Egyptian Journal of Agricultural Sciences最新文献

{"title":"EVALUATION OF YIELD AND QUALITY OF SOME SUGAR BEET VARIETIES UNDER SALINITY CONDITIONS AT PORT-SAID GOVERNORATE, EGYPT","authors":"Noran Bassiony, S. Khalil","doi":"10.21608/ejarc.2019.210795","DOIUrl":"https://doi.org/10.21608/ejarc.2019.210795","url":null,"abstract":"Ten imported commercial varieties: BTS-3980, Panther, Athospoly, Oscarpoly, Clavius, Pintea, BTS-8115, Palace, pepite and Carrot, were sown under two different types of soil, saline soil (11.3 dSm -1 ) and the other was non–saline soil (0.8 dSm -1 ) at south Port Said Governorate, Egypt (31° N) and (32° E) during two successive seasons. Sowing date was 15 Sep. in each of the two seasons, 2016/ 2017 and 2017/ 2018 . This investigatiob aim to evaluate the influence of soil salinity stress on root yield and components, b) to identify saline tolerant sugar beet varieties based on salinity tolerance indices (STI), c) study the interrelationships and overlapping among (STI) using spearman rank correlation and biplot graph method, and d) plan appropriate selection strategies for improving both root yield and salt tolerance in sugar beet crop in Egypt. The results indicated that growing sugar beet under salt stress caused reduction in root length, (9.4 and 9.8 cm) root diameter(1.2 and 1.3 cm),frish root weight (252 and the246 g) and yield, (8.24 and 8.11 ton/fed), as compared to nonsalt stress in the 1 st and 2 nd season, respectively. While, salinity reduced potassium, (0.49 and 0.37 meq/100 g beet), Alkalinity(0.84 and 0.76) %, number of harvested roots/fed (3.21 and 3.31 thousand and sugar yield ton/fed. (1.11 and 1.09 ton/fed.) with reductions of %, and compared to non-saline one, respectively. On the contrary, the less saline soil yielded roots with low values of sucrose, extractable sugar %, proline and glycine betaine mg/g. fresh weight with substantial augmentation amounted to (0.84 and 0.91), (0.69 and 0.75%), (1.03 and 1.08) and (1.61 and 1.77) percentages in case of the saline soil in the 1 st and 2 nd season, respectively. Whereas the undesirable excess of (α-amino-N and sodium by meq/100g beet and sugar lost to molasses %) as impurities was (0.44 and 0.43) and (0.76 and 0.74) meq/100g beet, (0.15 and 0.16%) in the 1 st and 2 nd season, respectively. A large array of diversity was observed among the examined varieties. Oscarpoly, Clavius and Athospoly varieties had higher root yield and better stress tolerance indices for salinity than others, therefore can be candidate as the best selectable varieties for salinity tolerance. Meanwhile, BTS-8115 and BTS-3980 varieties had lower yield reduction under stress conditions but they were not classified as stress tolerant varieties for their low yield on the average (low mean production). Key word: Sugar beet varieties, salinity, stress tolerance indices, Spearman rank correlation","PeriodicalId":11430,"journal":{"name":"Egyptian Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87420389","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":"ANALYTICAL STUDY OF THE FEASIBILITY OF SOME VEGETABLE CROPS CULTIVATION UNDER CONDITIONS OF MODERN AGRICULTURE IN RED SEA GOVERNORATE","authors":"M. Mahaba, M. Mohamed","doi":"10.21608/ejarc.2019.210285","DOIUrl":"https://doi.org/10.21608/ejarc.2019.210285","url":null,"abstract":"Greenhouses are important input for agricultural investment in the field of plant production, especially the vegetable crops produced in non-production seasons due to modern and advanced technologies .Greenhouses are one of the means to raise the economic efficiency of the agricultural land and irrigation water units, characterized by high productivity compared to agriculture in the open field. In addition, agriculture in the greenhouses overcomes seasonality of production and provides protection of crops against climatic fluctuations, as well as raising the efficiency of water use, where it save between 30-50% of the amount of irrigation water, which contributes to its spread in different areas ,especially those that suffer water scarcity such as the Arab Republic of Egypt, in particular the desert areas, such as the Red Sea Governorate.The project uses modern technologies in agricultural production such as electricity generation from solar energy and desalination of well water in the production of cucumber and colored peppers in 10 greenhouses , is 350 square meters, (width of 10 meters and length of 35 meters). The total fixed costs of the project, amounted to LE 1,108366 million. The total annual operating costs amounted to LE 200,125. The total annual