"Low winter temperatures, affecting immature wood and buds caused by unfavorable weather of the previous season, reduced yields materially during two of the five years, and practically neutralized any anticipated benefit from fertilizers. Following the first of these low-crop years, came a season, 1911, in which favorable conditions, acting upon vines left undiminished in vigor by the light crop of the previous year resulted in heavy and quite uniform yields on all the plats. "The yields for the five years are shown in Table I; and a summary showing the average gains from each treatment is given in Table II, with the average financial balance after deducting the cost of fertilizer application from the increased returns from the plats receiving them. TABLE I.--YIELD OF GRAPES (TONS PER ACRE) IN FERTILIZER EXPERIMENTS ========================================================================= Plat.| | | | | | |5-year No. | | 1909 | 1910 | 1911 | 1912 | 1913 |avg. -----+-------------------------+------+------+------+------+------+------ | |_Tons_|_Tons_|_Tons_|_Tons_|_Tons_|_Tons_ 1 |Complete fertilizer; lime| 4.48 | 2.10 | 5.37 | 3.46 | 2.14 | 3.51 2 |Complete fertilizer | 4.76 | 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.