Performance of clone PB260 in a large plantation group in Peninsular Malaysia. - (:unkn) unknown (My University)
The Hevea clone PB260 is extensively planted in Peninsular Malaysia. It occupied 8620 ha (27.9%) of the total rubber area) in 1996. It has dense foliage and above average resistance to major leaf diseases. It performed well in terms of growth and latex yield when compared with both traditional and newer clones. It has a straight trunk with light self shedding branches and yields twice as much timber as RRIM600. During its immature stage, PB260 grew best (exceeding 50 cm in 60 months) in Selangor, Perak and Pahang compared with other states. Winter depression was also generally less severe and tree dryness was reported to be lower in these states. PB260 exhibited good yields when tapped on virgin bark; yields from areas previously tapped were low due to poor condition of the bark. The lifespan of trees may be reduced to 26 years from the normal 30 years if tapping is confined to virgin panels only. PB260 is a good choice of clone for replanting. Trees could be exploited on a reduced lifespan of 26 years whereby virgin panels are tapped for their high yields and trees subsequently felled for their valuable timber.
The Hevea clone PB260 is extensively planted in Peninsular Malaysia. It occupied 8620 ha (27.9%) of the total rubber area) in 1996. It has dense foliage and above average resistance to major leaf diseases. It performed well in terms of growth and latex yield when compared with both traditional and newer clones. It has a straight trunk with light self shedding branches and yields twice as much timber as RRIM600. During its immature stage, PB260 grew best (exceeding 50 cm in 60 months) in Selangor, Perak and Pahang compared with other states. Winter depression was also generally less severe and tree dryness was reported to be lower in these states. PB260 exhibited good yields when tapped on virgin bark; yields from areas previously tapped were low due to poor condition of the bark. The lifespan of trees may be reduced to 26 years from the normal 30 years if tapping is confined to virgin panels only. PB260 is a good choice of clone for replanting. Trees could be exploited on a reduced lifespan of 26 years whereby virgin panels are tapped for their high yields and trees subsequently felled for their valuable timber.
Keywords: Caucho.; Enfermedades de las plantas.; Hojas.; Métodos de cultivo.