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01
Nov

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.

01
Nov

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.

3. A hole is

01
Nov

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.

3. In severely in

01
Nov

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.

3. The ce

01
Nov

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.

        (b) As Pre-Emergence: Spray Alachlor 50 E.C.

01
Nov

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.
01
Nov

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.

C). Spacing: Th

01
Nov

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.

01
Nov

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.
01
Nov

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.

            (b) M

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