Effect of Foliar Fertilization on Yield,Fruit Quality and Macroelements Content in the Leaves of Granny Smith Apple Cultivar
The impact of two mineral and two organic foliar fertilizers applied in the following variants:V0——control;V1——Kristalon white——0.3 %;V2——Kristalon special——0.3 %;V3——Humustim——0.1% and V4——Biohumax——0.1%,on the yield,average fruit weight,chemical composition of the fruits (dry matter,total sugars and titratable acids) and macroelements content in the leaves of Granny Smith apple cultivar,grafted on MM 106 and planted in the spring of 1986,on leached cinnamonic forest soil,was studied.The research was carried out during the 2004-2006.It was found that the treatment by Kristalon white,Biohumax and Humustim led to yields increase by 9.67%,4.52% and 2.12%,respectively,compared to the control.Kristalon special has no positive effect on the volume of production.There was no significant difference between the variants of foliar fertilizers in the average fruit mass.The greatest percentage of extra quality fruits was obtained in the treatment with Humustim,followed by Biohumax and Kristalon special.The content of dry matter,total sugars and titratable acids was not influenced significantly by foliar fertilizer.A tendency for slightly higher content of dry matter and sugars was observed when Biohumax was used.The concentration of nitrogen,phosphorus,calcium and magnesium in the leaves was within,and for phosphorus and above the optimal levels,established for apple cultivars.Minor differences in the values of nutrients in the leaves between different variants of fertilization indicate that the type of foliar fertilizer did not have significant effect on their accumulation in the leaves.
apple yield foliar fertilizers biochemical composition quality
迪米特里·索特洛夫
保加利亚农业研究所育种研究室
国内会议
烟台
英文
169-178
2012-09-02（万方平台首次上网日期，不代表论文的发表时间）