Science & Tech · Science & Environment · 7 hrs ago
Delayed paddy harvest leaves little time to clear crop residue
Farmers in northwest India, especially Punjab and Haryana, often burn leftover paddy straw after harvest from October to November.
The fires release pollutants that add to smog and can harm health, while also reducing soil moisture and nutrients.
The practice dates back to the spread of combine harvesters in Punjab in the late 1970s and early 1980s.
In 2009, Punjab restricted early paddy planting to slow the rapid depletion of groundwater.
The restrictions pushed harvests into late October and early November, leaving farmers only 10 to 15 days to prepare fields for wheat.
Long-harvesting paddy varieties and the time and cost of clearing residue by hand add to the pressure.
These factors make burning a quick way to clear fields, but it worsens pollution and can reduce soil fertility.
The Punjab Preservation of Sub-Soil Water Act delayed paddy planting, pushing harvests into late October and early November.
The later harvest leaves farmers only 10–15 days to prepare fields for the next wheat crop.
Combine harvesters leave about a foot of stubble, while manual removal is time-consuming and expensive.
The Hindu article says these pressures made stubble burning almost a necessity for farmers.
Stubble burning releases pollutants and can reduce soil fertility and moisture.
- Who
- Farmers in Punjab and Haryana, especially those growing paddy and wheat.
- What
- Delayed paddy harvests leave a short window to clear crop residue before sowing wheat.
- When
- The pressure is greatest after harvests in late October and early November.
- Where
- Punjab and Haryana, in northwest India.
- Why
- Restrictions on early paddy planting delayed harvests, while combine harvesters leave stubble and manual clearing takes time and money.
This story does not have two clearly opposing sides.
Stubble burning began to be practised in Punjab, largely after combine harvesters were introduced.
Punjab enacted the Preservation of Sub-Soil Water Act to curb groundwater depletion by restricting early paddy sowing and transplanting.
The planting restrictions push paddy harvests later, narrowing the time available to prepare fields for wheat.
- Paddy straw
- Punjab and Haryana together produce around 29 million metric tons
- Time to prepare fields
- 10–15 days between paddy harvest and wheat planting
- Stubble left by combine harvesters
- About a foot
- PUSA-44 harvest time
- 150–160 days
- Penalty under the 2009 Act
- ₹10,000 per hectare for every month of contravention
Sources
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