बिरुवाका रोग किरा पहिचान गरी सही उपचार विधि अपनाउनुहोस्। ढुसीजन्य, जीवाणुजन्य, भाइरस रोग र किराहरूको जैविक तथा रासायनिक उपचार।
Characteristic purple or reddish-purple coloring on undersides and sometimes upper surfaces of leaves due to anthocyanin accumulation. Stunted growth, delayed maturity, and poor root development. Dark green dull coloration of older leaves before purpling.
Low soil phosphorus levels, cold soil temperatures (phosphorus uptake stops below 10 degrees C), acidic soils (pH < 5) or very alkaline soils (pH > 8) where phosphorus is fixed and unavailable, and compacted soils limiting root growth.
Apply rock phosphate or single super phosphate (SSP) as basal dose before planting; maintain soil pH 6.0-7.0 for optimal phosphorus availability; deep tillage to improve root penetration.
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