Pub Date : 2021-12-30DOI: 10.21608/ajs.2021.79143.1387
Esraa Masria, Abdelghany Elgandy, K. Elbagoury, Essam A. Wasif
: This study aimed to examine the consequences of three regimes for irrigation on cucumber crops and their growth indication, production, and water productivity under greenhouse cultivation. Cucumber seedlings were planted in May 2018 under a greenhouse condition. Three regimes of drip irrigation were examined, first 100%, 80%, and 50% of ETc namely T1, T2, and T3, respectively. Second regime was systems of drip irrigation (surface and sub-surface irrigation), finally the third is drippers discharge which used (2 l/h and 4 l/h). Results indicated clearly that the best production was under 80% ETc regime by 2 l/h dripper for surface and subsurface that was 10.1 and 11.2 ton/greenhouse respectively with IR 172 m 3 /season and the best regime by using 4 l/h was 50% ETc for surface and sub-surface respectively which was 11 and 11.5 ton/greenhouse with IR 216 m 3 /season which saved about half a quantity of irrigation water. On the other hand, the very best water productivity value (WP) was under 80% ETc was 58.7 and 65.4 kg/m 3 under surface (S) and sub-surface (SS) drip irrigation respectively by 2
{"title":"Management of Irrigation Water for Cucumber Crop by Using Drip Irrigation Systems under Greenhouses","authors":"Esraa Masria, Abdelghany Elgandy, K. Elbagoury, Essam A. Wasif","doi":"10.21608/ajs.2021.79143.1387","DOIUrl":"https://doi.org/10.21608/ajs.2021.79143.1387","url":null,"abstract":": This study aimed to examine the consequences of three regimes for irrigation on cucumber crops and their growth indication, production, and water productivity under greenhouse cultivation. Cucumber seedlings were planted in May 2018 under a greenhouse condition. Three regimes of drip irrigation were examined, first 100%, 80%, and 50% of ETc namely T1, T2, and T3, respectively. Second regime was systems of drip irrigation (surface and sub-surface irrigation), finally the third is drippers discharge which used (2 l/h and 4 l/h). Results indicated clearly that the best production was under 80% ETc regime by 2 l/h dripper for surface and subsurface that was 10.1 and 11.2 ton/greenhouse respectively with IR 172 m 3 /season and the best regime by using 4 l/h was 50% ETc for surface and sub-surface respectively which was 11 and 11.5 ton/greenhouse with IR 216 m 3 /season which saved about half a quantity of irrigation water. On the other hand, the very best water productivity value (WP) was under 80% ETc was 58.7 and 65.4 kg/m 3 under surface (S) and sub-surface (SS) drip irrigation respectively by 2","PeriodicalId":8366,"journal":{"name":"Arab Universities Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43810176","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}
Pub Date : 2021-12-30DOI: 10.21608/ajs.2021.92821.1412
Rabab Desouky Alam, A. Sobeiha, Abdel-Aziz Khdir, N. Alsenosy
: Study was conducted to assess two enzyme detoxifying activities and insecticide-resistance gene expression quantitation using real-time (PCR). Four populations of pink bollworm were compared with baseline laboratory strain. Field populations showed higher levels of enzymatic activity, glutathione-S-transferase and β–esterases, than those of the laboratory strain. The amplification curves scored a cycle threshold ( Ct ) value of 25 for the ribosomal protein subunit7 ( rps 7). For the BtR gene, the Ct values of analyzed biological groups ranged from 20 for laboratory strain to 24 for Fayoum group. For Cad1 , the Ct values ranged from 19 for laboratory strain to 23 for Fayoum and Qalubia populations. Therefore, the present work intro-duces a method for the challenge of monitoring resistance to Bt toxins in crops which require, according to IPM (Integrated pest management) pro-gram,
