Work

Effect of Interactions of Calcium, Potassium and Manganese Supply on ‘Delicious’ Apple Trees as Related to Internal Bark Necrosis1

Year: 1976

Type: article

Abstract: A greenhouse solution culture experiment was conducted to study the interactions of Ca, K and Mn supply on the concentration of 7 elements in bark tissues of ‘Delicious’ apple ( Malus domestica Borkh) trees as related to internal bark necrosis (IBN). Under a regime of low Ca and high Mn, IBN symptoms developed late in the second growing season on the scion barks but not on the rootstock bark. Both the degree of severity and the incidence of the disorder increased with increasing K levels. Low Ca and high Mn concentrations in the barks are apparently necessary for the development of IBN, and under these conditions K affects the degree of severity. It is suggested that the higher K concentrations enhanced Mn toxicity by lowering the threshold for Mn-induced IBN, while Ca responded as a detoxifying agent. Low concentrations of B and P may contribute to IBN development, while Mg and Fe were not related to symptom development.

Source: Journal of the American Society for Horticultural Science

DOI: 10.21273/jashs.101.1.44

Authors: P. A. Domoto, A. H. Thompson

Institution: University of Maryland, College Park

Language: English

Topic: Plant Physiology and Cultivation Studies

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: hybrid

Estimated APC paid: $3,500