Response of Stargrass to K fertilization as affected by liming, N and K sources
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Keywords

Stargrass--Yields--Puerto Rico
Forage--Yields--Puerto Rico
Nitrogen fertilizer
Liming
Soil fertility

How to Cite

Abruña, F. (1987). Response of Stargrass to K fertilization as affected by liming, N and K sources. The Journal of Agriculture of the University of Puerto Rico, 71(1), 23-31. https://doi.org/10.46429/jaupr.v71i1.6921

Abstract

The effect of liming and sources of K and N on the response of Stargrass to potassium fertilization was studied on a Typic Tropohumults. Stargrass responded with up to 1,500 kg/ha of K with or without liming, when (NH4)2SOwas the source of N, but responded only to 500 kg of K/ha when urea was the source of N. Liming increased the response of Stargrass to K Fertilization when (NH4)2SO4 was the source of N, but only at the highest rate when urea was used. The source of K had no significant effect on yields of Stargrass. More K accumulated in the soil but percentage recovery of applied K decreased as the rate of application increased. More K accumulated in the soil when KCI was the source of K. Marked changes in soil acidity factors occurred as a result of heavy fertilization with (NH4)2SO4.

https://doi.org/10.46429/jaupr.v71i1.6921
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