IARA Vol. XXV No. 2 Th. 2008 (pdf, 1001, kb) - Pustaka Deptan

Vol. 25, No. 2, 2008Indonesian Agricultural Research AbstractsE70TRADE, MARKETING AND DISTRIBUTION162 BACHREIN, S.Pengkajian keragaan usaha tani dan sistem distribusi bibit kentang di Jawa Barat. [Assessment ofpotato seed production performance and distribution system in West Java (Indonesia)]/Bachrein, S.(Balai Pengkajian Teknologi Pertanian Jawa Barat, Lembang (Indonesia)) 7 ill., 7 tables; 15 ref.Summaries (En, In). Jurnal Pengkajian dan Pengembangan Teknologi Pertanian (Indonesia) ISSN 1410-959x (2004) v. 7(2) p. 125-138.SOLANUM TUBEROSUM; SEED POTATOES; MARKETING MARGINS; PRODUCTIVITY;EFFICIENCY; FARMING SYSTEMS; ECONOMIC ANALYSIS.The assessment was conducted in 2002 at Pangalengan, Rancabali, and Ciwidey Subdistricts, BandungDistrict, West Java. Objectives of this study were: (1) to identify and collect data on distribution system ofpotato seed (seedling), and (2) to arrange and present database on distribution system potato seed(seedling). Data were collected through desk study (literature/report review), and rapid rural appraisal(RRA) approaches. Results of the study indicated that the productivity and efficiency of potato/potatoseedproduction in West Java were relatively low. It is possible to enhance by intensification programfocused on balanced fertilizer application rates, farm management, pest control, as well as harvesting andpostharvest technology improvement. The production of high quality potato-seed during the period of2002 only 1.6% (560.8 ton) of the province's need (35,787.6 ton) because of low productivity withunbalanced distribution of potato seed production. In 2002, about 60.8% of potato seed production in WestJava (1,430.6 ton) was distributed to other provinces, namely Sumatra (32.2%), Central Java (14.3%), EastJava (3.6%), and Sulawesi (10.7%). In general, market structure of potato seed in West Java was relativelycompetitive. Distribution of potato seed was relatively efficient with margin of 19.2-30.8% and the seedgrowers received about 76.5% of the retail price. To develop sustainable potato seed production in WestJava, it is necessary to improve productivity and efficiency of farming system as well as to createconducive socio-economic conditions of the growers.F01CROP HUSBANDRY163 RIAJAYA, P.D.Kerapatan galur harapan kapas pada sistem tumpangsari dengan kedelai. Density of new cotton linesunder intercropping system with soybean/Riajaya, P.D.; Kadarwati, F.T. (Balai Penelitian TanamanTembakau dan Serat, Malang (Indonesia)) 1 ill., 6 tables; 16 ref. Summaries (En, In). Jurnal PenelitianTanaman Industri (Indonesia) ISSN 0853-8212 (2003) v. 9(1) p. 11-16.GOSSYPIUM HIRSUTUM; GLYCINE MAX; SPACING; CROPPING SYSTEMS; GROWTH;YIELDS.The field trial was conducted at Mojosari, East Java from May to October 2000 on the rice field afterharvesting. The purpose of the study was to investigate the optimum population for new cotton lines underintercropping with soybean. The field experiment was arranged in a split plot design with threereplications. Four new cotton lines were allocated to main plots: 92016/6, 91001/29/2 (okra leaf),88003/16/2 and Kanesia 7. Three crop arrangements were allocated to subplots: 1(1): 3 [1 cotton row (1plant/hole) between 3 rows of soybean]; 2(1): 4 [2 cotton rows (1 plant/hole) between 4 rows of soybean],and 1(2): 3 [1 cotton row (2 plants/hole) between 3 rows of soybean]. Two replications for sole crops ofcotton and soybean were included in this experiment to compare both cropping systems. Research showedthat by keeping one cotton plant/hole in arrangement of 1:3 [1 cotton row between 3 rows of soybean],increased the photosynthetic efficiency from 5.9 x 10 -4 to 9.4 x 10 -4 mg CO 2 /mg H 2 O, causing cotton yieldincreased from 1167.2 to 1251.6 kg/ha; however soybean yield did not differ between differentproportions of cotton and soybean (846 kg/ha). Under arrangement of two cotton rows + four rows ofsoybean, the photosynthetic efficiency increased from 5.9 x 10 -4 to 7.7 x 10 -4 mg CO 2 /mg H 2 O resulted inincreased cotton yield from 1 167.2 to 1 206.2 kg/ha. The yield of line 88003/16/2 (1 323.3 kg/ha) did not100