Sowing: 35-45 days seedlings may be transplanted. During transplanting 1-2 cm water is required. 2-3 seedlings may be sown together and also at 2-3 co depth. Transplanting should be done in row. Row to row distance should be 20-25 cm and plant to plant distance along the row is 15-20 cm.

Severe Cold and Seedbed:

Cold weather hinders crop growth. In order to maintain the seedbed nicely, the seedbed should be covered with polythene from morning 10 o’ clock to  evening. Release the water from  the seedbed in the morning hours and also remove the dews. This will help to grow the crop smoothly. ( more is given later)

Maintenance of Seedbed:

Maintain 2-3 cm water in seedbed after 4-5 days after germination. This will also help to save the seedbed from birds. Apply 7 gram  urea per sqare  meters if the seedbed becomes yellowish. If still the seedbed is yellowish after the urea application as mentioned, apply 10 gm gypsum per sq meters. Maintain the water level in the seedbed after application of urea.

Fertiliser Applications:

Low land Boro Paddy: ( More than 150 days and long duration)

TSP, MP, Gypsum, Zinc Sulphate all the fertilisers should be applied at the end of land preparation. Urea should be applied as follows:

1.       1^st Dose: 1/3^rd  urea the end of land preparation

2.      2^nd dose ( 1^st top dressing): 1/3^rd  urea during appearance of tillers(   Usually 20-25 days after the 1^st dose)

3.      3^rd dose:1/3 urea 5-7 days before panicle initiation

Medium land Boro Paddy: ( less than 150 days and short duration)

1.      1^st Dose: 1/3^rd  urea 15-20 days after transplantation

2.      2^nd dose ( 1^st top dressing): 1/3^rd  urea 30-35 days after transplantation

3.      transplantation 3^rd dose:1/3 urea 5-7 days before panicle initiation

Haor Region

If nitrogen deficiency is noticed after Kaichthor, apply 4-5 kg urea  per bigha as additional dose

Application of Sulphur and Zinc:

After application of urea if the plants become yellowish, then there is a chance of deficiency of Sulphur in the plants. In that case immediately remove water from the field and apply gypsum at the rate of 8kg/bigha. Add gypsum with either soil, ash or urea dose  In  addition to that, if the growth of the plants are shunted and the colour of the old leaves change from brown to orange, then there may be deficiency of zinc. After removing water from the field add 1.5 kg zinc sulphate per bigha.

Irrigation Scheduling:

1.      There may not be any need to maintain standing water in the rice field.

2.      Maintain 2-3 cm level of water upto 12-15 days after transplanting.

3.       After that using alternate  wetting and drying maintain water level 5-7 cm upto appearednce of Thor.

4.      From thor formation to hardening of grain, maintain 2-5 cm water.

Intercultural operations:

Everytime weeding should be done before application of fertilizer and mixed the same with soil. Hand weeding or weedicies may be used for weeding.

Severe cold wave and management of Boro Paddy.

Following precautions are taken to save the crop from cold.

1.      Maintain 3-5 cm water in the seedbed.

2.       Cover the seedbed with transparent polythene from 10 am in the morning to evening.

3.      Remove the existing water from seedbed  and put fresh water in the morning.

4.      Remove the dew deposited on the plant.

5.      Withheld transplanting during severe cold condition.

6.       Maintain 5-7 cm water level  after transplanting under cold wave condition.

7.      Maintain 5-7 cm water level   in Kushi stage under cold wave condition.

8.      Use 35-45 days old seedling for transplanting.

9.      Maintain 15-20 cm standing water during thor and flowering stages under cold wave condition.

Damages of Boro Paddy due to weather condition and their remedies

Cold:  12-13 degree centigrade in the morning and  28-29 degree centigrade  are the critical temperature during  Kaichthor to Thor)  and  cause damage to paddy grain. If such conditions prevail for 5-6 days, then there may be considerable damage to crop. Even if the night temperature goes below critical tempereature, day temperature more than 29 degree centigrade  save the crop from damage.

Warm Condition:

35 degree centigrade and above is harmful for the crop. If such temperature prevails 1-2 hour during flowering stage that will affect grain. Usually such high temperature in the month of May coincides with flowering stage affect grain production.

Stormy Wind:

Stormy wind along with high temperature cause lot of evaporation from the rice field and that ultimately dry up the field and also affect plant growth. Stormy wind also affect pollination and fertilisation

Drought: This affect the growth of panicle and ultimately produce deformated and unproductive plant.

General Remedies:

If the seedbed is prepared by middle of November, then there may be chance that the thor and flowering may skip low and high temperature and also stormy wind.