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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Indonesian Journal of Agricultural Science MEDISAINS BERITA BIOLOGI Jurnal Analisis Bisnis Ekonomi
Suyamto Suyamto
Balai Penelitian Tanaman Kacang-kacangan dan Umbi-umbian, PO Box 66 Malang Telp. (0341) 801468
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Medicine & Pharmacology Nursing Public Health

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IMPACT OF BRACHIARIA, ARBUSCULAR MYCORRHIZA, AND POTASSIUM ENRICHED RICE STRAW COMPOST ON ALUMINIUM, POTASSIUM AND STABILITY OF ACID SOIL AGGREGATES Hafifa, Bariot; Sabiham, Supiandi; Anas, Iswandi; Sutandi, Atang Sutandi; Suyamto, Suyamto
Indonesian Journal of Agricultural Science Vol 13, No 1 (2012): April 2012
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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Abstract

Acid soil is commonly grown with cassava, which in general, tolerate low soil  fertility and aluminum (Al) toxicity. However, without any improvement efforts such soil will become worse. Intercropping cassava with Brachiaria decumbens (BD) which adapts to acid soil and tolerates low fertility soils as well as application of arbuscular mycorrhiza (AM) and organic matters are among the important efforts to rehabilitate this soil. The experiment was conducted to  examine the impact of BD, AM, and potassium (K) enriched rice straw compost on exchangeable Al, available K, and stability of soil aggregates. Experiment was arranged in a completely randomized design with three factors and three replications. The first factor was BD as cassava intercropping, the second factor was AM, and the third factor was 2 t ha-1 rice straw compost enriched with 0 kg, 50 kg, 100 kg, and 200 kg KCl ha-1. Brick pots (1 m length x 1 m width x 0.45 m depth) filled with Kanhapludult soil was used for growing cassava in which row of BD was planted at 60 cm from cassava stem. K-enriched rice straw compost and AM (10 g per stem) were applied around cassava stem at 2 and 12 days after planting, respectively. BD was cut every 30 days and the cutting was returned to the soil. Soil exchangeable Al was analyzed at 0, 3, 6 and 9 months after planting (MAP), while Al and K contents as well as aggregate stability were measured at 6 MAP. The results showed that planting BD decreased 33% exchangeable Al, which means that the root exudates of this grass was effective in detoxifying Al3+. Treatment of BD and/or in combination with AM was effective in preserving K added to the soil, increasing total polysaccharides, and improving soil aggregate stability. This indicated that planting BD and applying AM and Kenriched rice straw compost improved acid soil fertility, and therefore can be recommended in cassava cultivation.
GENETIC VARIABILITY, HERITABILITY AND EXPECTED GENETIC ADVANCES OF QUANTITATIVE CHARACTERS IN F2 PROGENIES OF SOYBEAN CROSSES Hakim, Lukman; Suyamto, Suyamto; Paturohman, Eman
Indonesian Journal of Agricultural Science Vol 15, No 1 (2014): April 2014
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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The F2 progenies of crosses among three soybean varieties were evaluated with their parents at Ngale Experimental Farm, Ngawi, East Java during the dry season of 2011. The experi-ment was conducted in a randomized block design with three replications. The seeds of each F2 progenies and parents were planted in two rows of 4.5 m long. Plant spacing was 40 cm x 15 cm and each hill contained one plant. Among the characters studied, seed weight per plant, number of pods per plant and days to maturity had the highest coefficient of variability with the means of 52.6%, 48.2% and 41.9%, respectively. Whereas seed size, plant height and number of reproductive nodes had moderate values of 36.9%, 35.5% and 37.4%, respectively. Number of branches and days to flowering had the lowest variability of 11.7% and 15.3%, respectively. Number of pods per plant, days to maturity, plant height and seed size had high mean estimates of heritability coupled with high genetic advance. The genetic progress of these characters that would be obtained for one generation of selection was estimated 47.2%, 45.7%, 40.9% and 40.3%, respectively. Among the agronomic characters, plant height, number of pods per plant, seed size and days to maturity had the highest coefficient of variability associated with high heritability and genetic advance. Therefore, selection for high yielding with early maturity soybean genotypes based on plant height, number of pods per plant and seed size might be possible.
PENGARUH RELAKSASI OTOT DALAM MENURUNKAN SKOR KECEMASAN TTMAS MAHASISWA MENJELANG UJIAN AKHIR PROGRAM (UAP) DI AKADEMI KEPERAWATAN NOTOKUSUMO Suyamto, Suyamto
medisains Vol 11, No 2 (2012)
Publisher : medisains

