42 Experiments with Lime Nitrogen, [april, 



In general, all the trials with barley, potatoes, and mangels 

 were favourable to the action • of lime nitrogen. From the 

 whole of the experiments Dr. Haselhoff concludes that lime 

 nitrogen affects the germination of the seed, but so soon as the 

 injurious properties are dissolved by the soil the nitrogen it 

 contains is available as plant food, and its action approximates 

 to that of nitrate of soda. The period required to dissipate 

 the injurious combinations in lime nitrogen varies according 

 to the character of the soil, and for the present caution is 

 recommended in regard to its employment in actual practice. 



Experiments of a somewhat similar character have been 

 undertaken at the Experiment Station at Augustenberg by 

 Professor Behrens,* where for the purpose of testing the effect 

 of lime nitrogen on germination seven plots were employed. 

 They all received farmyard manure in the winter, and then on 

 the 26th March lime nitrogen was applied and lightly harrowed 

 in on all except one (Plot I.). Barley was then immediately 

 sown on Plots I. and II., one week later on Plot III., two weeks 

 later on Plot IV., three weeks later on Plot V., four weeks later 

 on Plot VI., and five weeks later on Plot VII. Germination 

 occurred normally on all of them except on Plot II., where the 

 seed was sown immediately after the distribution of the lime 

 nitrogen. On this plot only a small number of grains ger- 

 minated, almost exclusively on the edges of the plot, and these 

 were about ten days later than the grain on Plot I. From this 

 it would seem that an interval of a week between the applica- 

 tion of the lime nitrogen and the sowing of the seed was 

 sufficient to prevent any injurious effect, and this is in agree- 

 ment with the field experiments at Marburg. 



Two series of experiments are reported from the Experi- 

 ment Station of the Agricultural Chamber of the Duchy of 

 Oldenburg.t In the case of roots sown ten days after the 

 application of the lime nitrogen no injurious effect on the 

 germination and growth of the plant was observed. The yield 

 obtained was about equal to that from nitrate of soda. 



Lime nitrogen applied to grass land seems to have produced 

 relatively little effect. This may have been due to something 



* Deutsche Landiv. Presse, i8th November, 1905 

 t Deutsche Landw. Presse, i6th December, 1905. 



