农业化学和环境(英文)最新文献

{"title":"Effect of Herbicides Used in Horticulture (2,4-D, Glyphosate and Nicosulfuron) on Snails Achatina fulica (Bowdich, 1720)","authors":"Aya Elichama Désirée Phaceli, M. Koné, Ardjouma Dembélé, Jean Florent Haba, Emile Kouadio Yao","doi":"10.4236/jacen.2021.104026","DOIUrl":"https://doi.org/10.4236/jacen.2021.104026","url":null,"abstract":"","PeriodicalId":68148,"journal":{"name":"农业化学和环境(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70751946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Light-Emitting Diode (LED) Red and Blue Light on the Growth and Photosynthetic Characteristics of Momordica charantia L.","authors":"Guoli Wang, Yongzhi Chen, H. Fan, Ping Huang","doi":"10.4236/jacen.2021.101001","DOIUrl":"https://doi.org/10.4236/jacen.2021.101001","url":null,"abstract":"With andromonoecious Momordica charantia L. (bitter gourd) as material, three light qualities (50 μmol·m-2·s-1) including white LED light (WL), blue monochromatic light (B, 465 nm), and red monochromatic light (R, 650 nm) were carried out to investigate their effects on seed germination, physiological and biochemical parameters, sex differentiation and photosynthetic characteristics of bitter gourd. The results showed that compared to the WL treatment, the R treatment significantly promoted seed germination, seedling height elongation and soluble sugar content, the B treatment significantly increased seedling stem diameter, reducing sugar content and soluble protein content, the R and B treatments both significantly reduced sucrose content, but their POD activity showed no significant difference. Compared with the R treatment, the B treatment significantly increased the total female flower number and female flower nod ratio in 30 nods of main stems. The study of photosynthetic characteristics found that the R and B treatments could effectively increase the stomatal conductance (GS) of leaves, significantly improved the net photosynthetic rate (Pn) compared to the WL treatment, and the effect of the B treatment was better. Compared to the R and WL treatments, the B treatment increased the maximum photosynthetic rate (Pmax), apparent quantum efficiency (AQE) and light saturation point (LSP), and reduced the dark respiration rate (Rd) and light compensation point (LCP) of the leaves. Fit light response curves showed that the adaptability and utilization of weak light in bitter gourd were middle or below, but it showed higher adaptability and utilization of strong light. Thus, it suggests that Momordica charantia is a typical sun plan with lower Rd. In summary, it is concluded that blue light has a positive effect on the seed germination, seedling growth, sex differentiation and improving the photosynthetic performance, and this will lay the foundation for artificially regulating optimum photosynthesis using specific LEDs wavelength, and help to elucidate the relationship how light quality influences the sex differentiation of plant.","PeriodicalId":68148,"journal":{"name":"农业化学和环境(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70751232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Water Dynamics under Drip Irrigation to Proper Manage Water Use in Arid Zone","authors":"Siguibnoma Kevin Landry Ouédraogo, Bawindsom Marcel Kébré, F. Zougmore","doi":"10.4236/JACEN.2021.101004","DOIUrl":"https://doi.org/10.4236/JACEN.2021.101004","url":null,"abstract":"The water resources reduction due to climate changes and also population increase, have contributed to increasing the constraint on water disponibility and accessibility. In the agricultural field, we need moderate soil and water resources management. This work aims to simulate water dynamics in soil under drip irrigation system in arid regions to better manage irrigation water. Simulations are done with soil physical properties of Burkina Faso. We assess maize plant water requirements for the whole growing season. With Hydrus 2D, we simulate water supply in the soil column. We assign atmospheric conditions on the top of the domain, zero flux of water on the lateral sides, and free drainage on the bottom boundary domain. We perform many irrigation events to analyze wetting pattern distribution around the emitter, which allowed us to contain the amount of irrigation water applied, only around the area dominated by roots, and then reduce water losses that roots cannot uptake. According to the different growing stages of the maize crop, we choose proper irrigation duration and frequency, and