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Background: Anxiety is a disorders that has symptoms of heart, dizzy, wet palm and foot or emotionaldisorders such as discomfort feeling, difficult to concentrate, worried, exhaustness, insomnia, less appetite. Thiscondition often occurred in students of Nursing Academy of Notokusumo Yogyakarta when they are facing finalexamination. This is obtained from a preliminary research that was conducted by giving question on thecondition experienced by the students of Akper Notokusumo Yogyakarta regarding their worryness in facing theexamination with subject of 100 students that was held on the 8th – 11th of Mey 2012Objective: This research was aimed to find out the influence of muscle relaxation in decreasing the TMASanxiety score of students in facing their final examination.Method: This was a quasi experimental design with randomized control group pre test and post test design thatwas research subjects who were classified into two groups that were treatment group that was located in AkperNotokusumo with 100 students class 3A and 3B control group that was located in Akper Notokusumo withsubjects of 50 students class 3 C. Both of the groups were given pre test before given treatment, and yet, onegroup was given post test after treatment while the other group was given post test without treatment. Theintsrument being used was Taylor Manifest Anxiety Scale (TMAS). The analysis being used to examine thedifference of treatment and control group was conducted with independet sample t test with significance level ofp = 0.05.Result : The result of the research showed that there was a decreasing on anxiety from pre test to post test. Incontrol group, there was no decreasing of anxiety from pre test to post test even there was an improvementduring post test.Conclusion: Relaxation had influence in decreasing anxiety of student of Nursing Academy of NotokusumoYogyakarta as treatment group and the result was lower during post test compared to pre test.Keyword: anxiety, to relaxation, student
KORELASI ANTAR-KARAKTER DAN SIDIK LINTAS ANTARA KOMPONEN HASIL DENGAN HASIL BIJI KACANG HIJAU (Vigna radiata (L) Wilczek) [Correlation Among Characters and Path Analyses Between Yield Components with Grain Yiled on Mungbean (Vigna radiata (L) Wilczek)] Hakim, Lukman; Suyamto, Suyamto
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (174.326 KB) | DOI: 10.14203/beritabiologi.v11i3.504

Abstract

A total of 10 mungbean (Vigna radiata (L.) Wilczek) genotipes including check variety (Vima) were evaluated on rainfed after rice at Ngale Experimental Farm, Ngawi, East Java during early dry season of 2010. The experiment was conducted in randomized complete block design with three replications. Plot size was 4 m x 5 m, plant spacing was 40 cm x 20 cm, each hill contained two plants. A correlated and path coefficient analyses were used in order to determine the association among characters and quantify the direct and indirect effects of agronomy traits on seed yield. The study has identified 2 promising lines, i.e. MMC342d-3-4 and MMC342d-kp-3-3 produced the highest yield of 2.2 t and 2.0 t/ha respectively and had good adaptation on rainfed. Two varieties (Kutilang and Kenari) having large seed size (>7.5g/100 seed). Therefore, these varieties can be used as source of parents on breeding program. Among the agronomic characters, number of pods per plant, number of seeds per pod and seed size were positively and significantly correlated with grain yield. The direct effect of number of pods per plant, number of seed per pod and seed size to grain yield as indicated by path coefficient were the highest, while other causal effects to grain yield were small or negative. Based on both analyses, mungbean genotipes with high grain yield should have high number of pods per plant, number of seeds per pod and large seed size. Therefore, number of pods per plant, number of seeds per pod and seed size can be suggested for selection criteria in selecting high yield mungbean genotipes on rainfed.
KEPUASAN KERJA, KOMITMEN ORGANISASI, MOTIVASI, DAN GAYA KEPEMIMPINAN TERHADAP KINERJA MANAJERIAL PEMERINTAH DAERAH Supartini, Supartini; Suyamto, Suyamto
Jurnal Analisis Bisnis Ekonomi Vol 13 No 2 (2015): Volume 13, Nomor 2, Oktober 2015
Publisher : Universitas Muhammadiyah Magelang

