PKM 2
A later, higher-yielding TNAU-Periyakulam release than PKM 1, bred from a cross of two parent lines and responding strongly to closer spacing.
Quick facts
- Type
- Seed-propagated annual variety
- Season
- All seasons
- Maturity period
- First pod harvest around 6 months after planting; annual cropping
- Seed rate
- About 2–3 kg/ha for direct seeding, proportionally more for a close, high-density planting
- Expected yield
- Around 240 pods per tree per year; markedly higher-yielding than PKM 1 at the same spacing, and highest under close spacing (around 1.2 m × 1.2 m)
- Suitable soil
- Well-drained sandy loam to loam
- Release
- Released by HC&RI, Periyakulam · Tamil Nadu Agricultural University (TNAU)
About this variety
PKM 2 was released by HC&RI, Periyakulam (TNAU) as a cross of two parent lines (commonly cited as MP 31 and MP 38), bred to outyield PKM 1. It gives a noticeably higher pod count per tree than PKM 1 at the same spacing, and its yield advantage is largest under close, high-density planting — trial reports place its highest recorded yields at spacing as tight as about 1.2 m × 1.2 m, well above what PKM 1 achieves at wider spacing. It is grown as an annual, seed-raised crop, first harvested around six months after planting.
Key characteristics
Sowing & cultivation
- Sowing timeJune–July (monsoon, rainfed) or February–March (irrigated)
- Seed rateAbout 2–3 kg/ha for direct seeding, proportionally more for a close, high-density planting
- SpacingDown to about 1.2 m × 1.2 m for the high-density system this variety is best known for; wider spacing also works but gives up much of its yield advantage over PKM 1
- Sowing methodDirect seeding at the final site is preferred over transplanting
- IrrigationRegular light watering through establishment; a close-spaced, high-density block benefits from drip irrigation to manage the larger number of trees per hectare evenly
- FertilizerSimilar to PKM 1 per tree, but total per-hectare fertiliser rises with a close-spaced planting since there are more trees to feed
- HarvestingFirst harvest around 6 months after planting; a high-density PKM 2 block needs more frequent picking rounds simply because it carries more trees per hectare
Soil & climate
Soil
- Suitable soil
- Well-drained sandy loam to loam
- Irrigation
- Excellent drainage is essential, if anything more critical in a close-spaced block where one waterlogged pocket affects many trees at once
Yield & maturity
Maturity period
First pod harvest around 6 months after planting; annual cropping
Expected yield
Around 240 pods per tree per year; markedly higher-yielding than PKM 1 at the same spacing, and highest under close spacing (around 1.2 m × 1.2 m)
Actual yield depends on sowing time, soil, irrigation, weather, seed quality and crop management.
Pest & disease considerations
Major diseases
Major pests
Management notes
- Prune hard and regularly at close spacing — this variety's yield advantage depends on repeated pruning pushing out fresh branching, not on planting close and leaving it.
- Scout a dense, high-population block more often than a wide-spaced one, since pests and disease can spread faster tree-to-tree.
Suitable regions
States this variety is recommended for — check locally, since a state can have more than one recommended zone.
- Tamil Nadu
- Andhra Pradesh
- Karnataka
