Hi everybody,
I sent the message below some weeks ago and received no response so I'm guessing that it got lost in the 'appleonasphere'. I'm trying again in the hope that someone may be able to assist. Many thanks. From: Lee and Vivien Williamson [mailto:[email protected]] Sent: Wednesday, 19 September 2012 11:20 AM To: '[email protected]' Subject: Senescence Hello all, Can anybody tell me when senescence in apple trees actually starts and finishes? I understand what senescence is and how it works, at least in laymen's terms, but I'm interested from the perspective of applying foliar post harvest fertilisers. When are the leaves at their most receptive in terms of absorbing the nutrients and despatching them to the roots for storage over the Winter months? Should the PHF be applied immediately after harvest or is it more advantageous to wait until the leaves have started to change colour? And if so, what shade should they be? At what point do the leaves stop absorbing the nutrients because the cells are too 'old', in other words at what point am I wasting time and money? And I imagine that it is better to apply the PHF in stages rather than in one large hit, for example, three applications of nitrogen at two percent rather than one at six percent? Any advice and insights would be greatly appreciated. Thank you all. Lee Williamson Eden Gardens Orchard Western Australia
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