revenues amounted to LE 737 thousand. The results of the study showed that all the financial indicators were positive and encouraging, which necessitates continued investment in the project. The project is expected to achieve a return rate of 40.82%, which exceeds the prevailing market rate of about 16% .The project will be able to cover the invested capital during 2.39 years only, within 15 years as the default age of the project. The project was subjected to financial analysis under unfavorable conditions such as reduced revenues or raised total project costs, whether investment operating maintenance costs, or shortening the project duration where the financial indicators of the project showed positive and encouraging results, which necessitates continuing the decision to invest in the project. The study reached a lot of results as follows : Design guiding programs for farmers on the importance of greenhouses use and economic feasibility. The New and Renewable Energy Authority will design and publish guiding programs for the importance of the use of solar energy technology to provide electricity, especially to serve the desert areas away from the public electricity grid. The Ministry of Irrigation and Water Resources is spreading awareness about the use of well water desalination technology in desert and coastal areas. The State shall attract and stimulate the private sector to invest in the field of solar energy and desalination. The Egyptian Agricultural Bank provides soft loans for the purpose of establishing greenhouses. Attracting investors and young graduates to expand the use of greenhouses techniques, especially in desert areas. Linking the idea of investment in greenhouses with the p","PeriodicalId":11430,"journal":{"name":"Egyptian Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85012560","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":"RESPONSE OF Lantana camara var. Nana PLANTS TO FOLIAR APPLIED MALIC ACID FOR DECREASING THE HARMFUL EFFECT OF LEAD POLLUTION IN THE IRRIGATION WATER","authors":"N. El-Shanhorey, A. Taha, M. Rida","doi":"10.21608/ejarc.2019.210610","DOIUrl":"https://doi.org/10.21608/ejarc.2019.210610","url":null,"abstract":"The present study was carried-out at Antoniades Research Branch, Horticultural Research Institute, A.R.C. Alexandria, Egypt during the two successive seasons of 2017 and 2018. The aim of the study was to evaluate the effects of irrigation water contaminated with lead on Lantana camara var. Nana plants and the possibility of using malic acid spray treatments to alleviate the effects of lead pollution. Seedlings of Lantana camara var. Nana were planted individually in plastic pots (20 cm diameter) filled with 6 kg of mixture soil (sand and clay (1:1)). The leadcontaminated irrigation water treatments were 0,100, 200 and 300 ppm. The plants were monthly sprayed with malic acid at concentrations of 0, 250 and 500 ppm. The results showed that for vegetative growth parameters there, was no significant difference in the interaction between lead concentrations and foliar spray by malic acid. While a significant reduction was observed in all parameters after irrigation with lead contaminated water, and a significant increase in vegetative growth parameters was observed after 250 ppm malic acid application. For chlorophyll and carbohydrate content, the highest significant value were obtained from plants irrigated with tap water and sprayed with 500 ppm malic acid. While the highest significant amount of lead content in leaves, stem and roots were obtained from the treatment 300 ppm lead without application of malic acid. Key wards: Lantana camara var.Nana, lead, malic acid.","PeriodicalId":11430,"journal":{"name":"Egyptian Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77549335","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 SOME HERBICIDES AND MULCHING TREATMENTS AS NATURAL ALTERNATIVES USED FOR WEED CONTROL AND PEA (Pisum sativum L.) PRODUCTIVITY WITH MONITORING HERBICIDE RESIDUES.","authors":"R. Galal, A. Hassanein, R. Gheth","doi":"10.21608/ejarc.2019.210606","DOIUrl":"https://doi.org/10.21608/ejarc.2019.210606","url":null,"abstract":"A two-year field experiment was carried out at Sids Horticulture Research Station during 2015/2016 and 2016/2017 winter seasons to study the effect of thirteen weed control treatments. The treatments were Amex 2.5 l/fed., Amex1.875 l/fed. followed by one hand hoeing at 40 days after sowing; Ultra afalon 1L/fed., Ultra afalon 0.750 l/fed. followed by one hand hoeing at 40 days after sowing; Stomp extra 1.7 l/fed., Stomp extra 1.275 l/fed. followed