{"title":"Detoxifying Enzymatic Activity and Insecticide-Resistance Gene Expression in Field Populations of Pink Bollworm (Pectinophora Gossypiella (Saund.))","authors":"Rabab Desouky Alam, A. Sobeiha, Abdel-Aziz Khdir, N. Alsenosy","doi":"10.21608/ajs.2021.92821.1412","DOIUrl":"https://doi.org/10.21608/ajs.2021.92821.1412","url":null,"abstract":": Study was conducted to assess two enzyme detoxifying activities and insecticide-resistance gene expression quantitation using real-time (PCR). Four populations of pink bollworm were compared with baseline laboratory strain. Field populations showed higher levels of enzymatic activity, glutathione-S-transferase and β–esterases, than those of the laboratory strain. The amplification curves scored a cycle threshold ( Ct ) value of 25 for the ribosomal protein subunit7 ( rps 7). For the BtR gene, the Ct values of analyzed biological groups ranged from 20 for laboratory strain to 24 for Fayoum group. For Cad1 , the Ct values ranged from 19 for laboratory strain to 23 for Fayoum and Qalubia populations. Therefore, the present work intro-duces a method for the challenge of monitoring resistance to Bt toxins in crops which require, according to IPM (Integrated pest management) pro-gram,","PeriodicalId":8366,"journal":{"name":"Arab Universities Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44813980","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}
Pub Date : 2021-12-30DOI: 10.21608/ajs.2021.91732.1408
E. Rashed, H. Ali, M. Attia, E. Bendary, K. Ramadan
: In the sake of enhancing the thermal stability of α-Tocopheryl acetate (α-TA) and Strawberry Anthocyanins (AN), their encapsulation with starch or β-Cyclodextrin were prepared and characterized by UV-Vis and IR spectra in addition to thermal analysis. Thermal stability was investigated by comparing the thermographs of each host and guest with that of the prepared complex. Both hosts provided extra thermal stability to both guests where α-TA is stabilized from 230 to 291 o C by complexation with starch and to 285 o C by encapsulation with β-CD. AN was also stabilized from 40.02 o C to 75.57 and 79.46 o C by complexation with starch and β-CD respectively.
{"title":"Preparation and Thermal Stability of α-Tocopheryl acetate and Strawberry Anthocyanidins Complexed with Starch and β-Cyclodextrin","authors":"E. Rashed, H. Ali, M. Attia, E. Bendary, K. Ramadan","doi":"10.21608/ajs.2021.91732.1408","DOIUrl":"https://doi.org/10.21608/ajs.2021.91732.1408","url":null,"abstract":": In the sake of enhancing the thermal stability of α-Tocopheryl acetate (α-TA) and Strawberry Anthocyanins (AN), their encapsulation with starch or β-Cyclodextrin were prepared and characterized by UV-Vis and IR spectra in addition to thermal analysis. Thermal stability was investigated by comparing the thermographs of each host and guest with that of the prepared complex. Both hosts provided extra thermal stability to both guests where α-TA is stabilized from 230 to 291 o C by complexation with starch and to 285 o C by encapsulation with β-CD. AN was also stabilized from 40.02 o C to 75.57 and 79.46 o C by complexation with starch and β-CD respectively.","PeriodicalId":8366,"journal":{"name":"Arab Universities Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49034050","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}
Pub Date : 2021-12-30DOI: 10.21608/ajs.2021.87950.1403
Nour Tamim, D. Salama, Hani Srour, E. Ibrahim
Adjuvant, Biochemical parameters, Calves, FMD, Humoral immunity, Vaccine Abstract: The foot and mouth disease (FMD) vaccine is used to control the FMD in cloven-hoofed animals including calves. The most important step in vaccine preparation is the selection of a suitable adjuvant which plays a main role in the vaccine’s potency. The present study is an attempt to use clinoptilolite instead of Montanide oil to enhance the efficiency of the FMD vaccine and reduce its production cost. Twelve calves were split into four groups. Three groups were vaccinated with FMD vaccine with different adjuvants i.e. 100% Montanide (ISA 206), 50% of Montanide with 1.0 μg/dose of clinoptilolite (ISA 206+CLINP), and by replacing the 100% of Montanide by 1 μg/dose of clinoptilolite (CLINP). The fourth group was unvaccinated. Results showed that calves vaccinated with (ISA 206+CLINP) FMD vaccine expressed the highest and the longest periods of immune response until 38 weeks. While groups vaccinated with (CLINP) or (ISA 206) vaccine showed only protection up to 26 and 34 weeks respectively. Also, our results showed that clinoptilolite improved organ functions resulting from the stress of vaccines. Finally, this study recommended the use of clinoptilolite with Montanide oil as a potential adjuvant in the FMD vaccine to give high stimulation of the immune response.
