Can I read Fate of 15N-labelled nitrogen fertilizer applied to kiwifruit (Actinidia deliciosa) vines: II. Temporal changes in 15N within vines on EtoBox?

Fate of 15N-labelled nitrogen fertilizer applied to kiwifruit (Actinidia deliciosa) vines: II. Temporal changes in 15N within vines by S. F. Ledgard; G. S. Smith is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Fate of 15N-labelled nitrogen fertilizer applied to kiwifruit (Actinidia deliciosa) vines: II. Temporal changes in 15N within vines about?

Temporal changes in the nitrogen (N) and 15N content of various components of six-year-old kiwifruit (Actinidia deliciosa 'Hayward') vines which had received 15N-labelled ammonium fertilizer were measured. The fertilizer was applied singularly at 100 or 200 kg N ha 1 in early spring (two weeks before bud burst) or split with 100kg N ha -1 (unlabelled) in early spring and 100kg N ha -1 (15N-labelled) ten weeks later. All treatments were applied to vines with a history of either 50 or 200 kg N ha -1 yr -1. The N concentration of leaf and fruit tissue was generally lower in the 100 kg N ha-1 treatment than in the 200 kg N ha-1 treatments and this effect was greater than that of N fertilizer history. During the first 8 weeks after bud burst there was a rapid accumulation of N in leaves (ca. 80 kg N ha-l). Analysis of xylem sap at 4 weeks after bud burst revealed that about 60% of the N utilised for new growth was from remobilisation of N stored within the vines and about 40% from soil and fertilizer N. This was unaffected by rate of N application. Plant uptake of added 15N was rapid and almost complete within 10 weeks of application in either early spring or early summer. Initially, mo

Who reads Fate of 15N-labelled nitrogen fertilizer applied to kiwifruit (Actinidia deliciosa) vines: II. Temporal changes in 15N within vines?

Author

S. F. Ledgard; G. S. Smith

Publisher

Springer; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0032-079X)

Published

1992

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)