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Types of weeds that attack castor crops and their remedies.

These are the types of weeds that attack castor crops and their remedies:

Types of Weeds:
 * Broadleaf Weeds:
   * Amaranthus viridis
   * Boerhaavia diffusa
   * Celosia argentena
   * Portulaca oleracea
   * Trianthema portulacastrum
   * Digera arvensis
   * Corchorus olitorius
   * Cyanotis cucullata
   * Cleome viscosa
   * Commelina bengalensis
   * Croton sparsiflorus
   * Parthenium hysterophorus
 * Grasses:
   * Chloris barbata
   * Cynodon dactylon
   * Dactyloctenium aegyptium
   * Bracharia reptens
   * Panicum flavidum
 * Sedges:
   * Cyperus rotundus
   * Cyperus esculentus

Remedies:
 & Cultural Practices:

   * Intercultivation: Using tractor or bullock-drawn blade harrows, especially 20 to 60 days after seeding, is effective.

   * Manual Weeding: Hand weeding within the rows complements intercultivation.

   * Square Planting: This allows for blade harrowing in both directions.

  Chemical Control (Herbicides):

   * Pre-emergence herbicides like pendimethalin, alachlor, metolachlor, and others.

   * Post emergence herbicides.
    It is very important to follow the instructions on the herbicide packaging, and to adhere to local agricultural regulations.

 * Integrated Weed Management:
   Combining cultural practices with judicious herbicide use.

   * Paying close attention to the critical weed competition period, which is generally within the first 20 to 60 days after seeding.

Important Considerations:

 * Castor crops are particularly vulnerable to weed competition during their early growth stages.

 * The choice of weed control method may depend on factors like whether the crop is rainfed or irrigated.
 * Always consult local agricultural extension services for the most up to date and region specific recommendations.

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