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Agriculture > Plantation Crops > Rubber (Hevea brasiliensis)

Crop Management

Clones

The planting materials approved by the Rubber Board are classified in to three categories I, II and III.

Category I

Approved for large scale planting. However, it is strongly recommended that these may be used to cover only 50% of the total area of any estate or small holding.

Category II

Clones, which have shown their good performance in India over long term or medium term periods. It is recommended that three or more of these clones be used to plant up to 50 per cent of the total area of any estate or small holding. Cattle manure and 4 kg of rock phosphate for every 100 m2 of of nursery bed is recommended as basal dressing. When the same area is repeatedly used, rock phosphate needs to be applied only once in three years. Application of 275 kg urea, 700 kg rock phosphate, 85 kg muriate of potash and 235 kg magnesium sulphate or 1250 kg 10-4-1.5 NPKMg mixture and 118 kg magnesium sulphate per hectare 6-8 weeks after planting is recommended. Zinc sulphate @ 25kg/ha may be applied 2 weeks after the fertilizer application. After 6-8 weeks from first fertilizer application, urea may be applied at 275kg/ha. Subsequently application of zinc sulphate in the nursery may be carried out on soil test basis.

Category III

Planting materials are divided into

  1. Those, which have held out promise of good performance in small-scale trials, and over short term in some large scale trials in India or abroad. Hence these are approved only for experimental planting
  2. Old selections having promising localized performance or having desirable secondary attributes. In regions where these clones are showing very good performance, no restriction in planting is insisted. Modern clones with moderate scale performance are included in division
  3. Other experimental clones of promising yield and/or desirable secondary characters with limited data are included in division
  4. Selections from any of these are recommended for very small scale planting not exceeding 15 per cent of the total area
Category I Clones RRII 105, PB 260, RRII 414 and RRII 430  (RRIM 600 and GT 1 in non traditional areas),RR11 422
Category II Clones RRIM 600, GT 1, RRII 5, RRII 203, PB 28/59, PB 217, RRII 414, RRII 417, RRII 422 RRII 703 , RRII 430 , PB 255, PB 280, PB 312, and PB 314
Category III Clone RRII 50, RRII 51, RRII 52, RRII 118, RRII 176, RRII 208, RRII 300, RRII 429,RRII 203,  PR 107, PR 255, PR 261, PB 86, PB 5/51, PB 235, PB 255, PB 280, PB 311, PB 312, PB 314, PB 330, PB 6/9, RRIM 605, RRIM 701, RRIM 703, RRIM 712, RRIM 623, RRIM 628, RRIC 100, RRIC 102, RRIC 130, KRS 163, IRCA 111, IRCA 109, IRCA 130, SCATC 88-13, SCATC 93-114, Haiken 1, BPM 24, Tjir 1 and Polyclonal seeds

Clones evolved and released from RRII

Clone Parentage Status
RRII 105 Tjir 1 x Gl 1 Category I
RRII 5 Primary clone Category III (a)
RRII 203 PB 86 x Mil 3/2 Category III (a)
RRII 118 Mil 3/2 x Hil 28 Category III (c)
RRII 208 Mil 3/2 x AVROS 255 Category III (c)
RRII 50 Primary clone Category III (d)
RRII 51 Primary clone Category III (d)
RRII 109 Tjir 1 x Mil 3/2 Category III (d)
RRII 116 Mil 3/2 x Hil 28 Category III (d)
RRII 176 Mil 3/2 x PB 5/60 Category III (d)
RRII 300 Tjir 1 x PR 107 Category III (d)
RRII 308 Gl 1 x PB 6/50 Category III (d)
RRII 414 RRII 105 x RRIC 100 Category III (d)
RRII 417 RRII 105 x RRIC 100 Category III (d)
RRII 422 RRII 105 x RRIC 100 Category III (d)
RRII 429 RRII 105 x RRIC 100 Category III (d)
RRII 430 RRII 105 x RRIC 100 Category III (d)
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