Work

Autumn Foliage Applications of ZnSO4 Reduced Leaf Nitrogen Remobilization in Peach and Nectarine

Year: 1990

Type: article

Abstract: Premature defoliation of peach and nectarine (Prunus persica L. Batsch) trees resulting from foliar applications of ZnSO 4 reduced N remobilization that typically occurs during leaf senescence. Leaf N remobilization in unsprayed control trees ranged from 45% to 50%, irrespective of tree N status. Leaf N remobilization in trees receiving foliar applications of ZnSO 4 ranged from a positive influx of N into the leaf to ≈30% of the N remobilized, depending on ZnSO 4 application timing and method of expressing leaf N levels. Early ZnSO 4 applications resulted in less N remobilization. Measuring leaf N on an area basis was a more precise indicator of N remobilization than N per unit dry weight, because leaf weight per unit area changes during leaf senescence.

Source: Journal of the American Society for Horticultural Science

DOI: 10.21273/jashs.115.1.79

Authors: S.P. Castagnoli, T.M. DeJong, S.A. Weinbaum, R.S. Johnson

Institution: University of California, Davis

Language: English

Topic: Plant Physiology and Cultivation Studies

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDGs: Zero hunger, Life on land

Open Access status: gold

Estimated APC paid: $3,500