Trees, Fruits and Flowers of Minnesota, 1916. Various

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СКАЧАТЬ reported an orchard location entirely at the base of a slope, but six reported orchards extending from the base to the top of the slope, two from the base to midway of the slope, twenty-five at midway of the slope, seven from midway to the top and twenty-two at the top of a slope—the high ground evidently being preferred for orchard sites. As a general rule, as would naturally be expected, those who reported their orchards on the top of the slope usually reported their ground as either high or medium. Of ninety-six reports on the elevation of the orchards only four reported low land, and two of these were on top of a slope, two low and medium, one low and high, forty-six medium, fourteen medium and high, and twenty-seven high—the medium taking the lead. These figures have been given of the state as a whole, but when the sections are considered the southeastern and the west central take the lead in the highest percentage of high ground in comparison with the lower ground; the southeastern and east central, for the greatest amount of rolling land; and the southwestern, for the most level or nearly level land.

       Down the long row. View in well cared for orchard of J. M. Barclay, Madison Lake.

      As for the effect of direction of slope on hardiness, there were many varied opinions. Thirty stated without question that the direction had an effect, thirty-one stated that it had no effect, and seventy-two admitted that they did not know. Of those answering in the affirmative only seven had two or more distinctly different slopes, while fifteen of the negatives had two or more slopes for comparison. Nine of those who stated they didn't know had two or more slopes upon which to base their judgment. In summing up the direction of sites preferred, seventy-seven recommended a northerly slope, nine had no preference, one preferred southeast, one west, one west and east, two east, one north and east, one northeast or east, and sixty-four expressed no opinion. Two growers stated that the north slope prevented early bloom and thereby lessened liability to injury from late frosts, two growers stated that northern slopes decreased the loss of moisture, and one stated that the northeast slope gives the largest fruit and the west the best colored.

      As a brief summary of the reports on orchard sites, it may be stated that high ground, rolling or sloping to the north, is preferred by the majority of growers who filled out these orchard survey blanks.

      Protective Agencies. Under this heading comes windbreaks of all kinds, whether hills, natural timber or planted trees, and bodies of water which ameliorate the climate. Out of fifty-four replies from the central east section, sixteen reported that their orchards were favorably affected by lakes, the benefit coming in most cases from the prevention of early and late frosts. One grower attributed the cooling of the air during the summer as a benefit and two stated that the bodies of water furnished moisture. Two growers in the southeast section received favorable influences from the Mississippi River, and one in the southwestern and two in the west central sections thought they received beneficial effects from lakes. According to this data, orchards in the east central section, owing largely to the influence of Lake Minnetonka, are greatly benefited by the presence of water.

      Windbreaks are a very important factor in successful orcharding in Minnesota, even though one party in the southeast section and three parties in the central east noted no beneficial effects. According to reports from the central west and southwest sections they are of great benefit and in some cases indispensable to apple growing. As would be expected by any one who is acquainted with Minnesota, the planted windbreaks are a more important factor in the prairie country than in the natural wooded and hilly regions. In the southeast section, five orchards were reported as protected by bluffs and hills, three by both hills and natural woods, two by natural woods, two by both natural and planted woods, and twenty-one by planted woods; in the central east section, one by a hill and a planted windbreak, one by a town, fifteen by natural timber, two by natural and planted timber, and nineteen by planted windbreaks; in the northeast section, two by natural and four by planted windbreaks; in the northwest section, three by natural and two by planted windbreaks; in the west central section, one by a hill and natural timber, five by natural timber, two by natural timber and planted windbreaks, and eighteen by planted windbreaks; and in the southwest section, one by a hill and natural woods, one by a hill and planted windbreak, two by natural timber, and fifteen by planted windbreaks. If Meeker County, which has natural timber, was not included in the central west—and perhaps it should have been included in central east—this section would have only one orchard protected alone by natural timber; and if Blue Earth County was eliminated from the southwest, this section would have no orchard protected alone by natural timber.

      The beneficial effects from windbreaks may be summed up as follows: Twenty-five reported that they prevented fruit from being blown off trees, nine that they prevented trees and limbs being broken by winds and storms, ten that they protected trees from injury by winds without specifying the kind of injury, four that they reduced injury from frosts, ten that they either prevented or reduced winter injury, four that they helped to retain moisture, five that they helped to hold snow, eight that they prevented snow drifting, five that they protected orchards from hot and dry winds, three that they permitted the growing of apples, and one that they supplied all advantages.

      The kinds of trees recommended for windbreaks and the methods of planting are numerous and variable and to discuss them at length would take too much time. However, the principal facts may be briefly enumerated.

      In eighty-five reports that listed set out windbreaks, it was found that fifty-seven growers had used evergreens, thirty-seven willows, twenty-nine box elders, twenty-five maples, seventeen cottonwoods, thirteen ashes, eleven elms, eight poplars, four oaks, four plums, three nuts and one apple. The evergreens consisted of thirteen Scotch pine, eleven evergreens (not named), eight Norway spruce, five spruce (not named), three balsam, three Austrian pine, two white pine, one yellow pine, two cedar, two white spruce, two pine (variety not named), two fir, two jack pine, one Black Hills spruce, and one tamarack. In the willows were given twenty willows (variety not named), two laurel-leaved, seven white and eight golden; in the maples, sixteen soft maples, two hard maples, one silver-maple and six maples (kind not named); in the poplars, five Norway, one Carolina, two poplar (kind not named); and in the nuts, one black walnut, one butternut and one walnut. The major part of the box elders, cottonwoods, willows and ashes were noted in the central west and southwest sections. Thirty-seven experienced growers of windbreaks, the most of them living in the southwest, west central and southeast sections, recommended the following trees for windbreaks in the given proportions, twenty-four evergreens, fifteen willows, seven maples, six poplars, five elms, five box elders, three elms, two plum, two cottonwood, three hedges, one oak, one hackberry and one black walnut. The evergreens are decidedly the most popular, and among the varieties mentioned Norway spruce takes the lead for those recommended, and the Scotch pine for those planted.

      There are about as many different systems of planting used as growers. The main point in all cases was to have a planting that would stop the wind and storms. A few growers advocated the use of a hedge or plum trees to fill in under the windbreak, while one grower desires a circulation of air under the branches of his trees. Cultivation and intercropping of windbreaks are also recommended in a few cases. The distance of planting varies, of course, with the trees or shrubs used. For example: one grower recommends 8 ft. x 8 ft. for large deciduous trees, and another grower, 6 ft. x 12 ft. apart in rows and two rows, 12 ft. apart. For Scotch pine one grower advocates eight feet. In some cases a mixture of many kinds of trees is recommended, and then again only one kind. One very solid windbreak is made up of a lilac hedge, four rows of jack pine, four rows of Norway poplar and one row of willow. Another is one row willow, one of evergreen, one of willow and one of evergreen.

      Various distances between windbreak and orchard were used and recommended. A large number of orchards were started at about twenty feet from the windbreak and a few as close as one rod, but these distances proved to be too close. One grower, however, recommended close planting and later the removal of a row of trees in the windbreak when more space was needed. The recommended distances for planting varied from thirty to 500 feet, СКАЧАТЬ