Titre du document / Document title

Effects of iron source on iron chlorosis and Exserohilum leaf spot severity in Wodyetia bifurcata

Auteur(s) / Author(s)

BROSCHAT Timothy K. ⁽¹⁾ ; ELLIOTT Monica L. ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ University of Florida, Fort Lauderdale Research and Education Center, 3205 College Avenue, Fort Lauderdale, FL 33314, ETATS-UNIS

Résumé / Abstract

Foxtail palms (Wodyetia bifurcata Irvine) were grown in 6.2-L containers using a 3 calcitic limestone gravel: 2 coir dust (by volume) substrate to induce Fe chlorosis. Plants were treated initially and 2 and 4 months later with soil applications of FeDTPA, FeEDDHA, FeEDTA+FeHEDTA on vermiculite, FeEDTA+FeDTPA on clay, ferric citrate, ferrous ammonium sulfate, ferrous sulfate, ferrous sulfate+sulfur, or iron glucoheptonate at a rate of 0.2 g Fe/container. Similar plants were treated initially and 2 and 4 months later with foliar sprays of FeDTPA, FeEDDHA, ferric citrate, ferrous sulfate, or iron glucoheptonate at a rate of 0.8 g Fe/L. After 6 months, palms receiving soil applications of FeEDDHA, FeEDTA+FeHEDTA on vermiculite, FeDTPA, or FeEDTA+FeDTPA on clay had significantly less chlorosis than plants receiving other soil-applied Fe fertilizers or untreated control plants. Palms treated with foliar Fe fertilizers had chlorosis ratings similar to untreated control plants. Palms with the most severe Fe chlorosis also had the highest levels of leaf spot disease caused by Exserohilum rostratum (Drechs.) K.J. Leonard & E.G. Suggs. Neither chlorosis severity nor leaf spot severity was correlated with total leaf Fe concentration.

Revue / Journal Title

HortScience   ISSN 0018-5345   CODEN HJHSAR 

Source / Source

2005, vol. 40, n^o1, pp. 218-220 [3 page(s) (article)] (15 ref.)

Langue / Language

Anglais

Editeur / Publisher

American Society for Horticultural Science, Alexandria, VA, ETATS-UNIS  (1966) (Revue)

Mots-clés anglais / English Keywords

Sulfur compounds ; Inorganic anion ; Iron ; Citrate ; Ammonium sulfate ; Sulfates ; Horticulture ; Chelation ;

Mots-clés français / French Keywords

Soufre composé ; Anion minéral ; Fer ; Citrate ; Ammonium sulfate ; Sulfate ; Horticulture ; Chélation ;

Mots-clés espagnols / Spanish Keywords

Azufre compuesto ; Anión inorgánico ; Hierro ; Citrato ; Amonio sulfato ; Sulfato ; Horticultura ; Quelación ;

Mots-clés d'auteur / Author Keywords

palm ; foxtail palm ; ferrous sulfate ; ferrous ammonium sulfate ; ferric citrate ; FeEDDHA ; FeEDTA ; FeHEDTA ; FeDPTA ; iron glucoheptonate ; chelate ;

Localisation / Location

INIST-CNRS, Cote INIST : 13300, 35400012656568.0520