2.21 | 5.71 | 4.30 | 2.83 | 3.96
3 |Nitrogen and phosphorus | 5.17 | 2.14 | 5.61 | 4.00 | 2.25 | 3.83
4 |Nitrogen and potash | 4.25 | 2.55 | 5.64 | 4.10 | 2.85 | 3.87
5 |Phosphorus and potash | 3.41 | 2.00 | 5.44 | 4.35 | 1.78 | 3.39
6 |Check | 3.38 | 2.10 | 5.32 | 3.60 | 1.24 | 3.12
7 |Complete fertilizer; lime| 4.69 | 2.38 | 5.62 | 4.80 | 3.04 | 4.10
8 |Complete fertilizer | 4.66 | 2.07 | 5.71 | 4.98 | 2.72 | 4.02
9 |Nitrogen and phosphorus | 4.99 | 2.04 | 5.35 | 4.89 | 2.61 | 3.97
10 |Nitrogen and potash | 4.79 | 2.26 | 5.91 | 4.89 | 3.07 | 4.18
11 |Phosphorus and potash | 4.99 | 1.87 | 5.03 | 4.21 | 1.97 | 3.61
=========================================================================

TABLE II.--AVERAGE INCREASE IN GRAPE YIELDS AND AVERAGE FINANCIAL GAIN
FROM FERTILIZER APPLICATIONS

N = nitrogen, P = phosphorus, K = potassium, Ca = lime.
Gains in tons per acre.

========================================================================
| N, P, | N, P, | N, P. | N, K. | P, K.
| K, Ca. | K. | | |
----------------------+---------+---------+---------+---------+---------
| _Tons_ | _Tons_ | _Tons_ | _Tons_ | _Tons_
First plat of pair | 3.51 | 3.96 | 3.83 | 3.87 | 3.39
Second plat of pair | 4.10 | 4.02 | 3.97 | 4.18 | 3.61
|---------+---------+---------+---------+---------
Average | 3.80 | 3.97 | 3.90 | 4.02 | 3.50
Check plat | 3.12 | 3.12 | 3.12 | 3.12 | 3.12
|---------+---------+---------+---------+---------
Average gain | .68 | .85 | .78 | .90 | .38
Average financial gain| $5.82 | $13.84 | $14.05 | $18.54 | $6.99
========================================================================

From this last table the benefit from nitrogen appears quite evident
since every combination in which it appears gives a substantial gain
over the one from which it is absent. Phosphorus and potassium without
the nitrogen, lead to only a slight increase over the check; and lime
appears to be of no benefit. Financially, the complete fertilizer and
lime combination, the nitrogen and phosphorus combination and the
phosphorus and potassium combination failed