1)Japanese mint
Kalka, Gomti, Himalaya, Sambhav, Saksham, MAS-1, MA-2, Hybrid-77, Shivalik and EC-41911
2)Spear mint
Arka Neera, Ganga, Neerkalka, MSS-1, MSS-5 and Punjab Spearmint-1.
3)Bergamot mint
Kiran
4)Pepper mint
Kukrail, Pramjal and Tushar, CIM Indus, CIM Maduras
Soil –
Well drained loam or sandy loam soils rich in organic matter having pH between 6 and 8.2 are ideally suited for its cultivation .
Climate-
Sub-tropical areas receiving an annual rainfall of 100 – 150 cm are good. Japanese mint can be cultivated both in tropical and sub-tropical
areas. The mean temperature of 20-400 C during major part of the growing period and annual rainfall of 100-110 cm, (light showers at planting stage and ample sunshine at thetime of harvesting) are ideal.
Mint can be propagated vegetatively through root suckers and terminal cutting.
On an average, 4 quintals of stolons are required for planting in one hectare of land.
June – July.
Basal
Apply NPK at 50:75:50 kg/ha.
Top dressing
Apply 30 kg N in 2 splits at 60th and 120th day after planting.
1)Pests
Red pumpkin beetle
Spraying malathion @1ml/litre of water.
1)Stolon rot
Treatment of the stolons with 0.25% captan or 0.1% benlate or 0.3 %. agallol solution for 2 to 3 minutes before planting is a preventive measure.
2)Fusarium wilt
Application of 0.1% benlate or bavistin carbendazim
3)Leaf blight
Application of 0.25% copper oxy chloride (2.5g/l)
1)Herbage- 24 – 30 t/ha/year.
2)Oil- 100-150kg/ha/year
Storage of herbage
Mint herbage should be shade dried for about a day before it is distilled. Care should be taken that decomposition of the herbage does not initiate during the drying process. There would be some reduction in oil yield if wilted herbage crop is stored for a
longer period of 2-3 days. As such, storage of herbage for a longer period is not recommended.
Distillation
The recovery of oil from the herbage is 0.5-0.8%. Oil is obtained through steam distillation. The oil is of golden yellow colour, containing not less than 75% menthol. The duration of steam distillation is 2-2.5 hours for complete recovery of the oil. About 80% of the oil is received in the receiver in about one hour. The oil that is received later is richer in menthol