Forsline, P.L., Aldwinckle, H.S., Dickson, E.E., Luby, J.J. and Hokanson, S.C. (2003) Collection, Maintenance, Characterization, and Utilization of Wild Apples of Central Asia. Horticultural Reviews: Wild Apple and Fruit Trees of Central Asia, 29, 1-62.

has been cited by the following article:

• TITLE: Physical and Biochemical Properties of Apple Orchard Soils of Different Productivities

  AUTHORS: Takamitsu Kai, Masaki Mukai, Kiwako S. Araki, Dinesh Adhikari, Motoki Kubo

  KEYWORDS: Apple Orchard Soil, Physical Properties, Biochemical Properties, Fruit Yield

  JOURNAL NAME: Open Journal of Soil Science, Vol.5 No.7, July 13, 2015

  ABSTRACT: Physical and biochemical properties of apple orchard soils of different productivities (orchard A: 30 t·haǃ orchard B: 20 t·haǃ) were analyzed. Most of the physical properties were similar in both orchards. In orchard A, the horizontal saturated hydraulic conductivity at 10-cm depth was 16.42 cm·dayǃ, and was about four times higher than that in orchard B (4.41 cm·dayǃ). Total carbon, total nitrogen, and total phosphorus were about two times higher in orchard B soil, whereas total potassium, bacterial biomass, nitrification, and phosphorus mineralization activities were similar in both orchards. Excess nutrients accumulated on the top 15 cm layer of orchard B soil because the topographical and physical conditions were associated with reduced apple productivity. Appropriate management of fallen leaves and reduction of chemical fertilizer seem necessary for a high level of apple productivity.