======================================================================= FERTILIZER APPLICATION | LEAF | WOOD | FRUITING | WEIGHT[11] | PRUNED[12] | CANES LEFT[13] ----------------------------+------------+------------+---------------- | _Grams._ | _Lbs._ | Complete fertilizer; lime | 1,033 | 1,295 | 2,468 Complete fertilizer | 1,010 | 1,367 | 2,609 Nitrogen and phosphorus | 1,047 | 1,272 | 2,585 Nitrogen and potassium | 1,069 | 1,401 | 2,646 Phosphorus and potassium | 964 | 1,086 | 2,326 Check | 930 | 915 | 2,110 ======================================================================= _Cooeperative experiments._ "In order to secure information as to the behavior of fertilizers on the different soils of the Grape Belt, cooeperative tests were carried on in six vineyards owned, respectively, by S. S. Grandin, Westfield; Hon. C. M. Hamilton, State Line; James Lee, Brocton; H. S. Miner, Dunkirk; Miss Frances Jennings, Silver Creek; and J. T. Barnes, Prospect Station. The soil in these vineyards included gravelly loam, shale loam and clay loam, all in the Dunkirk series, and the experiments covered from two to two and a half acres in three cases and about five acres in each of the other vineyards. The work continued four years in all but one of the experiments, which it was necessary to end after the second year. "The general plan of the tests was much like that at Fredonia in most of the vineyards, with the additions of plats for stable manure and for leguminous and non-leguminous cover crops with and without lime. From two to six check plats were left for comparison in each vineyard. As already stated the results were often inconsistent in duplicate plats in the same vineyard, and if one test appeared to point definitely in a certain direction, the indication would be negatived by results in other vineyards. In these experiments the yield of fruit was the only index to the effect of treatments as it was not possible to weigh leaves or pruned wood, or to count the canes left. "Nitrogen and potassium in combination, which gave the largest gains and greatest profit in the Station vineyard at Fredonia, showed a 13 per ct. increase in yield on one plat in the Jennings vineyard and a 9 per ct. decrease on the other; in the Miner vineyard this combination apparently resulted in a 25 per ct. increase; in the Lee vineyard in a 2-1/2 per ct. loss; in the Hamilton vineyard a 17 per ct. gain; and in the Grandin vineyard neither gain nor loss. In only two of the five vineyards in which this combination was tested was the gain great enough to pay the cost of the fertilizer applied. Similar discrepancies, or absence of profitable gain, mark the use of the other fertilizer combinations.