JRO-8432 (Shakti Tossa)
A tossa jute notified in 1999 for early sowing from mid-March. It resists premature flowering, has non-shattering pods and is listed at 35 to 40 q/ha. CRIJAF suggests it for seed production in western Odisha.
Quick facts
- Crop
- Jute
- Type
- Tossa jute (Corchorus olitorius)
- Season
- Kharif
- Maturity period
- Cut at the small-pod stage, about 100 to 120 days; the full crop is 120 to 140 days (TNAU, crop-level)
- Seed rate
- Assam package for tossa: 5 to 6 kg/ha in rows or 6 to 7 kg/ha broadcast. TNAU: 5 kg/ha in rows or 7 kg/ha broadcast. No JRO 8432-only rate found.
- Expected yield
- 35 to 40 q/ha of fibre (AINP list)
- Suitable soil
- Loam or sandy loam on land that drains; tossa does not thrive in standing water (TNAU)
- Disease resistance
- Resistant to premature flowering; no disease rating found
- Release
- ICAR-CRIJAF, Barrackpore · released 1999, notified S.O. 1050(E), 26 August 1999, for West Bengal
Actual yield depends on sowing time, soil, irrigation, weather, seed quality and crop management.
About this variety
JRO-8432, named Shakti Tossa, is a tossa jute (Corchorus olitorius) variety from ICAR-CRIJAF, Barrackpore. The AINP list on jute and allied fibres dates its release to 1999 for West Bengal, with notification S.O. 1050(E) of 26 August 1999, and gives a yield of 35 to 40 q/ha. It says the variety suits early sowing in mid-March, resists premature flowering and has non-shattering pods. A book chapter on tossa breeding gives its pedigree as IC 15901 x Tanganyika 1. CRIJAF lists it first among the varieties it suggests for seed production in western Odisha, and the IARI chapter lists it for Assam, Bihar, Odisha and West Bengal.
Should you pick this variety?
Choose JRO-8432 if you sow tossa from mid-March and want a variety listed at 35 to 40 q/ha that resists premature flowering and keeps its pods. JRO 524 is the same sowing window with the longest field record, and JRO 204 is listed at 36 to 38. Choose JRO 66 if you sow from mid-April. Choose JBO 2003 H (Ira) if you want finer fibre numbers. For low land that floods, take a white jute such as JRC 321.
Sowing & cultivation
- Sowing timeMid-March sowing, with mid-March to end of April the best window (AINP list).
- Seed rateAssam package for tossa: 5 to 6 kg/ha in rows or 6 to 7 kg/ha broadcast. TNAU: 5 kg/ha in rows or 7 kg/ha broadcast. No JRO 8432-only rate found.
- SpacingAssam: rows 22 to 25 cm apart, plants 5 to 7 cm apart, thinned to 60 to 70 plants a square metre (6 to 7 lakh a hectare).
- FertilizerTossa (olitorius), Assam package: 30 kg N, 25 kg P2O5 and 25 kg K2O per hectare, with half the N and P2O5 and all the K2O at final land preparation and the rest at 4 to 6 weeks. Take off the nutrients in any cow dung or compost you add.
Advantages & considerations
Why farmers may choose it
- Meant for early sowing from mid-March, and resistant to premature flowering.
- A stated yield of 35 to 40 q/ha.
- Non-shattering pods.
Things to consider
- The 35 to 40 q/ha is a potential. The national average is about 13 q/ha, and 20 to 25 with improved practices (IARI).
- We found no disease or mite rating for JRO 8432 in the sources we could read.
- Tossa jute does not thrive in standing water. Keep it off land that holds water.
Suitable regions
States this variety is recommended for — check locally, since a state can have more than one recommended zone.
- West Bengal
- Assam
Getting the plant stand right: 6 to 7 lakh plants a hectare
An early tossa gives its yield only if the stand is right. The Assam package asks for 60 to 70 plants a square metre after thinning, which is 6 to 7 lakh plants a hectare. In rows 22 to 25 cm apart with plants 5 to 7 cm apart, that is where you land: one square metre holds about four rows, and at 6 cm spacing each row carries about 16 plants. Broadcast sowing has to be thinned to about 12 to 13 cm between plants for the same count.
Thin on time. The Assam package says to thin 3 to 4 weeks after emergence and combine it with one hand weeding. IARI says the first two weedings go with thinning at 20 and 35 days after sowing, and a third follows at 55 to 60 days, because the crop suffers from heavy weed growth in its first 6 to 8 weeks. A stand that is left thick makes thin, weak stalks that lodge and give poor fibre.
Start the stand right with the seed. For rows, tossa needs 5 to 6 kg/ha in Assam and 5 kg/ha in Tamil Nadu. Inoculate seed with Azotobacter and phosphate-solubilising bacteria at 50 g per kg, and treat it with Trichoderma at 5 g per kg against seedling blight. The crop is then ready for the one stage that matters most, the first 6 to 8 weeks.
Can you keep your own planting material?
JRO 8432 is an ordinary, non-hybrid variety, so seed from your own seed plot grows into the same type. Fibre jute is cut before the seed is ripe, so seed comes from a separate plot left to mature. CRIJAF lists JRO 8432 first among the varieties it suggests for a seed crop in western Odisha, sown between 1 and 7 July. Certified seed covers only about 35% of India's jute area, so ask a certified producer first.
