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Mulberry Silkworm on the Deccan Plateau: Practical Cultivation Guide

A hands-on guide for growing mulberry and rearing Bombyx mori on the Deccan Plateau. Covers site selection, planting, irrigation, silkworm management, pest control, and selling cocoons.

Ranjeet Natarajan
Ranjeet Natarajan August 9, 2026 6 min read 1,145 words
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Mulberry Silkworm on the Deccan Plateau: Practical Cultivation Guide

Introduction

Sericulture on the Deccan Plateau can be a profitable smallholder enterprise when managed to local conditions—hot summers, distinct monsoon, and variable soils. This guide focuses on practical steps for mulberry cultivation and Bombyx mori rearing, with emphasis on what works in the plateau’s climate and water realities.

Overview of the System

Sericulture here has two linked components: producing quality mulberry leaves and rearing healthy silkworms. Your returns depend on leaf quality, sanitation in the rearing house, and timing—especially aligning peak leaf availability with the silkworm feeding cycle.

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Site and Soil for Mulberry

Choose a site with:

  • Good drainage—mulberry tolerates many soils but waterlogging reduces root health.
  • Access to irrigation—monsoon provides growth, but dry season water is crucial.
  • Sunlight—mulberry does best in full sun; partial shade reduces leaf quality.

Soil test and amend where needed: mulberry prefers neutral to slightly alkaline soils. On the Deccan Plateau, add organic matter (farmyard manure or compost) to sandy or degraded soils to improve moisture retention.

Varieties and Planting Material

Select varieties adapted to your region—consult local sericulture extension for recommended clones. Use disease-free saplings from certified nurseries or healthy cuttings. Common propagation methods are stem cuttings and root suckers; cuttings should be taken from mature, pest-free plants.

Planting Layout and Density

Planting layout depends on whether you will harvest leaves mechanically or by hand. For hand-harvest and high-quality feed, use higher densities with regular pruning cycles. Typical practices on the plateau include row planting with space to allow irrigation and pruning access. Ensure alleyways for movement and leaf transport.

Crop Management: Pruning and Harvesting

Pruning establishes manageable tree height and encourages leafiness. Two systems commonly used are:

  • Pollarding/hedge systems for frequent leaf harvest and easy access for silkworm feeding.
  • Bush system for less intensive management but lower leaf turnover.

Prune to maintain new tender shoots—these are preferred by silkworms. Time pruning to allow new flush before planned silkworm rearing cycles. Harvest leaves in the morning when they are turgid and avoid mixing dusty or damaged material into feeds.

Irrigation and Fertility Management

The plateau’s dry periods require planned irrigation. Drip or micro-sprinkler systems make water use efficient and maintain consistent leaf quality. Apply organic manure during land preparation and supplement with balanced N-P-K based on soil tests. Split nitrogen applications to support regrowth after pruning.

Pest and Disease Management in Mulberry

Common problems include leaf-eating insects, powdery mildew, and root rot in poorly drained soils. Manage with:

  • Field sanitation—remove infected plant parts early.
  • Biological controls and selective pesticides only when necessary, ideally timed to avoid residues on leaves used for feeding silkworms.
  • Fungal control through improved airflow (pruning) and avoiding overhead irrigation late in the day.

Preparing for Silkworm Rearing

Raising Bombyx mori requires a clean rearing house, dependable leaf supply, and a schedule synchronized to silkworm age. Key preparations:

  • Disinfect the rearing room, trays, and tools before each batch.
  • Ensure a continuous supply of tender, disease-free leaves timed for the 4th and 5th instars when consumption is highest.
  • Arrange for brood (eggs) from a reliable grainage or government sericulture unit to match local strains.

