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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Journal of Science and Science Education (JoSSEd) Journal of Soil Quality and Management
Mahrup Mahrup
University of Mataram
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Neuroscience Physics

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The Effectiveness of Bio Activator of Phosphate Solubilizing Bacteria Consortium on Composting Bag-log Waste Incorporated with Cow Dung Lolita Endang Susilowati; Mahrup Mahrup; Zaenal Arifin; R. Sutriono
Jurnal Penelitian Pendidikan IPA Vol 9 No 2 (2023): February
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i2.2755

Abstract

Bag-log waste is an organic material that is difficult to decompose. This is due to the bag log's high content of lignin compounds. Therefore, to speed up the composting process, it is necessary to include other organic materials and bio activators. This study aims to analyze the effectiveness of the bio-activator consortium of Phosphate Dissolving Bacteria (KBPF) in composting bag-log waste mixed with cow dung. The experiment consisted of 5 treatments with three replications, namely (T1) bag-log waste, (T2) a mixture of bag-log waste and cow manure with a composition of 1:2 (wt/wt), (T3) a mixture of bag-log waste and cow manure with 2:1 ( wt/wt), (T4) a mixture of bag-log waste and cow manure with a composition of 1:2 (wt/wt) plus KBPF (200 ml) with a density of 108 CFU/ml (T5) a mixture of bag-log waste and cow manure with a composition of 2:1 (wt/wt) plus KBPF (200 ml) with a density of 108 CFU/ml. The experiment was created as - Completely Randomized Design (CRD). The experimental results show that bag-log waste cannot be decomposed fastly without cow dung and bio activators. The treatments of T2, T3, T4 and T5 produced compost with quality not significantly different from one another. Under these treatments, the temperature was controlled in the mesophilic stage, and the composting pH was returned to neutral, while the moisture content and C/N ratio decreased to almost half of their original levels at the end of the composting period. It seems that inoculation of KBPF into the mixture of cow dung and bag-log waste has no role in accelerating the composting process. The mix of Bag-log and cow dung, with a minimal proportion of 2:1 without inoculation KBPF, was the recommended combination in composting bag-log in which the final product (compost) could fulfil its pH (neutral), the threshold of temperature and water content.  The C/N ratio of the treatment was close C/N ratio of mature compost, and total N and total P contents were more than the standard of SNI 19-7030-2004.
Root Distribution Pattern of Three Chili Varieties on Vertisol Soil, Central Lombok Zuhdiyah Matienatul Iemaaniah; Mahrup Mahrup; Lolita Endang Susilowati
Journal of Science and Science Education Vol. 4 No. 2 (2023): October
Publisher : Pascasarjana, Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jossed.v4i2.5238

Abstract

Plant roots have an important role in plant growth. Roots function as absorbers of water and other nutrients in the soil which are distributed to other body organs. Distribution patterns, root growth and root range influence plant growth and development. Vertisols are one of the dominant soil orders in southern Lombok, but their physical characteristics are rich in monmorillonite type clay which expands when wet and shrinks when dry. This study aims to analyze the pattern of root distribution through the root growth rate of the three chili varieties and to analyze the tolerance level of the three chili varieties. The field experiment was organized according to a Randomized Completely Block Design with three replications. The varieties of chili plants planted are Kara chilies, Dewata chilies and local chilies. Root growth rate was measured on serial plant samples observed every 20-day interval until day 60, during the growth period. The results obtained showed that the distribution patterns of the three varieties experienced an increasing trend in the rate of root growth, for the kara varieties it reached a figure of 4.65 cm, for local varieties is 5.54 cm; and in the dewata variety it is 2.67 cm. The tolerance level of chili plants to congested conditions was seen from the results of their root growth rates, the three varieties showed that they were Semi Tolerant (ST) to waterlogged environmental conditions on vertisol soils.
Analisis Nisbah Dispersi dan Stabilitas Agregat Tanah pada Penggunaan Lahan SisteM agroforestri di Lahan Miring Khaerul Umam; I Gusti Made Kusnarta; Mahrup Mahrup
Journal of Soil Quality and Management Vol. 1 No. 1 (2022): Journal of Soil Quality and Management
Publisher : Department of Soil Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jsqm.v1i1.18

Abstract

Agroforestry is a form of conservation principle in maintaining land productivity. The various variations that exist in agroforestry will be able to improve soil physical properties, especially the dispersion ratio and stability of soil aggregates, these physical properties will help in resisting the pressure or force of the falling raindrops. This study aimed to determine the effect of land use by agroforestry systems on the dispersion ratio and stability of soil aggregates on sloping land. The research method used is the descriptive method with sampling done diagonally. There were 3 agroforestry systems (clove-based agroforestry, coffee-based agroforestry, and durian-based agroforestry) which were studied in 3 replications with upstream, middle, and downstream positions. This research was conducted in January-June 2020 in Santoni Village, Kayangan District, North Lombok. Two main parameters were tested, namely the dispersion ratio and the stability of soil aggregates. The results showed that the average value of the ratio of land dispersion indicated by coffee-based agroforestry was 79.85% and the highest was clove-based agroforestry of 91.56%, these values ​​belong to the highly dispersed class. Unlike the case with soil aggregate stability, the highest average soil aggregate stability value was shown in coffee-based agroforestry of 109 and the lowest was clove-based agroforestry of 60. The soil aggregate stability value when interpreted as coffee-based agroforestry was classified as very stable clove-based agroforestry is a relatively stable class. Coffee-based agroforestry is best applied on sloping land so that soil erosion and land productivity can be maintained.
Co-Authors I Gusti Made Kusnarta Khaerul Umam Lolita Endang Susilowati R. Sutriono Zaenal Arifin Zuhdiyah Matienatul Iemaaniah