12 MAINE AGRICULTURAL LXPLRIMENT STATION. IQOU. 



received a dressing of pea vines from the factory which were 

 plowed under, also the following amounts of fertilizing materials 

 were added to each plot. 



Plot I — 400 lbs. acid phosphate, 250 lbs. muriate of potash. 



Plots 2, 3, and 4 — 100 lbs. dried blood, 400 lbs. acid phos- 

 phate, 250 lbs. muriate of potash. 



On May 23rd Alaska peas were planted with a grain drill at 

 the rate of 2>^ bushels to the acre. Those put on plot i were 

 inoculated with the Nitro-Culture Company's culture, and those 

 on plot 2 received no treatment. The seed used on plot 3 was 

 treated with the U. S. Department of Agriculture's culture and 

 that of plot 4 was not treated with any culture. 



The field was visited June 27 and at that time the peas were 

 about 8 inches high, of good color and appeared to be in a thrifty 

 condition. The roots of some plants on each plot were exam- 

 ined and in every instance the nitrogen collecting bacteria 

 nodules were found to be present. This shows, as was to be 

 expected, that the field was thoroughly stocked with the nodule 

 forming bacteria. There was no noticeable difference in the 

 dififerent plots either in size and thriftiness or in the number or 

 character of the root nodules. 



The field was visited again July 28th, but the weeds had then 

 made such progress that it was not possible to make any com- 

 parisons of the different plots and the peas were nearly ripe 

 enough to harvest. 



On July 29 a part of plot No. i was harvested and on the 31st 

 the harvesting of this plot was completed together with plots 

 2 and 3, — three acres per day being about all the factory could 

 take care of. August ist plot No. 4 was taken to the factory. 



The yields of green peas after being threshed and screened 

 are shown in the following table. 



Plot I. Phosphoric acid and potash, 1,747 pounds. 



Plot 2. Nitrogen, phosphoric acid and potash, 1,388 pounds. 



Plot 3. Nitrogen, phosphoric acid and potash, 1,307 pounds. 



Plot 4. Nitrogen, phosphoric acid and potash, 1,431 pounds. 



All of the yields are small, not much more than two-thirds of 

 a crop being secured on account of the very dry season. The 

 larger yield on plot i was probably due to some cause not 

 directly connected with the experiment. It is hardly to be 

 thought that the presence of the small amount of nitrogen used 

 on plots 2, 3 and 4 could have any relation to the diminished 



