Full TGIF Record # 23619
Item 1 of 1
Publication Type:
i
Refereed
Author(s):Williams, M. Coburn; Smith, Burton J.; Lopez, Rafael V.
Author Affiliation:Williams: Plant Physiologist U.S. Department of Agriculture, Agricultural Research Services, Poisonous Plant Research Lab, Logan Utah; Smith: Extension Specialist in Livestock and Pasture Management, University of Hawaii, Kamuela, Hawaii; and Lopez: Agronomist, Haras Cerro Punta, Republic of Panama
Title:Effect of nitrogen, sodium and potassium on nitrate and oxalate concentration in kikuyugrass
Source:Weed Technology. Vol. 5, No. 3, July-September 1991, p. 553-556.
Publishing Information:Champaign, IL: Weed Science Society of America.
# of Pages:4
Keywords:TIC Keywords: Nitrogen; Sodium; Potassium; Nitrates; Pennisetum clandestinum; Poisonous plants; Urea; Fertilizers; Toxicity; Poisoning
Abstract/Contents:"Kikuyugrass was analyzed for nitrate (expressed as KNO3) and soluble oxalate concentration after it was grown for 8 wk in nutrient solution supplemented with KCl, NaCl, or NH4NO3; fertilized in the greenhouse with urea and KNO3 at 112 kg N ha-1; and fertilized in the field in Hawaii and Panama with urea at 56 and 112 kg N ha-1. Both treated and untreated kikuyugrass grown in nutrient solution contained toxic levels of nitrates and soluble oxalates. Plants treated with urea in the greenhouse contained 0.4% nitrate (nontoxic) 72 h after treatment whereas those treated with KNO3 contained 2.36% nitrate (highly toxic). Fertilization of kikuyugrass with urea in Panama and Hawaii did not significantly affect soluble oxalate concentration, but nitrate concentration increased to potentially lethal levels (over 1.5% as KNO3, dry wt) in plants from Hawaii"
Language:English
References:10
See Also:Other items relating to: Potassium
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Williams, M. C., B. J. Smith, and R. V. Lopez. 1991. Effect of nitrogen, sodium and potassium on nitrate and oxalate concentration in kikuyugrass. Weed Technol. 5(3):p. 553-556.
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