spraying flowers against powdery mildew plant diseases. the concept of white plaque on the leaves of plants. copy space for text

agriculture ammonia ammonium background blight carbamide chloride chlorosis concept copy disease diseases dosing economy farming fertilizer flowers garden green hartshorn harvest leaves mildew mixture nutrition orange pale pallid photosynthesis plant plants plaque powdery rural solution space spray sprayer spraying spring summer text topdressing urea water white