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All Journal Jurnal Pendidikan Dasar JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Ilmu-Ilmu Pertanian Indonesia Journal of Degraded and Mining Lands Management Jurnal Pembangunan dan Alam Lestari AGRIVITA, Journal of Agricultural Science Fakultas Pertanian AGRITEPA: Jurnal Ilmu dan Teknologi Pertanian JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Ilmiah Pertanian Jurnal AGROSAINS dan TEKNOLOGI AGRISAINTIFIKA Jurnal Ilmu-ilmu Pertanian Jurnal SEPA (Social Economic and Agribusiness Journal) Jurnal Agrotek Tropika JAST : Jurnal Aplikasi Sains dan Teknologi AGROMIX BUANA SAINS JURNAL BUDIDAYA PERTANIAN Jurnal Pengabdian Masyarakat Bumi Raflesia ZIRAA'AH MAJALAH ILMIAH PERTANIAN Jurnal Abdi Insani Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences JAPI: Jurnal Akses Pengabdian Indonesia Valid Jurnal Pengabdian Acta Solum

Widowati

Agrotechnology Study Program, Faculty Of Agriculture, Tribhuwana Tungga Dewi University, Jl. Telaga Warna, Tlogomas Malang 65144

Author-ID : 3043331

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Nursing Physics Public Health Social Sciences Other

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Articles

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UPAYA MENGURANGI PENIPISAN LAPISAN OZON Widowati Widowati; Sutoyo Sutoyo
BUANA SAINS Vol 9, No 2 (2009)
Publisher : Universitas Tribhuwana Tunggadewi

Ozone is one of the constituent gases of the atmosphere. This gas is concentrated in the stratosphere layer functions as a UV filter so as not to cause damage on the surface of the earth. This layer of ozone in most produced by the reaction of oxygen with ultraviolet light. Ozone in the troposphere is the layer of air pollutants and harmful to the respiratory system of human, animal and plant metabolism. The presence of ozone in Earth's atmosphere in low concentrations throughout the year. Decreased concentration or the ozone layer depletion triggered by the compounds of CFCs (Chloro Fluoro Carbon) and ODS (Ozone depleting Subsantance). ODS compounds include nitrogen oxide (N2O) is a byproduct of combustion, methyl bromide, carbon tetrachlorida and methyl chloroform. To determine the thickness of the ozone layer is measured by satellite instruments or Nimbus-7 satellite instruments EP-toms. Total concentration of atmospheric ozone standard can be determined using the unit DU (Dobson Unit). Concentration at a point can also be measured in units of ppb (parts per billion) or in μg.m³. Efforts to reduce ozone layer depletion, among others, regularly measure the thickness of the ozone, suppress the use of CFC compounds that are widely used as refrigrant in freezers, refrigerators, room air conditioning and engine cooling, spray cans for air freshener, perfumes, solvents, foam developers and reduce the use of ODS substances which have been agreed by the international community through the Montreal Protocol, Canada in 1987

IMPLEMENTASI STANDAR NASIONAL INDONESIATEMBAKAUMEMERLUKAN KOMITMEN SEMUA PIHAK Samsuri Tirtosastro; Widowati Widowati
BUANA SAINS Vol 16, No 2 (2016)
Publisher : Universitas Tribhuwana Tunggadewi

IHT, manufacturing industry which use domestic raw material, mix of art (blending) the original tobacco, cloves, sauces and other as ingredients. IHT products (cigarettes, cigars, shag) is a sensory product, based on flavor and aroma subjectively, corresponding in well-ordered quality grade of raw tobacco. More than 25 variety has been prepared by SNI and it will distribute, carried out by some employers when it take purchase tobacco from farmers, then collect using BSN (Institution of National Standardization) format. Implementation of SNI-Tobacco should happen carefully in site of selection, determination varieties, cultivation and processing techniques in the way of trade presentation. Planting in a. One variety, b. technology of recommend packages of consumers while it will implement correctly, and c. mutual commitment between farmers and entrepreneurs of tobacco is the main foundation. The protection or shelter from the government, especially the local government through various regulations, is necessary. It will desire of all parties, specific for employers and tobacco farmers. However, adequate legal protection from SNI-Tobacco particularly in partnerships between farmers and entrepreneurs regulation can not be expected.

