488 Field Experiments on Clover- Seeds. 



Plot 2 (sulphate of ammonia). — Very little difference between 

 this plot and No. 1. Growth rapid, and very thick and coarse ; 

 colour dark green. Young seeds in some places killed. 



Plot 3 (superphosphate). — No apparent change. 



Plot 4 (common salt). — Plant looks yellow and weak ; a good 

 many young seeds apparently killed. 



Plot 5 (unmanured plot). — Thin growth ; but young seeds 

 looking much healthier than in all the preceding plots. 



Plot 6 (muriate of potash). — The young seeds appear to be 

 all killed, and the plant looks generally unhealthy. 



Plot 7 (sulphate of potash). — Apparently little or no change. 



Plot 8 (sulphate of lime). — Plant looks rather thinner, and not 

 quite so well as in the rest of the field. 



Plot 9 (superphosphate and nitrate of soda). — This plot looks 

 well ; colour rich, growth very thick. 



Plot 10 (superphosphate and muriate of potash). — Thick 

 growth and looking well, with the exception of the young seeds, 

 which are rather yellow. 



3Iat/ ord, 1865. — The Plots 1, 2, 9, and 10, much superior in 

 appearance to the others. The clover-seeds, which suffered at 

 first more or less in all the plots dressed with saline fertilizers, 

 have now nearly recovered, with the exception of No. 6 (muriate 

 of potash), in which the clover appears to be quite killed. 



1 may add that, in conformity with previous experience, the 

 plots manured Avith nitrate of soda and with sulphate of am- 

 monia showed a larger proportion of luxuriantly-growing true 

 grasses than the plots not dressed with nitrogenous manures ; 

 and that in Plot 10 the propriety of applying simultaneously 

 soluble phosphate of lime and potash to grass-land was suggested 

 at once by the generally healthy appearance of the herbage, and 

 the luxuriant growth of clovers and of a number of leguminous 

 plants. 



The results of the weighings of the produce are given in the 

 subjoined Table (see following page). 



It will be seen that here again the mixture of nitrate of soda 

 and superphosphate gave the largest increase, and that nitrate 

 of soda alone produced about the same increase as sulphate of 

 ammonia. 



Sulphate of lime, or gypsum, seems to have answered rather 

 better on permanent grasses than on clover-seeds. However, 

 neither that nor superphosphate raised the produce to any con- 

 siderable extent. The same was the case with common salt, sul- 

 phate of potash, and muriate of potash, each applied separately. 



The fact that a mixture of superphosphate and muriate of 

 potash often gives a large increase in grass-crops, whereas either 



