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Experts to the contrary notwithstanding, Professor Stout believes that broadcasting dry fertilizer to trees is surer, sounder, more economical practice than punching it down. He concedes that where tree food is broadcasted, spike-rolling the sod might be wise to speed the fertilizer's movement downward, and that when the needle or punch-bar methods are used, their efficacy can be improved by doubling the points in the usual pattern—i.e., putting them only one foot apart instead of two—and halving their depth, to nine to twelve inches. Mr. Stout believes that most tree feeding is more arbitrary and haphazard than it might be. He recommends that before any feeding is done in their grounds, home owners dig some test holes to find out just how their soils lie and their tree roots run, then serve them accordingly. |
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