4. Boro rice cultivation Thematic area : Cultivation of boro rice
Year of release : 2005
Details of the technology
Variety : Bishnuprasad, Joymati, Jyotiprasad,
Kanaklata, Chandrama, NBR2, NBR3
Characteristics Bishnuprasad : Semi dwarf
Joymati : Semi dwarf/ Medium tall
Jyotiprasad : Semi dwarf
Kanaklata : Semi dwarf/ Medium tall
Chandrama : Semi dwarf
NBR2 : Semi dwarf
NBR3 : Semi dwarf
Duration : Bishnuprasad : 165-175 days
Joymati : 165-175 days
Jyotiprasad : 165-175 days
Kanaklata : 165-175 days
Chandrama : 165-175 days
NBR2 : 165-175 days
NBR3 : 165-175 days
Grain character : Bishnuprasad : Bold
Joymati : Medium slender
Jyotiprasad : Bold
Kanaklata : Medium slender
Chandrama : Bold
NBR2 : Bold
NBR3 : Medium slender
Sowing time : Mid November
Seed rate : 40 kg per ha.
Space between lines : 20 cm
Space between plants : 15 cm
Seed treatment : Mancozeb @ 2.5 g/kg or Captan @ 2.5 g/kg
Land preparation : Thoroughly puddled
Manuring : 10 tons per ha
Fertilization : 60 : 30 : 30 kg (N : P₂O₅ : K₂O) per ha
Harvesting time : May-June
Pest management : Annexure - II
Disease management : Annexure - III
Farming situations : Irrigated medium and lowland
Agro-climatic zones : All zones
Source of technology : Regional Agricultural Research Station
Assam Agricultural University
Titabar _ 781 360, Assam
Source of critical inputs : Annexure _ I
Benefit Cost Ratio : 1.58:1
Observations to be recorded :
i. Temperature
ii. Rainfall
iii. Date of sowing
iv. Date of germination
v. Date of transplanting
vi. Date of top dressing
vii. Date of weeding
viii. Days to 50% flowering
ix. Plant height
x. Number of Ear bearing tillers/m²
xi. Grain per panicles
xii. Pest infestation
xiii. Disease infection
xiv. Grain yield
xv. Farmers' reaction
Technology assessments (Matrices) : Annexure _ IV