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. Sahuri
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Agriculture, Biological Sciences & Forestry

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Pengaturan Pola Tanam Karet (Hevea brasiliensis Muell.Arg.) untuk Tumpang Sari Jangka Panjang . Sahuri
Jurnal Ilmu Pertanian Indonesia Vol. 22 No. 1 (2017): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (317.967 KB) | DOI: 10.18343/jipi.22.1.46

Abstract

Low prices of rubber have been a serious problem to rubber farmers. The rubber based intercropping system offers a practical solution to this issue and increasing overall productivity. This experiment was aimed to determine the suitable spatial arrangements in rubber planting to facilitate long-term rubber-based intercropping systems. A field experiment was established in a smallholder rubber plantation in the Tanah Laut District, South Kalimantan Province with an area of 700 ha and Musirawas District, South Sumatra Province with an area of 400 ha. The experiment using two planting patterns of rubber clone PB260: (1) single row planting pattern (SR) by 6 x 3 m, and (2) double row planting pattern (DR) by (18 + 2 m) x 2.5 m. The experiment showed that the girth of rubber trees in the SR system at the first tapping year was slightly bigger than that in the DR system, however, it was not statistically significant. The latex yield per tree of SR system was the same as the DR system, however latex yield per hectare of SR system has higher than the DR system, because the SR system have more population than the DR system. The DR system was proved to be a suitable planting system for long-term rubber based intercropping systems.
Hubungan antara Neraca Air Lahan dan Produksi Karet Klon PB260 . Sahuri
Jurnal Ilmu Pertanian Indonesia Vol. 23 No. 1 (2018): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.525 KB) | DOI: 10.18343/jipi.23.1.38

Abstract

In general, rubber production was influenced by fluctuation of monthly rainfall rate. This research was aimed to determine the effect of rainfall, evapotranspiration, and soil water content on the production of PB260 rubber clone. This research was conducted at Sembawa Research Centre Experimental Field, South Sumatera from the year 2013-2016. The observed rubber tree was mature PB260 clone planted on clay loam soil. Rubber productions on the dry and rainy season on 2013-2016 were compared to determine the effect of rainfall on rubber production. The results showed that soil water content has the closest relationship to rubber production compared to rainfall and evapotranspiration parameter. Latex yield was decreasing as the decrease of soil water content at dry season. Limited water during the dry season became a constraint of optimum rubber yield. When soil water content drops below 100 mm, the maximum attained latex yield was 18 g/t/t.
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