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journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences最新文献

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Evaluating the Effect of the Economic Factors that Affect the Crop Price on the Continuation of Agriculture in Wadi Al-Dawasir, Saudi Arabia 评估影响作物价格的经济因素对沙特阿拉伯瓦迪达瓦西尔地区农业延续的影响
journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences Pub Date : 2019-03-10 DOI: 10.4197/met.28-1.8
Abdulaziz M. Alqarawy
{"title":"Evaluating the Effect of the Economic Factors that Affect the Crop Price on the Continuation of Agriculture in Wadi Al-Dawasir, Saudi Arabia","authors":"Abdulaziz M. Alqarawy","doi":"10.4197/met.28-1.8","DOIUrl":"https://doi.org/10.4197/met.28-1.8","url":null,"abstract":"The aim of this study is to evaluate the impact of the economic factors that affect the price of crops on the continuation of agriculture in Wadi Al-Dawasir. A field survey is conducted covering 39 farms, including all crops. A random stratified sampling method is used to collect the data. The results showed that farmer pays for groundwater between 0.13 to 0.41 SR/M3. The study concluded that lifting the governmental subsidies on diesel will stop the cultivation of wheat and Rhodes and will affect the cultivation of Alfalfa. However, vegetable and date crops will be less affected due to their high profit.","PeriodicalId":195574,"journal":{"name":"journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132476597","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}
引用次数: 0
Quality and Biochemical Changes of ‘Grand Nain’ Bananas during Shelf Life “大香蕉”保质期内的品质和生化变化
journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences Pub Date : 2019-02-20 DOI: 10.4197/met.28-1.5
Md. Arfan Ali
{"title":"Quality and Biochemical Changes of ‘Grand Nain’ Bananas during Shelf Life","authors":"Md. Arfan Ali","doi":"10.4197/met.28-1.5","DOIUrl":"https://doi.org/10.4197/met.28-1.5","url":null,"abstract":". Quality attributes, antioxidant compounds, free radical scavenging capacity (FRSC, DPPH IC50 value) and enzymes activities of ‘Grand Nain’bananas were investigated during shelf life at 20±2oC and 60-70% RH for 7 days. Weight loss, peel color and browning indices increased while, pulp firmness, titratable acidity (TA), pH and membrane stability index (MSI) decreased during shelf life. Total soluble solid (TSS) concentration increased up to day five then remained stable whereas, vitamin C increased ranged from 5.8 to 8.2 mg 100g-1 fresh weight (FW) during the first two days and then decreased. Total phenols concentration in both peel and pulp increased ranged from 0.19 to 1.64 gkg-1 and 0.17 to 0.59 gkg-1 FW, respectively during shelf life. Total flavonoids firstly increased, remained stable until day five then, decreased in both peel and pulp. It ranged from 0.05 to 0.21 gkg-1 FW and 0.03 to 0.19 gkg-1 FW in peel and pulp, respectively. Both total phenols and flavonoids concentrations were higher in peel than pulp. FRSC in peel remained stable until day five then, sharply decreased (higher DPPH IC50 values) and ranged from 3.83 to 19.43 IC50 values. While, in pulp it decreased (higher DPPH IC50 values) during shelf life and ranged from 4.1 to 13.3 IC50 values. Polyphenoloxidase (PPO), peroxidase (POD), polygalacturornase (PG), xylanase and ?-amylase activities in peel and pulp greatly varied during shelf life.","PeriodicalId":195574,"journal":{"name":"journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133067222","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}
引用次数: 3
Application of Silica Nanoparticles Induces Seed Germination and Growth of Cucumber (Cucumis sativus) 纳米二氧化硅诱导黄瓜种子萌发和生长的研究
journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences Pub Date : 2019-02-20 DOI: 10.4197/met.28-1.6
H. El-Ramady
{"title":"Application of Silica Nanoparticles Induces Seed Germination and Growth of Cucumber (Cucumis sativus)","authors":"H. El-Ramady","doi":"10.4197/met.28-1.6","DOIUrl":"https://doi.org/10.4197/met.28-1.6","url":null,"abstract":"Five rates of nano-silica (NS) suspensions (0, 100, 200, 300 and 400 mg L-1) were used to study their effects on seed germination and growth development of cucumber (Cucumis sativus). The rate of 200 mg L-1 significantly increased final germination%, germination speed, vigor index, and germination index by 28.7, 70.3, 46.7 and 68.8 %, respectively, compared to untreated seeds. However, it reduced the mean germination time by 31.7%. Similarly, 200 mg L-1 NS had the highest fresh and dry weight of germinant. However, all NS treatments enhanced the seed germination and growth development in comparison to control.","PeriodicalId":195574,"journal":{"name":"journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123535246","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}
引用次数: 16
Biological Control of the Weedy Plant (Rumex crispus) at the Seedling Growth Stage by the Green Dock Beetle (Gastrophysa viridula) 绿船坞甲虫(Gastrophysa viridula)对杂草植物苗期的生物防治
journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences Pub Date : 2019-02-14 DOI: 10.4197/met.28-1.3
Khalid S. Alshallash