{"title":"Effect of Clinoptilolite on Humoral Immunity and Biochemical Parameters in Calves Vaccinated with Foot and Mouth Disease Vaccine","authors":"Nour Tamim, D. Salama, Hani Srour, E. Ibrahim","doi":"10.21608/ajs.2021.87950.1403","DOIUrl":"https://doi.org/10.21608/ajs.2021.87950.1403","url":null,"abstract":"Adjuvant, Biochemical parameters, Calves, FMD, Humoral immunity, Vaccine Abstract: The foot and mouth disease (FMD) vaccine is used to control the FMD in cloven-hoofed animals including calves. The most important step in vaccine preparation is the selection of a suitable adjuvant which plays a main role in the vaccine’s potency. The present study is an attempt to use clinoptilolite instead of Montanide oil to enhance the efficiency of the FMD vaccine and reduce its production cost. Twelve calves were split into four groups. Three groups were vaccinated with FMD vaccine with different adjuvants i.e. 100% Montanide (ISA 206), 50% of Montanide with 1.0 μg/dose of clinoptilolite (ISA 206+CLINP), and by replacing the 100% of Montanide by 1 μg/dose of clinoptilolite (CLINP). The fourth group was unvaccinated. Results showed that calves vaccinated with (ISA 206+CLINP) FMD vaccine expressed the highest and the longest periods of immune response until 38 weeks. While groups vaccinated with (CLINP) or (ISA 206) vaccine showed only protection up to 26 and 34 weeks respectively. Also, our results showed that clinoptilolite improved organ functions resulting from the stress of vaccines. Finally, this study recommended the use of clinoptilolite with Montanide oil as a potential adjuvant in the FMD vaccine to give high stimulation of the immune response.","PeriodicalId":8366,"journal":{"name":"Arab Universities Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42332446","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}
Pub Date : 2021-12-30DOI: 10.21608/ajs.2021.92246.1411
Heba M. Emam, M. Ibrahim, Mervat A. R. Ibrahim, S. El-Sayed
{"title":"Greenhouse and Laboratory Evaluation of The Efficiency of Green Silicon Dioxide Nanoparticles Against Tetranychus urticae (Koch)","authors":"Heba M. Emam, M. Ibrahim, Mervat A. R. Ibrahim, S. El-Sayed","doi":"10.21608/ajs.2021.92246.1411","DOIUrl":"https://doi.org/10.21608/ajs.2021.92246.1411","url":null,"abstract":"","PeriodicalId":8366,"journal":{"name":"Arab Universities Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46055248","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}
Pub Date : 2021-12-30DOI: 10.21608/ajs.2021.91572.1407
A. Othman, Mohammed El-Zemaity, W. El-sayed, A. Hanafi
: Glyphosate (GLY) and glufosinate ammonium (GLUA) are broad spectrum, non-selective, contact herbicides which are commonly used in fruit farms. Achieving the separation and detection of glyphosate and glufosinate from soil samples by chromatograph are a challenging task as they are ionic and highly water soluble compounds. The aim of this study is conducted to determine the dissipation of GLY and GLUA applied at two dose levels in three depth soils of orange orchards. The residues of GLY and GLUA were determined by HPLC-UV detector. The residual detection limit of GLY and GLUA of the method were 0.03 and 0.05 ng/g in soil respectively. The obtained data indicated that GLY persistent in soil is very short, only for 7 days, following applications of 1 to 2 kg/fed in orange crop. GLUA dissipated in soil within 14 days of application, regardless of dose. The half-life (T/2) of GLY and GLUA were 1.68 and 1.42 days in at 0 cm depth, respectively. There was no significant difference between the half-life of the two herbicides in soil at three depths. These results showed that GLY dissipation
{"title":"Dissipation of Glyphosate and Glufosinate Ammonium in Soil and Weed Control in Citrus orchards, under Egyptian Conditions","authors":"A. Othman, Mohammed El-Zemaity, W. El-sayed, A. Hanafi","doi":"10.21608/ajs.2021.91572.1407","DOIUrl":"https://doi.org/10.21608/ajs.2021.91572.1407","url":null,"abstract":": Glyphosate (GLY) and glufosinate ammonium (GLUA) are broad spectrum, non-selective, contact herbicides which are commonly used in fruit farms. Achieving the separation and detection of glyphosate and glufosinate from soil samples by chromatograph are a challenging task as they are ionic and highly water soluble compounds. The aim of this study is conducted to determine the dissipation of GLY and GLUA applied at two dose levels in three depth soils of orange orchards. The residues of GLY and GLUA were determined by HPLC-UV detector. The residual detection limit of GLY and GLUA of the method were 0.03 and 0.05 ng/g in soil respectively. The obtained data indicated that GLY persistent in soil is very short, only for 7 days, following applications of 1 to 2 kg/fed in orange crop. GLUA dissipated in soil within 14 days of application, regardless of dose. The half-life (T/2) of GLY and GLUA were 1.68 and 1.42 days in at 0 cm depth, respectively. There was no significant difference between the half-life of the two herbicides in soil at three depths. These results showed that GLY dissipation","PeriodicalId":8366,"journal":{"name":"Arab Universities Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49024814","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}
