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MASALAH DAN PERANAN CO2 PADA PRODUKSI TANAMAN Sutoyo Sutoyo
BUANA SAINS Vol 11, No 1 (2011)
Publisher : Universitas Tribhuwana Tunggadewi

Carbon dioxide is a gas that can be as the greenhouse effect. The greenhouse effect can occur naturally, and can occur due to human activities. The process of the greenhouse effect associated with the recycling flow of solar energy. Increased levels of CO2 in the atmosphere due to human activity, especially transportation and industrial activities so that increasing consumption of fossil fuels, and changes in land use. These activities are difficult to control because of the demands for the fulfillment of a better life. On the other hand mitigation and adaptation efforts to reduce the CO2 impact has not been completely worked well. On evaporation and temperature changes due to the greenhouse effect of CO2 and global warming impacts of drought, rising sea water, and other sector losses, but profitable irrigated agricultural land, such as plant seeds and nuts. The direct effect of increased CO2, positive impact on crop production through increased leaf and canopy photosynthesis, its effect on C4 plants also increase water use efficiency because it reduces the opening of stomata

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

FOTOPERIODE DAN PEMBUNGAAN TANAMAN Sutoyo Sutoyo
BUANA SAINS Vol 11, No 2 (2011)
Publisher : Universitas Tribhuwana Tunggadewi

Photoperiod is the relative ratio between the length of time during the night. The response is the development of the plant against photoperiod called photoperiodism. Vegetative growth that is affected is the formation of bulbs and tubers, branching, leaf shape, the formation of pigment, hair formation, root development, seed dormancy and death. Reproductive growth is influenced by photoperiod is the formation of flowers, fruits and seeds. Flowering in plants is influenced by three factors: photoperiod, phytochrome and the biological rhythms of plants. Knowledge of plant responses to photoperiod can be used (1) selection of the plant before it is introduced into a region need to be tailored to the requirements photoperiod area, (2) artificial irradiation is widely used in horticultural plants to control flowering season and to increase the yield of plants in greenhouses, and (3) artificial light can allow cross it flowerence different plants that season when the natural conditions

PENGGUNAAN ALAR DAN BENZYLADENIN PADA MULTIPLIKASI MERISTEM PISANG Astutik Astutik; Sutoyo Sutoyo; Astri Sumiati
BUANA SAINS Vol 21, No 2 (2021)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v21i2.3202

Alar is a growth regulator that in certain concentrations can inhibit growth, shorten stem segments, strengthen stems to improve the quality of tissue-cultured seedlings. This study aimed to determine the effect of alar and Benzyl Adenin (BA) on banana meristem multiplication. The experiment was conducted in Tissue Culture Laboratory, Faculty of Agriculture, Tribhuwana Tunggadewi University, Malang. The study used a Completely Randomized Design consisting of two factors, namely alar concentration (A0 = 0 mg/l and A1 = 1 mg/l) and BA concentration (B1 = 1 mg/l, B2 = 3 mg/l, B3 = 5 mg/l and B4 = 7 mg/l). Observations were made for 12 weeks of culturing with the observation variables: shoot initiation, number of shoots/explants, number of leaves, and shoot height. The results showed that alar and BA did not significantly affect the development of banana meristems. The use of Alar caused the banana plantlets to be shorter and sturdy, while BA affected the number of shoots produced. BA 1 mg/l was able to increase more shoots.

UPAYA MENINGKATKAN PRODUKSI PADI (Orhyza Sativa L) DENGAN PENGATURAN MODEL TANAM JAJAR LEGOWO Fauzia Hulopi; Sutoyo Sutoyo
BUANA SAINS Vol 10, No 2 (2010)
Publisher : Universitas Tribhuwana Tunggadewi

Efforts to increase rice production, such as setting planting legowo row model. Objective: to study the model settings legowo row planting in rice. The experiment was conducted in paddy fields in the Village District Pulongdowo Tumpang Malang. The research location is situated at an altitude +597 m asl, alluvial soils with a temperature between 22o-30oC and average rainfall is 2113 mm.year-1. The experiment was conducted in April-July 2009. Experiments using a Randomized Complete Block Design Factorial with repeated 5 times. Treatment plant model consists of 5 types, namely 1 = square, 2 = rectangle, 3 = legowo row 2:0, 4 = legowo row 4:0, and 5 = legowo row 8:0. The data obtained were tested LSD 1%. Results showed the treatment of square, rectangle and parallelogram legowo 2:0 high yield crops and productive tillers were not significantly different. Likewise, treatment of legowo row 4:0 and 8:0 high crop yield and productive tillers were not significantly different. Treatment of square, rectangle and parallelogram legowo 2:0 flowering earlier than treatment legowo row 4:0 and 8:0. Treatment of legowo row 4:0 and 8:0 produce dry grain harvests each 9:17 ton.ha-1 and 9:04 ton.ha-1 the highest and different compared to other treatments. Treatment of squares and rectangles to produce dried grain harvest 8:02 ton.ha-1 and 7.95 ton.ha-1 respectively but lower and different from other treatments

