Papers by lolita susilowati
Deleted Journal, Jan 31, 2024
The objective of this research was to assess the efficacy of three different decomposers in produ... more The objective of this research was to assess the efficacy of three different decomposers in producing compost of high quality that meets the compost maturity standards (SNI 19-7030-2004). The experimental study was conducted with three treatments, each replicated five times, resulting in a total of fifteen composting holes. The research was conducted in South Batu Kuta Village, Narmada District, West Lombok Regency, from October to December 2019. The treatments included D1 (EM4 decomposer), D2 (Promi decomposer), and D3 (Phosphate Solubilizing Bacteria (PSB) decomposer). Various parameters, such as color, smell, temperature, pH, C-Organic, Total N, and C:N ratio, were assessed. The findings demonstrated that all three decomposers effectively decomposed the compost, yielding a high-quality product suitable for various plant applications. The compost produced by EM4, Promi, and PSB decomposers exhibited characteristics such as a blackish color, soil-like smell, a temperature ranging from 29.2°C to 29.8°C, a pH ranging from 6.83 to 6.87, organic carbon content ranging from 12.87% to 14.73%, total nitrogen content ranging from 0.83% to 0.87%, and a C/N ratio ranging from 14.35% to 14.60%. These results align with the compost maturity standards specified in SNI 19-7030-2004.
Abdimas Siliwangi, Mar 14, 2024
Penelitian ini bertujuan untuk mengetahui potensi biochar terhadap mobilitas merkuri (Hg) pada ta... more Penelitian ini bertujuan untuk mengetahui potensi biochar terhadap mobilitas merkuri (Hg) pada tanah tercemar yang ditanami sawi (Brasicca juncea) serta respon pertumbuhan sawi (Brasicca juncea) dalam menyerap merkuri (Hg). Penelitian ini menggunakan metode eksperimen, yaitu metode yang bertujuan untuk mengetahui pengaruh pemberian biochar pada berbagai dosis terhadap mobilitas merkuri dengan menggunakan indikator tanaman sawi hijau (Brasicca juncea L) pada tanah tercemar merkuri (Hg). Percobaan ini dilaksanakan pada bulan Maret sampai dengan Juni
IOP Conference Series: Earth and Environmental Science, Sep 30, 2023
IOP Conference Series: Earth and Environmental Science, Sep 30, 2023
Jurnal Biologi Tropis, Nov 6, 2023
Jatropha Curcas oil is a non-edible oil which is used for Jatropha biodiesel (JBD) production. Ja... more Jatropha Curcas oil is a non-edible oil which is used for Jatropha biodiesel (JBD) production. Jatropha biodiesel is produced using transesterification technique and it is used as an alternative fuel in CI diesel engine without any hardware modification. Jatropha biodiesel is used in CI diesel engine with various volumetric concentrations (blends) such as JBD5, JBD15, JBD25, JBD35 and JBD45. The combustion parameters such as in-cylinder pressure, rate of pressure rise, net heat release, cumulative heat release, mass fraction burned are analyzed and compared for all blends combustion data with mineral diesel fuel (D100).
IOP, 2021
The availability and the residue of phosphate in soil are influenced by the addition of phosphoru... more The availability and the residue of phosphate in soil are influenced by the addition of phosphorus (P) fertilizer and its uptake by plant. The addition of P fertilizer also commonly affects the plant yield. This research is aimed to assess the effect of chemical fertilizer and bioorganic-phosphate on the P-available and P-residue in soil, P-uptake by plant, and the yield of soybean. Field experiment was carried out in a Vertisol of South Lombok, Indonesia, which consisted of four treatments arranged in a randomized complete block design and replicated five times. The four treatments were P0 = control, P1 = bioorganic-phosphate + 125 kg PHONSKA ha-1 , P2 = bioorganic-phosphate + 187.5 kg PHONSKA ha-1 , and P3 = 250 kg PHONSKA ha-1. The P2 treatment resulted the highest P-available and P-residue in soil, the highest P-uptake by plant, and the highest yield of soybean. Meanwhile, the effect P1 and P3 on all parameters were not significantly different. There is a strong positive correlation (r = 0.97) between P-uptake by plant and the yield of soybean. As the P2 treatment produced the highest yield of soybean, and the yield at the P1 is relatively the same as P3, this indicates that the application of bioorganicphosphate can reduce the dose of chemical fertilizer by up to 50%.
