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Seasonal activity of ash constituents and nitrogen in the various organs of young apple trees.

, : Seasonal activity of ash constituents and nitrogen in the various organs of young apple trees.. Doklady vsesojuz. Akad. seljsk. Nauk, 17: 11, 24-9

Observations made at the Ukranian Fruit Research Institute from 1948 to 1950 have shown that the nutrient content of the various organs of an apple tree depends to a considerable extent on their age. The largest amounts of N, P and K were found in young growth containing relatively high quantities of protoplasm. In early spring, the N, P and K content, in contrast to starch, did not decrease in the roots. As the roots started to grow, they began to absorb the nutrients.


Other references

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