592 Report of the Department of Horticulture of the 



Table XI. — Yield of Grapes on Plats Differentlt Fertilized in 



Jennings Vineyard. 



Calculated to tons per acre. 



o 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



Treatment. 



Complete fertilizer; lime 



Complete fertilizer 



Check 



Nitrogen and phosphorus 



Nitrogen and potassium 



Phosphorus and potassium 



Complete fertilizer; lime 



Complete fertilizer 



Nitrogen and phosphorus 



Nitrogen and potassium 



Phosphorus and potassium 



Check 



Stable manure 



Stable manure; lime 



Mammoth clover 



Cteck 



Mammoth clover; lime 



Barley and cowhorn turnips 



Barley and cowhorn turnips; lime 



Stable manure 



Stable manure; lime 



Mammoth clover 



Check 



Mammoth clover; lime 



Barley and cowhorn turnips 



Barley and cowhorn turnips; lime 



1910. 



To?ts. 

 2.38 

 2.72 

 2.44 

 2.51 

 2.48 

 1.76 

 1.80 

 1.63 

 1.97 

 1.56 

 2.38 

 2.10 

 2.38 

 2.44 

 2.38 

 2.07 

 2.21 

 2.34 

 2.27 

 2!l7 

 3 

 2 



2 



1 



9 



.23 

 .00 

 .44 

 .42 



,78 



1.97 



1911. 



Tons. 

 2.82 

 3.87 

 3.29 

 .67 

 91 

 .63 

 12 

 43 

 40 

 .67 

 92 

 46 

 ,77 

 35 

 26 



3 

 3 

 3 

 3 



3 



3 



2 



3 



3 



4 



3 



4.14 



3.60 



3.43 



2.44 



3.84 



3.36 



3.36 



3.06 



2.72 



3.23 



3.19 



Average. 



Tons. 

 2. 

 3. 



60 

 29 



2.86 



09 

 19 

 69 

 46 

 53 

 68 

 61 

 65 



2.78 



07 

 39 

 82 

 10 

 90 

 88 

 35 

 00 

 29 

 68 

 75 

 07 

 00 

 58 



A study of the average yields from Plats 15, 16, 17 and 18 leads 

 to the conclusion that no benefit thus far had occurred from the 

 use of green manures. Comparing Plats 20, 21, 22, 23, and 24 we 

 again note slight gains from the stable manures but still insufficient 

 to pay for the applications, while the green manures show yields 

 less than the check. Applications of lime with stable manure present 

 consistent gains in each set of plats and sufficient to pay for the 

 treatment, while the applications made on the green manure plats 

 do not indicate any gain. The low production of 1910 and its 

 contributory causes have been discussed earlier in this bulletin. 

 The fact stands out with this vineyard as with the Station vineyard 



