CONTRIBUTIONS FROM THE WISLEY LABORATORY. 



243 



The Result. 



Cultivated Ground. — As already pointed out, the experiment was 

 carried out in two sections, which differed considerably from one another, 

 and it will be best to consider th^m separately, taking the series on the 

 cultivated ground first. It may bj noted at the outset that the roots of 

 the plants on all the plots were found to be well supplied with nodules. 



TABLE A. 



* Produce from Plots I. and II. Seed Inoculated, but not Manured. 



Variety 



Plot I. 

 Seed not inoculated 



Plot II. 

 Seed inoculated 



Percentage increase 

 or decrease 





No. of 

 pods 



Wt. of 

 pods 



Wt. of 

 peas 



No. of 

 nods 



Wt. of 



pods 



Wt. of 

 peas 



Xo. of 

 pods 



Wt. of 

 pods 



Wt. of 

 peas 



Ne Plus Ultra . 

 Duke of Albany . 

 Telegraph . 

 Maincrop . 



61-5 

 496 

 603 

 561 



grs. 

 5,003 

 5,363 

 6,044 

 4,242 



grs. 

 2,421 

 1,734 

 2,212 

 2,116 



611 



489 

 623 

 504 



grs. 

 4,793 

 5,135 

 6,035 

 4,144 



grs. 

 2,258 

 1,740 

 2,240 

 1,967 



-1 

 -2 

 + 3 

 -11 



-5 

 — 5 

 -1 

 -3 



-7 

 0 

 + 1 



-8 



Totals . 



2,275 



20,652 



8,483 



2,227 



20,107 



8,205 



-3 



-3 



-4 



* All weights are given in grammes, except in Table P. 



Here the inoculation of the seed yielded no increase of crop when the 

 soil had been inoculated previously, but instead there was a slight decrease, 

 amounting in the produce as it comes to the market from the whole plot 

 to about 4 per cent. This decrease was seen in all the varieties with the 

 exception of ' Telegraph,' where the difference was very slight. 



TABLE B. 



Produce from Plots III. and IV. Soil neither Inoculated nor Manured. 



Variety 



Plot i V. 

 Seed not inoculated 



Plot III. 

 Seed inoculated 



Percentage increase 

 or decrease 





No. of 

 pods 



Wt. of 

 pods 



Wt. of 

 peas 



Xo. of 



pods 



Wt. of 

 pods 



Wt. of 

 peas 



Xo. of 

 pods 



Wt. of 

 pods 



Wt. of 



peas 



Ne Plus Ultra . 

 Duke of Albany 

 Telegraph ! 

 Maincrop . 



692 

 605 

 805 

 623 



srrs. 

 5,602 

 6,767 

 7,722 

 4,958 



grs. 



2,691 

 2,308 

 2,883 

 2,421 



583 

 558 

 596 

 474 



"Trs. 

 4,542 

 6,150 

 5,630 

 3,185 



grs. 

 2,141 

 2.044 

 2,120 

 1,874 



-15 

 -8 

 -26 

 -24 



-19 

 -11 



-28 

 -35 



-20 

 -13 



-26 

 -23 



Totals . ' . 



2,725 



25,549 



10,303 



2,211 



19,507 



8,179 



-19 



-23 



-21 



In this case the decrease from the inoculated seed was much more 

 marked, being over 20 per cent., and further the decrease occurred in 

 every variety, varying from 11 per cent, in 'Duke of Albany' to 35 per 

 cent, in 1 Maincrop.' 



A comparison of the produce from these four plots, which are strictly 

 comparable with one another, is very interesting. The total yield from 



R 2 