Pub Date : 2021-12-30DOI: 10.21608/ajs.2021.90748.1405
R. Rashwan
{"title":"Susceptibility of Some Ornamental Plants to Aphid Infestation and It's Associated with Plant Biochemical Components and Morphological Structures","authors":"R. Rashwan","doi":"10.21608/ajs.2021.90748.1405","DOIUrl":"https://doi.org/10.21608/ajs.2021.90748.1405","url":null,"abstract":"","PeriodicalId":8366,"journal":{"name":"Arab Universities Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44059483","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}
Pub Date : 2021-12-30DOI: 10.21608/ajs.2021.95510.1416
Dina Omran, A. Ibrahim, M. Mohamed, Mona I. Nossier
: A series of lab and field experiments were carried out to evaluate the possibility of using some substances as adjuvants added to the foliar fertilizer tank to improve fertilizer application and use efficiency. Each of the suggested substances was prepared in 10 concentrations treatments, ranging between 0.05 and 2g/L. The effect of each concentration on static surface tension and static contact angle in liquid/air/glass and solid plant leaves/air interface were used to evaluate and find out the optimum concentration of each substance to be used as adjuvant. An Adjmix-D1 was prepared using 0.6g/L Triethanolamine and 0.6g/L liquid soap as surfactants, 0.6g/L glycerin as a humectant, 0.6 g/L Arabic gum as a sticker and 0.6g/L urea as a penetrator. The obtained results showed that fruit yield as well as N, K, Fe, Zn and Mn contents in white eggplants and cucumber leaves are positively increased by the applications of improved foliar fertilizers (IFF). This increase can be arranged in the following descending order: Adjmix-D1
{"title":"Evaluation of Some Adjuvants in Improving Foliar Fertilizers","authors":"Dina Omran, A. Ibrahim, M. Mohamed, Mona I. Nossier","doi":"10.21608/ajs.2021.95510.1416","DOIUrl":"https://doi.org/10.21608/ajs.2021.95510.1416","url":null,"abstract":": A series of lab and field experiments were carried out to evaluate the possibility of using some substances as adjuvants added to the foliar fertilizer tank to improve fertilizer application and use efficiency. Each of the suggested substances was prepared in 10 concentrations treatments, ranging between 0.05 and 2g/L. The effect of each concentration on static surface tension and static contact angle in liquid/air/glass and solid plant leaves/air interface were used to evaluate and find out the optimum concentration of each substance to be used as adjuvant. An Adjmix-D1 was prepared using 0.6g/L Triethanolamine and 0.6g/L liquid soap as surfactants, 0.6g/L glycerin as a humectant, 0.6 g/L Arabic gum as a sticker and 0.6g/L urea as a penetrator. The obtained results showed that fruit yield as well as N, K, Fe, Zn and Mn contents in white eggplants and cucumber leaves are positively increased by the applications of improved foliar fertilizers (IFF). This increase can be arranged in the following descending order: Adjmix-D1","PeriodicalId":8366,"journal":{"name":"Arab Universities Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44783077","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}
Pub Date : 2021-12-30DOI: 10.21608/ajs.2021.77849.1383
Omniea Allam, S. Hassan, A. Kandil, A. Abdel Hamid, A. Korayem
: Pot experiment was carried out in seventeen levels of fertilization to evaluate the effect of the bio-fertilizer mixture alone or in combination with chemical fertilizer (NPK) on Fennel ( Foeniculum vulgare Mill). Biofertilizer was a mixture of Azotobacter chroococcum , Bacillus circulans and Vesicular-arbuscular mycorrhiza. Results indicated that use of bio-fertilizer at 3.75 ml/pot four times with 25% of NPK gave the highest significant values of vegetative growth, yield parameters, and also NPK uptake; however, fertilizing with bio-fertilizers without NPK application showed the lowest significant values in the two experimental seasons. The same addition of biofertilizer gave the highest significant values of total microbial count of soil and increased cumulative CO 2 ; whereas addition of 100% NPK gave the lowest significant values in both seasons. The full dose of NPK significantly increased volatile oil percentage while the addition of bio-fertilizer only significantly decreased it in both seasons. GC analysis of essential oil showed that the highest percentage of anethol (12.77 %) was obtained by applying 3.75 ml/pot bio-fertilizer added one time + 25% NPK and decreased estragole (72.78%).
