12
TURFGRASS CARE
and water relations. Turfgrass
growth slows, crown density
is reduced and leaf blades
become chlorotic (yellow)
when nitrogen is deficient.
Excess nitrogen stimulates
excessive shoot growth
while limiting root growth.
Additionally, some disease
pathogens are impacted by
deficient or excess nitrogen.
Excessive water increases
disease pressure, which
impacts nitrogen relations.
Excessive water also results in
nitrogen loss through leaching/
runoff to water bodies and
volatilization/ denitrification.
Excessive nitrogen fertilization,
which is common, increases
water needs and vice versa.
Alternatively, nitrogen deficient
Urea, also called Carbamide, the diamide of
carbonic acid. More than 90 percent of world
industrial production of urea is destined for
use as a nitrogen-release fertilizer
Ammonium sulfate was one of the first and
most widely used nitrogen fertilizers for crop
productiom. It is used primarily where there
is a need for supplemental N and S to meet the
nutritional requirement of growing plants.
