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| I believe Boron can leach like sulfur and nitrogen so I would apply it in the spring or early summer.
It is a micronutrient so it takes way less to do the job than potassium or phosphorus.
It comes in dry and liquid form and can be applied preplant through sidedress.
If you are going to apply it I would choose the form and timing that is cheapest and most convenient to you. | |
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