How many walnut trees are planted on 1 acre?

  One of the most curious issues for farmers who are going to start growing walnuts is the question of how many walnut seedlings should be planted on an acre.  The recommended optimal distance for planting walnut seedlings is a distance of 7 meters by 5 meters, and when using a distance of 5 meters by 7 meters, 28 seedlings of walnut trees are planted on an acre.  If asked how many walnut trees are planted in 1 dunam, 28 seedlings will be planted..