scholarly journals Quality of rubber tree rootstock seedlings grown in protected environments and alternative substrates

2020 ◽  
Vol 42 ◽  
pp. e43469
Author(s):  
Abimael Gomes da Silva ◽  
Edilson Costa ◽  
Talita Cristina Campos Pereira ◽  
Flávio Ferreira da Silva Binotti ◽  
Erivaldo José Scaloppi Junior ◽  
...  
Keyword(s):  
Experimental Design ◽  
Rubber Tree ◽  
Dry Weight ◽  
Fine Sand ◽  
Tree Seedlings ◽  
Quality Indices ◽  
High Quality ◽  
Plant Nursery ◽  
Randomized Experimental Design

This study aimed to evaluate the quality of Hevea brasiliensis seedlings, a GT1 clone, produced in protected environments in a variety of substrates. The treatments consisted of 13 substrates composed of combinations of cattle manure, soil from a ravine, medium vermiculite, superfine vermiculite and washed fine sand and two environments: a greenhouse with 50% shade using aluminized screen and a plant nursery with 50% shade using a Sombrite® screen. There were no replications of the environments; therefore, each one was considered an experiment. For each environment, a completely randomized experimental design with five replications was used to evaluate the substrates. Subsequently, the average squares of the residuals of individual variance analyses of these treatments (substrates) were evaluated, and because they did not exceed an approximate ratio of 7:1, a combined analysis of experiments was performed with Sisvar software. Two hundred eighty days after sowing, the dry weight, plant height, stem diameter, diameter at five centimeters above soil and the seedling quality indices were evaluated. Results indicated that substrates with a low amount of manure and sand and a high amount of vermiculite (S9 and S13) produced rubber tree seedlings of high-quality. The environment with greater radiation availability was better for the development of high-quality rubber tree seedlings.

PENGARUH KONSENTRASI RAGI Saccharomyces cerevisiae DAN LAMA FERMENTASI TERHADAP KUALITAS CUKA TOMI-TOMI (Flacourtia inermis)

2015 ◽  
Vol 4 (2) ◽  
pp. 50-55
Author(s):  
Sandra J Nendissa ◽  
Rachel Breemer ◽  
Nikholaus Melamas
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Experimental Design ◽  
Total Dissolved Solids ◽  
Total Sugar ◽  
Dissolved Solids ◽  
Randomized Experimental Design ◽  
Two Factors ◽  
Four Levels

This objectives of this research were both to study and determine the best level of concentration of yeast Saccharomyces cereviseae and period of fermentation on the quality of tomi-tomi vinegar (Flacourtia inermis). A completely randomized experimental design with two factors of treatment was applied in this research. The first factor was concentration of yeast S. cereviseae having four levels of tretament, i.e.: without the addition of yeast 0.5, 1 and 1.5 g yeast. The second factor was period fermentation with 1, 2, 3, 4, and 5 weeks. The result indicated that the concentration of yeast S. cereviseae 1.5 g and period fermentation 5 week produced a good tomi-tomi vinegar with total acids 51.22%, total dissolved solids 8.35, total sugar 8.07% and pH 5.40.

scholarly journals Formation of ‘Crioula’ guava rootstock under saline water irrigation and nitrogen doses

2016 ◽  
Vol 20 (8) ◽  
pp. 739-745 ◽  
Author(s):  
Leandro de P. Souza ◽  
Reginaldo G. Nobre ◽  
Evandro M. da Silva ◽  
Geovani S. de Lima ◽  
Francisco W. A. Pinheiro ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Salt Stress ◽  
Experimental Design ◽  
Deleterious Effect ◽  
Saline Water ◽  
Dry Weight ◽  
Saline Water Irrigation ◽  
N Dose

ABSTRACT The objective of this research was to evaluate the growth and formation of fresh and dry weight of ‘Crioula’ guava rootstock irrigated with waters of different saline levels and nitrogen (N) doses, in an experiment conducted in plastic tubes under greenhouse conditions. The experimental design was randomized blocks, in a 5 x 4 factorial scheme with four replicates, and the treatments consisted of five levels of water electrical conductivity - ECw (0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1) and four N doses (70, 100, 130 and 160% of the N dose recommended for the cultivation of guava seedlings, cv. ‘Paluma’). The dose referring to 100% corresponds to 773 mg of N dm-3. The highest growth of ‘Crioula’ guava rootstock was obtained with ECw of 0.3 dS m-1 and fertilization of 541.1 mg N dm-3 of soil; increasing N doses did not reduce the deleterious effect of the salt stress on the growth and phytomass formation of ‘Crioula’ guava rootstock; irrigation with water of up to 1.75 dS m-1, in the production of guava rootstocks, promotes acceptable reduction of 10% in growth and quality of the seedlings.

scholarly journals Basic research in the context of the development of medical substances and technologies

