EFFECT OF UREA, AMMONIUM AND NITRATE ON FOLIAR ABSORPTION OF FERRIC CITRATE

abstract

• Foliar absorption of 59Fe-ferric citrate, with all possible combinations of urea, ammonium and nitrate, by Vigna unguiculata was studied. A significant increase in absorption was observed with a ferric citrate, urea and ammonium nitrate mixture and a ferric citrate and urea mixture. Some of the other urea containing mixtures did not exhibit enhanced absorption. The addition or subtraction of ammonium and/or nitrate was without a consistent effect None of the combinations of ferric citrate, urea, ammonium and/or nitrate greatly enhanced the re-greening response compared to ferric citrate applied alone, nor did any of the mixtures tested cause complete re-greening and alleviation of iron chlorosis. These results may indicate a slight, but inconsistent, benefit from adding urea to Fe foliar sprays of ferric citrate. 1988, Taylor & Francis Group, LLC. All rights reserved.

authors

• Reed, David

published proceedings

• JOURNAL OF PLANT NUTRITION

altmetric score

• 3

author list (cited authors)

• REED, D. W.

citation count

• 7

complete list of authors

• REED, DW

publication date

• January 1988

publisher

• Taylor & Francis  Publisher

published in

• Journal of Plant Nutrition  Journal

Digital Object Identifier (DOI)

• 10.1080/01904168809363899

start page

• 1429

end page

• 1437

volume

• 11

issue

• 6-11

URL

• http://dx.doi.org/10.1080/01904168809363899