Lumbung Inovasi: Jurnal Pengabdian kepada Masyarakat
Pengabdian kepada masyarakat ini bertujuan untuk mendampingi dan memberikan pengalaman kepada mas... more Pengabdian kepada masyarakat ini bertujuan untuk mendampingi dan memberikan pengalaman kepada masyarakat tani di daerah Montong Tekot, Desa Sukadana dalam membudidayakan tanaman anggur di lahan kering yang tak produktif. Rangkaian kegiatan pendampingan ini meliputi koordinasi dengan mitra, persiapan dan pengolahan media tanam, persiapan bibit, penanaman, pemupukan, perawatan, dan evaluasi kegiatan. Metode yang digunakan adalah Participatory Rural Appraisal (PRA) yang melibatkan 10 anggota kelompok tani “Patuh Bersama”. Sebanyak 9 dari 10 sangat antusias dan berperan aktif dalam mengikuti kegiatan pendampingan dan menerima kunjungan dari tim pengabdian masyarakat Universitas Mataram. Melalui observasi dan evaluasi, sekitar 90% peserta tergolong puas dengan pengalaman pendampingan budidaya tanaman anggur yang diberikan. Sangat penting pula diketahui bahwa pertumbuhan vegetatif tanaman anggur tumbuh dengan baik yang ditandai dengan bertambah tingginya tanaman dengan rata-rata lebih dar...
IOP conference series, Jul 1, 2021
Vertisol of South Lombok is the center of soybean production on Lombok Island which is productive... more Vertisol of South Lombok is the center of soybean production on Lombok Island which is productively vulnerable due to climate change. Erratic pattern of rainfall may threat the production of soybean in this dry climatic area which may be exaggerated by climate change. Therefore. it is needed efforts to maintain or even to increase the yield of soybean through adding both bioorganic and inorganic fertilizers. This study aimed to assess the effect of combination of bioorganic and inorganic fertilizer on enhancing the fertility of soil and the yield of soybean. This experiment used a randomized block design (RBD) with 4 treatments and 5 replications. The treatments were 50% of the recommended dosage of inorganic fertilizers plus 10 g per plant of bioorganic-phosphate (P1), 75% of the recommended dosage of inorganic fertilizers plus 10 g per plant of bioorganic-phosphate (P2), 100% of recommended dosage of inorganic fertilizers (P3), and control. Parameters observed consisted of soil pH, available-P. Exchangeable-K, organic-C, cation exchange capacity (CEC), base saturation (BS), and the yield of soybean. The results showed that the treatment of 75% of the recommended dosage of inorganic fertilizers plus 10 g per plant of bioorganic-phosphate (P2) increased the soil P-available from 10.71 on the control to 22.59 ppm on the P2 treatment, and resulted from the highest yield of soybean. Thus, this treatment is recommended if the combination of the fertilizers to be applied in the Vertisol South Lombok for adapting to climate change.
Journal of physics, Dec 1, 2019
The drought tolerant phosphate solubilizing bacteria is needed to dissolve inorganic phosphate (P... more The drought tolerant phosphate solubilizing bacteria is needed to dissolve inorganic phosphate (P) which is usually low in the availability at dry land. This study is aimed to obtain a combination of drought tolerant phosphate solubilizing bacteria which has high potential in dissolving P-inorganic. An experimental study which has 4 treatments of bacterial combinations has been conducted in a laboratory. The first treatment was the combination between Pseudomonas azotoformans (A) and Acinetobacter baumannii (B). The second treatment was the combination of A and Bacillus paramycoides (C). The third treatment was B and C, then the fourth treatment was A, B, and C. The potential of the bacterial combination in dissolving Pinorganic was measured qualitatively using phosphate solubilizing index (PSI) on pikovskaya solid medium. While, the potential of the bacterial combination in dissolving P-inorganic was measured quantitatively by measuring dissolved P using the ascorbic acid method in pikovskaya liquid medium containing 0.5% Ca3(PO4)2. The results showed that the combination of those three bacteria (A B and C) has the best potential to dissolve P-inorganic compared to other combinations. In addition, the three bacteria combination also resulted in the highest dissolved P with 0.29% potential dissolution of the total Ca3(PO4)2 contained in the pikovskaya liquid medium, followed by combination of B and C (0.19%), and A and C (0.18%), respectively. Thus, before the combination of these three bacteria is applied in soil, it is needed further experiment of the potential of the bacteria in dissolving soil P-inorganic.
Journal of Degraded and Mining Lands Management, Feb 17, 2014
Phosphorus solubilizing bacteria (PSB) enhances P availability in soils through dissolving inorga... more Phosphorus solubilizing bacteria (PSB) enhances P availability in soils through dissolving inorganic P pools. The characteristics of PSB and the potential of three Pb tolerant phosphate solubilizing rhizobacteria, i.e. Pseudomonassp, Bacillus sp., and Actinomycites sp. were evaluated. PSB were isolated from soil samples contaminated with 300 and 500 mg Pb/kg after incubation for 30 days. Phosphate solubilizing bacteria were screened on for phosphate solubilisation ability in Pikovskaya agar medium (PA). In addition, two of the three indentified PSB strains (Pseudomonas sp. and Bacillus sp.) were characterized for their ability to solubilize tricalcium phosphate in Pikoskaya broth (PB) and also were examined their growth during culture medium incubation. The isolates exhibited different phosphate solubilization index, ranging from 1.87 to 2.98. Pseudomonas sp. had the highest ability to solubilize tricalcium phosphate: 9.
