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Production Know How
  • RKMP serves the generic information related to rice cultivation in more than 2500 Reusable Learning Objects (RLOs).In other words this information is not context specific and may be useful to extension workers cutting across the states (For example - principles of land levelling).
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01
Jul

Seed Treatment for Dapog Nursery

Two types of seed treatments are followed in dapog nursery.Those are

1. Dry Seed Treatment

2. Wet Seed Treatment

Dry Seed Treatment for dapog nursery: Seeds are treated with fungicide like Bavistin or Thiram @ 2 g/kg of seeds, 24 hours before sowing and the seeds are treated with Azospirillum at 600g per ha of seeds.

Wet Seed Treatment for dapog nursery: Treat seeds in Carbendazim or Pyroquilon or Tricyclozole solution at 2 g/lit of water for 1 kg of seed. Soak the seeds in the solution for 2 hrs. Drain the solution, sprout the seeds and sow in the nursery bed.

It gives protection to the seedlings up to 40 days from seedling disease such as blast.

01
Jul

Dapog Nursery

1. Dapog method of raising nursery consists of growing seedlings on a concret floor or a raised soil bed covered with polyethelene sheets.

2. The method is used especially in places where supply of water in the seed-bed is dependable.

3. The normal seed rate of dapog nursery is 25-35 kg/ha seed.


01
Jul

Basal Dose of Fertilizer and Weed Management in Dry Nursery

Basal Dose of Fertilizer Management

1. Apply 1ton of fully decomposed FYM or compost to 20 cents nursery and spread the manure uniformly on dry soil.

2. Basal application of DAP is recommended when the seedlings are to be pulled out in 20-25 days after sowing in less fertile nursery soils.

3. For that situation, before the last puddling, apply 40 kg of DAP and if not readily available, apply straight fertilizers 16 kg of Urea and 120 kg of Super Phosphate.

Weed Management

1. Apply any one of the pre-emergence herbicides viz., Pretilachlor + Safener 0.3 kg/ha, on 3rd or 4th day after sowing to control weeds in the lowland nursery.

2. Keep a thin film of water and allow it to disappear. Avoid drainage of water. This will control germinating weeds.

01
Jul

Nursery Bed Preparation for Dry Nursery

 

Nursery bed preparation for dry nursery is as follows 1. Nursery area with sand and loamy soil status is more suitable for this type of nursery. 2. Plots of 1 to 1.5 m width of beds and channels may be formed. 3. Length may be according to the slope and soil. Raised beds are more ideal if the soil is clayey in nature. 4. In dry sowing, Seeds may be covered with sand and finely powdered well decomposed farm yard manure. 5. Irrigation may be given to wet the soil till it gets saturated.
01
Jul

Seed Treatment for Dry Nursery

Method of Seed Treatment for Dry Nursery

1. Treat the seeds in Carbendazim or Pyroquilon or Tricyclozole solution at 2 g/l of water for 1 kg of seeds.

2. Soak the seeds in water for 10 hrs and drain excess water.

3. This wet seed treatment gives protection to the seedlings up to 40 days from seedling disease such as blast and this method is better than dry seed treatment.

4. If the seeds are required for sowing immediately, keep the soaked seed in gunny in dark and cover with extra gunnies and leave for 24hrs for sprouting.
01
Jul

Seed Rate for Dry Nursery


Seed rate for dry nursery for different duration of varieties is as follows

1. 30 kg/ha for long duration varieties.

2. 40 kg/ha for medium duration varieties.

3. 60 kg/ha for short duration varieties.

4. 20 kg/ha for Hybrids.

01
Jul

Management of Aged Seedlings in Wet-Nursery

Management of Aged Seedlings

1. Plant one or two seedlings per hill. Follow the spacing recommended to medium and low fertility soil.

2. Avoid cluster planting of aged seedlings, which are hindering the formation of new tillers. New tillers alone are capable of producing normal harvestable panicle.

3. Weak panicle may appear in the mother culm within three weeks after transplanting and vanishes well before harvest.

4. To encourage the tiller production, enhance the basal N application by 50 % from the recommended and thereafter follow the normal schedule recommended for other stages.

01
Jul

Planting of Seedlings in the main field

 Planting of Seedlings in the main field is as follows,

1. Optimum age of the seedlings to be planted is 18-22 days for short, 25-30 days for medium and 35-40 days for long duration rice varieties.

2. Transplant 2-3 seedlings/hill for short duration and 2 seedlings/hill for medium and long duration varieties.

3. Shallow planting (3 cm) ensures quick establishment and more tillers. Deeper planting (> 5cm) leads to delayed establishment, survival and reduced tillers.

4. Line planting permits rotary weeding and its associated benefits.

5. Allow a minimum row spacing of 20 cm to use rotary weeder. Fill up the gaps between 7th and 10th DAT.

01
Jul

Root dipping of seedlings

Root dipping of seedlings can be done as: 1. Prepare the slurry with 5 packets (1000 g)/ha of Azospirillum and 5 packets (1000g/ha) of Phosphobacteria or 10 packets of (2000g/ha) of Azophos inoculants in 40 litres of water. 2. Dip the root portion of the seedlings for 15 - 30 minutes in bacterial suspension and transplant.
01
Jul

Pulling out the Seedlings in Wet-Nursery

  1. Pull out the seedlings at the appropriate time (4th leaf stage). Pulling at 3rd leaf stage is also possible.

2. These seedlings can produce more tillers, provided enough care is taken during the establishment phase through thin film of water management and perfect levelling of main field.

3. Transplanting after 5th and higher order leaf numbers will affect the performance of the crop and grain yield. Then they are called as ‘aged seedlings’.

4. Special package is needed to minimize the grain yield loss while planting those aged seedlings.

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