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How is climate change affecting agriculture? It depends.
“Among trees and vines, the most sensitive to climate change are walnuts, which require more chill hours. Walnut acreage would decline, Lee said, while there would be a modest change in grape and almond acreage.”
How Much N Is Needed When
The take-away? Dividing your N applications evenly over the growing season (25% in May, June, July and August) will increase nitrogen use efficiency. Whatever number of applications you apply, remember that N can only be taken up when there are leaves on the tree; the first month of growth uses stored N, not N from the soil; and N uptake is complete by the end of August
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