IOP conference series, May 19, 2020
The aim of this study is to investigate the soil organic matter (SOM) status in various land uses... more The aim of this study is to investigate the soil organic matter (SOM) status in various land uses and management in Kayangan Sub-District, North Lombok, and its accuracy measurement using near infrared spectroscopy (NIRS). A total of 100 soil samples (0-10 cm depth) were collected from several land uses and management (rain-fed areas, irrigated areas, areas planted 1-3 times with seasonal crops, areas planted with 1-3 perennial plants) in the study area, which were dried, ground and sieved, then analyzed using Walkley and Black method and scanned using near infrared spectroscopy (NIRS). Partial least square regression (PLSR) was used to create SOM prediction models. The results showed that the SOM content varied from very low to moderate with most of them were low. The content of SOM was significantly higher in the irrigated areas compared to that of in the rain-fed areas, and also higher in the areas planted with seasonal crops 3 times a year compared to the areas planted 1-2 times a year. SOM content was higher in areas planted with 2-3 types of perennial plants, compared to with 1 type of perennial plant. NIRS technology was moderately accurate in measuring SOM, which can be used to monitor spatially changes in SOM.
Jurnal SIAR ILMUWAN TANI
Kegiatan pengabdian budidaya tanaman okra bertujuan memberdayakan masyarakat di KEK Mandalika aga... more Kegiatan pengabdian budidaya tanaman okra bertujuan memberdayakan masyarakat di KEK Mandalika agar dapat mandiri dalam ketahanan pangan lokal dengan memanfaatkan potensi lahan pertanian yang tergolong sangat luas. Budidaya tanaman okra pada berbagai jenis tanah memiliki karakteristik yakni drainase yang baik, jenis tanah berlempung pasir, temperatur udara mulai dari 27-30 °C sehingga pertumbuhan dan perkembangan tanaman cepat tumbuh. Kegiatan budidaya tanaman okra pada tanah vertisol menggunakan pengairan dengan sistem irigasi tetes (Drip Irrigation) karena tanah vertisol adalah tanah banyak mengandung banyak mineral lempung yang baik untuk pertanian. Sistem irigasi tetes (Drip Irrigation) adalah teknik pengairan dengan cara pemberian air melalui pipa paralon secara ditempatkan di samping tanaman. Keunggulan dari sistem irigasi tetes ini adalah pada saat pengairan cukup diaplikasikan di bagian area akar yang basah untuk pemenuhan kebutuhan air pada setiap tanaman, akan tetapi air ya...
Prosiding SAINTEK, Feb 9, 2021
Russian Journal of Agricultural and Socio-Economic Sciences, 2021
Peanut is one of the potential legumes used in intercropping systems. Peanut cultivation in inter... more Peanut is one of the potential legumes used in intercropping systems. Peanut cultivation in intercropping is often depressed due to competition with other plants which reduces yield; therefore intercropping of peanuts with sorghum must be carried out properly. One way to minimize competition in the intercropping system is arranging planting time. Aim of this study is to determine growth and yield of peanuts at different planting times in the intercropping with sorghum at many planting models in dry land. The experiment has been carried out at the Pringgabaya Agricultural Technology Research and Assessment Installation (IP2TP) East Lombok, September 2020-January 2021. Split Plot design was used with three peanut planting times (as the main plot) which are 14 days before sorghum, same planting time with sorghum, and 14 days after sorghum. Sorghum planting model (as subplot): single row (70 cm x 20 cm spacing) 1 plant per clump, double row 20 cm x (50 cm-100 cm) spacing 1 plant per clump, double row spacing 40 cm x (40 cm-100 cm) 2 plants per clump. The highest peanut yield 1.69 t/ha, obtained when peanuts planted 14 days before sorghum with a double row sorghum planting model with a spacing of 40 cm x (40 cm-100 cm) 2 plants per clump (1.69 t/ha). This can be recommended for peanut-sorghum intercropping systems in. dry land.
