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Publication Type:
| 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
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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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