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Growing Sweet Potato in Pune: Practical Farming Guide

A practical, step-by-step guide to establish a profitable sweet potato crop in Pune: variety selection, nursery slips, soil and water management, pest control, harvest and storage.

Ranjeet Natarajan
Ranjeet Natarajan July 28, 2026 6 min read 1,139 words
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Growing Sweet Potato in Pune: Practical Farming Guide

Overview

Sweet potato (Ipomoea batatas) is a resilient root crop well suited to Pune’s subtropical climate. It can be grown as a short-duration crop between main seasons or as a main cash crop if you manage irrigation and soils. This guide targets practical decisions for growers in Pune and similar regions of Maharashtra.

Choose the Right Variety

Selecting an adapted variety is the first practical step. In Pune conditions consider varieties that combine good yield, storage root quality and tolerance to local pests and heat:

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  • Local/indigenous types: often best for adaptive resilience and tuber quality.
  • Popular improved types: look for releases from state agricultural universities that mention Maharashtra adaptability.
  • Features to prioritise: uniform tuber shape, dry matter content suitable to market (higher dry matter for chips; moist types for fresh markets), and resistance to common viral and storage rots.

Climate and Seasonality for Pune

Pune experiences hot summers, a monsoon, and mild winters. Sweet potato grows well in warm soils and can be planted:

  • Early summer planting (March–May) with monsoon irrigation—good for crops harvested before cooler months.
  • Post-monsoon planting (September–October) for winter harvest—requires residual soil moisture or supplemental irrigation.

Avoid planting when heavy, prolonged rains are expected during vine establishment; waterlogging increases rot risks.

Soil and Land Preparation

Sweet potato prefers well-drained sandy loam to loam soils with a neutral to slightly acidic pH. Key steps:

  • Test soil pH and texture. Aim for pH 5.5–6.5.
  • Deep plough or rotavator to 20–30 cm to loosen compacted layers; tubers develop near the surface and need loose tilth.
  • Form ridges or raised beds 30–40 cm high if drainage is poor. Raised ridges also make harvesting easier.
  • Incorporate well-rotted farmyard manure (FYM) or compost at 5–10 t/ha during preparation to improve structure and microbial health.

Seed Material and Nursery Management

Sweet potato is planted using slips (vine cuttings) rather than true seed. Steps to prepare slips:

  • Source healthy, virus-free planting material from reliable suppliers or your own positive-selection plots.
  • Produce slips by placing clean storage roots in sand beds or boxes and keeping them warm and moist until vines sprout. Allow 25–40 days for slips to develop.
  • Cut slips 20–30 cm long, remove lower leaves, and root them in moist sand or soil for 7–10 days before transplanting to reduce shock.

Planting and Spacing

Planting method and spacing determine final yield and ease of management:

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  • Plant slips when they have 3–4 nodes and roots are visible. Transplant early morning or late afternoon.
  • Common spacings: 30–45 cm between plants on ridges spaced 90–120 cm apart. Closer spacing increases vine competition and can reduce tuber size.
  • Plant slips 2–3 nodes below the soil surface to encourage rooting along the stem.

Irrigation and Water Management

Sweet potato tolerates dry spells better than many crops but benefits from regular moisture during tuber initiation:

  • Maintain moderate moisture until tuber initiation; avoid waterlogging. Overwatering increases rot and reduces quality.
  • Irrigation frequency: in Pune you may need weekly irrigation during dry spells, reducing frequency after bulking starts.
  • Mulching with straw or plastic helps conserve moisture, suppress weeds and keep soil temperatures stable.

Nutrition and Fertiliser Recommendations

Balanced fertilisation improves yields. General recommendations (adjust after soil test):

  • Apply well-rotted FYM or compost during land prep (5–10 t/ha).
  • Use a basal application of nitrogen (N), phosphorus (P) and potassium (K) often leaning to higher K for root crops. For smallholders a common rate is roughly 60–80 kg N, 40–60 kg P2O5 and 80–100 kg K2O per hectare—adjust to soil tests and variety needs.
  • Split N applications if needed: some at planting and a top-dress 4–6 weeks later.
  • Micronutrients: watch for boron and zinc deficiency signs; apply as foliar sprays if deficiencies are diagnosed.

Weed, Pest and Disease Management

Practical IPM reduces losses without excess chemicals.

  • Weed control: shallow hoeing and hand-weeding early before vines spread. Mulch reduces labour.
  • Insect pests: sweet potato weevil is the main pest where present—avoid planting near infested fields, destroy volunteer roots, and use clean seed. Monitor for caterpillars and aphids; favour biological controls and spot-treat if necessary.
  • Diseases: soil-borne rots and fungal leaf spots increase with poor drainage and high humidity. Use disease-free planting material, rotate crops (avoid successive sweet potato on same land), and maintain drainage.
  • Viruses: aphid-transmitted viruses stunt yield. Use virus-free slips and control aphids to reduce spread.

Vine Management and Intercultural Operations

Vines can be left to spread or trained depending on system:

  • For high-density systems leave vines on ridges to cover soil and suppress weeds.
  • Other systems may prune vines to reduce vine reproduction and encourage root bulking; prune carefully—excessive pruning reduces photosynthesis and yield.
  • Keep records of operations and fertiliser inputs to replicate success or correct failures.

Harvesting and Yield

Harvest timing depends on variety and purpose. General guidance:

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  • Maturity: typically 90–150 days after planting depending on variety and planting season. Early varieties mature sooner.
  • Harvest when vine yellowing begins and tops dry down for fresh-market quality. For seed roots or storage, delay until full bulking occurs but avoid frost or heavy rains that can cause rot.
  • Handle roots gently to avoid skin damage—damaged roots store poorly and fetch lower prices.
  • Yields vary with inputs, variety and management. Keep realistic expectations based on similar local farms and your prior results.

Post-harvest Handling and Storage

Proper curing and storage maintain quality and market value:

  • Curing: keep roots at 25–30°C with high humidity for 4–7 days to heal skins and reduce storage rots.
  • Storage: store in ventilated, cool (but not cold) conditions. Avoid temperatures below 10°C which cause chilling injury, and avoid high humidity that encourages rot.
  • Sort and grade for size and skin damage; damaged roots should be sold early or processed.

Marketing and Value Addition

Know your market beforehand. Options include fresh market sales, supplying hotels and eateries, and value addition:

  • Fresh roots: sort by size and cleanliness; buyers prefer uniform and clean roots.
  • Processing: chips, flour and ready-to-eat products can add value—investigate local processors or collective processing among growers.
  • Plan harvest timing to avoid market gluts; stagger planting if storage facilities are limited.

Common Problems and Practical Tips

  • Problem: small or misshapen roots. Causes: compacted soil, poor nutrition or excess nitrogen late in the season. Remedy: improve soil tilth and balance fertiliser timing.
  • Problem: rot in stored roots. Causes: skin damage at harvest, incomplete curing, or high humidity in storage. Remedy: gentle handling, proper curing and ventilated storage.
  • Problem: low establishment of slips. Causes: poor-quality slips or transplant shock. Remedy: root slips before transplanting and plant in cooler times of day.
  • Tip: maintain a small seed plot under protected conditions to always have clean planting material available.

Final Notes

Sweet potato fits well into diversified farms around Pune when you select adapted varieties, focus on soil health, control pests with integrated measures and handle roots carefully at harvest. Start with a pilot plot to refine variety choice, spacing and post-harvest handling before scaling up.

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Ranjeet Natarajan
Ranjeet Natarajan

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

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