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| Registros recuperados: 1.068 | |
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| Nobre, Danubia Aparecida Costa; Silva, Rodrigo Rocha; Guimarães Nasser, Vinicius; Silva, Geraldo Humberto; Aquino, Leonardo Angelo; Macedo, Willian. |
| Poucos estudos apresentam interações entre a fisiologia das plantas e sua posterior composição química, quando cultivadas em diferentes arranjos. Esta pesquisa buscou compreender a relação entre o espaço de cultivo da soja e sua influência sobre a qualidade da semente. Foram estudadas duas cultivares de soja (Tec 7849 Ipro e Monsoy 6972 Ipro) em quatro arranjos espaciais distintos (50,0 x 7,1; 40,0 x 8,9; 30,0 x 11,9 e 18,9 x 18,9 ou 16,2 x 16,2 cm, respectivamente). Durante os estádios fenológicos V4 e R2, foram analisadas trocas gasosas e na colheita, foram constituídos 2 grupos, um de sementes frescas e outro de sementes envelhecidas, para ambos os grupos se analisaram: teste de germinação, vigor, índice de velocidade de germinação, massa fresca das... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gas exchange; Germination; Lipids; Gas chromatography; Trocas gasosas; Germinação; Lipídeos; Cromatografia gasosa. |
| Ano: 2023 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6850 |
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| Avozani, Aveline; Tumelero, Andréia Iraci; Baldiga Tonin , Rosane; Denardin, Norimar; Gomes Silva, Abimael; Garcés-Fiallos, Felipe Rafael. |
| O controle químico é o método mais usado no manejo de doenças em grandes culturas como soja e trigo. No entanto, a alguns anos o controle biológico tem ganhado destaque. Assim, avaliou-se o antagonismo das bactérias Pseudomonas fluorencens, Pantoea aglomerans e Bacillus sp. sobre os fitopatógenos Corynespora cassiicola e Drechslera tritici-repentis, isolados previamente de folhas de soja e trigo, respectivamente. O experimento foi realizado em condições controladas, no Laboratório de Fitobacteriologia da Faculdade de Agronomia e Medicina Veterinária (FAMV), Universidade de Passo Fundo (UPF), Rio Grande do Sul, Brasil. Os tratamentos foram: T1: P. fluorencens + patógeno; T2: P. aglomerans + patógeno; T3: Bacillus spp. + patógeno e T4: patógeno (controle).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pseudomonas fluorencens; Pantoea aglomerans; Bacillus sp.; Mycelial growth inhibition; Pseudomonas fluorencens; Pantoea aglomerans; Bacillus sp.; Inibição do crescimento micelial. |
| Ano: 2023 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/7111 |
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| Dalpubel Mattiuzzi, Mateus; Paiola Albrecht, Alfredo Junior; Baccin, Luisa Carolina; Moreira Silva, André Felipe; Paiola Albrecht, Leandro; Larini, Willian Felipe. |
| A linhaça é uma oleaginosa amplamente utilizada na alimentação humana e animal, como cultura de cobertura em agroecossistemas e para produção de fibras. Para facilitar o manejo de plantas daninhas na cultura, este trabalho teve como objetivo avaliar potenciais herbicidas seletivos para o cultivo de linhaça aplicados em pré-plantio incorporado (PPI), pré-emergência (PRE), pós-emergência inicial (POS), pós-emergência tardia (POS tardio) uma vez que ainda não existem herbicidas registrados para uso em linhaça no Brasil. Portanto, quatro experimentos foram conduzidos em delineamento inteiramente casualizado com quatro repetições, e cinco (exp. 1), 21 (exp. 2), 26 (exp. 3) e quatro (exp. 4) tratamentos. Foram avaliadas a injúria na cultura e a matéria fresca e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Injury; Bentazon; Protoporphyrinogen oxidase (PPO) inhibitors; Acetolactate synthase (ALS) inhibitors; Acetyl-CoA carboxylase (ACCase) inhibitors; Injúria; Bentazon; Inibidores da protoporfirinogênio oxidase (PPO); Inibidores da acetolactato sintase (ALS); Inibidores da acetil-CoA carboxilase (ACCase). |
| Ano: 2023 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/7058 |
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| Emesu, Pius; Lentshaletse, Tlholego; Derrick, Robin Vuuren; Gabolekane, Mercy. |