SERAPAN NITROGEN, FOSFOR DAN KALIUM BOKASHI TINJA OLEH TANAMAN JAGUNG Widowati Widowati; Sutoyo Sutoyo
BUANA SAINS Vol 7, No 1 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

A glasshouse experiment was conducted to elucidate the effect of feces bokhasi (FB) on uptake of N, P and K by maize grown on an Inceptisol. Nine treatments comprising eight FB rates of 2,5, 5, 7,5, 12,5, 15, 17,5 and, 20 t FB/ha and one control (no added FB) were arranged in a completely randomized design with three replicates. Results of the experiment showed that application of FB up to 10 t/ha increased plant NPK contents. However, applications of more than 10 FB/ha reduced N and K uptake by maize, while P uptake was kept steady. The highest uptake of N, P and K was observed for application of 10 t/ha. i.e. 121.86 , 13.21, and 68.27 mg/kg respectively. Application of various rates of FB did not significantly (P = 5%) affect uptake of N, P and K by plant, but significantly affected K uptake. The average N loss from all treatments ranged from 14.4 to 15,5 mg/kg; the average loss of P from all treatment was about 2,2 mg/kg, and the average loss of K from all treatments ranged from 2,1 to 2,2 mg/kg. The lowest NPK recovery was observed for 20 t FB/ha treatment, i.e. 0,64%, 4,51%, and 18,18%, respectively, whereas the highest NPK recovery was observed for 10 t FB/ha treatment, i.e. 20,43%, 27,16%, and 67,90%, respectively

PENGARUH PENGGUNAAN BIOCHAR DAN PUPUK KALIUM TERHADAP PENCUCIAN DAN SERAPAN KALIUM PADA TANAMAN JAGUNG Widowati Widowati; Asnah Asnah; Sutoyo Sutoyo
BUANA SAINS Vol 12, No 1 (2012): Edisi Khusus
Publisher : Universitas Tribhuwana Tunggadewi

A glasshouse experiment was conducted to study the effect of biochar and potassium fertilizer on potassium leaching and potassium absorption by maize. A completely randomized block design was used with three replications. There were seven treatments consisting of : Ko : control (no biochar and no KCl), K1: 200 kg KCl, K2 (30 t/ha biochar), K3: (30t/ha biochar + 50 kg/ha KCl), K4: (30t/ha biochar+100 kg KCl), K5:(30 t/ha biochar + 150 kg/ha KCl), K6 : (30 t/ha biochar + 200 kg/ha KCl). The results showed that applications of biochar without potassium fertilizer resulted in leaching, availability and total of potassium soil were high and maximum potassium absorption was 33.95 kg/ha. Potassium absorption from biochar applications did not significantly differ if the treatments were combined with biochar and low application of potassium fertilizer. Application of biochar combinaed with potassium fertilizer did not increased leaching and absorption of potassium by maize

DEKOMPOSISI DAN MINERALISASI KADAR N BOKASHI PUPUK KANDANG KOTORAN AYAM Widowati Widowati; I Made Indra Agastya
BUANA SAINS Vol 15, No 2 (2015)
Publisher : Universitas Tribhuwana Tunggadewi

Aims of the study is to evaluate the decomposition and mineralization Nitrogen of bokashi chicken manure made by litter and battery systems. Litter system ussually developed the floor of cage cover by the form of sawdust and rice husk but baterry with cage type of tenuous and perforated floor. Soil incubation of bokashi experiment was conducted in the laboratory and in field the Village Tunggulwulung, Malang. Incubation activities with five sample in the laboratory laid under conditions with and without leached. Observation was made in amount of nitrogen for 2, 4, 6, and 8 weeks. Bokashi manure decomposition of chicken manure was observed in litter bag using method recommended by the Tropical Soil Biology and Fertility. Bags of litter were observed at 1, 2, 4, 8, and 14 weeks. The amount of mineral N in KCl extracts - soil determined using Kjeldahl distillation method. Results of research showed that on leached condition leached mineralization at 2, 4, 8, and 14 weeks bokashi batery lower compared with litter by 0.8, 8, 0.2, 0.6 t N/ha and 0.3, 10, 13, 0.8 t N/ha respectively

STUDI KELAYAKAN FINANSIAL PENGOLAHAN LIMBAH CAIR TAPIOKA SEBAGAI NATA DE CASSAVA Dianawati Dianawati; Widowati Widowati
BUANA SAINS Vol 9, No 1 (2009)
Publisher : Universitas Tribhuwana Tunggadewi

