Re: foliar or soil drench
It all comes down to total amount of nutrients delivered to the plant. You can choose to deliver them by foliar spray or soil drench. Since there is more capacity for storage and uptake in the soil, it takes many more foliar applications to deliver the same amount of nutrients as applied to the soil. Since I use a water-soluble fertilizer, I also spray some on the leaves when applying a soil drench.
The optimal time for foliar application is in the early morning when the plants pores are open to accept dew from condensation.
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