| Morula nuts were characterized for several physical and mechanical properties relevant to food process engineering. Mean moisture content of the nuts which had been naturally dried under the sun was 7.65% (w.b.). Mean nut length, width and thickness were, respectively, 25.64, 21.99 and 18.03 mm, while the derived geometric mean and equivalent diameters were 21.62 and 21.72 mm, respectively. Mean surface and projected areas were 1 475.74 and 445.02 mm2, respectively, while mean nut volume was 5 371.90 mm3. Mean apparent density of the nuts was 811.30 kg/m3 while bulk density and bulk porosity were determined as 476.43 kg/m3 and 41.28%, respectively. Morula nuts are generally spherical, with mean sphericity of 84.40%, and aspect and flakiness ratios of 0.86,... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8383 |
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| Chakraborty, Sourav; Manuj K Hazarika. |
| A sorption isotherm algorithm based on artificial neural network (ANN) was developed for the prediction of equilibrium moisture content (EMC) of paddy under low temperature conditions (20 to 400C). ANN architecture was modeled by considering water activity (aw) and temperature (T) as input and EMC as output neurons. A sorption isotherm experiment under low temperature conditions viz. 20, 25, 30 and 35oC was conducted for providing training, testing and validation data of ANN. 2-7-1 was selected as the best ANN architecture on the basis of which sorption isotherm algorithm was developed in MATLAB R2015a. Mathematical modeling was also performed for the analysis of sorption isotherm behavior. Among four models as applied for the analysis, modified... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8357 |
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| Nahar, Najmun; Khan, Sayful Kabir; Owino, Alex Otieno; Hossain, Zakaria. |
| Based on recent research, rice husk ash (RHA) is used as a secondary cementitious material for soil stabilization. The present study attempted to investigate the shear behavior of soil mixtures with RHA and a nominal cement dose. Triaxial compression and scanning electron microscopy tests were performed on specimens after moisture-curing for 1-day. The test results showed that all the soil-RHA-cement samples reached the maximum deviatoric stress value at 2-3% axial strain, compared to 2.5-5.5% for the untreated soil. Soil with 5% RHA and 0.6% cement admixture achieved the highest strength (677.5kPa) under the confining pressure 150kPa and the best microstructural improvement. It can be recommended as the optimum amount for practical purposes during... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8489 |
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| Babalola, Ayoola Abiola; Olumomi, Elizabeth Ayobami; Adepoju, Victor Oluwayomi; Tiamiyu , Saheed Olaniyi; Nwaokocha, Collins Neku; Lawal , Nurudeen Samuel; Adetifa, Babatunde Olusola. |
| Cowpea dehulling is an important operation in the processing of cowpea. Traditional cowpea dehulling methods recognize the soaking of cowpea in water for a significant amount of time before manual abrasion is carried out either through the use of mortar and pestle, hands, or legs. Existing mechanical alternatives also require prolonged soaking of cowpea before dehulling occurs in addition to being expensive and beyond the reach of many rural populations. This study designed and fabricated a dry cowpea dehulling machine using engineering principles and with locally available materials. Components of the machine include the hopper, power transmission drive, dehulling chamber, polishing chamber, sieves, discharge chute, and agitator. Dry cowpea varieties of... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8399 |
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| Witoyo, Jatmiko Eko; Argo, Bambang Dwi; Yuwono, Sudarminto Setyo; WIDJANARKO, SIMON BAMBANG. |
| The purpose of this study was to determine the effects of feed rate and inlet air velocity on the physicochemical properties of porang flour by using Central Composite Design Method of Response Surface Methodology (CCD –RSM), in order to ascertain whether the CCD-RSM as a predictive approach is accurate in optimizing porang flour production. Advanced instruments, including FTIR (Fourier-transform Infrared Spectroscopy), SEM (Scanning Electron Microscopy), DSC (Differential Scanning Calorimetry) XRD (X-Ray Diffraction), and PSA (Particle Size Analyzer) were used to characterize an optimum micro-mill milled porang flour (OMMPF). The predicted optimum conditions for producing porang flour were feed rate of 48.86 kg/h, and an inlet air velocity of 9.00 m/s,... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6971 |
