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Bihar

1
नवेंबर

Time of Harvesting

Time of Harvesting:

Harvesting is done in three seasons:

  • In kharif season the crop is harvested during October-November.
  • In Rabi/Winter season the crop is harvested during April-May.
  • In Summer season the crop is harvested during June-July.
File Courtesy: 
DRD, Patna
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नवेंबर

Grain Discolouration

Grain Discolouration:

Symptoms:  

File Courtesy: 
DRD, Patna
Photo Courtesy: 
Mr.Chaitanya (DRR)
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नवेंबर

Rice Tungro Virus: RTV

Rice Tungro Virus: RTV

Causal Organism: The virus is transmitted by the Green leaf hopper N. virescens and N. niggropictus.

Symptoms:

  • The diseased plants exibit orange yellow discolouration of leaves from the tip downwards.  
  • The young leaves show mosaic mottling. The plants are dwarfed with poor tillering and become sterile.

Control:

File Courtesy: 
DRD, Patna
Photo Courtesy: 
Dr.Krishnaveni DRR
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नवेंबर

Sheath Rot

Sheath Rot

Casual Organism: Saracladium Oryzae

Symptoms:

File Courtesy: 
DRD, Patna
Photo Courtesy: 
Dr.Krishnaveni DRR
1
नवेंबर

Sheath Blight

Sheath Blight

Casual Organism: Rhizoctonia Solani

Symptoms:  

File Courtesy: 
DRD, Patna
Photo Courtesy: 
Dr.Krishnaveni DRR
1
नवेंबर

Brown Spot

Brown Spot

Casual Organism: Helminthosporium Oryzae

Symptoms:  

  • The leaves show oval shaped foliar spots with yellow halo.Severely affected field presents a reddish appearance.
  • Grain become discoloured.

Control:

File Courtesy: 
DRD, Patna
Photo Courtesy: 
Dr.Krishnaveni DRR
1
नवेंबर

Blast

Blast

Casual Organism : Pyricularia Grisera

Symptoms:

The leaves show spindle shaped spots with grey centre and dark brown margin.  

The lesions enlarge and cause drying of leaves. The nodes and neck regions turn black and cause rotting and breaking with complete/partial chaffiness of earhead.

File Courtesy: 
DRD, Patna
Photo Courtesy: 
Dr.Krishnaveni DRR
1
नवेंबर

Management of Snails and Rats

Management of Snails and Rats

(a) Snails:

(1) Effective control of snails to collect their eggs and dip in 10% salt solution.

(2) To kill the snails apply Carbofuron 3G @ 25 Kg/ha.

(b) Rats:

(1) Aluminium Phosphoric – keep 3 gm pillets in each live burrow and close the hole with mud.

(2) Zinc Phosphoid – Mix 1 gm Zinc Phosphoid with 40 parts edible flour + linseed oil and make 5 gm pillets as bait.

(3) Bromodiolon : Keep 15-20 gm poisonous bait in each burrow.

File Courtesy: 
DRD, Patna
1
नवेंबर

Rice Hispa

Rice Hispa

Symptoms of damage:

1. The adult beetles feed on the epidermal tissue of the leaves and the grubs mine the leaf tissue and pupate there.

2. The beetles scrape the chlorophyll between the veins of the lamina resulting in whitish parallel streaks. Later, owing to indiscriminate feeding even on leaf veins, white blotches appear on leaves.

3. In severe epidemics leaves dry up and the crop presents a scorched appearance.

File Courtesy: 
DRD, Patna
Photo Courtesy: 
CRRI
1
नवेंबर

Brown & Green Hopper

Brown & Green Hopper

Symptoms of damage:

1. The leafhoppers attack all the stages of the plant. Both adults and nymphs cause direct damage by sucking plant sap leading to stunted growth and reduced tillering.

2. At high population levels their feeding results in the drying of the plants and the infested paddy fields appear blighted. Infestation at the time of panicle emergence affects grain formation.

File Courtesy: 
DRD, Patna
Photo Courtesy: 
Dr. Chitra Shanker(DRR)
1
नवेंबर

Gallmidge Fly (Sarha insects)

Gallmidge Fly (Sarha insects)

Symptoms of Damage:

1. The chief stage of Gall midge which causes damage is the maggot. The maggot feeds on the growing tip and suppresses the leaf primordial differentiation.

2. This in turn induces the development of radial ridges from the innermost leaf primordium followed by an elongation of the leaf sheath.

