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Asep Rohandi
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Agriculture, Biological Sciences & Forestry

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 1 
Productivity and Quality of Three Varieties of Ginger on Many Light Intensity Levels Under Stand of Pine Gunawan - Gunawan; Asep Rohandi
Jurnal Agroforestri Indonesia Vol 1, No 1 (2018): Jurnal Agroforestri Indonesia
Publisher : Balai Litbang Teknologi Agroforestry, Ciamis

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (567.396 KB) | DOI: 10.20886/jai.2018.1.1.1-13

Abstract

The high demand of medicinal plants with limited agricultural land availability can be solved by the utilization of land under forest canopy through applying agroforestry. This study aims to assess the effect of different varieties of ginger and different shading intensities of pine (Pinus merkusii) on the productivity and quality of ginger. The design used was a split plot design consisting of 3 replicates with an area of  100 m2 for each plot and with spacing of 50 x 50 cm. The main plot is the light intensity treatments, i.e. 50-58% (age class II), 68-77% (age class I) and 87-92% (poor increment), whereas the sub plot is the varieties of ginger i.e.: small white ginger (emprit), large white ginger (gajah) and red ginger. Results showed that the light intensity does not significantly affect the percentage of growth, moisture content, volatile oil, fiber, starch and ash. Varieties of ginger significantly affect the percentage of growth, height growth and weight of rhizome, but do not significantly affect the moisture content, volatile oil, fiber, starch and ash . The average yield of each variety of ginger is 5.54 tons/ha, 8.38 tons/ha and 6.7 ton /ha for small white ginger, large white ginger and red ginger, respectively. Agroforestry of ginger plant under pine stand can be done to improve land productivity, especially in poor stand increment.
KETAHANAN SENGON PROVENAN PAPUA UMUR 2 TAHUN TERHADAP KARAT TUMOR PADA UJI RESISTENSI DI CIAMIS, JAWA BARAT Asep Rohandi; Gunawan Gunawan
Jurnal Agroforestri Indonesia Vol 2, No 1 (2019)
Publisher : Balai Litbang Teknologi Agroforestry, Ciamis

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.271 KB) | DOI: 10.20886/jai.2019.2.1.37-50

Abstract

The Effect of Manure Application to 3 years old of Teak (Tectona grandis. L. f) Growth in Intercropping Land Gunawan Gunawan; Asep Rohandi
Jurnal Agroforestri Indonesia Vol 2, No 2 (2019)
Publisher : Balai Litbang Teknologi Agroforestry, Ciamis

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (328.684 KB) | DOI: 10.20886/jai.2019.2.2.63-74

Abstract

Planting system with one species continuously causes the degradation of  land and the decline of plant productivity.  It also occurs in teak (Tectona grandis L. f.) plantation. Application of  manure in intercropping pattern was expected to improve the quality of the soil. This study aims to determine the effect of manure on 3 years old teak productivity and to develop of site management model in silvicultural practices to increase the teak plantation  productivity. This study used a completely randomized block design with 8 treatments, 4 replications and 100 plants for each plot. . Tree spacing was 3 x 3 meters. The parameters observed were high and diameter of teak. Statistical analysis used was variance analysis at the 0.05 and 0.01 level test.  It was continued by a tendency or trend test for the treatment. The results showed that the manure  application 30 tons/ha  with intercropping gave the most positive growth compared  to other treatments. Meanwhile, intercropping provides better plant compared to non-intercropped plants.
Co-Authors Gunawan - Gunawan Gunawan Gunawan