Open AccessEffects of Soil-Applied and Trunk and Petiole-Injected Manganese on Manganese Content of Coconut Palm (Cocos nucifera)
Author(s) -
Timothy K. Broschat,
Joseph J. Doccola
Publication year - 2010
Publication title -
arboriculture and urban forestry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.222
H-Index - 47
eISSN - 2155-0778
pISSN - 1935-5297
DOI - 10.48044/jauf.2010.035
Subject(s) - manganese , petiole (insect anatomy) , palm , trunk , calcareous , horticulture , cocos nucifera , soil water , chemistry , biology , botany , agronomy , ecology , hymenoptera , physics , organic chemistry , quantum mechanics
Manganese deficiency is a common and potentially fatal disorder of palms growing in highly leached and calcareous soils. Soil applications of MnSO4 may not always be effective in treating this disorder due to rapid oxidation of Mn to less available forms. Trunk injection with MnSO4 (2.0 g Mn) was found to be more effective in increasing foliar Mn concentrations than soil application (192 g Mn) or petiole injections with 0.1 g Mn in a single hole, or 0.5 g Mn divided among four holes. In contrast to trunk injection, neither petiole injections nor soil application of MnSO4 increased foliar Mn concentrations above that of the untreated control palms. Trunk injections, while effective, result in permanent wounds that could potentially serve as entry sites for the trunk pathogen Thielaviopsis paradoxa, especially on young palms with minimal trunks.