40 



Experiments with Lime Nitrogen, [april, 



When half this quantity was applied, the seed germinated when 

 sown one month after the application of the manure, but the 

 growth was less satisfactory than that in the nitrate of soda pots. 

 When the quantity was reduced to one-fourth and one eighth, 

 the germination seemed unaffected, and the fertilizer produced 

 a good yield, equal to 95 per cent, of the average crop from the 

 nitrate of soda. In 1904 buckwheat was sown, and grew satis- 

 factorily, except when the full quantity of lime nitrogen was 

 used, when the development at first was somewhat backward, 

 though it recovered later. 



Looking at the results obtained in the pot experiments in the 

 two years, it is considered that if the effect of the nitrogen in 

 nitrate of soda be expressed as 100, the action of lime nitrogen 

 is equal to 79. It is also evident that lime nitrogen acted 

 favourably on plant growth when a sufficiently long period 

 elapsed between its application and the sowing of the seed. 



The field experiments were carried out in one case on a light 

 loam with rye and potatoes, and in another case on a heavy 

 loam with barley, potatoes, and mangels. In both instances a 

 uniform manuring with lime, kainit, and basic slag was given. 

 Each plot was 120 square yards in area. In the rye experi- 

 ments on light loam the lime nitrogen was applied on the 17th 

 September, 1903, and the nitrate of soda one-third shortly before 

 the sowing, one-third on 30th March, 1904, and one-third on 

 1 8th April as a top-dressing. Shortly after the first dressing and 

 before seeding a heavy rain fell. Seed (rye) was put in on 22nd 

 September, 1903, that is, only five days after the application of 

 the lime ni<-rogen, but no injurious effects showed themselves. 



The results were as follows : — 



Manures. 



Yield per acre. 



Per cent. 





Grain. 



Straw. 



Grain. 



Straw. 



Unmanured 



Nitrate of soda (three applica- 

 tions) ... 

 Lime nitrogen 



Nitrate of soda (two applications 



in spring) 

 Lime nitr. gen ... 



Cwt. qr. 

 10 3 



17 0 



14 0^ 



17 2 

 14 i| 



Cwt. qr. 

 30 I 



41 2 

 40 2 



39 3 

 38 I 



100 



157-4 

 i3i'5 



159-3 

 133-3 



ICO 



136-9 

 133-6 



131-6 

 126-3 