Tapioca industries produced liquid waste containing substantial amount of starch that can be used as a source of carbon. Considering its relatively high carbon content, the liquid waste of tapioca production can be used as a raw material of nata de cassava. This study was aimed to elucidate financial feasibility of nata de cassava production at PT Sumber Timur, Dampit, Malang. The financial feasibility parameters included Break Even Point, Payback Period, RCR, Net BCR, Net Present Value and Internal Rate of Return. The information and assumptions for financial analysis were: liquid waste of tapioca was about 500 l/day, 1 kg cassava pulp produced 8,27 l liquid waste, from 500 kg fermented liquid waste of tapioca, taken 50 kg for starter, rendement = 99,54%, lifetime of the factory was 10 years, Price was increased 4%/ years started from third years, product was sold 100% from 1st - 10th years, production cost was increased 4%/ years started from third years. Results of this study indicated that production capacity for 1 year was 179.160,00 kg, the price was Rp. 1.112,21/ kg, production of nata de cassava from liquid waste of tapioca was financially feasible with NPV (18%)=Rp. 130.082.978,55, BEP = 26.015,29 kg or Rp. 28.934.382,83 or 15%; IRR 37%, Payback Period 4,14 years, Net BCR 1,02 and RCR 1,56

EFISIENSI PEMUPUKAN K DENGAN BOKASHI TINJA PADA CABAI BESAR Widowati Widowati; Astutik Astutik; Elisabeth Nogo
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

Problem of feces closely related to environmental problems. Application of a proper feces handling technology is expected to lessen the negative environmental impact of feces. Objective of the research was to study the ability of feces bokashi in improving availability of soil K and K uptake by big chili. Twelve treatments comprising three levels of feces bokashi and four levels of KCl fertilizer applications were arranged in a factorial block design with there replicates. Results of the study showed that interaction of bokashi feces and KCl fertilizer influenced chili dry weight production. Application of 15 ton feces bokashi /ha combined with 350 ton KCl/ha yielded highest production of dry weight. Application KCl fertilizer significantly affected dry weight and fruit of crop. While application of feces bokashi did not significantly influence K uptake by chili, application of KCl fertilizer significantly influenced K upatek by chili. K fertilization efficiency of 133 % was obtained by application of 15 ton feces bokashi/ha combined with 350 kg KCl/ha

PENGARUH LIMBAH INDUSTRI AGAR-AGAR RUMPUT LAUT TERHADAP SIFAT KIMIA TANAH DAN PERTUMBUHAN TANAMAN JAGUNG PADA TANAH INCEPTISOL KECAMATAN PANDAAN PASURUAN Bambang Siswanto; Widowati Widowati
BUANA SAINS Vol 18, No 1 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

Inceptisol is one type of land order that is widely spread in Indonesia. Its distribution reaches approximately 52.0 million hectares (Kasno, 2009). Inceptisol is widely used as an intensive farm because its management is less precise, then most Inceptisol fertility rate becomes low. This is often shown by soil acidity, organic matter content, and low nitrogen, to improve such properties one of which can use the addition of organic matter. The problem that often arises is the high cost of organic fertilizer. Seaweed industry waste is a source of organic material that has not been widely utilized. Of the total raw materials processed, there is 65 to 70 percent of industrial products produced by the seaweed industry waste every day (Mandela. 2010). Usually these side products are only left to accumulate at the landfill site. Seaweed industry waste has the potential to be used as a source of soil organic matter because the organic material content of products of seaweed industry reaches 6.4% (Afif, 2011). The addition of nutrients to the application of inorganic materials is considered as an alternative step in increasing crop productivity. Based on the description above, it is necessary to conduct research to utilize the waste of seaweed industry, to get high corn production in Inceptisol. The objectives of this research are: (1) To know the effect of seaweed industrial solid waste on soil chemical properties Inceptisol and (2) growth of maize. The research was conducted in the greenhouse, while for the analysis of soil samples and the waste of seaweed industry was conducted in soil chemistry and soil physics laboratory, Department of Soil Science, Faculty of Agriculture, Brawijaya Universities. The study was conducted from May to August 2016. The soil samples used in this study were taken from Kemirisewu village, Pandaan sub-district, Pasuruan district at a depth of 0-20 cm. The waste of seaweed gel plant is obtained from PT. HAKIKI DONARTA, Pandaan Sub-district, Pasuruan Regency. The basic fertilizers used are Urea, KCl, and TSP. Maize seeds used as indicator plants are hybrid varieties of BISI-2 maize. This study used Completely Randomized Design (RAL) with 4 (four) treatments and 3 (three) replications. Addition of solid waste of seaweed with the dosage of 15 Mg/ha, increased of soil acidity and C-Organic content, besides also can increase Phosphorus and Potassium content available, Nitrogen, Phosphorus, and Potassium plant uptake, and the best growth of maize.

