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Question: 1 pines depend on mycorrhizal relationships a plant nursery started...

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1. Pines depend on mycorrhizal relationships. A plant nursery started sterilizing soil before planting Christmas tree seedlings and found that those trees took on average two to three years longer than before to reach salable size. Why? 2. Many trees will die after their roots are flooded with water or have cars parked on them, compacting the soil. Why? 3. People often spread fertilizer under large trees to make them grow even faster. Sometimes they put the fertilizer close to
the trunk, thinking it will be absorbed faster. Why is this erroneous thinking? tti
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