File Courtesy: 
DRD, Patna
Photo Courtesy: 
Mr. Y. Kondal Rao (DRR)
1
नवेंबर

Rice Gundhi Bug

Rice Gundhi Bug

Symptoms of damage:

1. The adults and nymphs suck the juice from the developing grains in the early stage of grain formation.

2. Young succulent leaves and shoots are also attacked before the grain formation stage. Infestation is characterised by the presence of some empty or ill-formed grains in the panicles.

File Courtesy: 
DRD, Patna
Photo Courtesy: 
CRRI
1
नवेंबर

Juice sucking insects

Juice sucking insects

Symptoms of damage:

1. Both the nymphs and adults suck the sap from leaves. As a result of pest attack, initially yellowish streaks appear on the leaves.

2. Later, the leaves curl longitudinally from the margins inwards leading to sharply pointed leaf tips resembling that of needles, which finally wither.

File Courtesy: 
DRD, Patna
Photo Courtesy: 
CRRI
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नवेंबर

Stem borer

Stem borer 

Symptoms of damage:

1. The larvae of the borers enter the tiller, feed, grow and cause the characteristic symptoms of ‘dead hearts’ or ‘white ears’ depending on the crop stage.

2. At tillering stage, the feeding frequently results in severing the apical parts of the plant from the base.

File Courtesy: 
BAU, Ranchi
Photo Courtesy: 
Mr. Y. Kondal Rao (DRR)
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नवेंबर

Weed Management

Weed Management

(A) Hand Weeding is advised for 2 times.

(B) Chemical Weeding

(i) Direct Sowing:

        (a) As Post-Emergence: Spray Butachlor 50 E.C. or Thiobencarb 50 E.C. @ 2-3 litre/ha in 700-800 litre of water after 2-3 days of sowing to control all types of weeds.

File Courtesy: 
DRD, Patna
1
नवेंबर

Manures and Fertilizers

Manures and Fertilizers

The manures and fertilizers required for paddy cultivation are as follows:

  • FYM/Compost: 10~15 Cartload (Compost: N=0.5~0.5%; P=1.5%; K=2.3%)
  • Nitrogen: 100~150 Kg/Ha.
  • Phosphorous: 50~60 Kg P2O5/Ha. (P = P2O5 x 0.44 & P2O5 = P x 2.29)  
  • Potash: 40~50 Kg KO/Ha. (K = K2O x 0.83 & KO = K x 1.20)
  • Zinc Sulphate: 25 Kg/Ha. (22~35% Zn)
  • Green Manuring Crops: Sanai; Dhaincha; Moong/Urd, etc.
File Courtesy: 
DRD, Patna
1
नवेंबर

Seed rate, treatment and spacing

Seed rate, treatment and spacing

A) Seed rate: There are two methods of sowing rice in Bihar. They are

i) Direct Sowing

ii) Transplanting.

The seed rate for direct sowing is 90-100kg/ha and for transplanting is 30-50kg/ha.

B) Seed Treatment: Prior to sowing the seed should be treated with 60gm Seresan 2.5% WP or other Organo Mercurial fungicides by dipping the seed in water.

File Courtesy: 
DRD, Patna
1
नवेंबर

Sowing and Transplanting:

Sowing and Transplanting:

A) Sowing

  • Rice is grown in three seasons. They are Kharif, Rabi/Winter and Summer seasons.
  • In kharif season the crop is sown during June.
  • In Rabi/Winter season the crop is sown during October – November.
  • In summer season the crop is sown during first fortnight of March.

B) Transplanting: The crop is transplanted in the main field at 25-30 days after sowing.

File Courtesy: 
DRD, Patna
1
नवेंबर

Climatic and Soil requirements

Climatic and Soil requirements

  • Climate: The suitable climate for Rice cultivation in Bihar is Temperate climate.
  • Rainfall: An average of 120-140cm of rainfall is required for paddy cultivation.
  • Temperature: The temperature requirement for paddy in Bihar is 21-37 degree Celsius.
  • Soil: The soil suitable for cultivation is heavy to sandy loam.
File Courtesy: 
DRD, Patna
1
नवेंबर

Suitable varieties recommended for cultivation in Bihar

Suitable varieties recommended for cultivation in Bihar

(A) For Kharif Season

             (a) Upland/Rainfed Condition : Pusa 2-21; Turanta (only 75 days crop); Prabhat (only 90 days crop); C.R. 44-35 (Saket-4); Saroj; Birsa Dhan 105; Birsa Dhan 201; Birsa Dhan 202; Dhanlaxmi; Kanchan; Kalinga -III; Richharia; Aditya; Tulasi; Vandana.

File Courtesy: 
DRD, Patna
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