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Crop Protection & Pesticides

Streptocycline Bactericide: Composition, Uses & Plant Diseases

Streptocycline is an agricultural bactericide formulation manufactured by Hindustan Antibiotics Ltd containing Streptomycin Sulphate (90%) and Tetracycline Hydrochloride (10%). It is specifically used in Indian agriculture to prevent and control destructive bacterial plant infections across cereals, fruits, and vegetables.

Last reviewed: 10 November 2026

Active composition and antibacterial mechanism

  • Technical content: Streptomycin Sulphate 90% + Tetracycline Hydrochloride 10% SP (soluble powder).
  • Mode of action: Inhibits bacterial protein synthesis by binding to 30S and 50S ribosomal subunits, halting bacterial multiplication.
  • Systemic absorption: Readily absorbed into plant tissues and translocated systemically through vascular bundles.
  • Synergistic action: Combining two distinct antibiotic molecules prevents rapid development of bacterial resistance in crop ecosystems.

Approved crop diseases and preventive applications

  • Rice (Paddy): Highly effective for the control of Bacterial Leaf Blight (BLB) caused by Xanthomonas oryzae.
  • Citrus: Manages Citrus Canker caused by Xanthomonas citri, reducing fruit blemishes and leaf drop.
  • Pomegranate: Controls bacterial blight (oily spot disease / Telya) caused by Xanthomonas axonopodis pv. punicae.
  • Vegetables: Controls black rot in crucifers (cabbage, cauliflower) and bacterial wilt / spot in tomato and chilli.
  • Seed and tuber treatment: Used as a pre-sowing seed soak to eradicate seed-borne bacterial pathogens in potato, ginger, and seeds.

Application guidelines, tank-mix compatibility, and safety

  • Application method: Frequently combined with copper fungicides (such as Copper Oxychloride 50% WP) for broad-spectrum bacterial and fungal control.
  • Dosage discipline: Use micro-doses strictly as prescribed on the CIB&RC approved label (typically 6 grams per 50 to 60 litres of water).
  • Water quality: Dissolve in clean, neutral-pH water; avoid mixing with highly alkaline sprays or chlorinated water.
  • Worker safety: Wear protective gloves and a dust mask when handling concentrated soluble powder.

Official source

Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.

Central Insecticides Board & Registration Committee (CIBRC) ↗

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Common questions

What is the chemical composition of Streptocycline?

It contains Streptomycin Sulphate (90%) and Tetracycline Hydrochloride (10%) in a water-soluble powder.

Is Streptocycline a fungicide or a bactericide?

Streptocycline is an agricultural bactericide specifically formulated to control bacterial plant pathogens.

Which major crop disease is managed by Streptocycline in paddy?

It is widely used to manage Bacterial Leaf Blight (BLB) in rice crops.

Why is Streptocycline often mixed with Copper Oxychloride?

Copper Oxychloride provides protective contact action on plant surfaces, while Streptocycline translocates systemically to target internal bacteria.

General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.

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