CONTRIBUTIONS FROM THE WISLEY LABORATORY. 



245 



The next two plots were for the purpose of ascertaining whether or 

 not the presence of a greater amount of lime than is normal in our soil 

 would allow the inoculation to show to advantage here. The yields are 

 shown in Table D. 



TABLE D. 



Produce from Plots VII. and VIII. Soil not Inoculated, hut Dressed with 

 Lime at the Rate of Forty Bushels to the Acre. 



Variety 



Plot VIII. 

 Seed not inoculated 



Plot VII. 

 Seed inoculated 



Percentage increase 

 or decrease 





No. of 

 pods. 



Wt, of 



pods 



Wt, of 

 peas 



No. of 

 pods 



Wt. of 

 pods 



Wt. of 

 peas 



No. of 

 pods 



Wt. of 

 pods 



Wt. of 



peas 



Ne Plus Ultra . 

 Duke of Albany 

 Telegrapb . 

 Maincrop . 



638 

 592 

 760 

 696 



grs. 

 5,006 

 6,799 

 7,118 

 5,636 



grs. 

 2,297 

 2,281 

 2,580 

 2,523 



786 

 531 

 795 

 616 



grs. 

 6,217 

 5,884 

 7,863 

 4,702 



grs. 



3,004 

 1,923 

 2,918 

 2,235 



+ 23 

 -11 

 + 4 

 -12 



+ 25 

 -14 

 + 10 

 -17 



+ 30 

 -16 

 + 12 

 -13 



Totals . 



2,686 



24,559 



9,681 



2,728 



24,666 



10,080 



+ 1 



0 



+ 4 



It would seem that there is already a sufficient quantity of lime in the 

 soil for the work of the bacteria there, for although there was an increase 

 in two cases there was a decrease also in two cases, and the total yields 

 scarcely differ from one another, the balance in favour of inoculation 

 being less than 1 per cent. Here again the inoculation was of no value. 



The next two plots will show whether the reason of failure hitherto 

 has been due to lack of potash and phosphoric acid in the soil. 



TABLE E. 



Produce of Plots IX. and X. Soil not Inoculated, but Dressed with Lime, 

 Kainit, and Superphosphate. 





Plot IX. 

 Seed not inoculated 



Plot X. 

 Seed inoculated 



Percentage increase 

 or decrease 



Variety 





















No. of 

 pods 



Wt. of 

 pods 



Wt. of 

 peas 



No. of 

 pods 



Wt. of 

 pods 



Wt. of 

 peas 



No. of 

 pods 



Wt. of 



pods 



Wt. of 



peas 



Ne Plus Ultra . 

 Duke of Albany 

 Telegraph . 

 Maincrop . 



784 

 592 

 820 



662 



grs. 

 6,405 

 6,857 

 8,072 



5,683 



grs. 

 3,010 

 2,308 

 2,837 

 2,633 



744 

 547 

 784 

 476 



grs. 

 6,026 

 6,133 

 7,375 

 3,711 



grs. 

 2,755 

 2,144 

 2,505 

 1,663 



-6 



-8 

 •-- 5 

 -30 



-3 

 -14 



-9 

 -35 



-9 

 -8 

 -8 

 -37 



Totals . 



2,858 



27,017 



10,788 



2,551 



23,245 



9,067 



-12 



-14 



-16 



Here we find a reduction in the crop from the inoculated seed in every 

 variety, and quite a marked one. From this it is evident that the failure 

 of the inoculation to produce beneficial results in other cases was not due 

 to lack of sufficient potash and phosphoric acid in the soil. 



On the last two plots calcium cyanamide was put, increasing the 

 quantity both of lime and nitrogen in the soil. Table F shows the yield 

 from these two plots. 



