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AEROBIC RICE VARIETY, MAS 946-1

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IMPORTANT CHARACTERS AND FEATURES OF NEW AEROBIC RICE VARIETY, MAS 946-1

•    Puddling, transplanting and Submerged irrigation not required
•    Direct sowing of as in case of Ragi or Maize or Sorghum
•    Seed rate of 7 kg/ha and Saving of seed rate upto 80% and labour 30%
•    Medium duration of 120 days with erect plant type
•    Irrigation once in 3-5days and Saving of water upto 40-45 per cent
•    Drought and Blast disease tolerance
•    Profuse rooting, High tillering(60 nos.) and medium slender grain type
•    Reduced methane emission (upto 70%)

LAND PREPARATION, SOWING SEASON & TIME

The land is ploughed, leveled and the seeds are directly sown during Kharif (June- July) and Summer (2nd week of February).

SEEDS AND FERTILIZERS (ha)
Seeds    -   7 kg
FYM    -   10 ton

•    Chemical Fertilizers
Nitrogen    -   100 kg
Phosphorus    -   50 kg
Potash         -   50 kg

•    Micronutrients
Zinc Sulphate    -  20 kg
Iron Sulphate    -  12 kg

SOIL TYPE
Aerobic rice can be successfully raised in all type of soils and with good water management practices.

METHOD OF CULTIVATION
Land is ploughed after the harvest of the previous crop preferably ensuring deep tillage and fine tilth to enable enhanced root growth and higher moisture in soil. interculture and weeding in the first six weeks is important for good crop growth stand. Top-dressing with nitrogen and micronutrients is necessary if deficiency symptoms appear at vegetative stage.

FERTILIZER MANAGEMENT

Farm Yard Manure (FYM): Incorporate recommended dose of FYM three weeks before sowing.
Chemical Fertilizers : 100:50:50: N : P205: Kp kg/ha; 100% Phosphorus to be given at sowing; Nitrogen in three splits; 50% at sowing; 25% at 30 days after sowing and remaining 25% at 45 days after sowing ;Potassium in two splits;50% at sowing;50% at 50 days after sowing. Incorporate micronutrients with Zinc Sulphate at 20 kg / ha and Iron Sulphate at 12 kg/ha in furrows at sowing along with chemical fertilizers.
Spacing : 30x20 cm: The seeds are sown 30 cm between rows and 20 cm within rows with 5 cm depth. Seeds are covered with soil and light irrigation should be given immediately after sowing.

WEED MANAGEMENT
Application of chemical weedicides and one hand weeding at 20 days after sowing provides optimum weed control.The intercultivation with hoe is useful (2-3 times at an interval of 10 days).This will not only control 80 to 90% weeds but also increases aeration for better root growth that facilitates enhanced tillering.

WEEDICIDES

a.    Pre-emergence herbicides, should be sprayed within 48 hours of sowing
•    Butachlor 50 EC, 2.5 Itr.s / hec. (750 Itrs of water)
•    Phyrazosulphuran ethyl 250g/hec. (750 Itrs. of water)
b.   Post-emergence herbicides, should be sprayed within 15 to 25 days of sowing (emergence of 2 to 4 leaves)

WATER MANAGEMENT
Dry sowing is carried out and a surface irrigation of about 40mm of water is given before sowing. One light surface irrigation is given at an interval of 5 days upto 25 DAS; irrigation should be continued once in 5-7 days upto 50 DAS; During grain filling stage irrigation is provided once in 3 days. Field should be irrigated to a depth of 5 cm. Water must be withheld 8 days before harvest of crop to facilitate uniform ripening of grains. Irrigation must be given at the critical stages of tillering, panicle initiation, flowering and grain filling. Aerobic rice could be successfully raised with 700 to 900 mm of total water in summer and entirely on rainfall in wet season. With the above irrigation schedules, 1 kg of rice is produced with 2000 to 2500 liter of water in aerobic rice contrary to 4500 to 5000 liter in transplanted submerged rice. By adopting this method, there is water saving to the tune of 40 to 50% in summer season still higher in kharif season as compared to continuous submergence.

DISEASE AND PEST MANAGEMENT
•    Need based application as in case of regular irrigated rice.
•    Need based application of 2 ml of ehloropheriphos/ liter of water for controlling 
      stem borer.

YIELD
By following recommended methods, it is possible to achieve 50-55 quintals of grain and 55-60 quintals of straw per hectare, using this variety.

POINTS TO BE NOTED
•    Right time of sowing and Interculture
•    Water Management
•    Weed Management
•    Maintenance of plant population
•    Use of FYM and micronutrients.

IMMEDIATE TARGETED AREA FOR AEROBIC RICE CULTIVATION OF MAS 946-1 VARIETY
•    Tank irrigated area
•    Well / tube well irrigated areas
•    Malnad / Semi-Malnad coastal areas
•    Tail end region of command area

Read about MAS 946-1 variety in Kannada - Click Here


For more detailed information on MAS 946-1 Variety contact

Dr. Shailaja Hittalmani
Professor and Head, Marker Assisted selection Laboratory
Department of Genetics and Plant Breeding
UNIVERSITY OF AGRICULTURAL SCIENCES
G.K.V.K., Bangalore - 560 065
Tel: 080-23624967
Email : shailajah_maslab@rediffmail.com

File Courtesy: 
Department of Genetics and Plant Breeding, UNIVERSITY OF AGRICULTURAL SCIENCES
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