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The Rural Voice, 1983-11, Page 7of fertilizer per acre is applied but this rate varies with the size of the tree. Hartman has a number of large 25 foot apple trees which produce twenty bushels of apples per tree, but he prefers the semi -dwarf trees. Although a semi -dwarf only yields four to six bushels per tree when it reaches maturity -usually within six to eight years -an acre of land will support 200 semi-dwarts compared to only 40 large trees. There are other advantages to the semi -dwarfs as well. There are spaces between large trees which cause a chemical waste when spraying the orchard, whereas semi -dwarf trees grow close together, avoiding waste. "I prefer semi -dwarfs because of the labour savings," Hartman says, adding that "the cost of picking the semi -dwarf is cheaper because you don't have to use very tall ladders." Mice present a real problem to apple producers, chewing away the outside bark of the tree, often killing it. Guards around the base of the tree serve as protection, but often a heavy snow fall in winter allows the mice to climb over the guard and chew the bark. Cracked corn treated with zinc phosphate is put out under the trees in the fall to poison the mice. A few of Hartman's trees die each year, either because of mice or natural causes and are replaced with new plantings from the nursery stock in April. Also in April, rootstock is planted in the nursery. Different rootstocks produce different tree sizes so that an apple producer can determine the size of the tree that he wants by choosing a specific rootstock. Different apple varieties are grafted on the rootstock in late July and the producer can choose the right combination of tree variety and tree size. Hartman sells his rootstock throughout Ontario as well as in Eastern Canada and employs four full-time workers in his nursery. May is apple blossom time and in order to ensure a good pollination of the trees, Hartman has ten hives of bees brought into the orchard by a local beekeeper in the first part of May. They are left in one location to cover a large area for approximately two weeks. Different varieties of apple trees do pollinate each other, but the bees act as an insurance policy, particularly if there may not be enough wind to spread the pollen. Also in May, trees are sprayed for fungicide, an operation that occurs twelve times during the growing season. A herbicide is also sprayed under the trees to kill grass and control mice. The fertilizer can then help the trees to grow instead of the grass. Chemical thinning of apple varieties takes place in June for the trees that have a larger crop then they can handle. Weak apples fall off, leaving an ideal two apples per cluster for McIntosh and one per cluster for Northern Spy and Red Delicious. "You have to spray the apple at the right time when it is the right size," Hartman says. "Experience throughout the years is essential to know when to apply it." Summer pruning starts in July least once before it gets to the consumer and for this reason, labour costs are the greatest expense in growing apples. "An apple grower's income depends on six weeks of picking," Hartman says, and "he must have reliable workers." All local labour from the farm labour pool is used at harvest time but "we're not located in an urban area where we can draw people" he added. For this reason, growers also use workers from the off -shore labour program to supplement the local labour. In all, 3,000 individuals are brought in to help harvest the crop. As the growing and harvest season winds down for the producer, things Peter Hartman, president of the Southern Georgian Bay Fruit Growers Association: "An apple grower's income depends on six weeks of picking." when suckers are removed from the trees to let more light in, thereby colouring up the apples. Summer apples (Quinte, Wellington, Jersey Mac) are harvested in mid-August but the main apple harvest gets into full swing in September and lasts through to the first week in November. Because each McIntosh apple has to have at least 30 per cent colour if it is being sold as fresh fruit, and a minimum 21/4 inch diameter "you can't walk up to a tree and clean it; it's done in two pickings," Hartman says. "We go over everything once, then go over it again." A hand has to touch each apple at also get back to normal for Ken Wilson who is the Horticultural Crop Advisor for the Plant Industry Branch of the Ontario Ministry of Agriculture and Food. Wilson's office is located in Clarksburg and his 91/2 year involvement in the apple industry has given him a strong insight into growing conditions and problems unique to the Georgian Bay area. Wilson works on a first hand basis with apple growers, visiting orchards and offering advice. As well, he provides an "orchard hotline" whereby growers can call in and listen to a three minute tape concerning insect and disease control. Wilson THE RURAL VOICE, NOVEMBER 1983 PG. 5