questions: asking about cultivation practices of boro paddy  
 answers: recommended varieties and durations are :
nursery preparation time is nov/dec
planting time is dec /jan
varieties are: boro 1 (150 days ) yield is 3 tonne/ha
boro 2(160 days) yield is  yield is 3 tonne/ha
culture 1 (140 days) yield is 2 tronne/ha 
joymoti (175 days) yield is 5 tonne/ha
bishnu prasad (165 days) yield is 4.5 tonne /ha 
cauvery (150 days) yield is 3 tonne/ha
banglami (155 days) yield is 3.5 tonne/ha

seed bed nurssery preparation: flat seedbed is recommended. beds should be 125 cm wide and 10 m long with 30
cm gap in between two beds. six to eight such beds are required for transplanting 1 bigha.
low polytunnel (height: 75cm, width: 125cm, length: as per convenience) should be used for
raising seedlings during cold period (end of december to mid january). polytunnel is a
portable structure constructed with polythene sheet fixed on to a frame made of bamboo
sticks. the structure is placed over the seedlings on the seed bed to ensure favourable
temperature for the growing seedlings. any gap between the polytunnel and the soil should
be sealed with mud, to maintain warmth inside the tunnel during night. the structure should
be removed for 1-2 hrs daily, starting from the 7th day before uprooting in order to allow the
seedlings to acclimatize. the duration of removal should be increased gradually and the
seedlings should finally be kept completely exposed for about 2 days.
seed rate for nursery  @ 650gm to 1 kg per bed
seed treatment to be followed before nursery sowing: captan or thiram @ 3gm/kg of seed