. Better fruit. Fruit-culture. Page Eight BETTER FRUIT February, 1922 Orchard Spray Prog-ram for 1922 THE orchard man must fight for his crop against a considerable number of pests and diseases that are always on the job, and it is a fact, demonstrated every season, that the fruit grower cannot win in this fight unless he is likewise ever- lastingly on the job. His orchard enemies are fiendishly efficient, taking advantage of every opportunity offered to make their attack, and it is necessary to plan the spray campaign with the greatest care and execute it effectively so as to head off every t
. Better fruit. Fruit-culture. Page Eight BETTER FRUIT February, 1922 Orchard Spray Prog-ram for 1922 THE orchard man must fight for his crop against a considerable number of pests and diseases that are always on the job, and it is a fact, demonstrated every season, that the fruit grower cannot win in this fight unless he is likewise ever- lastingly on the job. His orchard enemies are fiendishly efficient, taking advantage of every opportunity offered to make their attack, and it is necessary to plan the spray campaign with the greatest care and execute it effectively so as to head off every thrust of the opponent. The spraying program is a program of prevention. It aims to prevent the activities of these orchard pests and diseases almost entirely by covering the fruit, leaves or frame-work of the tree with a material poisonous to them, so they will have no avenue of entry. Failure is due in many instances, to lack of understanding of the proper weapon to employ and the proper time to employ it. A spray calendar, such as the one appear- ing here, is intended as an aid to the grower in these particulars, but there are a few pointers that may be added as aids to complete effectiveness. Iron Sulfate as Indicator—With the dilute lime-sulfur sprays it is rather difficult to determine just how thoroughly the foli- age is being covered or the fineness of the droplets reaching the tree. By adding iron sulfate at the rate of half a pound, dissolved in water, for each gallon of con- centrated lime-sulfur used, the spray is turned black without the effectiveness be- ing destroyed and the operator can tell at a glance just how well his work is being done. Many growers use this method in the scab sprays with satisfying results. Amount of Spray Required—It takes a certain amount of spray to give satis- factory protection to a tree. LeRoy Childs, of the Hood River Branch Experiment Station, has determined by a survey of some of the best orchards in his section that it takes, o
Size: 1370px × 1824px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcollect, bookcollectionbiodiversity, booksubjectfruitculture
