. The best yields of 

 grain were given by Banner and Waverly, but Potato and Black Tartarian 

 gave heavier yields of sti-aw. 



From the experiments with turnips it was found that where 4 cwt. of 

 superphosphate was used with 10 tons of barnyard msinure a slightly heavier 

 crop was secured than where the manure was applied alone at the rate of 20 

 tons per acre. Centenary was one of the best-yielding varieties, as shown by 

 the average returns for a number of years. 



Fertilizers for Jerusalem artichokes, D. Doxox {Jour. Agr. Prat., n. ser.. 

 1-5 {190S), Xo. 13, pp. 391-393, fig. 1). — Experiments with different applications 

 of barnyard manure and commercial fertilizers on Jerusalem artichokes were 

 conducted for several years. The results indicate the importance of potash 

 fertilizers in bringing about a high yield of tubers regular in form, smooth, 

 easily harvested, and rich in nutritive matter. 



An application per hectare of 15.000 kg. of good barnyard manure, 400 kg. of 

 phosphatic manure either as superphosphate or slag, 200 kg. of sulphate of 

 potash, and from 100 to 1.50 kg. of nitrate of soda is recommended. 



Tests with different strains of root crops, H. Hklwec [Tids.'ikr. Landbr. 

 Plantearl, IJf (1907), pp. 2.'i()-275). — First-class seed of Barre, Elvetham, and 

 Eckendorf fodder beets was compared. The average yields per tondeland (0,734 

 acre) were as follows: Barre S3.7 cwt.. Elvetham SO cwt.. and Eckendorf 76.4 

 cwt. of dry matter. I>ittle Taaroje. a strain of the Barre fodder beet, proved 

 more valuable than flrst-class strains of Eikendorf. 