KEANEKARAGAMAN HAYATI INDONESIA Suatu Tinjauan : Masalah dan Pemecahannya Sutoyo Sutoyo
BUANA SAINS Vol 10, No 2 (2010)
Publisher : Universitas Tribhuwana Tunggadewi

Biodiversity is a term that covers all forms of life including genes, species of plants, animals, microorganisms and ecosystems and ecological processes. Economic use of biodiversity are still oriented towards large profits without regard to environmental damage. Explore the flora and fauna species can lead to excessive scarcity and extinction of species, so that natural resources can not support human welfare. Indonesia is one country that has the richest tropical forests in the world. Tropical forests as a storehouse of biodiversity is alleged to have shrunk by more than half, even agricultural land has been degraded, both in quality and quantity. In an effort to conserve biodiversity in Indonesia is practically encouraging the process of ecological succession to create a heterogeneous environment that provides opportunities of all species can evolve naturally. These efforts by establishing a nature reserve area, conservation of natural resources include: land, water, plants and animals, conservation germplasm, land and crop rotation, and the socialization role and function of biodiversity. Support of science and technology is needed as a tool in monitoring the sustainable utilization of biological resources, and policies and legal instruments. by way of identification and inventory of biological diversity in the distribution, presence, utilization, and management systems

PENGARUH PUPUK ORGANIK SUPERNASA PADA BERBAGAI DOSIS DAN FREKWENSI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN TOMAT Sutoyo Sutoyo; Fauzia Hulopi
BUANA SAINS Vol 9, No 2 (2009)
Publisher : Universitas Tribhuwana Tunggadewi

Organic manure of pregnant Supernasa of macro, micro nutriens and hormone grow able to be utilized by tomato crop to race growth process and result. Research aimed to study and knowing organic manure dose of Supernasa at various giving frequency on the growth and result crop tomato. The experiment used split plot design with 3 replications. Giving frequency (1, 2, 3 times) as main plots and dose fertilize Supernasa (1, 2, 3 g/l water) as sub plots. Variables observed to highly plants, leaves number, internode number, fruit number/plant and total fruit weight/plant. Result of research indicate that do not there are real interaction between treatment of dose fertilize Supernasa and giving frequincy to all variable observed. But analyse separately from each treatment indicate that treatment of dose fertilize Supernasa 1 g/l water can yield optimum result and growth so also at 1 times giving frequency, this matter is anticipated by manure of Supernasa represent dissolve solid organic manure old ones and availibility of required by nutrien is plant during which old relative

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

STIMULASI PERTUMBUHAN Dendrobium sp MENGGUNAKAN HORMON AUKSIN Naphtalena Acetic Acid (NAA) DAN Indole Butyric Acid (IBA) Astutik Astutik; Astri Sumiati; Sutoyo Sutoyo
BUANA SAINS Vol 21, No 1 (2021)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v21i1.2659

Dendrobium sp is one type of orchid that is in demand by the public because of the various flower shapes and attractive colors but has a long growth period. Therefore, efforts are needed to accelerate the flowering phase of Dendrobium sp. The purpose of this study was to determine the effect of the hormone auxin in accelerating the growth of Dendrobium sp. The research was carried out using a completely randomized design with a 4x2 factorial pattern with 3 replications. The first factor was the treatment of hormone Auxin NAA (A1) and IBA (A2) then the concentration consisted of 4 levels, namely control (K0); 100 mg/l (K1); 200 mg/l (K2), and 300 mg/l (K3). Observations were made every month variables included plant height, number of leaves, length and width of leaves, number of roots, and length of roots. The results showed that the type and concentration of auxin (Naphthalene Acetic Acid) and (Indole Butyric Acid) interacted to support the growth of leaf length, leaf width, and root length of Dendrobium sp orchids. IBA auxin was more effective in promoting growth and rooting of Dendrobium sp than NAA hormone, the optimal concentration of 200 mg/l until the age of 3 months after acclimatization.

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