Nutritional Deficiencies/Disorders of Sugarcane
This topic covers the information related to Nutritional / Physiological Disorders of Sugarcane
- Die back of older leaves. Leaf blades turn light green to yellow. Short and slender stalks. Tips and margins of older leaves become necrotic.
- Management: Soil application of N fertilizer or foliar spray of urea 1-2% twice at weekly interval.
- Red and purple discolouration of tips and margins, Slender leaves. Short sand slender stalks. Poor or no tillering
- Management: Foliar spray of DAP 2% twice at fortnight interval.
- Yellow-orange chlorosis of leaf borders & tips. Stalks slender. Older leaves brown or “fi red”. Spindles distorted producing “bunched top” or “fan’ appearance.
- Management: Foliar spray of KCL 1% twice at fortnight interval.
- Mottling and chlorosis of older leaves. Spindles often become necrotic at the leaf tip and long margins. Rusty appearance and premature death of older leaves
- Management: Soil application of 25 Kg/acre of gypsum
- Mottled or chlorotic appearance at the tip and margins. Red necrotic lesions resulting in “rusty” appearance. Internal browning of rind
- Management: Soil application of MgSO4 10 Kg/acre or foliar spray of MgSO4 2% twice at fortnight interval.
- Chlorotic young leaves. Narrower and shorter leaves with faint purplish tinge. Slender stalks
- Management: It is advisable to use sulphur containing fertilizers: Ammonium Sulphate - 24% S. Single Super Phosphate - 12% S. Potassium Sulphate - 18% S. Gypsum - 13-18% S . Any one of the above fertilizers at the rate of 4-8 Kg/acre.
- Green splotches with leaves eventually showing bleaching. Stalk and meristems lack turgidity. Reduced inter-nodal length and tillering.
- Varying degrees of chlorosis. Interveinal chlorosis from tip to base of leaves.
- Management: Soil application of 10 Kg/acre of FeSO4 or foliar spray of FeSO4 0.5% on 90, 105 and 120 days after planting.
- Occurrence of interveinal chlorosis from leaf tip towards the middle of leaf. Bleaching of leaves under severe deficiency.
- Distorted leaves. Formation of translucent lesions or water sacks along leaf margins. Brittle and bunched with many tillers. Death of apical meristem.
- Short longitudinal chlorotic streaks on the top one-third of the leaf. Short and slender stalks. Slow vegetative growth
- Management: Application of Ammonium Molybedate (54% Mo) and Sodium Molybdate (39% Mo) are common sources of Mo to rectify its deficiency in soils and crops.
- Midrib and leaf margin remain green and yellowing of leaf blade. Red lesions on leaves. Reduced tillering and shorter internodes. Thin stalks with loss of turgidity.
- Management: Soil application of 15 Kg Zinc sulphate/acre before the last ploughing.
IPM for Sugarcane
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