Hygiene and Rearing Environment

Maintain strict hygiene—Bombyx mori is sensitive to bacterial and viral infections. Recommended environmental ranges vary with instar and strain, but the general approach on the Deccan Plateau is:

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  • Keep the rearing room clean, rodent-proof and with smooth, washable surfaces.
  • Avoid direct sun and strong temperature swings—shade and thermal mass can moderate daytime heat.
  • Ventilate to manage humidity: too low causes desiccation, too high promotes disease. Adjust ventilation and wetting floors as needed to stabilize humidity.

Silkworm Rearing Steps

1. Incubation of Eggs

Follow supplier instructions for incubation temperature and humidity. Incubation period depends on strain and temperature—avoid stressing eggs with temperature extremes.

2. Mounting and Chawki Rearing (1st–2nd Instar)

When hatched, provide tender mulberry shoots or specially prepared chopped leaves. Feed small quantities frequently to maintain cleanliness—remove uneaten leaves quickly to prevent mould. Chawki larvae are fragile; low stocking densities help reduce stress.

3. Middle and Late Instars (3rd–5th)

Increase feeding volumes as worms grow. Shift to larger trays and provide whole leaves layered to minimize mechanical damage. Keep trays free from droppings; regular cleaning reduces disease pressure. During the 4th and 5th instars, silkworms eat the most—ensure uninterrupted supply of the best shoots.

4. Mounting for Cocooning

Provide dry, clean mounting frames or grasses. Avoid placing mountages near draughts. Reduce disturbance; silkworms will stop feeding and start wandering to find a place to mount.

Common Silkworm Problems and Management

  • Flacherie (bacterial disease): Keep excellent hygiene, avoid high temperatures and contaminated leaves.
  • Nuclear Polyhedrosis Virus (NPV): Extremely damaging—prevent by sourcing healthy eggs and strict hygiene; there is no effective on-farm cure.
  • Gaps in leaf supply: Plan leaf harvests and consider small-scale conservation of cut leaves under cool, shaded conditions for short periods.

Harvesting and Handling Cocoons

Harvest cocoons promptly once spun and dried to avoid moth emergence. For commercial silk, most producers opt for stifling cocoons (heat treatment) to kill pupae before moths emerge. Methods vary—steam or hot air stifling is common at scale. Follow local regulations and practice humane, safe methods.

Grade cocoons by size, cleanliness and colour before selling. Store in dry, ventilated conditions until sale or processing.

Record-Keeping and Batch Management

Keep simple records by batch: egg lot, start date, leaf source and variety, mortality, and cocoon counts and quality. Tracking allows you to identify recurring issues and improve over time.

Marketing and Selling Cocoons on the Deccan Plateau

Find buyers through local silk cooperatives, primary markets, or government extension networks. Key tips:

  • Grade and clean cocoons; buyers pay premiums for uniform, clean lots.
  • Time sales to market demand—bulk sales during harvest peaks may fetch lower prices; storage risks pest damage, so balance timing carefully.
  • Forming or joining grower groups helps negotiate better prices and share processing facilities like reeling or stifling units.

Practical Tips for Success on the Plateau

  • Schedule rearing to avoid the hottest months or ensure cooling/ventilation during peak summer.
  • Use drip irrigation and mulches to conserve water and maintain leaf quality between monsoons.
  • Invest time in seed/egg source verification—disease-free starting material is the single most important factor for success.
  • Start small, master one or two batches, then scale—this reduces risk and builds skill.

Where to Get Local Support

Contact district sericulture extension, agricultural universities, or local cooperative societies for recommended mulberry varieties, egg suppliers, and training courses. These institutions can also advise on subsidised inputs or equipment programs in your area.

Conclusion

Successful mulberry-silkworm production on the Deccan Plateau depends on aligning mulberry management with the region’s water and temperature cycles, maintaining strict hygiene in silkworm rearing, and securing reliable inputs and markets. Practical record-keeping, staged scaling, and cooperation with local sericulture services will improve outcomes and reduce production risk.

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Ranjeet Natarajan
Ranjeet Natarajan

Contributing writer at Agriculture Novel — telling the stories that sustain us.

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