Answer: You may be having a pollination problem, though with the orchards around you I would think there would be plenty of bees. Tomatoes, for example, are not pollinated by insects but by wind and/or simple gravity (the pollen simply drops onto the receptive female flower part). So you may have another problem. Too much nitrogen fertilizer can encourage lush growth at the expense of flowers and fruit. Adverse weather can inhibit fertilization -- including excessively wet or dry weather, and cold or hotspells.
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