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Mejaya, Made Jana
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Agriculture, Biological Sciences & Forestry

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Keragaman dan Pengelompokan Sumber Daya Genetik Kacang Tunggak [Vigna unguiculata (L.) Walp.] Trustinah, Trustinah; Kasno, Astanto; Mejaya, Made Jana
Jurnal Penelitian Pertanian Tanaman Pangan Vol 1, No 2 (2017): Agustus 2017
Publisher : Pusat Penelitian dan Pengembangan Tanaman Pangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (330.756 KB) | DOI: 10.21082/jpptp.v1n2.2017.p165-172

Abstract

Cowpea [Vigna unguiculata (L.) Walp.] is a legume that  tolerant to drought and acid soil, that is prospective for development in sub-optimal area. A total of 150 cowpea accessions were grown at Muneng Research Station (Probolinggo) in dry seasson of 2014, using a randomized block design, with two replications.  Each accession were planted along  two rows of 4 m. The accession was varied for the qualitative and quantitative traits. Most of the accession had ovate leaf shape, flower color purple,  cream color of mature pod, and seed color brown to yellowish. Seed yield had a high phenotipic and genotypic coefficient of variation and genetic advance.  Low of phenotipic and genotypic coefficient of variation were shown on days to 50% flowering and days to physiological maturing.  Characteristics of cowpea accessions for eight variables 64.2% can be explained by three factors. The first factor relates to seed yield component (number of fertile nodes, number of branches, and seed weight), second factor associated with plant age (date of flowering and harvesting), and the third factor is the supporting factors (plant height, pod length, and number of seeds per pod). Accessions of cowpea could be divided into three groups. Date of flowering and harvesting were a determinant variable discriminant function. Group I consisting  70 accessions dominated by accessions with early maturity, medium plant height,   long pods, high number of seeds per pod and high seed yield.  Group II consisting of 47 accessions with moderate maturity, short plants, short pods, low number of seeds per pod and low seed yield. Group III consisting of 33 accessions was characterized by moderate maturity, high plant, short pods, high number of seeds per pod and high seed yield.
Analisis Keunggulan Kompetitif Ubikayu terhadap Jagung dan Kedelai di Kabupaten Lampung Tengah Asnawi, Robet; Mejaya, Made Jana
Jurnal Penelitian Pertanian Tanaman Pangan Vol 35, No 3 (2016): Desember 2016
Publisher : Pusat Penelitian dan Pengembangan Tanaman Pangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (89.771 KB) | DOI: 10.21082/jpptp.v35n3.2016.p209-215

Abstract

Cassava is a major food crops which widely developed in Lampung province, it caused   high adaptability, easily cultivated, smallest risk of failure, and high price. The study was objective to analyze competitive advantage of casava farming system compared to  maize and soybean farming system. The activity were conducted at Central Lampung regency from April 2012 to February 2013. The primary data were obtained from respondents with sample of 90 farmers, using survey methods with structured interviews and questionnaires. Secondary data were obtained from the office of relevant agencies and BPS Lampung. Data analysis were financial analysis and competitive advantage analysis. The results showed that cassava farming more profitable than maize and soybean farming system  income Rp.21.109.000/ha and R/C of 2,91 compared to corn farming income Rp.15.935.000 and R/C of 2,01 and soybean farming income Rp.5.187.800/ha and R/C of 1,48.  Cassava farming system will be competitive compared corn and soybeans farming on the productivity levels at least 34.567 kg/ha and 20,788 kg/ha and cassava price at least IDR 654/kg and IDR 394/kg.
Co-Authors Asnawi, Robet Kasno, Astanto Trustinah, Trustinah