2018 ◽  
pp. 84-86
Author(s):  
Л.В. Кузнецова ◽  
Л.Ю. Бахтина ◽  
И.Ю. Малышев
Keyword(s):  
Experimental Design ◽  
Technology Development ◽  
Scientific Research ◽  
Basic Research ◽  
Pharmaceutical Companies ◽  
High Quality ◽  
Pharmacological Research ◽  
Design And Methods

В кратком обзоре обсуждаются задачи фармацевтических компаний, и вопросы о наиболее рациональном соотношении скорости, стоимости и качества процесса разработки лекарств и технологий (DDD). Делается заключение, что экспериментальный дизайн и методы медико-фармакологических исследований должны разрабатываться на основании современных принципов и представлений о содержании этапов DDD, с особым акцентом на высокое качество научных исследований на этапе открытия. This brief review discusses challenges of pharmaceutical companies and issues of the most rational relationship between the speed, cost, and quality of the process for drug and technology development (DTD). It was concluded that the experimental design and methods of medical and pharmacological research should be developed on the basis of modern principles and ideas about the essence of DTD stages with a particular emphasis on the high quality of scientific research at the stage of discovery.

scholarly journals Commercial Greenhouse Growers Can Produce High-quality Bedding Plants in Bioplastic-based Biocontainers

2017 ◽  
Vol 27 (4) ◽  
pp. 472-481 ◽  
Author(s):  
Nicholas J. Flax ◽  
Christopher J. Currey ◽  
James A. Schrader ◽  
David Grewell ◽  
William R. Graves
Keyword(s):  
Production Systems ◽  
Growth Index ◽  
Dry Weight ◽  
High Quality ◽  
Bedding Plants ◽  
Shoot Dry Weight ◽  
Different Types ◽  
Greenhouse Growers ◽  
Container Type

Our objectives were to quantify the growth and quality of herbaceous annuals grown in different types of bioplastic-based biocontainers in commercial greenhouses and quantify producer interest in using these types of biocontainers in their production systems. Seedlings of ‘Serena White’ angelonia (Angelonia angustifolia) and ‘Maverick Red’ zonal geranium (Pelargonium ×hortorum) that had been transplanted into nine different (4.5-inch diameter) container types [eight bioplastic-based biocontainers and a petroleum-based plastic (PP) (control)] were grown at six commercial greenhouses in the upper midwestern United States. Plants were grown alongside other bedding annuals in each commercial greenhouse, and producers employed their standard crop culture practices. Data were collected to characterize growth when most plants were flowering. Questionnaires to quantify producer perceptions and interest in using bioplastic-based biocontainers, interest in different container attributes, and satisfaction were administered at select times during the experiment. Container type interacted with greenhouse to affect angelonia growth index (GI) and shoot dry weight (SDW), as well as shoot, root, and container ratings. Container type or greenhouse affected geranium GI and shoot rating, and their interaction affected SDW, and root and container ratings. These results indicate that commercial producers can grow herbaceous annuals in a range of bioplastic-based biocontainers with few or no changes to their crop culture practices.

Rooting of Herbaceous and Semihardwood Cuttings of Guava cv. Século XXI, under Varying Concentrations of Indolebutyric Acid

2019 ◽  
pp. 1-9
Author(s):  
Jussara Cristina Firmino Da Costa ◽  
Rejane Maria Nunes Mendonça ◽  
Gerciane Cabral Da Silva ◽  
Silvanda de Melo Silva ◽  
Walter Esfrain Pereira ◽  
...  
Keyword(s):  
Experimental Design ◽  
Significant Interaction ◽  
Dry Weight ◽  
Psidium Guajava ◽  
Commercial Production ◽  
Control Treatment ◽  
Distilled Water ◽  
Indolebutyric Acid ◽  
Rooting Of Cuttings

In the commercial production of guava seedlings (Psidium guajava L.) the quality of the cuttings, homogeneity, high percentage of rooting are the factors important to be analyzed. Therefore, as the Século XXI cultivar is recent, it is necessary to do more studies regarding the behavior of this guava to the factors that aid in the rhizogenic process. The objective of this work was to verify the concentrations of indolebutyric acid (IBA) that provide the best rooting of cuttings herbaceous and semihardwood, as well as to verify the best kind of cuttings used for vegetative propagation the guava cuttings cultivar ‘Século XXI’. The experimental design was completely randomized in a 5 x 2 + 1 factorial design, beginning with five concentrations of IBA (0, 1000, 1500, 2000 and 2500 mg L-1), two kinds of cuttings (herbaceous and semihardwood) and one control treatment (immersed in distilled water for 12 hours), with four replications and 10 cuttings per plot. In relation of the variables: the percentage of cuttings live without roots, callus, number of roots and dry weight of shoots did not present significant interaction among treatments, not adjusting to any regression model. Therefore, concluding that the herbaceous cutting is the most indicated for the propagation of guava seedlings of ‘Século XXI’; The concentration of 2500 mg L-1 of IBA promotes a higher percentage of rooted semihardwood cuttings without leaf; The hormone solution diluted with alcohol 50% (v/v) resulted in toxicity for herbaceous and semihardwood cuttings cv. Século XXI.