PENGARUH PEMBERIAN PUPUK PETROGANIK DAN KOMPOS PADA VERTISOL BEKAS GALIAN PEMBUATAN BATU BATA TERHADAP SERAPAN N SERTA PERTUMBUHAN TANAMAN JAGUNG Bambang Siswanto; Widowati Widowati
BUANA SAINS Vol 17, No 1 (2017)
Publisher : Universitas Tribhuwana Tunggadewi

The low level of farms income from agricultural sector mainly happens in dry season had to inappropriate soil cultivation. The utilization of soil for brick ste manufacturing is one of this case. The excavation process occurs on top soil inflicting degradation of soil fertility. Soil in the impact of this condition has a problem in providing chemical element for the agriculture, especially the lack of N. One of alternative attempts to increase the soil fertility in providing N on formerly brick ste excavation-soil is by supplying Petroganik fertilizer and compost. Petroganik and compost is an organic fertilizer containing N, P, K, the other nutrient, similar to the other organic fertilizers. The aims of the research are to determine the effect Petroganik fertilizer and compost application on N uptake and toward the growth of corn on former brick ste excavation-soil, and to know the chosen dosage which is resulting in growth and N uptake of corn. Research used is Random Block Design with 9 treatment and 3 replication. Dosage of treatment T0 : Control, Petroganik (14, 17, 20, 23) t/ha and compost (14, 17, 20, 23) t/ha. Indicator plant was used Hybrid Corn BISI 2. The result of experiment showed that : 1. Significant effect in increasing uptake of N the corn. The treatment of Petroganik 17 t/ha (P2) increasing 145 % and compost 14 t/ha (P2) increasing 93.8 %, 2. Insignificant effect on plant growth (height, number of leaf) However, it gives significant effect on dry weight of the corn biomass. The treatment Petroganik 17 t/ha (P2), increases 101.45 %, 3. The application of Petroganik fertilizer is more effective in increasing the growth and N uptake of corn than that of compost since the application of 17 t/ha of Petroganik has already increased the N uptake and growth of corn .

Co-Authors A Astutik Aceng, Kasianus Agabus Ary Koreh Agnes Quartina Pudjiastuti Aldon Sinaga Alicia Nursia Aljun, Yohanes Amrul, Rusli Ana Arifatus Sa'diyah Ana Arifatus Saâ€™diyah Anci, Ledisa Ariffianti, Indah Arson, Prudensius Asnah Asnah Asnah Asnah Astri Sumiati Astutik Astutik Astutik Astutik Bambang Siswanto Bambang Siswanto Bayu, Muhammad Bili Piduwatu, Bili Cahya, Utik Tri Wulan David Kaluge Dianawati Dianawati Dion, Didi Elisabeth Nogo Elvina Setiawati Fatah, Hibatullah Amtsalul Frengky Umbu Kolambani Frengky Umbu Kolambani Gerardus Jova Gonsales, Pedro Hariadi Darmawan, Hariadi Hengki Samudra Hesti Triana Soelistiari Hidayati Karamina Himawan Himawan I Made Indra Agastya Ilastika, Friska Jamhari Jamhari Janur, Maria Yasinta Jimi, Nobertus Julianto, Reza Prakoso Dwi Junaitri, Marius Khaerudin, Dian Noorvy Kornelis, Veri Laba, Jefri Wada Linda Prasetyorini M Marwoto Manukoto, Delivio Manupadaka, Sairo Maria Getrudis Yati Marian, piter Nababan, Candro Borsak Nanga, Agustinus Dama Ndua Nusa, Karolus Pemilu Nikmatul Khoiriyah Oswaldus Oswaldus Ottovince, Herlina Ina Presti Ameliawati, Presti Puspitasari, Kristanti Ambar Retno Ayu Dewi Novitawati Retno Wilujeng Reza Prokoso Dwi Julianto Ricky Indri Hapsari Sadiyah, Ana Arifatus Samsuri Tirtosastro Samsuri Tirtosastro Samsuriadi, Samsuriadi Sholehuddin, Nurul Sobang, Adrianus Janga Sombo, Yusvina Sumiati, Astri Susanto Susanto Susilo Ribut Anggarbeni, Susilo Ribut Sutoyo Sutoyo Sutoyo Sutoyo Syaputra, Roni Tandu, Antonius Theresia Sumei, Theresia Titis Adisarwanto, Titis Tri Mudjoko W H Utomo Wahyu Fikrinda Wahyu Fikrinda Wahyu Fikrinda Wakhid Yandaru, Angger Pedhut Yohanes Manggas

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