by one hand hoeing at 40 days after sowing, Gesagard 1.5 l/fed., Gesagard 1.125 l/fed. followed by one hand hoeing at 40 days after sowing; mulching by black, green and transparent polyethylene sheets, hand hoeing twice at 20 and 40 days after sowing as compared with unweeded check in complete randomized blocks design with three replicates on weeds, pea yield and its components. Herbicide residues were also monitored by HPLC chromatography in seed green pea. Results show that the best treatments for controlling total annual broad leaf and grassy weeds and the highest yield correlated negatively with weed biomass as g/m 2 and positively with yield components of pea with mulching by black and green polyethylene sheets and exceeded applied soil acting herbicides of Amex, Ultra afalon, Stomp extra and Gessagard and were almost equal to the above mentioned reduced rates of these herbicides followed by hand hoeing. For herbicide residues detection in green pea seeds was found to be below the maximum residue limit with single herbicide or their reduced rates combined with one hand hoeing. Both Ultra afalon or Gessagard treatments residues were lower than Stomp extra or Amex herbicides. Stomp extra 1.275 l/fed. followed by one hand hoeing at 40 days after sowing and mulching by black polyethylene were the best treatments for weed control and pod green yield in both season. The highest fresh pod yield (ton/fed.) or seed yield (kg/fed.) and correlated negatively with the different studied weed categories. Gessagard followed by one hoeing or Stomp extra followed by one hoeing and mulching by black polyethylene treatments were economically feasible than other weed control treatments. Mulching by black and green polyethylene sheets can be recommended as a good and clean alternative for weed control by herbicides in pea crop and can be used in organic farming systems.","PeriodicalId":11430,"journal":{"name":"Egyptian Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85794573","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":"PREDICTING YARN QUALITY PROPERTIES VIA OVERCOMING THE MULTICOLLINEARITY OF COTTON FIBER PROPERTIES","authors":"I. Ebaido, H. Meabed","doi":"10.21608/ejarc.2019.210601","DOIUrl":"https://doi.org/10.21608/ejarc.2019.210601","url":null,"abstract":"When predicting yarn quality properties, the collinearity or common variance of cotton fiber characteristics as predictors, result in unreal regression models. The approach of this study is using Principle Component Analysis (PCA) to avoid this issue by extracting independent factors in their effect from each other summarizes cotton fiber properties. Four lint cotton grades of five of Egyptian cotton varieties belong to Extra-long (Giza 88 and Giza 92) and Long staple (Giza 86, Giza 90 and Giza 95) classes used to perform fiber tests. Cotton Classification System (CCS-V5.3) used to measure cotton fiber characteristics as predictors. Yarn strength in terms of Lea product, single yarn strength and yarn unevenness of Ne 40 and 60 counts of ring spun yarns were the dependent variables. The results showed significant intercorrelations matrix among CCS measurements. The initial solution extracted only three factors that have eigenvalues more than 1.00. These 3 factors accounted for 89.716 % of the common variance shared by all measurements. The communalities or % variance in each cotton fiber measurement of CCS accounted for by the three factors was not the same. The 3 factors as predictors could predict yarn quality characteristics significantly, and with high contributions (% R 2 ). But % R 2 valued less than that of ordinary regression models. This audit is a satisfactory improvement to predict yarn quality characteristics from cotton fiber properties accurately.","PeriodicalId":11430,"journal":{"name":"Egyptian Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72595333","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":"CAUSES OF THE PHENOMENON OF SCHOOL DROPOUT AMONG GIRLS AND ITS IMPACTS IN RURAL AREAS OF EL-AYAT DISTRICT, GIZA GOVERNORATE,EGYPT","authors":"G. El-shaer, M. Radwan","doi":"10.21608/ejarc.2019.210600","DOIUrl":"https://doi.org/10.21608/ejarc.2019.210600","url":null,"abstract":"The present research aimed to identify the Causes of the phenomenon of School Dropout among girls and its impacts; the reasons related to the girl herself, the social reasons, the economic reasons, the reasons related to the school environment, and determining the social, economic and psychological impact of the phenomenon; as well as respondents' proposals to overcome the phenomenon. This