. Better fruit. Fruit-culture. December, 1921 THE importance of vitality and vigor in a tree in withstanding frost damage was strikingly illustrated in several orchards. In February we were inclined to think that the old neglected trees, those that had not been making a vigorous growth, were in- jured the least, but this good showing did not extend through until July. The weak trees may have been more completely dor- mant at the time of the freeze and may have been injured less, but if so they did not have the ability to recover while the more vigorous trees did. In February we visited the orc
. Better fruit. Fruit-culture. December, 1921 THE importance of vitality and vigor in a tree in withstanding frost damage was strikingly illustrated in several orchards. In February we were inclined to think that the old neglected trees, those that had not been making a vigorous growth, were in- jured the least, but this good showing did not extend through until July. The weak trees may have been more completely dor- mant at the time of the freeze and may have been injured less, but if so they did not have the ability to recover while the more vigorous trees did. In February we visited the orchard of Frank Hrubetz, south of Salem and found striking dif- ferences in the amount of injury in dif- ferent parts of the orchard. The orchard consists of 20 to 25-year-old Italian prunes and a number of old pear and other trees. Part of it had never been fertilized, and this section showed much injury in the tops of the trees, branches frozen through and dead in the crotches, especially at the base of the old pendant fruit spurs on the prunes. Another part was treated with two pounds of nitrate of soda per tree in the spring of 1918. The injury was markedly less in this section. Still another section had been treated for two years with nitrate of soda and here there was no injury at all in the tops. The prune orchard of L. T. Reynolds, north of Salem showed the same thing, much less injury on trees that had received nitrogenous fertilizer, while many trees that had not been fertilized failed to sur- vive. We carried on some spraying ex- periments in the latter orchard in 1919 and during the course of this work a number of the trees lost a considerable amount of their foliage as a result of spray injury. The winter injury on these trees located in the unfertilized section of the orchard was most severe and many of them have died. In the fertilized section these trees showed damage, hut survived. This freeze demonstrated some valuable lessons, one of the chief of which is the r
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