C depletion and tree dieback in young peach trees: a possible consequence of N shortage?

Table 1 Spring N uptake (mg ¹⁵N tree⁻¹) as a function of treatment and harvest date

	0 N trees	Limited trees	Control trees
Harvest 1	42 a ± 8.1	1154 a ± 220	1370 a ± 67
Harvest 2	78 b ± 40	1349 a ± 323	2004 b ± 25

The numbers are means and standard errors of two (harvest 2, 0 N trees), three (limited and control trees) or four (harvest 1, 0 N trees) replicates. The effect of harvest date was tested for each treatment, by randomisation tests based of the generation of 2500 random orders. It was significant (5 % level) if coded with different letters. The effect of treatment was not tested due to the important difference between the 0 N and fertilised trees

ISSN: 1297-966X