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Soetanto Abdoellah
Indonesian Coffee and Cocoa Research Institute
Agriculture, Biological Sciences & Forestry

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Use of Cocopeat and Zeolite as a Seedling Media for Cocoa and Its Response to Some Levels of Available Water Leizy Free Agustin F; Soetanto Abdoellah; Cahyoadi Bowo
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 26 No 1 (2010)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v26i1.121

Abstract

Up to now, cocoa pod husk is commonly collected as heap nearby processing facilities or in the field and being considered as waste. To minimize the negative impact of the husks and to obtain added value an effort to develop the husk into granule fertilizer has been carried out. Fresh cocoa pod husk was hulled to obtain organic paste, then mixed with 5% zeolite and 5% rock phosphate powder (w/w). The mixture was kept for 2 weeks prior to granulation. The granules were characterized for their physical and chemical properties. Agronomic tests of the granules were conducted on coffee and cocoa seedlings as indicator plants. The tests were set according to completely randomized design and the treatments were arranged factorially. The evaluated treatments consisted of rates of granules and rates of inorganic fertilizer applications. The granules were applied at 7 levels: 0, 5, 10, 15, 20, 25 and 30 g/seedling. The granule treatments were combined with application of inorganic compound fertilizer at rates of 0 and 2 g fertilizer/application of N-P-K compound fertilizer of 15-15-15. The inorganic fertilizers were applied four times during experiment. The results indicated that the granule has high water holding capacity; cations exchange capacity, and high content of organic carbon and phosphorus. The growth of coffee and cocoa seedlings increased due to application of granules derived from cocoa pod husk. Responses of coffee and cocoa seedlings to granule application conformed to quadratic equations. The optimum application rate of granules was 14.5 g/seedling for Robusta coffee seedlings and 14.6 g/seedling for cocoa seedlings. Granule application may replaced role of inorganic fertilizer to increase growth of cocoa and coffee seedling.Key words: Cocoa pod husk, organic waste, seedling growth, zeolite, rock phosphate, minerals, Theobroma cacao L., Coffea canephora. 
Effectiveness of Humic Acid Application on Growth of Coffee Seedings Niken Puspita Sari; Soetanto Abdoellah
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 33 No 3 (2017)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v33i3.293

Abstract

Soil fertility is an important aspect to consider in a plantation because it can affect plantation productivity. Furthermore, degradation of soil fertility issue is increasing therefore it needs innovation to improve soil fertility. Humic acid is an alternative material which can be used for improving soil fertility and supporting plantation production. This research objective was to investigate the effectivenes of humic acid for growth of coffee seedlings. This research was done in Indonesian Coffee and Cocoa Research Institute green house. Experi-ment used completely randomized design trial with two factors. First factor was the materials used humic acid, coffee pulp compost, and manure. Second factor was doses of materials: 0 g, 10 g, and 30 g per 2 kg dry soil. Research parameters used plant height, number of leaves, stem diameter, wet weight, soil carbon, N, Pavailable, K available, and pH analysis. The results showed that humic acid 30 g significant increasing plant height and K available. Furthermore, humic acid dose 10 g and 30 g resulted root, stem diameter, and leaves weight were better than compost from coffee pulp and manure. Soil carbon was increase after humic acid, compost from coffee pulp, and manure application. Humic acid, compost from coffee pulp, and manure made soil pH were stabile.
Variability of nutrient absorption in several cocoa planting materials A. Adi Prawoto; Soetanto Abdoellah
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 6 No 2 (1990)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v6i2.373

Abstract

A study on nutrient absorption of Trinitario and Forastero cocoa types had been conducted in Kaliwining Experimental Garden and the laboratory of plant analysis of the Jember Research Institute for Estate Crops (JRIEC) since June 1987 until March 1988. Trinitario type was represented by four groups of cultivars i.e.Djati Roenggo (three DR series) Djati Roenggo Clone (13 DRC series), Kaliwining Clone (six KWC series), and Imperial College Selection (three ICS series). Forastero type was represented by two groups of cultivar, i.e. Getas Clone ( seven GC series),and Scavina (three Sea series). The seedlings of propelegitimate seeds were used. The results showed that under the same environmental condition there were significant differences between the two cocoa types in the absorption of K, Mg, Cu, and Mn. Trinitario type showed high absorption for K and Mn, but lower in the absorption of Mg and Cu compared to Forastero type. Among cultivar's group within Trinitario type there were differences in the absorption of N, P, K, Mg, Cu, and Mn. ICS group showed high absorptionfor N, KWC for P and K, DRC for Cu, ICS for Mn, and DR, DRC and ICS for Mg. In the Forastero type, GC group showed high absorption for P, but Sea group had the highest absorption capacity for K, Mg, and Mn. No significant difference was observed between the series within each cultivar group.
Co-Authors A. Adi Prawoto Cahyoadi Bowo Leizy Free Agustin F Niken Puspita sari