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| HIDALGO, MARTIN; Grande, Gaudencio; Hahn, Federico; Cruz, Pedro. |
| Potatoes are one of the most important agricultural products due to their great nutritional and industrial value. However, the mechanization of this crop is low in many countries. The main aim of this investigation was to characterize the Fianna potato variety. The potatoes were characterized morphologically (polar diameter, equatorial diameter, thickness, geometric diameter, arithmetic diameter, sphericity, and weight), mechanically (static friction coefficient, rolling angle, and axial compression), and by impact and firmness tests. The sample potatoes were distributed into four groups (S1, S2, S3, and S4) according to their size. A random complete blocks design was used to determine the mean values of their characteristics. The results of the physical... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8029 |
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| Rahayuningtyas, Ari; Sagita, Diang; Azizah, Ida Farikha; Furqon, Maulana. |
| This study aimed to improve the feeding process in aquaculture fish farming by designing and implementing an automatic feed spreader system that can adjust the feeding amount and schedule according to the fish species and age. The research methodology included functional analysis, prototyping, and testing to evaluate the performance of the prototype. The results showed that the weight sensor on the scales had high accuracy and precision with an error of 0.61 and a deviation of 0.11, respectively. The analysis of dropping and distributing feed showed a direct proportionality between feed mass, filling time and dropping time (R2 was above 0.94). Moreover, the time of spreading the feed was directly proportional to the amount of feed given (R2 was 0.94). The... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8855 |
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| Fasinmirin, Johnson. |
| Abstract Information on radiation use and physiological development such as leaf area of crops planted under screen-house and ambient environments is very scarce in the sub-Saharan part of Africa, This research therefore was aimed at investigating the radiation use of tomato under screen-house and ambient environment with a view to determine its leaf area index (LAI) under different irrigation water treatments: 100% Field capacity (100%FC), 75% FC, 50% FC and rain-fed condition in ambient environment. AccuPAR LAI 80 Ceptometer (Decagon Device) was used for direct measurement of the Above and Below canopy Photosynthetic Active Radiation, Fraction of beam inception (Fb), leaf distribution coefficient (chi), leaf area index (LAI), zenith angle θ, and ratio of... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8781 |
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| NWOKE, OJI ACHUKA; Okeke, Chukwuka; Chukwuma, Emmanuel; Ime, Chukwuemeka; Ulasi, Ginika; Echiegu, Emmanuel; Omah, Augustine. |
| The aim of the study is to determine the effect of ground insulation and feedstock on performance of fixed dome biogas digester. To achieve this, six identical fixed dome biogas digesters with volume of 32 liters were designed, constructed and used to carryout anaerobic digestion of three feedstocks namely cow abdominal waste, poultry droppings and 1:1 mixture of cow abdominal waste and poultry droppings. Three digesters were buried underground for insulation while the remaining three kept on the surface uninsulated. The ANOVA result showed that there were significant differences in the slurry temperature, volume of biogas produced and slurry pH respectively at 5% significant levels. The range of pH, Volume of biogas and slurry temperature (ST) in all the... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8443 |
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| Edu, Chukwuma. |