research was conducted on 140 respondents of householders from the villages of the sample, data were collected through a questionnaire during the months of November and December 2018. After that, data have been discharged and analyzed statistically; tables, percentage, simple correlation coefficient, Chi square, and average degree were used in the presentation and analysis of results. It was clear from the results that:The most important reasons of the phenomenon of girls' school dropout related to the girl were the weakness of the general health of the girl, the weakness of self-confidence, the sense of deprivation and oppression. The most important social reasons of the phenomenon of girls' school dropout were the presence of a suitable groom for the girl, the lack of importance of certificate and education, preferring males' education, frequent family problems and disputes, the death of the father or mother. The most important economic reasons of the phenomenon of girls' school dropout were the inability to spend on the girl to complete education, insufficient income to spend on the family, having many children, the lack of permanent work, and the girl work to help family in living. The most important reasons of the phenomenon of girls' school dropout related to the school environment were the repetition of school failure, the long distant of school to girls' houses, poor school facilities, lack of good treatment by teachers, classroom density, and lack of school activities. The most important social effects of the phenomenon of girls' school dropout were illiteracy, lack of awareness, early marriage, inability of girls to raise their children as necessary, many problems and family disputes, high divorce rates, lack of time value importance for the girl, lack of participation value importance for the girl. The most important economic effects of the phenomenon of girls' school dropout were high child labor, rising unemployment, increasing the financial burden on the family. The most important psychological effects of the phenomenon of girls' school dropout: the girl's feeling of depression, her constant sense of anxiety, her sense of permanent disability, and feeling not belonging. There was a significant relationship between the educational statue of the respondents and their opinion about the importance degree of the social effects of the phenomenon of girls' school dropout. Also, there was a positive significant relationship between the number of family members' variable of the respondents and their opinion about the importance degree of the economic effec","PeriodicalId":11430,"journal":{"name":"Egyptian Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85848481","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":"SOCIO- ECONOMIC STUDY ON THE IMPACT OF LUMPY SKIN DISEASE ON COWS IN QALYUBIA GOVERNORATE","authors":"Fatma El-Bateh, M. Elhabbaq, Rabab Mohammed","doi":"10.21608/ejarc.2019.210598","DOIUrl":"https://doi.org/10.21608/ejarc.2019.210598","url":null,"abstract":"In view of the importance of development of the animal production sector, the spread of some epidemiological diseases in Egypt during the years 2018 and 2019, the most important of which was the lumpy skin disease. This caused many breeders to suffer large economic losses.which aimed the identification of the economic and social effects of lumpy skin disease on cows in Qalyubia Governorate by identifying the status of local production of red meat in Egypt, the time development of immunization with lumpy skin vaccine, identifying the socio-economic characteristics of the respondents, the most important variables of biosafety, the differences between the knowledge of the respondents in the different groups and estimating the extent of the loss caused by the lumpy skin disease on the small producers, the identification of the most important indicators of productivity and economic efficiency of the head of dairy cows and the behavior of consumers and the butchers and the economic, social and environmental impacts expected due to the spread of the disease and finally identify the problems of producers and their proposals to cope with the disease. The present study was conducted in the districts of Al-Qanatir Al-Khairiya and Al-Khanka, using a questionnaire designed and tested to collect data on a sample of 189 respondents divided into four groups represented by the breeders who had the disease in their farms and the farmers who do not have the disease, the consumers and the butchers. Some statistical measures are used in economic analysis such as regression and (T) test and ANOVA using SPSS. The study found the following results: The increase in the quantities of all red meat types produced each year, which was significant and the quantity of beef produced was affected by time factors whose effect was greater than that on other types of red meat produced. The role of preventive medicine in the immunizations against lumpy skin disease has been reduced which help of the extension of the increasing epidemiological foci of the disease in recent times. There is an inverse relationship between the educational level and the breeder's experience of increasing the numbers of infected animals and the reluctance of the majority of breeders to inform government agencies about the disease, in addition to the lack of the knowledge of the disease and how to prevent and cure it. More than half of the breeders do not care about bio-safety factors such as immunization, isolation of animals, and changing and cleaning of the cow bedding. The effect of significant differences between the knowledge of the respondents regarding the procedures for isolating infected or suspected animals, changing and disinfecting the bedding, and the sanitary disposal of carcasses of dead animals by burning or burial, as well as the measures to vaccinate animals by the vaccine The high mortality rate in calves compared to cows due to the severity of the effect of the disease on small calves ","PeriodicalId":11430,"journal":{"name":"Egyptian Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86979572","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 OF SOME DEMOGRAPHIC, SOCI-ECONOMIC ASPECTS OF WOMEN IN THE RURAL AND URBAN AREAS OF ASSIUT GOVERNORATE","authors":"Randa A. Sultan, Samia Helal","doi":"10.21608/ejarc.2019.210278","DOIUrl":"https://doi.org/10.21608/ejarc.2019.210278","url":null,"abstract":"Women's issues in the Arab Republic of Egypt lately witness a great interest and a strong belief in the important role they play in community development. However, rural women suffer various types of retardation and lack of education, health or living services although they play many important roles that drive the rural developmental process. Despite numerous attempts by the government to improve women's conditions in society, rural women's conditions had no impact because all programs for women benefit urban women rather than rural women, who suffer social isolation. Therefore, the present research aimed to study some of the Demographic, Soci-economic and living aspects of both rural and urban women in Assiut Governorate, as well as identify the differences between women in rural and urban areas in the these aspects. In order to achieve this, the research relied on two types of data, mamely secondary data from the 2017 census and preliminary data, which have been collected through a questionnaire prepared for this purpose. Five centers were randomly selected and the city was chosen as urban. Each village was randomly chosen to represent the rurals, The data were collected from a sample of 250 families from each of the selected cities and villages. The data from the recent census of 2017 showed that there were some differences between rural and urban women in some social, demographic and economic aspects. The data collected from the study sample revealed differences in many demographic aspects such as age of marriage, preferred age of marriage for males, preferred age of marriage for females, number of births, number of children desired, and the use of family planning methods. Social aspects included marriage, decision making, community participation, openness to the outside world, educational aspects such as preference for educating children rather than learning a craft, the importance of educating girls. Health aspects included attending to a doctor during pregnancy, continuing to vaccinate children, using home remedies, economic aspects included having a bank account, having an insurance policy, preference for private employment, and participation in household expenses. Living conditions included the dwelling being healthy, certain characteristics of the dwelling, agricultural aspects such as land ownership, poultry farming and animal husbandry.","PeriodicalId":11430,"journal":{"name":"Egyptian Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80460345","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":"PHOSPHORUS FRACTIONS IN SOIL AMENDED BY MANURE, INORGANIC AND BIO NITROGEN FERTILIZERS UNDER VARIOUS INCUBATION PERIODS","authors":"M. Khalafalla, Y. Sayed","doi":"10.21608/ejarc.2019.210280","DOIUrl":"https://doi.org/10.21608/ejarc.2019.210280","url":null,"abstract":"The