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Named after John MacAdam, who first described them. They thrive on the subtropical coasts of eastern Australia.
- FRUIT: consist of a fibrous outer covering, a brownish spherical shell and a cream-colored kernel about the size of a ball. It bears fruit from the 5th year.
- NUTRITIONAL VALUE: of high nutritional value as they contain many trace elements such as magnesium, calcium, iron, zinc, selenium, copper but also tocopherols, phytosterols and squalene. They contain a large amount of monounsaturated fatty acids that give them their special texture.
- ENVIRONMENTAL CONDITIONS: In northern areas the plants should be kept in a heated greenhouse for about 2 years until they harden off. They thrive in deep, well-drained soils with plenty of moisture and protection from strong winds for the first time. The soil should be loose and with a pH of 4.5 to 8. The ideal temperature is 16-25°C and they can survive below 3°C but there is a risk of losing part of the production. The recommended altitude is 90-300 meters above sea level, while growth above 600 meters is slow and production is delayed.
- PLANTING SPACES: The ideal combinations are: 3.5 X 7m, 2.5 X 5m, 10 X 6m.
- FERTILIZATION: zinc oxide in 200 g / 100 liters of water or NZN in 150 ml / 100 l of water. Many orchards are low in boron and it is desirable to spray every 2 years with 100 g borax / 100 l water.
- IRRIGATION: Lack of water often limits the growth of trees and fruits