{"title":"Impact of Bio- and chemical fertilization on Growth, Yield, Essential oil and Chemical Composition of Fennel (Foeniculum vulgare Mill.) Plant.","authors":"Omniea Allam, S. Hassan, A. Kandil, A. Abdel Hamid, A. Korayem","doi":"10.21608/ajs.2021.77849.1383","DOIUrl":"https://doi.org/10.21608/ajs.2021.77849.1383","url":null,"abstract":": Pot experiment was carried out in seventeen levels of fertilization to evaluate the effect of the bio-fertilizer mixture alone or in combination with chemical fertilizer (NPK) on Fennel ( Foeniculum vulgare Mill). Biofertilizer was a mixture of Azotobacter chroococcum , Bacillus circulans and Vesicular-arbuscular mycorrhiza. Results indicated that use of bio-fertilizer at 3.75 ml/pot four times with 25% of NPK gave the highest significant values of vegetative growth, yield parameters, and also NPK uptake; however, fertilizing with bio-fertilizers without NPK application showed the lowest significant values in the two experimental seasons. The same addition of biofertilizer gave the highest significant values of total microbial count of soil and increased cumulative CO 2 ; whereas addition of 100% NPK gave the lowest significant values in both seasons. The full dose of NPK significantly increased volatile oil percentage while the addition of bio-fertilizer only significantly decreased it in both seasons. GC analysis of essential oil showed that the highest percentage of anethol (12.77 %) was obtained by applying 3.75 ml/pot bio-fertilizer added one time + 25% NPK and decreased estragole (72.78%).","PeriodicalId":8366,"journal":{"name":"Arab Universities Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48027350","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}
Pub Date : 2021-12-30DOI: 10.21608/ajs.2021.87863.1402
Abdelrahman Medhat Saleh, M. Abd-Elwahed, Y. Metwally, S. Arafat
: The objectives of the current study were to investigate the oppor-tunity of estimating soil salinity from hyperspectral data and identifying the most informative spectral zones for estimation. Electrical conductivity (EC) measurements of ninety topsoil samples (0–30 cm) collected fromToshka, Egypt, were used as data set. Analytical spectral device was employed to collect the reflectance spectral signatures of soil samples. Both linear regression and HSD Tukey’s analyses displayed that the SWIR1 and SWIR2 zones are the most suitable for soil salinity prediction while, blue, green and NIR were the wickedest. Moreover, EC estimation was better in case of lower soil salinity (0-2 dS m -1 ) than higher levels (8
当前研究的目的是研究从高光谱数据中估计土壤盐度的机会，并确定用于估计的最有信息的光谱区。从埃及toshka收集的90个表层土壤样品(0-30 cm)的电导率(EC)测量结果作为数据集。采用分析光谱装置采集土壤样品的反射光谱特征。线性回归和HSD Tukey的分析均表明，SWIR1和SWIR2区最适合预测土壤盐分，而蓝色、绿色和近红外区最不适合预测土壤盐分。土壤含盐量较低(0 ~ 2 dS m -1)时，EC的估算效果优于土壤含盐量较高(8
{"title":"CAPABILITIES OF HYPERSPECTRAL REMOTE SENSING DATA TO DETECT SOIL SALINITY","authors":"Abdelrahman Medhat Saleh, M. Abd-Elwahed, Y. Metwally, S. Arafat","doi":"10.21608/ajs.2021.87863.1402","DOIUrl":"https://doi.org/10.21608/ajs.2021.87863.1402","url":null,"abstract":": The objectives of the current study were to investigate the oppor-tunity of estimating soil salinity from hyperspectral data and identifying the most informative spectral zones for estimation. Electrical conductivity (EC) measurements of ninety topsoil samples (0–30 cm) collected fromToshka, Egypt, were used as data set. Analytical spectral device was employed to collect the reflectance spectral signatures of soil samples. Both linear regression and HSD Tukey’s analyses displayed that the SWIR1 and SWIR2 zones are the most suitable for soil salinity prediction while, blue, green and NIR were the wickedest. Moreover, EC estimation was better in case of lower soil salinity (0-2 dS m -1 ) than higher levels (8<dS m -1 ). Partial-least-squares-regression (ΡLSR) was employed to establish soil salinity prediction model using the training set of soil samples (n=75). The PLSR model was set up using the most informative wave bands (SWIR1 and SWIR2). The result showed that PLSR linear model gave a precise prediction of soil salinity (R 2 = 0.93).","PeriodicalId":8366,"journal":{"name":"Arab Universities Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46356317","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}
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