suggest irrigation schedule for the whole growing season.","PeriodicalId":68148,"journal":{"name":"农业化学和环境(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70751315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Analysis of Conventional Anaerobic Digestion and Bio-Electrochemical Systems in Waste Organics Utilization","authors":"Yana Mersinkova, V. Nenov, Hyusein Yemendzhiev","doi":"10.4236/jacen.2021.104028","DOIUrl":"https://doi.org/10.4236/jacen.2021.104028","url":null,"abstract":"Anaerobic digestion is often used as an approach to deal with high COD waste streams. Compared to the aeration systems it allows better energy management due to the biogas production but also has several limitations including inlet waste streams quality and the additional equipment required for energy harvesting. In recent years, the bio-electrochemical systems (BES) and processes are intensively studied as a method for organic waste utilization, including wastewater. They potentially could bring several benefits to the wastewater treatment, mainly due to avoiding aeration (and aeration cost) and direct energy recovering in the form of electricity. Besides their anaerobic nature, the biological processes in BES are respiration-like contrary to the fermentative degradation typical for conventional anaerobic digestion which eventually will provide better mineralization and higher efficiency in terms of COD and BOD removal in such reactors. This study is a direct comparison between conventional anaerobic digestion and Microbial Fuel Cell (as a typical BES reactor) during utilization of wastewater from industrial production of ethanol by fermentation. COD removal rates and dynamics, energy recovery properties and parameters such as secondary sludge production are investigated in order to characterize the feasibility and technological readiness of BES as a step towards their commercialization.","PeriodicalId":68148,"journal":{"name":"农业化学和环境(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70751883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of Selected Essential and Non-Essential Metals in Three Types of Teff (Eragrostis tef) Cultivated in Southern Ethiopia","authors":"A. Habte, Alemu Lelago, Mesfin Bibiso Doda, Camerun Kastro Kanido","doi":"10.4236/jacen.2020.94020","DOIUrl":"https://doi.org/10.4236/jacen.2020.94020","url":null,"abstract":"Teff (Eragrostis tef) is used to supply staple food “injera” for many Ethiopians. The present study was aimed toward determining the extent of selected metals that can exist in three types of teff cultivated in selected districts of southern Ethiopia. The level of those metals was determined by flame atomic absorption spectrometry. The optimized wet digestion procedure was evaluated employing a spiking method and an acceptable percentage recovery of (91.1% - 108.9%) has been obtained for metals in the teff. Oven dried 1 g of teff samples were digested using 5 mL of HNO3 and 1 mL of HClO4 at 300°C for 3 hours. The result indicated that the mean concentration of metals (in mg/kg dry weight basis) in teff samples were found to be from 1206.9 to 1768.9 of Ca, 2463.9 to 2554.7 of Mg, 82.6 to 109.9 of Na, 2879 to 3075 of K, 207.4 to 239.5 of Fe, 55.9 to 100.4 of Mn, 27.1 to 87.1 of Zn, 5.4 to 45.5 of Cu and 0.118 to 0.130 of Pb respectively. However, Cd is below the method detection limit. A statistical analysis of variance revealed that there was a significant difference (p ≤ 0.05) between the mineral content in three teff types and teff from the three districts. Red teff had higher essential metal contents except Cu followed by brown teff. Strong positive correlation was recognized between Mg with Ca and K, the rest have moderate or weak correlation. Further study has been done on the mineral contents of similar variety or three types of teff with the soil analysis from different locations.","PeriodicalId":68148,"journal":{"name":"农业化学和环境(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43536136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Assessment of Spatial Distribution of Four Different Satellite-Derived Rainfall Estimations and Observed Precipitation over Bangladesh","authors":"D. Roy, S. Hassan, Syeda Sabrina Sultana","doi":"10.4236/jacen.2020.94016","DOIUrl":"https://doi.org/10.4236/jacen.2020.94016","url":null,"abstract":"Given that precipitation is a major component of the \u0000earth’s water and energy cycles, reliable information on the monthly spatial \u0000distribution of precipitation