How it compares with other varieties
Every Jute variety with a page on this site, side by side. The row for this page is highlighted.
| Variety | Best for | Maturity | Yield | States |
|---|---|---|---|---|
| JBO 2003 H (Ira) | Finer tossa fibre, no early flowering | Cut at the small-pod stage, about 100 to 120 days; the full crop is 120 to 140 days (TNAU, crop-level) | No labelled AINP yield found; about 38 q/ha of fibre is quoted in a technical presentation | West Bengal, Bihar, Odisha |
| JRC-212 | White jute for mid and high land | Cut at the small-pod stage, about 100 to 120 days; the full crop is 120 to 140 days (crop-level) | 25 to 28 q/ha of fibre (AINP); 22 to 26 q/ha in the Assam package | West Bengal, Bihar, Assam |
| JRC-321 | Fine white jute for low land | Cut at the small-pod stage, about 100 to 120 days; the full crop is 120 to 140 days (crop-level) | 20 to 25 q/ha of fibre (AINP list) | West Bengal, Assam, Bihar |
| JRO 204 (Suren) | Early-sown tall tossa, 36 to 38 q/ha | Cut at the small-pod stage, about 100 to 120 days; the full crop is 120 to 140 days (TNAU, crop-level) | 36 to 38 q/ha of fibre (AINP list) | West Bengal, Bihar, Assam |
| JRO-524 (Navin) | Long-record tossa, mid-March sowing | Cut at the small-pod stage, about 100 to 120 days; the full crop is 120 to 140 days (TNAU, crop-level) | 32 to 40 q/ha of fibre (AINP list); 25 to 30 q/ha in the Assam package | West Bengal, Bihar, Assam |
| JRO-66 (Golden Jubilee Tossa) | Later sowing, mid-April to early May | Cut at the small-pod stage, about 100 to 120 days; the full crop is 120 to 140 days (TNAU, crop-level) | 35 to 40 q/ha of fibre, TD-2 grade (AINP list) | West Bengal, Bihar, Odisha |
| JRO-8432 (Shakti Tossa)this page | Early-sown tossa, mid-March | Cut at the small-pod stage, about 100 to 120 days; the full crop is 120 to 140 days (TNAU, crop-level) | 35 to 40 q/ha of fibre (AINP list) | West Bengal, Assam |
Tools for this crop
The numbers you need next: how much seed to buy, whether the lot germinates, what the fertilizer bill looks like and what Jute is selling for.
- Seed Rate CalculatorHow much seed your Jute plot needs, corrected for the germination of the lot you bought.
- Germination CalculatorTest 100 seeds from the bag before sowing and see whether the lot is fit to sow.
- Seed Variety FinderFilter every Jute variety on this site by state, season, duration and soil.
- Fertilizer CalculatorTurn the NPK recommendation for Jute into bags of urea, DAP and MOP for your field size.
- Crop CalendarMonth-by-month sowing, weeding, irrigation and harvest dates for Jute in your state.
- Crop Profit CalculatorPut your seed, labour and input costs against the yield you expect from this variety.
- Mandi Price CheckerToday's Jute rate in your nearest mandi, before you fix a price with a trader.
Frequently asked questions
How early can I sow JRO-8432?
From mid-March. The AINP list says JRO 8432 suits early sowing in mid-March and resists premature flowering, with mid-March to the end of April as its window. Counting 100 to 120 days, a 15 March sowing is cut between about 23 June and 13 July. Water the crop until the monsoon starts, as IARI advises for a February-to-April sowing.
How much fibre does JRO-8432 give?
The AINP list says 35 to 40 q/ha, a potential from trials. IARI puts the national average at about 13 q/ha and says 20 to 25 q/ha is possible with improved practices. CRIJAF gives Odisha an average of 17.4 q/ha. Plan on the practice range, and weigh your own dry fibre from each field.
JRO-8432 or JRO-524 for a mid-March sowing?
Both are listed for the mid-March window and resist premature flowering. JRO 524 (1977) has the longest record and is rated resistant to root rot in heavy rain and the least susceptible to yellow mite. JRO 8432 (1999) is listed at 35 to 40 q/ha against 32 to 40 for JRO 524. Plant a strip of each in the same field and compare the weight of dry fibre.
What are the parents of JRO-8432?
A book chapter on tossa breeding gives the pedigree as IC 15901 x Tanganyika 1. We could not check it against a CRIJAF release note, so treat the cross as reported. The AINP list gives S.O. 1050(E) dated 26 August 1999.
Can I grow JRO-8432 for seed?
In western Odisha, yes. CRIJAF lists JRO 8432 (Shakti Tossa) first among the varieties for a seed crop, sown between 1 and 7 July in rows 40 to 45 cm apart with about 2.5 lakh plants a hectare, mostly rainfed. A seed crop is a separate plot left to ripen. For the fibre crop, use certified seed, since only about 35% of India's jute area gets it.
Sourced from: Details of varieties — AINP on Jute and Allied Fibres (ICAR), Tossa jute (Corchorus olitorius L.) breeding — Springer book chapter, Seed production technology of jute for western Odisha — Indian Farming 70(2), 2020 (ICAR-CRIJAF), Package of practices for kharif crops of Assam, 2021 — jute (AAU), Agronomy: kharif crops, jute — Dr B. Gangaiah, Division of Agronomy, ICAR-IARI. editorial policy.