scholarly journals PENGARUH KONSENTRASI EKSTRAK AIR SEREH WANGI (Cymbopogon nardus L.) TERHADAP KUALITAS TAHU

2016 ◽  
Vol 5 (1) ◽  
pp. 13
Author(s):  
Erynola Moniharapon ◽  
Sandriana J Nendissa ◽  
Agustina Souripet ◽  
Salma Hataul
Keyword(s):  
Experimental Design ◽  
Moisture Content ◽  
Storage Time ◽  
Microbial Growth ◽  
Water Extract ◽  
High Protein ◽  
National Standard ◽  
Cymbopogon Nardus ◽  
Randomized Experimental Design

The objectives of this research were both to know as well as to determine the exact concentration of lemongrass water extract applied during storage on the quality of tofu. A complete randomized experimental design with two factor of treatments was utilized. The first factor was concentration of lemongrass water extract with 3 levels of treatmens, i.e : T1 : 1 kg of lemongrass : 2 L of water, T2 : 1 kg of lemongrass : 3 L of water, T3 : 1 kg of lemongrass : 4 L of water. Whereas the second factor was the storage time, i.e : L0 : 0 day, L1 : 2 day and L3 : 4 day. Variables observed including chemical, and microbial. They consit of protein, moisture, TPC, and Salmonella. Results showed that lemongrass water extract with the concentration of 1 : 4 stored for 4 day had high protein and moisture, content which were 15.4%, and 74.37%, respectively results from microbial test showed that microbial growth was suspressed by the treatments and the content were still in the range set by Indonesian National Standard Agency.

scholarly journals PRODUCTION, DECOMPOSITION AND CHEMICAL CHARACTERISTICS OF BANANA LITTERFALL

2017 ◽  
Vol 30 (1) ◽  
pp. 45-52 ◽  
Author(s):  
CLEITON FERNANDO BARBOSA BRITO ◽  
◽  
VARLEY ANDRADE FONSECA ◽  
FELIZARDA VIANA BEBÉ ◽  
ALESSANDRE GABRIEL OLIVEIRA RAMOS ◽  
...  
Keyword(s):  
Experimental Design ◽  
Half Life ◽  
Chemical Characterization ◽  
Dry Weight ◽  
Fruit Trees ◽  
Chemical Characteristics ◽  
Randomized Experimental Design ◽  
Cycling Of Nutrients ◽  
Medium Texture

ABSTRACT The characterization of litterfall in forest and agroforest systems is important to better understand the cycling of nutrients, however, few studies on litterfall of fruit trees, such as banana, are found. Therefore, the objective of this work was assess the production and decomposition and chemically characterize the litterfall of banana genotypes cropped in a dystrophic typical Red-Yellow Latossol, with weak A horizon, medium texture in a hypo-xerophytic Caatinga in the Southwest of Bahia, Brazil. A completely randomized experimental design was used, with twelve treatments (genotypes) and five replications. The genotypes Preciosa, Pacovan-Ken and Maravilha presented the greatest dry weight. The genotype Fhia18 showed the longest half-life of litterfall decomposition. The banana genotypes Preciosa, Maravilha and Pacovan-Ken produce the greatest contents of litterfall, and their chemical characterization shows the descending order Ca>N>Mg>K>S>P for macronutrients and Fe>Mn>B>Zn>Cu for micronutrients. The banana genotypes PV-79-34, Garantida, Pacovan, JV-42-135, Prata-Anã, Pacovan-Ken, Preciosa and Maravilha present the lowest number of days for decomposition of the litterfall accumulated.

scholarly journals PENGARUH PERBEDAAN METODE PENCAIRAN (THAWING) TERHADAP KUALITAS KIMIA DAGING ABALON (Haliotis asinina) BEKU (Effect of Different Thawing Methods on Chemical Quality of Frozen Abalone (Haliotis asinina))

2019 ◽  
Vol 14 (2) ◽  
pp. 106
Author(s):  
Sri Fatmah Sari
Keyword(s):  
Experimental Design ◽  
Ambient Temperature ◽  
Soluble Protein ◽  
Room Temperature ◽  
Chemical Quality ◽  
Cool Water ◽  
Haliotis Asinina ◽  
Randomized Experimental Design