is also crucial for climate science, \u0000climatological water-resource research studies, \u0000and for the evaluation of regional model simulations. In this paper, four \u0000satellite derived precipitation datasets: Climate Prediction Center MORPHING (CMORPH), Tropical Rainfall Measuring \u0000Mission (TRMM), the Precipitation Estimation Algorithm from Remotely-Sensed \u0000Information using an Artificial Neural \u0000Network (PERSIANN), and the global Satellite Mapping of Precipitation \u0000(GSMaP) are spatially analyzed and \u0000compared with the observed precipitation data provided by Bangladesh \u0000Meteorological Department (BMD). For this study, the different precipitations \u0000data sets are spatially analyzed from 2nd May 2019 to 4th May 2019 at the time of Cyclone “FANI”. It is found that the satellite derived precipitation datasets are reasonably matched with the observed but slightly \u0000different.","PeriodicalId":68148,"journal":{"name":"农业化学和环境(英文)","volume":"09 1","pages":"195-205"},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44053568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ecological and Functional Properties of Steppe Soils under Moderate Anthropogenic Impact","authors":"C. Ngun, Y. Pleshakova, M. V. Reshetnikov","doi":"10.4236/jacen.2020.94017","DOIUrl":"https://doi.org/10.4236/jacen.2020.94017","url":null,"abstract":"Steppe soils of a small industrialized city with moderate anthropogenic \u0000impact for example Krasny Kut, Saratov region were analysed to ascertain their ecological and functional \u0000state. In the course of this work, the concentration of heavy metals (Zn, Cu, \u0000Pb, Ni, Cr and Cd) was determined in the soil samples, including the hazard \u0000coefficient (Kо) and the total \u0000contamination coefficient (Zc). Magnetic susceptibility, magnetic coefficient (Kmag), thermomagnetic effect \u0000(dk) of the soil samples were \u0000analysed together with the activity of soil enzymes (dehydrogenases, catalases, \u0000peroxidases and invertases). Using ecological and geochemical analytical \u0000methods, a widespread excess of maximum permissible concentration (MPC) of \u0000mobile forms Ni, Pb, Cu and Zn was recorded in the soil samples of Krasny Kut, \u0000and a single excess of MPC was observed for Cr and Cd. According to Zc indicator values, 4 samples were classified as soils with moderately dangerous \u0000levels of contamination and 2 samples with \u0000dangerous levels of contamination. Using petromagnetic analysis, a few samples \u0000were observed to contain a moderate amount of introduced technogenic magnetic particles \u0000and one sample with a hazardous amount of introduced technogenic magnetic \u0000particles. Medium, high and very high levels of dehydrogenase, catalase, \u0000peroxidase and invertase activities were recorded in the soil samples, \u0000indicating the absence of ecotoxicants inhibiting the enzymes. The observed \u0000peculiarities in the ecological and functional state of soils, representative \u0000of the steppe zone of the Eastern part of the European territory of Russia will \u0000be required for monitoring, reducing and forecasting the anthropogenic burden \u0000on soil ecosystems.","PeriodicalId":68148,"journal":{"name":"农业化学和环境(英文)","volume":"9 1","pages":"206-222"},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43809089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nutritional, Phytochemicals and Antioxidant Properties of Some Popular Pulse Varieties of Bangladesh","authors":"Tanvir Ahmmed, Asma Rahman, U. Salma, Zakia Akter, Mesbah Uddin Ansary, Md. Ibrahim Khalil, Nurul Karim, L. Bari","doi":"10.4236/jacen.2020.94025","DOIUrl":"https://doi.org/10.4236/jacen.2020.94025","url":null,"abstract":"In this study, we estimate the proximate compositions, phytochemicals (polyphenol, flavonoids, flavonol, tannin, protein, carbohydrate, reducing sugar, and β carotene), antioxidant activities, vitamins, minerals, and heavy metals of the four pulses (mung, anchor, chickpea, lentils) and compare among them to find out more nutritious pulse samples. Mung was found to contain the highest amount of polyphenol (98.02 ± 1.74 mg GAE/100 g) and tannin (447.98 ± 9.96 mg TE/100 g) and anchor (771.35 ± 3.76 mg CE/100 g) was rich in flavonoids as compared to other two pulse samples. Mung was also rich in ash, carbohydrate, vitamin B1, copper and anchor was rich in crude fiber, protein, reducing sugar, and vitamin B2 content. The highest amount of