HOW RICE DISEASES ARE THE 51st SHADE OF GRAY - barefoot farmbooks

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a cheat sheet on EFFECTIVE DISEASE OF MAIN FOOD CROP RICE:

Do you consume that white-grain thrice a day?

Well, do you ever consider what if they were diseased?

Let's have a quick view!

BLAST DISEASE



Causal Agent: Pyricularia grisea

Symptoms: 
  • It appears on leaves, nodes, panicle and grains
  • On The leaves, spots are typically spindle-shaped with more or less pointed ends with greyish centre sand Brown to reddish brown margins
  • Lesions may coalesce kill the entire leaf
Remedy:
  • Use of healthy seeds
  • Early sowing
  • Proper Transplanting
  • Some level of resistance has been recorded in IR- 20, IR-36 and IR-42.
  • Spray bavistin @0.2%
  • Orhinosan @ 0.1% with the initiation of leaf blast and repeat at neck blast stage.

BROWN SPOT:


Causal Agent: Drechslera oryzae

Symptoms:
  • Appears on leaves, coleoptiles, leaf sheath, and branches
  • A small circular spot which later on becomes oval brown in colour with grey or whitish centre
  • Black or dark spots appear on glume

Remedy: 
       disease and repeat after10-15days

SHEATH BLIGHT:

Causal Agent: Rhizoctonia solani

Symptoms: 

  • Appears on tillering and flowering stages of the crop.
  • The Lesions are ellipsoid to ovoid, varying from 1-3cm
  • length with a greyish white centre with brownish or red Or purplish red margin.

Remedy: 

  • Burning of the crop residues
  • Destruction of the collateral host
  • Crop rotation
  • Deep summer ploughing helps in reducing the inoculums


STEM ROT:



Symptoms:

  • Appears at the later stages of the Plant growth
  • symptoms appear as yellowing of the outer leaves In the culm.
  • Brown irregular lesion on the outer leaf sheath near the water line appears which later on cause discolouration to leaf sheath.

Remedy:
  • The burning of Diseased debris
  • Deep summer ploughing
  • Allowing The soil to bake before irrigation does help in Reducing the disease

FOOT ROT:


Causal Agent: Fusarium moniliforme

Symptoms: 

  • Most abnormal symptoms are an elongation of the infected plant
  • The infected plant becomes thin and Yellowish green in colour and is taller than a normal plant
  • Sometimes nodal rooting also takes place.

Remedy:

  • Crop rotation
  • Deep summer ploughing


FALSE SMUT:


Causal Agent: Ustilaginoidea virens

Symptoms:


  • It is confined to the ears
  • Due to fructification of the pathogen, scattered individual grains are converted into large, velvety green masses
  • Initially, the kernel colour is orange-yellow which later on turns into blackish.

Remedy:


  • Spray Blitox@0.25% at 50%flowering and repeat after 10 days interval


Before You Leave:


These are the main diseases that
Has been shown in rice crops in agronomic
field. Farmers should be cautious about this disease
and how to manage these diseases. Without control
the crop density will be less and occurs economically
the default of the farmer, thus they can save & develop
their rice crop from different disease through
management practices.
can you cast some other examples? we'll love to hear from you below!

From The Desk Of:

Debpriya Basu
Contact him via Email
Reviewed, Scrutinized and Edited by Divyacrotu Majumder (Admin, barefoot farmbooks)
Click here to Send him an email

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