Question: query regarding varieties of rubber 
Answer: varieties: tjir 1, pb 86, bd 5, bd 10, pr 17, gt 1, rrii 105, rrim 600, pb 28/59, pb 217, pb 235, rrim 703, rrii 5, pck-1, 2 and pb 260
soil and climate: it requires deep and lateritic fertile soil with an acidic ph of 4.5 to 6.0. tropical climate with annual rainfall of 2000 – 4500 mm is suited for cultivation. minimum and maximum temperature should be ranged from 25 to 34°c with 80 % relative humidity is ideal for cultivation. regions prone to heavy winds should be avoided.
season: june – july is optimum for cultivation