FIELD CHOPS. 



891 



mmdl. Ticlslr., 33 {1894), pp. 397-312, 372-384).— Witrate of soda vs. 

 fish (juano for spring wheat and for oats. — The following are the average 

 yields with the different applications of fertilizers: 



Yield of wheat and oata with nitrate of soda and fish, guano. 



Fertilizer. 



Nitrogen 



per 

 hectare. 



Time of application 

 of fertilizers. 



Yield per hectare. 



Grain. Straw, 



Spring wheat 



Nothing 



Nitrate of soda 



Do 



Do 



Fish guano 



Do 



Oats. 



Nothing 



Nitrate of soda 



Do 



Do 



Fish gnano 



Do 



Kg. 

 

 50.00 

 50.00 



50.00 



33.75 

 50.00 





 33.75 

 33.75 



33.75 



33.75 

 50.00 



At sowing time.. 



At geruiiuation.. 

 ^h at gemiiuation . 

 (l at heading 



Preceding fall ... 

 do... 



At sowing time.. 



At germination.. 

 5J at germination. 

 (i at beailiug 



Preceding tall ... 

 do 



Kg. 

 2, 451. 

 2, 780. 5 

 2, 953. 7 



! 3, 025. 



2,641.0 

 2, 643. 7 



2, 608. 5 

 3, 137. 5 

 2, 923. 5 



' 2, 731. 5 



2, 808. 3 

 2, 833. 3 



Ka. 



4, 742. 

 6, 330. 

 5, 796. 2 



4,912.5 



5, 508. 

 5, 218. 7 



4, 888. 



5, 833. 

 5, 033. 



5, 810. 



5, 045. 

 5, 223. 



The best time for applying nitrate of soda to spring wheat was at the 

 time of germination or half at this time and half when the wheat was 

 heading. In case of the oats, on the other hand, the best results were 

 obtained by applying the fertilizer at time of sowing. 



Barnyard manure vs. poudrette for winter wheat and other crops. — 

 Beginning in 1891 straw-litter manure and peat-litter manure were 

 compared with peat poudrette as fertilizers for winter wheat. In 1892 

 rutabagas were planted on plats 148.5 square meters in area, the barn- 

 yard manure being aj)plied at the rate of apiDroximately 40,000 kg. per 

 hectare, and the poudrette at the rate of 15,000 kg. The poudrette used 

 contained 74.70 per cent of water, 0.86 per cent of nitrogen, 0.45 per 

 cent of phosphoric acid, and 0.44 per cent of potash. The yield of ruta- 

 bagas per hectare was : 



Eilograms. 



With straw-litter manure 41,073 



With peat-litter manure 43, 875 



With peat poudrette 43,807 



The yield was smallest with straw-litter manure, as it was also in 



1891. The residual effect of the 3 kinds of manure was studied during 



1893, barley being sown without fertilizers on the plats used in the 



preceding year's experiments. The yield of barley per hectare was as 



follows : 



Residual effect of manures on yield per acre of harley. 



