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Effect of Nitrogen and Phosphorus Placements and Rates on Turfgrass Establishment 1
Author(s) -
King J. W.,
Skogley C. R.
Publication year - 1969
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1969.00021962006100010002x
Subject(s) - loam , phosphorus , nitrogen , agronomy , fertilizer , field experiment , chemistry , ammonium , ammonium nitrate , environmental science , zoology , soil water , biology , soil science , organic chemistry
The effects of several rates, ratios, and placements of nitrogen and phosphorus on bluegrass‐red fescue turfgrass establishment were investigated. Fall and spring field trials were conducted on Bridgehampton silt loam of low fertility. The fertilizer placement treatments were ( 1 ) surface applied, (2) mixed into the‐upper 10 cm of soil, and (3) 3/4 mixed into the upper 10 cm of soil and 1/4 surface applied. Phosphorus in the form of superphosphate was applied at rates of 490, 980, 1,960 and 3,920 g of phosphorus/100 m 2 . Nitrogen in the form of ammonium nitrate was applied at rates of 375 and 1,470 g of nltrogen/100 m 2 . The effects of establishment treatments lasted for only a few months. Initially, the higher nitrogen rate resulted in improved turfgrass quality and top growth. No seedlling injury from the 1,470‐g nitrogen rate was observed. The surface and 3/4‐1/4 fertilizer placements produced equally satisfactory results. Response to phosphorus levels was inconsistent. No significant differences in root weights were detected. Applications of maintenance fertilizer resulted in great improvement in turfgrass quality and top growth.