1. The sap flows about a month later than maple sap, and much faster. 2. Scientific studies were done with moisture, light, and sap flow sensors. 3. The clear sap flows into buckets made from folded birch bark. 4. The fragrant saps flow through laurel sumac all year to supply the leaves. 5. They inserted probes to measure sap flow speed and direction. 6. Traditional methods of observating hydraulic redistribution include Deuterium isotope traces, sap flow , and soil moisture. 7. The sap flows later in the season than maples. 8. The sap flows in miles of practical blue plastic tubing that runs from tree to tree. 9. Egg hatching of these treehoppers are tied in to the sap flow of their host plants. 10. When spring arrives too early the sap flows too short a time for a good harvest.
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