Plant Physiology

Precision Plant Nutrition

Best Fertilizer for Olive Trees: The 2026 Protocol for Maximum Oil and Fruit

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A split-screen photograph showing a healthy olive branch loaded with ripening fruit on the left, contrasted with an agricultural laboratory setting featuring soil testing equipment and data analysis on the right.

📊 2026 Olive Feeding Calendar Northern Hemisphere: March–April: High-N (21-0-0). May: Foliar Boron at 5–10% bloom. July: Balanced NPK (10-10-10). August–September: High-K (0-0-50, Potassium Sulfate only). Southern Hemisphere: September–October: High-N. November: Foliar Boron. January: Balanced NPK. February–March: High-K before harvest. The Boron Secret: Why Most Olive Groves Fail at Fruit Set Boron (B) is the

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Precision Plant Nutrition

How to Fix Nitrogen Deficiency in Plants: The 2026 Recovery Protocol

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Scientific comparison of a healthy deep green tomato plant vs. a nitrogen deficient plant with yellowing lower leaves (2026 Recovery Protocol).

📋 The 24-Hour Recovery Protocol Nitrogen deficiency shows as yellowing older leaves while new growth stays green. This happens because nitrogen is mobile—the plant cannibalizes its lower leaves to feed new growth. Apply fish emulsion (5-1-1) at a dilution of 1 tablespoon per gallon as a foliar spray or root drench for visible improvement within

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