Penelitian ini bertujuan untuk mengetahui kualitas kimia daging abalon beku H. asinina yang dicairkan dengan beberapa metode.  Penelitian ini menggunakan rancangan acak lengkap, dimana terdapat tiga perlakuan yaitu pencairan dengan melakukan perendaman pada air es (4oC), pencairan dengan melakukan perendaman pada air biasa (28oC), dan pencairan dengan menempatkan pada suhu ruang (30oC). Sebelum dilakukan pencairan sampel yang digunakan dibekukan pada suhu -20oC selama 3x24 jam. Parameter yang dianalisa antara lain, kadar protein, kadar lemak, kadar protein terlarut, kadar air, dan kadar TMA-N. Dari hasil penelitian ini diperoleh perlakuan pencairan dengan melakukan perendaman pada air biasa (28oC) memberikan kualitas kimia yang lebih baik dengan kadar protein 14,08%, lemak 5,43%, protein terlarut 4,09%, kadar TMA-N 6,71 mg/100 g, dan kadar air 78,40%. This research was conducted to investigate the chemical quality of frozen abalone (H. asinina) which thawed using different thawing methods.  A completely randomized experimental design (CRD) was used. It consisted of three treatments of thawing (A; immersion in cool water (4oC), B; immersion in water at ambient temperature (28oC), C; placement at room temperature (30oC)) and done in triplicates. The samples were frozen at a temperature of -20oC for 3x24 hours and they were packaged by air packaging method. The content of protein, fat, soluble protein, water,  and TMA-N were analyzed. The results showed that thawing by immersion in water at ambient temperature (28oC) gave the best chemical quality compared to two others thawing methods in this research.

Pengaruh Konsentrasi Tepung Beras Ketan Terhadap Mutu Dodol Pepaya

2015 ◽  
Vol 4 (1) ◽  
pp. 19-24
Author(s):  
Dorina Kelmaskosu ◽  
Rachel Breemer ◽  
Febby J Polnaya
Keyword(s):  
Chemical Composition ◽  
Experimental Design ◽  
Vitamin C ◽  
Sugar Content ◽  
Rice Flour ◽  
Reducing Sugar ◽  
Randomized Experimental Design ◽  
Waxy Rice Flour ◽  
Waxy Rice

The objective of this research was to determine the best level of concentration of waxy rice flour on the quality of “dodol” papaya. A completely randomized experimental design having of five levels of treatment, namely: control, waxy rice concentration of 0, 10, 20, 30, and 40% were applied in this research. Variables measured on the product including the chemical composition (moisture, ash, vitamin C, and reducing sugar content) and the products were also subjected to organoleptic test for springiness, taste, color, odor, and preference level. The results showed that the different waxy rice flour concentrations had significant effects over variables measured. The waxy rice flour with the concentrations of 10% produce the “dodol” papaya with the best quality.

scholarly journals Associations of Herbicides on the Simultaneous Control of Horseweed and Italian Ryegrass

2018 ◽  
Vol 10 (4) ◽  
pp. 150
Author(s):  
Lucas de Ross Marchioretto ◽  
Bruno Vicente Basso Ferrazzi ◽  
Taísa Dal Magro ◽  
Elaine Damiani Conte
Keyword(s):  
Experimental Design ◽  
Grain Yield ◽  
Dry Weight ◽  
Italian Ryegrass ◽  
Weed Competition ◽  
Control Effect ◽  
Simultaneous Control ◽  
Randomized Experimental Design

Weed competition negatively affects grain yield on wheat and soybean crops. Due to better practicality and timesaving it is usual the association of broadleaf herbicides with graminicides to control monocot and dicot weeds. However, little is known about the deleterious effects of broadleaf herbicides on graminicides. Thus, the objective of this experiment was to evaluate the effects of simple, double and triple association of broadleaf herbicides with graminicides to control of Italian ryegrass and horseweed. The experiment was conducted into greenhouse on completely randomized experimental design with four replications. The treatments consisted of the graminicides clethodim and clodinafop; the broadleaf herbicides 2,4-D, metsulfuron and saflufenacil and non-selective glyphosate, sprayed isolated and in double and triple association to be compared with a control. The variables evaluated were control (%) at 21 and 28 days after treatments (DAT), and dry weight (g) at 28 DAT. The isolated graminicides and the broadleaf herbicides controlled both Italian ryegrass and horseweed respectively. At the double association of broadleaf with graminicides herbicides, 2,4-D antagonized the effect of clodinafop, and glyphosate mixed with clodinafop decreased the control of the graminicide on Italian ryegrass. At the triple herbicide association, when mixed with glyphosate, metsulfuron decreased the control effect of Italian ryegrass by clethodim. The association of broadleaf herbicides with graminicides is effective on the control of monocot and dicot weeds, but it depends on which herbicide used for the combination. When it is evident the antagonism between broadleaf herbicides and graminicides, the detrimental effects go on grass control.

Sign in / Sign up

Export Citation Format

Share Document