Agriculture
Crop Production :: Pulses :: Castor
 

CASTOR (Ricinus communis)

CROP IMPROVEMENT

I. SEASON AND VARIETIES

DISTRICT/SEASON VARIETIES
A. Rainfed
1.Adipattam (Jun-July)
All districts Variety : TMV 5, TMV 6
  Hybrid : TMVCH 1, YRCH 1
B. Irrigated
1.Vaigasi pattam (May - June)
All distiricts Hybrid : YRCH 1
2.Karthigaipattam (Nov - Dec)
All districts Hybrid : YRCH 1
3.Panguni pattam (March- Apr)
All districts Hybrid : YRCH 1
C. Gardenland (border)
1.Perennial
All districts Variety : CO 1
Castor

II. DESCRIPTION OF CASTOR VARIETIES

Particulars CO 1 TMV 5 TMV 6 Hybrid TMVCH 1 Hybrid YRCH 1
Parentage Pureline selection from Anamalai Derivative of SA 2 X S 248/2 Derivative of VP 1 X RC 962 LRES 17 X TMV 5 DPC 9 X TMV 5
Duration (days) perennial 120 160 160 -170 150-160
Yield (kg/ha)          
Rainfed (mixed -   500 600  
crop)          
Rainfed (pure crop) 2.5 kg/tree/year 850 950 1300 2000
Irrigated (pure crop) - - - - 3000
Oil content (%) 57 50 51.9 51.7 49
Special features
Stem colour Pinkish green Rose Red Red Light red
Bloom (waxy coat) No bloom Triple Double Triple Triple
Receme / capsule Bold, sparse setting, non dehiscent Spiny, non dehiscent, resistant to leaf hopper Medium, lengthy, spiny capsule Semi compact, spiny capsule Spiny, non dehiscent, resistant to leaf hopper
Suitability Bund crop and fit for raising in vacant areas Pure and mixed crop Pure and mixed crop Pure and mixed crop Pure and mixed crop

Castor YRCH1

Castor0001

 1. Preparation of the field

      Plough two-three times with country or mould board plough.

2. Application of Organic Manures

      Spread 12.5 t/ha of FYM or compost evenly on the main field before last ploughing and incorporate in to soil by working a country plough. Apply 30 kg sulphur/ ha through gypsum at the time of last ploughing for higher castor yield.

NOTE: Do not leave FYM or compost exposed to sunlight as nutrients will be lost.

3. SEED RATE

      Adopt a seed rate of 10 kg/ha for varieties and 5 kg/ha for hybrid.

4. SPACING

 Adopt the following spacing.

  Rainfed situation Irrigated situation
Varieties 90 cm x 60 cm 90 cm x 90 cm
Hybrids 120 cm x 90 cm 150 cm x 120 cm

In irrigated conditions, for clay soils wider spacing of 150 x 150 cm can also be adopted. For TMV 5 short duration variety 60 x 30 cm may be adopted.

5. APPLICATION OF FERTILIZERS

Apply NPK fertilizers basally as per soil test recommendations as far as possible.
If soil test recommendations are not available, follow the blanket recommendation as follows

  Recommended  NPK kg/ ha
Rainfed conditions
Varieties 45 : 15 : 15 NPK kg / ha
Hybrids 60 : 30 : 30 NPK kg / ha
Irrigated condition
Varieties 60 : 30 : 30 NPK kg / ha
Hybrids 90 : 45 : 45 NPK kg / ha
  • In rainfed situations apply 100% P & 50% N&K basally & remaining quantity may be applied in one or two top dressings based on the soil moisture availability.
  • In irrigated situations apply 100% P & 50% N&K as basal & remaining quantity N&K may be applied in two equal splits at 30th & 60th DAS.
  • Apply 12.5 kg ZnSO4 ha-1 (if the soil available Zn is < 1.2 ppm) and 25 kg FeSO 4 ha-1 (if the soil available Fe is < 3.7 ppm for non calcareous soil and < 6.3 ppm for calcareous soil )

6. PRE TREATMENT OF SEEDS

  • Treat the seeds with Carbendazim @ 2 g/kg of seed.
  • Soak the seeds in water for 20 hours.
  • In rainfed situations, seed priming with 1% Kcl for 3 hours and sowing a week before onset of monsoon is recommended.

7. SOWING

  • Sow the seeds adopting the recommended spacing.
  • Place the seeds at depth 4 - 6 cm.
  • Put one seed in each hole.

8. GAP FILLING

Gap fill on the 15th day of sowing and simultaneously thinning may be done leaving one healthy plant.

9. WEED MANAGEMENT

Apply pre emergence herbicide Pendimethalin @ 3 lit/ha or Fluchloralin @ 2 lit/ha on 3 DAS followed by hand weeding twice on 20th & 40th DAS.

10. INTERCROPPING

      Raise one row of castor for every six rows of groundnut. In the case of late receipt of monsoon blackgram + castor at 6:1 ratio is recommended. Or Intercropping of castor with Blackgram or Greengram in 1:2 ratio is recommended for rainfed situation. Intercropping of castor with onion in 1:2 ratio by adopting 1.5 m x 1.0 m spacing is recommended for irrigated situation.

11. HARVESTING THE CROP

      Observe the crop considering the average duration of the variety.

  • One or more capsules show sign of drying.
  • Cut the matured racemes without damaging the secondaries.
  • Dry the capsule in the sun without heaping it in the shade.
  • Use castor sheller to separate the seeds or beat the dried capsule with wooden planks, winnow and collect the seeds.

Crop Protection

Post Harvest Technology

Updated on : April 2014