| The reuse and recycle of rice husk waste help to reduce huge volumes of rice husk from milling industries and solve environmental challenges. In this study, the best mix ratio of rice husk briquette mixed with cassava starch for optimum heat generation was determined. It also determined the effect of clay paste on the heat generation property of the rice husk briquette. Rice husk briquettes with 0.15 – 0.20 cm/s flame propagation and density of 0.2041 – 0.2449 g/cm3 were used. Two sets of specimen were prepared. Specimen I was the rice husk – cassava starch mixture. It was mixed at the mixing ratios of 90:10, 80:20, 70:30, 60:40, and 50:50. Specimen II, which was rice husk – cassava starch – clay paste mixture, was mixed at the mixing ratios of... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8345 |
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| Das, Ashish Kumar. |
| The study was undertaken with the objective of evaluating jam with enhanced nutritional properties and acceptable sensory attributes. The proximate composition of formulated jam samples was ranged from 31.40 to 30.34% for moisture, 0.41 to 0.22% for ash, 0.92 to 0.69% for protein, 0.35 to 0.31% for fat, 0.96 to 0.76% for fiber and 67.48 to 66.34% for carbohydrate. The antioxidant activity was found in sample A (40.9), B (39.65) and C (25.7) % and the total phenolic content of different formulated jam vary from 6.58802 to 2.239 mg GAE/100gm. The physicochemical characteristics of the jam sample were evaluated after the aqueous extract of carrot with papaya juice was turned into jam. The jam was developed by using Carica papaya and carrot in different ratios... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7831 |
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| Radwan, Sara; Hassan, Mona M.; Ahmed, Taghreed H.. |
| Drying kinetics of lemon fruits undergoing microwave-drying was investigated, furthermore, mathematical drying models were statistically analyzed to simulate drying kinetics fitted to the obtained experimental moisture ratio results. The investigation was conducted under three levels of microwave power of 550, 770 and 1100W. The variations in lemon moisture content (M.C.) were recorded versus time until reaching to 14.28, 12.99 and 11.73% d.b. and 14.15, 11.60 and 12.86% d.b. for whole fruit without and with 1%NaOH pretreatment, respectively, at previously power levels, respectively. Meanwhile, for slices, the M.C. (at the same previously power levels, respectively) reached (12.86, 14.15 and 15.47% d.b.), (16.82, 12.86, and 14.15% d.b.) and (12.86, 14.15,... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8179 |
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| nassir, aqeel; Mishall , Abbas; Musin, Sadiq; Hameed, Farkad. |
| This study was aimed at assessing the effects of tillage systems and tillage speed on barley grain production, fuel consumption, specific energy, and soil pulverization. The study was conducted on the agricultural college's fields at the University of Basrah. The investigation included three conventional tillage systems, including disk plow + disk harrow + roller (T1), disk plow + two passes of a disk harrow (T2), and moldboard plow + cultivator + roller (T3), and two reduced tillage systems, including cultivator + roller (T4) and cultivator + disk harrow (T5). Three plowing speeds of 3.70 (S1), 5.68 (S2), and 7.04 (S3) km h-1 were used to prepare the soil for barley planting. The experiment was carried out using a random block design with five treatments... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8741 |
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| Arudra, Dr.Srinivasa Rao. |
| Application of pesticide in recommended dose not only reduces the input cost of chemical but also reduces the ill effects due to excess application of pesticide on crop and environment. A tractor operated swinging lance sprayer was developed for the effective application of chemicals. To standardize optimum operational parameters, the effect of various operational parameters was investigated by using Taguchi design. The operational parameters, such as spacing between spray guns(s), spray gun height (h), swing angle(a) and operating pressure (p) were selected independent parameters, whereas swath width (Sw), and overlap (Op) were considered as performance evaluation characteristics. For conducting experiments and analysis of experimental data,... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2023 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/8597 |
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| Registros recuperados: 1.068 | |
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