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Abstract

Penelitian ini memiliki lima tujuan yakni: 1) menguji secara empiris pengaruh kepuasan kerja terhadap kinerja manajerial Pemda, 2) menguji secara empiris pengaruh komitmen organisasi terhadap kinerja manajerial Pemda, 3) menguji secara empiris pengaruh motivasi terhadap kinerja manajerial Pemda, 4) menguji secara empiris pengaruh gaya kepemimpinan terhadap kinerja manajerial Pemda, dan 5) menguji secara empiris pengaruh kepuasan kerja, komitmen organisasi, motivasi dan gaya kepemimpinan secara bersama-sama terhadap kinerja manajerial Pemda. Teknik pengambilan sampel dalam penelitian ini menggunakan random sampling. Data yang digunakan merupakan data primer, yang diperoleh dengan menyebarkan kuesioner pada pejabat eselon III dan eselon IV di pemerintah daerah Kabupaten Karanganyar. Pengujian hipotesis menggunakan Analisis Regresi Linier Ganda. Hasil penelitian menunjukkan kepuasan kerja, komitmen organisasi dan gaya kepemimpinan berpengaruh positif terhadap kinerja manajerial. Sedangkan motivasi berpengaruh negatif terhadap kinerja manajerial. Kepuasan kerja, komitmen organisasi, motivasi dan gaya kepemimpinan secara bersama-sama berpengaruh terhadap kinerja manajerial pemerintah daerah kabupaten Karanganyar.
Khelatisasi Ion Aluminium oleh Asam Organik Eksudat Akar Brachiaria Hafif, B.; Sabiham, S.; Iswandi, A.; Sutandi, A.; Suyamto, Suyamto
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 15, No 3 (2010): October 2010
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (389.978 KB) | DOI: 10.24002/biota.v15i3.2585

Abstract

Aluminum toxicity is one of the major factors inhibiting plant growth in acid soils. Brachiaria grass adapt to high Al concentration. This experiment was conducted to study exudation of low molecular weight organic acids (LMWOA) activated by Al, from Brachiaria roots and its potential in chelating Al. Three Brachiaria species, i.e. B. decumbens, B. ruziziensis and B. brizantha, planted in sterile sand culture and were treated with 5 Al concentrations (0, 100, 200, 300 and 400 μM). After two-month experiment, three kinds of LMWOA, i.e, malic, citric, and oxalic acids, produced by the three Brachiaria-root exudates were measured in the sand culture. The production of malic acid was higher than that of citric and oxalic acid. Those organic acids were influenced by Al concentration; the higher Al concentration the higher organic acid content would be. The organic acids were also proved to form Al-organic compounds effectively of which B. decumbens and B. brizantha were more effective in chelating Al at relatively low Al (100 μM) and at relatively high Al concentration (300 μM and 400 μM), respectively.
KEPUASAN KERJA, KOMITMEN ORGANISASI, MOTIVASI, DAN GAYA KEPEMIMPINAN TERHADAP KINERJA MANAJERIAL PEMERINTAH DAERAH Supartini, Supartini; Suyamto, Suyamto
Jurnal Analisis Bisnis Ekonomi Vol 13 No 2 (2015): Volume 13, Nomor 2, Oktober 2015
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (162.989 KB)

Abstract

Penelitian ini memiliki lima tujuan yakni: 1) menguji secara empiris pengaruh kepuasan kerja terhadap kinerja manajerial Pemda, 2) menguji secara empiris pengaruh komitmen organisasi terhadap kinerja manajerial Pemda, 3) menguji secara empiris pengaruh motivasi terhadap kinerja manajerial Pemda, 4) menguji secara empiris pengaruh gaya kepemimpinan terhadap kinerja manajerial Pemda, dan 5) menguji secara empiris pengaruh kepuasan kerja, komitmen organisasi, motivasi dan gaya kepemimpinan secara bersama-sama terhadap kinerja manajerial Pemda. Teknik pengambilan sampel dalam penelitian ini menggunakan random sampling. Data yang digunakan merupakan data primer, yang diperoleh dengan menyebarkan kuesioner pada pejabat eselon III dan eselon IV di pemerintah daerah Kabupaten Karanganyar. Pengujian hipotesis menggunakan Analisis Regresi Linier Ganda. Hasil penelitian menunjukkan kepuasan kerja, komitmen organisasi dan gaya kepemimpinan berpengaruh positif terhadap kinerja manajerial. Sedangkan motivasi berpengaruh negatif terhadap kinerja manajerial. Kepuasan kerja, komitmen organisasi, motivasi dan gaya kepemimpinan secara bersama-sama berpengaruh terhadap kinerja manajerial pemerintah daerah kabupaten Karanganyar.
Co-Authors Atang Sutandi Bariot Hafifa Eman Paturohman Hafif, B. Iswandi Anas Iswandi, A. Lukman Hakim S. Sabiham Supartini Supartini Sutandi, A.