NITROGEN STRATEGY: SPOON-FEED OR NOT
Recent research at North Carolina State University suggests that, in the long run, turf response to spoon-feeding and fertigation is not much better than intermittent nitrogen (N) application. The idea behind spoon-feeding and fertigation is to offer turf a continual supply of N with small, frequent applications. The intent is to avoid a flush of growth that is associated with less frequent, heavier applications of soluble nitrogen. Although this makes sense, researchers wanted to determine the practical significance and whether this strategy offers any long-term benefit to turf in comparison to intermittent application. Researchers conducted a greenhouse study to compare perennial ryegrass (Lolium perenne L.) turf response to constant feeding under solution culture versus soluble nitrogen application on a less frequent, intermittent schedule (8, 16 and 32 days). Perennial ryegrass was grown in solution culture and fertilized daily with KNO
Source: Crop Science 43:631-638 (2003), “Daily vs. Periodic Nitrogen Addition Affects Growth and Tissue Nitrogen in Perennial Ryegrass Turf,” D.C. Bowman.
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