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The effect of foliar spray fertilizer before leaf abscission on the nutrient condition of dormant apple trees

The effect of foliar spray fertilizer before leaf abscission on the nutrient condition of dormant apple trees

Journal of Shandong Agricultural University 29(4): 443-447

Spraying apple trees before leaf abscission with Ca2+, K+, SO42-, H2PO4-, NO3- and urea decreased the amino acid content in main roots and generally increased amino acid translocation from shoots to roots. KNO3 and B application increased and K2SO4, CaSO4, Ca(NO3)2 and KH2PO4 application decreased the soluble carbohydrate content in roots and shoots. Foliar application of the following fertilizers enhanced P content in roots and shoots: KH2PO4 > K2SO4 > urea > KNO3 or KH2PO4.

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Accession: 003301713

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