Systems of low-frequency tapping with the use of a stimulant in rubber plantations in Mato Grosso State
Material type:
TextPublication details: Pesquisa Agropecuaria Brasileira 1997Description: 51-56Subject(s): Online resources: Summary: In trials from September 1989 to December 1993, trees in 8-year-old stands of rubber clones IAN 873 and IAN 717 at 2 sites in Mato Grosso, Brazil were tapped on virgin bark 1.5 m above ground level at intervals of 2, 3, 4 or 7 days and were treated with the stimulant Ethrel [ethephon] at 2.5;at a rate of 1 ml solution/tree, 4, 6, 8 or 10 times annually, 3 days before tapping. Tapping at intervals of 4 or 7 days and stimulation 10 times/year gave the highest latex yields. Although IAN 717 was more prone to drying-out of the panel of bark, this clone produced significantly more dry rubber (1.29 t/ha per year) than clone IAB 873 (0.58 t) under the same conditions of production.
| Item type | Current library | Vol info | Status | |
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Journals
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RRII Library Physiology | Volume 32, Issue 1 | Journals |
Source Year: 1997
In trials from September 1989 to December 1993, trees in 8-year-old stands of rubber clones IAN 873 and IAN 717 at 2 sites in Mato Grosso, Brazil were tapped on virgin bark 1.5 m above ground level at intervals of 2, 3, 4 or 7 days and were treated with the stimulant Ethrel [ethephon] at 2.5;at a rate of 1 ml solution/tree, 4, 6, 8 or 10 times annually, 3 days before tapping. Tapping at intervals of 4 or 7 days and stimulation 10 times/year gave the highest latex yields. Although IAN 717 was more prone to drying-out of the panel of bark, this clone produced significantly more dry rubber (1.29 t/ha per year) than clone IAB 873 (0.58 t) under the same conditions of production.
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