Nickel Plus® for Cotton
LLC has developed a foliar nickel fertilizer called Nickel Plus for cotton. Nickel Plus improves nitrogen efficiency
in crops where urea nitrogen is applied. Nickel Plus contains 5.4% nickel as nickel lignosulfonate and 10% nitrogen
to assure efficient absorption by the foliage. Nickel has been known to be an essential plant micronutrient since the late
1980's but was not recognized by the American Association of Plant Food Control Officials until 2004.
Coastal plain soils in the southeastern US contain very little nickel and fertilizer practices do not contribute supplemental
nickel to crops. In the southwest, alkaline soils cause nickel to be unavailable to the roots.
Nitrogen is the
most important cotton nutrient. Nickel is required by the urease enzyme in plants for the efficient conversion of urea
nitrogen to ammonia. When the foliar concentration of nickel is less than 2.5 ppm Ni, the conversion of urea to ammonia
is less efficient.
Symptoms of inadequate nickel nutrition include:
● pale green and
● reduced growth, vigor and flowering
● reduced number of feeder roots
Rate and timing: Apply 8 oz/acre
at pin head square or at 4 oz/acre in combination with the first and second application of a growth regulator used to control
excessive vegetative growth.
Nickel has been extensively studied in other crops and has several significant roles
in plant growth and development. Key benefits in cotton include:
● Improved nitrogen efficiency
● Stimulates natural defenses against plant diseases
● Improved plant
vigor and yield