26 



Maine Agricultural Experiment Station. 1918. 



SERIES C. CLOVER PLOTS. 9I-15I. 



Fertilizer was applied broadcast on these plots May 21 and 

 planting was completed the same day. A mixture of equal 

 parts of Red and Alsike clover was used at the rate of 12 pounds 

 per acre. An excellent stand was obtained. The crop on these 

 plots was not harvested but was plowed under in the fall of 

 191 7 in preparation for the next season's potato plots. 



Soil Test Experiment. Series A Planted to Potatoes in 1917. 



The table shows the number of the plots, the yields per plot and the 



calculated yields per acre. Each plot is one rod by four. They 



are arranged in rows 11-19, 21-29, etc. 



Yield per Plot 



Yield per Acre Hundredweight 



Plot 



Fertil- 

 izer 1 













No. 

















Merchantable 



Culls 



Merchantable 



Culls 



Total 







lbs. oz. 



lbs. oz. 









11 



0-20-0 



245—14 



16— 



98.3 



6.4 



104.7 



12 



Not planted 













13 



Not planted 













14 



8-4-8 



342—15 



13— 4 



137.8 



5.3 



143.1 



15 



Check 



266— in 



16—14 



106.7 



4.0 



110.7 



16 



12-0-8 



335— 3 



21— 4 



134.0 



8.5 



142.5 



17 



0-4-16 



240— 1 



12 — 2 



96.0 



4.8 



130.8 



18 



4-12-4 



308— 6 



16— 3 



123.3 



6.5 



129.8 



19 



0-8-12 



212— 7 



12— 1 



85.0 



4.8 



89.8 



21 



4-8-8 2 



335—10 



12— 2 



144.2 



4.9 



149.1 



22 



Check 



312—15 



18— 8 



125.1 



7.4 



132.5 



23 



Not planted 













24 



0-0-20 



258—11 



21—13 



106.0 



8.7 



114.7 



25 



4-4-12 



372— 7 



20— 4 



148.9 



8.1 



157.0 



26 



8-8-4 



365—13 



27— 7 



146.3 



11.0 



157.3 



27 



Check 



225— 5 



24— 9 



90.1 



9.9 



100.0 



28 



4-8-8 3 



299— 



15—11 



119.6 



6.3 



125.9 



29 



5-8-7 



.288— 7 



25— 9 



115.4 



10.2 



125.6 



31 



12-4-4 



394— 5 



19—14 



157.7 



8.0 



165.7 



32 



16-0-4 



392— 7 



18— 2 



157.0 



7.3 



164.3 



33 



4-8-8 



411— 7 



21— 9 



164.6 



8.6 



173.2 



34 



Check 



274— 



22—10 



109.6 



9.1 



118.7 



35 



4-16-0 



340—12 



22— 2 



136.3 



8.9 



145.2 



36 



4-8-10 



328— 5 



23—11 



131.3 



9.5 



140.8 



37 



4-0-16 



306— 8 



16— 8 



122.6 



6.6 



129.2 



38 



12-8-0 



347— 4 



17—15 



138.9 



7.2 



146.1 



39 



0-16-4 



136—10 



12— 4 



54.7 



4.9 



59.6 



41 



Check 



247—14 



23—12 



99.2 



9.3 



108.5 



42 



8-12-0 



358— 5 



21— 7 



143.3 



8.6 



151.9 



43 



16-4-0 



356— 2 



30—15 



142.5 



12.4 



154.9 



44 



4-8-8* 



369— 1 



18— 9 



147.6 



7.4 



155.0 



45 



8-0-12 



339— 1 



34— 



135.6 



13.6 



149.2 



46 



Check 



228— 1 



41—13 



91.2 



16.7 



107.9 



47 



0-12-8 



220— 7 



16— 3 



88.2 



6.5 



94.7 



48 



20-0-0 



354—14 



21— 6 



142.0 



8.6 



150.6 



49 



Check 



183— 15 



22—14 



72.4 



9.2 



81.6 



1 The percentages of fertilizer are indicated in the order of ammonia, phosphoric 

 acid and potash. Thus 0-20-0 means ammonia per cent, available phosphoric acid 

 20 per cent and potash per cent. Except as indicated otherwise in the footnote 

 one-third of the ammonia is in the form of nitrate of soda and two-thirds as sul- 

 phate of ammonia; the phosphoric acid as acid phosphate and the potash in water 

 soluble form. 2 Phosphoric acid in form of floats. 3 Ammonia in form of dried 

 blood. 4 Ammonia in form of tankage. 