peril of phosphorus wastage from manured soils is more related to phosphorus fraction than the total phosphorus concentration in manure. Biogeochemical change of different forms of organic and inorganic phosphorus controls soil phosphorus availability. This study aimed to assess the impact of different nitrogen fertilizers (slow or fast release mineral, organic and bio) under various incubation periods (14, 30 and 60 days) on soil phosphorus forms. Under treatment of fast release nitrogen + organic + bio fertilizers (FOB), total and organic P increased by increasing incubation period to one month, then decreased when the incubation period reached two months. The inorganic P decreased as the incubation period increased while the opposite trend was noticed for available P. The treatments of slow release nitrogen + organic + bio fertilizers (SOB), fast release nitrogen + organic fertilizers (FO) and slow release nitrogen + organic fertilizers (SO) realized an increase in both total and organic P by increasing the incubation period. As the incubation period increased, the SOB, FO and SO treatments decreased the inorganic P while the available P remained almost constant. Under the OB treatment (organic + bio fertilizers), both total and organic P were decreased as the incubation period increased. The inorganic P changed slightly and the available P increased by increasing the incubation period. After 14 days of incubation period, the low values of C:P ratio (2830) that resulted from OB and C treatments maximized the values of available P (35.5136.85 ppm), organic P (247.1 – 258.8 ppm) and total P (314.9 – 331.0 ppm), while reduced the value of inorganic p (67.8472.19 ppm) and the opposite trend was true. After one month incubation period, a decrease in C:P ratio with FO, SO and OB treatments was erved. The highest values of both total P (351.8 ppm) and available P (40.1 ppm) were recorded at C:P ratio value of 29. The least values of both total P (197.7 ppm) and available P (18.2 ppm) were recorded at 47 C:P. After two month of incubation period, C:P ratios were less than those at 14 and 30 days incubation period under all soil treatments. Available P increased as the C:P ratio increased. The highest values of C:P ratio (35) was recorded at (41.94 ppm) available P value that resulted from FOB treatment. While, the least values of C: P ratio (28) was recorded at (26.1 ppm) available P value that resulted from FO treatment. It was noticed that the lowest C:P ratio and the highest value of available P were recorded under OB treatment.","PeriodicalId":11430,"journal":{"name":"Egyptian Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90214559","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":"THE USE OF Senecio cineraria PLANTS SPRAYED WITH CITRIC ACID FOR LEAD POLLUTION PHYTOREMEDIATION","authors":"N. El-Shanhorey, A. Adam, F. El-Tony","doi":"10.21608/ejarc.2019.210279","DOIUrl":"https://doi.org/10.21608/ejarc.2019.210279","url":null,"abstract":"The present study was carried out at Antoniadis Research Branch, Horticulture Research Institute A.R.C. Alexandria, Egypt during 2017 and 2018 seasons. This study aim to investigate the effect of for levels of lead 0,100, 200 and 300 ppm) in water irrigation and three different concentrations of citric acid (0,250 and 500 ppm) as foliar application on the vegetative growth and chemical composition of Senecio cineraria. Moreover, this investigation aim to study the ability of using Senecio cineraria as lead phytoremediation. The results exhibited significant reduction in all vegetative parameters as affected by lead concentration treatments. On the other hand, significant increment in vegetative growth parameters was detected by using 500 ppm citric acid. Concerning chlorophyll and carbohydrates contents, the highest significant values were obtained under tap water irrigation (0 and 0 levels of lead and citric acid). Moreover,the results showed no significant effect of the combinations (interaction) between lead and citric acid concentrations on vegetative growth parameters. Meanwhile, the results showed, the highest amount of lead sentient in leaves and roots was detected under the treatments combination (300 ppm load 0 citric acid). Finally, the results also showed, it is possible to use Senecio cineraria hands as lead phytoremediation by using citric acid (300 ppm) as foliar application.","PeriodicalId":11430,"journal":{"name":"Egyptian Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72569664","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}