Leaf optimal Ranges
Australia: Agrilink, Avocado Information Kit, 2001. Department of Primary Industries, Queensland p 3-30.
California: Abstract from updated Leaflet 2024, Division of Agricultural Sciences, University of California. 5/78.
New Zealand: R J Hill Laboratories Ltd. http://www.hill-labs.co.nz/Files/PDFs/3429v2.pdf
Soil
Australia: Agrilink, Avocado Information Kit, 2001. Department of Primary Industries, Queensland, p 3-11.
California: Fruit Growers Lab., Santa Paula
New Zealand: R J Hill Laboratories Ltd. http://www.hill-labs.co.nz/Files/PDFs/3429v2.pdf
Nutrient Information
Tisdale S.L., W.L. Nelson and J.D. Beaton. “Soil Fertility and Fertilizers” Fourth Edition, 1985.
Western Fertilizer Handbook, Eight Edition, 1995, Produced by Soil Improvement Committee, California Fertilizer association.
Marschner Horst. “Mineral Nutrition of Higher Plants”, Second Edition, 1995; Academic Press.