Roana LP-15: Variety of Cuban rice, excellent grain and medium cycle. It was obtained at the Experimental Rice Station located in Los Palacios , belonging to the National Institute of Agricultural Sciences , from the selection in F6 generation from a double crossing. Among its characteristics, excellent agricultural and industrial yields and tolerance to the main pests stand out.
Summary
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- 1 General characters
- 2 Descriptive Characters of the Variety
- 3 Agronomic and resistance characteristics
- 4 Recommendations for its use
- 5 Internal links
- 6 Source:
General characters
Variety of medium cycle (130-150 days), is characterized by the size and weight of its grain has shown excellent results in terms of agricultural and industrial performance and better tolerance in the field against pests. The optimal planting season is from December 15 to February 28 and from June 15 to July 31. The nitrogen levels to be used are 175 kg of N.ha-1 in the two seasons and the appropriate planting density is 120 kg of seed per hectare.
Descriptive Characters of the Variety
- Parents: 8073 // IR 759-54-2-2 / J-104
- Crop cycle: medium
- Vigor: Vigorous
- Plant size: Erect
- Tillering capacity: Medium (10 children per plant)
- Foliage Color: Dark Green
- Aging of the leaves: They do not age
- Plant height: 71 cm
- Edges: Short, present in some grains
Seeds of the variety Roana LP-15
- Panicle Density: Intermediate
- Panicle length: 24cm
- Panicle Excision: Emerged
- Shell grain length: 10.3mm Very long
- Shell grain width: 2.5mm Semi-spherical
- Weight 1000 grains in shell: 33 g Very high
- Grains filled per panicle: 130
INCA LP-4 variety grains in shell and polished
Agronomic and resistance characteristics
- Acame Resistance: Resistant
- Shear Strength: Intermediate
- Fertile children per m2: 400
- Whole grain industrial yield: 58%
- Suitable for direct seeding and mechanized harvesting
- Resistance to Pyricularia grisea: Intermediate
- Resistance to Helminthosporium oryzae: Resistant
- Resistance to Cercospora oryzae: Resistant
- Resistance to Tagosodes orizicolus: Intermediate
Recommendations for use
- Variety suitable for direct sowing and mechanized harvesting
- Optimum planting time: from December 15 to February 28, where yields of 6.9 Kg / ha have been obtained and from June 15 to July 31, with yields of 5.7 t / ha.
- The nitrogen levels to be used are 175 Kg. Of N / ha in both seasons and the appropriate planting density is 120 Kg. Of seed per hectare.
- The optimum harvest humidity is obtained between 20 and 24%, which occurs around 35 days after 50% panniculation.