phytochemicals contained in mung and anchor corresponded to its highest antioxidant activity in analyzed antioxidant assays respectively. Other two pulses included in this study were found to contain good source of vitamins, minerals and other nutrients.","PeriodicalId":68148,"journal":{"name":"农业化学和环境(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41972338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Organic and Chemical Fertilizer Application on Growth, Yield, and Soil Biochemical Properties of Landrace Brassica napus L. Leaf-and-Stem Vegetable and Landrace (Norabona)","authors":"Takamitsu Kai, M. Tamaki","doi":"10.4236/jacen.2020.94023","DOIUrl":"https://doi.org/10.4236/jacen.2020.94023","url":null,"abstract":"Norabona is generally cultivated in Japan under management systems that use chemical fertilizers and synthetic chemical pesticides. However, the continuous use of these fertilizers and pesticides damages the soil environment and reduces the number of soil microorganisms. There has been little research investigating the effect of organic and chemical fertilizer applications on soil biochemistry and the growth and yield of norabona. In this study, we investigated the effect of organic and chemical fertilizer application on these factors during the norabona growing season from September 2019 to May 2020. Leaf length, shoot height, and shoot width were significantly higher under organic fertilizer management in the early stage of cultivation (in March) than under chemical fertilizer management. However, there was no significant difference between treatments for these growth parameters in later months, nor for any other parameters. Soil TN, and TP contents were significantly higher in the organic fertilizer treatment after harvest than prior to cultivation or after the chemical fertilizer treatment. In addition, soil TC, and volumetric water content were significantly higher in the organic fertilizer treatment than in chemical fertilizer treatment. The higher TC, TN, and C/N ratio in organic fertilizer treated soil appeared to increase the bacterial biomass, leading to enhanced nutrient circulation via N and P circulation activity, producing a rich soil environment with active soil microorganisms.","PeriodicalId":68148,"journal":{"name":"农业化学和环境(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41854573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Study on Rice Growth and Soil Environments in Paddy Fields Using Different Organic and Chemical Fertilizers","authors":"Takamitsu Kai, Motoki Kumano, M. Tamaki","doi":"10.4236/jacen.2020.94024","DOIUrl":"https://doi.org/10.4236/jacen.2020.94024","url":null,"abstract":"Currently, the majority of paddy fields in Japan are grown using chemical fertilizers and synthetic chemical pesticides, since chemical fertilizers can provide the nutrients necessary for plant growth. However, there are concerns regarding the environmental impact of chemical fertilizer and pesticides production, such as reduction of soil microorganisms and water pollution due to the runoff of fertilizer components from the soil caused by excessive fertilizer application. In this study, we investigated the effects of the application of organic and chemical fertilizers on the plant growth of paddy fields, in addition to their effects on the chemical and biological properties of the soil. The panicle numbers of rough and brown rice, the 1000-grain weight of the rough and brown rice, and the percentages of ripened grains were significantly higher in paddy soils grown with organic fertilizers than in those grown with chemical fertilizers. In addition, the total carbon (TC) contents and pH values were significantly higher in the soils of paddy fields grown with organic fertilizers. Furthermore, the soils of paddy fields grown with organic fertilizers exhibited greater bacterial biomasses, N circulation activity, and P circulation activity than the soils of paddy fields grown using chemical fertilizers, although the differences were not significant. In this study, the difference in plant growth was appeared in fertilizer application such as organic and chemical fertilizers. It was indicated that the organic fertilizer and pesticide reduction management increased the soil bacterial biomass and activated the material cycle such as N circulation activity.","PeriodicalId":68148,"journal":{"name":"农业化学和环境(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43238890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}