IOP Conference Series: Earth and Environmental Science, 2021
The increase of atmospheric CO2 concentration from soil organic matter (SOM) decomposition may co... more The increase of atmospheric CO2 concentration from soil organic matter (SOM) decomposition may contribute to the global warming and climate change. So, sequestering this greenhouse gas into SOM may be used to mitigate climate change. However, tedious procedures in measuring and mapping SOM need to be replaced with a method which works based on the reliability of calibration model developed. This research aimed to test the reliability of the calibration model that was built from a separate soil sample group to be used to measure and map SOM on other validation soil sample group, in the mostly dry climatic area of Kayangan Sub-district, North Lombok Indonesia. For this purpose, 300 soil samples were collected from the area using grid method, which were then dried, ground, sieved, analysed for SOM content using the Walkley and Black method, and scanned using Near Infrared Spectroscopy. The model built using calibration sample group was able to reliably measure and map the SOM content of the spectral data collected from the validation sample set. This is shown by the coefficient of determination (R 2 V= 0.79), root mean square error (RMSEV = 0.246%) and the ratio prediction to deviation (RPDV = 2.09). SOM maps generated from both laboratory and near infrared method can show very low, low and medium SOM content. These maps can be further used as a reference for applying organic fertilizers, avoiding excessive use of fertilizers, and monitoring soil carbon sequestration in mitigating climate change.
IOP conference series, Mar 1, 2021
The availability and the residue of phosphate in soil are influenced by the addition of phosphoru... more The availability and the residue of phosphate in soil are influenced by the addition of phosphorus (P) fertilizer and its uptake by plant. The addition of P fertilizer also commonly affects the plant yield. This research is aimed to assess the effect of chemical fertilizer and bioorganic-phosphate on the P-available and P-residue in soil, P-uptake by plant, and the yield of soybean. Field experiment was carried out in a Vertisol of South Lombok, Indonesia, which consisted of four treatments arranged in a randomized complete block design and replicated five times. The four treatments were P0 = control, P1 = bioorganic-phosphate + 125 kg PHONSKA ha−1, P2 = bioorganic-phosphate + 187.5 kg PHONSKA ha−1, and P3 = 250 kg PHONSKA ha−1. The P2 treatment resulted the highest P-available and P-residue in soil, the highest P-uptake by plant, and the highest yield of soybean. Meanwhile, the effect P1 and P3 on all parameters were not significantly different. There is a strong positive correlation (r = 0.97) between P-uptake by plant and the yield of soybean. As the P2 treatment produced the highest yield of soybean, and the yield at the P1 is relatively the same as P3, this indicates that the application of bioorganic-phosphate can reduce the dose of chemical fertilizer by up to 50%.
Jurnal Abdimas Sangkabira
Dusun Ngolang, Desa Kuta, Mandalika merupakan kawasan yang digunakan untuk bermukim sementara war... more Dusun Ngolang, Desa Kuta, Mandalika merupakan kawasan yang digunakan untuk bermukim sementara warga relokasi Ex-Sirkuit Mandalika. Sebelum menempati hunian yang telah dipersiapkan oleh PT Pengembang Pariwisata Nasional Indonesia atau Tourism Development Corporation (ITDC), masyarakat terdampak pembangunan Sirkuit Mandalika berkegiatan di Dusun Ngolang dengan beberapa keterbatasan, salah satunya tidak adanya pekerjaan khususnya bagi para ibu-ibu rumah tangga. Sebagian besar dari mereka menggantungkan hidupnya dari bantuan-bantuan yang datang, baik dari Pemerintah Daerah, Pemerintah Pusat dan swasta lainnya. Tujuan diadakannya pendampingan pengolahan pangan untuk masyarakat (khususnya ibu-ibu rumah tangga) antara lain: 1) menciptakan kompetensi dibidang pengolahan pangan; 2) melakukan diversifikasi produk dari hasil-hasil pertanian yang dikembangkan di desa-desa penyangga Mandalika; 3) meningkatkan peluang pengembangan produk untuk mendukung pariwisata di Mandalika 4) Berkontribusi te...
Jurnal Pengabdian Magister Pendidikan IPA
Permintaan jamur tiram dari waktu ke waktu terus meningkat, akibatnya petani jamur terus berusaha... more Permintaan jamur tiram dari waktu ke waktu terus meningkat, akibatnya petani jamur terus berusaha meningkatkan capaian produksi jamur untuk memenuhi kebutuhan. Dibalik keberhasilan usahanya, petani jamur ini berpotensi menghadirkan masalah lingkungan yang bersumber dari timbunan baglog media tanam jamur yang tidak dikelola secara tepat guna. Sementara, limbah baglog tersebut masih menyimpan potensi untuk diolah menjadi produk yang bermanfaat di bidang usaha budidaya tanaman, yaitu sebagai bahan baku pupuk organik. Karena itu, suatu keniscayaan untuk dilakukan alih teknologi pengolahan baglog menjadi pupuk organik berkualitas yang diperkaya dengan konsorsium bakteri pelarut fosfat kepada petani muda milenial pembudidaya komoditas sayuran. Kegiatan alih teknologi ini diawali dengan pengayaan pengetahuan tentang mengolah baglog menjadi produk pupuk organik yang berkualitas. Kemudian dilanjutkan dengan praktek pembuatan pupuk organik diperkaya konsorsium bakteri pelarut fosfat melalui...
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Papers by lolita susilowati