{"title":"Biological Control of the Weedy Plant (Rumex crispus) at the Seedling Growth Stage by the Green Dock Beetle (Gastrophysa viridula)","authors":"Khalid S. Alshallash","doi":"10.4197/met.28-1.3","DOIUrl":"https://doi.org/10.4197/met.28-1.3","url":null,"abstract":"In four glasshouse experiments, the effectiveness of the adult green dock beetle Gastrophysa viridula (Coleoptera: Chrysomelidae), at the effective number of applied individuals, for use as a biological control agent of curled dock, Rumex crispus (Polygonaceae) were studied. The feeding of the beetle was investigated at four different numbers of beetle (0, 1, 2, 3) and at four seedling growth stages of the plant, defined by the average of leaf area per plant (1-1.22 , 2-4.45, 3-11.56, and 4-71.52 cm2/plant). Grazing by one, two or three dock beetles did not result in a significant reduction in dock dry weight or shoot numbers at the youngest growth stage. However, both at later seedling growth stages were significantly affected (P ? 0.0001), at any beetles number. The increase of beetle numbers caused nonsignificant increased effect, in some trials, confirming the impact of a single beetle. Three months after beetle grazing, dock seedlings of first, second and third growth stages were not able to regrow, however, some plants at the 4th growth stage, re-emerged. This suggested that the highest effect of beetle's feeding occurs on the early seedling stages. Statistical analysis showed a positive correlation (0.77) between dry weight and shoot number at all the four seedling growth stages, thus confirming the impact of the beetle on both the dry weight and shoot numbers. Combining beetle grazing with other control methods at older dock seedling stages could, therefore, provide better suppression","PeriodicalId":195574,"journal":{"name":"journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133575687","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}
引用次数: 0
Performance of Sugar Beet (Beta vulgaris L.) Cultivars under the Intercropping with Clover in Arid Land Conditions 甜菜的生产性能干旱区三叶草间作栽培品种研究
journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences Pub Date : 2019-02-01 DOI: 10.4197/met.28-1.2
F. S. El-Nakhlawy
{"title":"Performance of Sugar Beet (Beta vulgaris L.) Cultivars under the Intercropping with Clover in Arid Land Conditions","authors":"F. S. El-Nakhlawy","doi":"10.4197/met.28-1.2","DOIUrl":"https://doi.org/10.4197/met.28-1.2","url":null,"abstract":"This investigation was carried out at Hada AL-Sham Agricultural Research Station, KAU to study the behavior of three sugar beet cultivars (Farida, Dita and Heros) under three intercropping systems (sugar beet sole, 1sugar beet: 2 clover and 1sugar beet:3 clover rows) during 2016-208 seasons. Intercropping systems produced higher root and sucrose yield/ha more than sole plantation. In addition, Farida cv was the highest in root and sucrose yield compared with the other cultivars. Farida cv under the1sugar beet: 3clover intercropping system produced the highest sucrose yield/ha (4.45t and 7.04 t/ha in the 1st and 2nd seasons, respectively).","PeriodicalId":195574,"journal":{"name":"journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121226343","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}
引用次数: 1
Molecular Detection of Begomoviruses Infecting Some Vegetable Crops in Saudi Arabia 沙特阿拉伯部分蔬菜作物感染begomovirus的分子检测
journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences Pub Date : 2019-01-20 DOI: 10.4197/met.28-1.4
K. Alhudaib
{"title":"Molecular Detection of Begomoviruses Infecting Some Vegetable Crops in Saudi Arabia","authors":"K. Alhudaib","doi":"10.4197/met.28-1.4","DOIUrl":"https://doi.org/10.4197/met.28-1.4","url":null,"abstract":"Begomoviruses have a huge impact on crop production worldwide. Investigations of begomviruses in four vegetable crops namely cucumber, squash, tomato, and watermelon were conducted by visual symptoms and molecular analysis using PCR with universal primers for begomoviruses. Obtained sequencing results of the core Coat Protein confirmed the presence of three already reported begomoviral species. TYLCV was detected on tomato samples exhibiting leaf curling and yellowing. Squash and greenhouse-grown cucumber plants were infected with the Oman strain TYLCV-OM. Watermelon chlorotic stunt virus (WmCSV) isolates were detected in watermelon and greenhouse cucumbers. The begomoviral species ToLCPMV shared 99% identity with the Iranian isolates that are known to be very destructive. Integrated pest management should be implemented against whitefly (Bemisia tabaci) to prevent the spread of begomoviruses on vegetable crops.","PeriodicalId":195574,"journal":{"name":"journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132747085","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}
引用次数: 0
Response of Different Sugar Beet Cultivars to Nitrogen Fertilizer Rates under the Arid Land Conditions 旱地条件下不同甜菜品种对施氮量的响应
journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences Pub Date : 2019-01-01 DOI: 10.4197/met.28-1.1
F. S. El-Nakhlawy
{"title":"Response of Different Sugar Beet Cultivars to Nitrogen Fertilizer Rates under the Arid Land Conditions","authors":"F. S. El-Nakhlawy","doi":"10.4197/met.28-1.1","DOIUrl":"https://doi.org/10.4197/met.28-1.1","url":null,"abstract":"This study was conducted during 2016-2018 at the Agriculture Research Station of King Abdulaziz University at Hada Al-Sham, Saudi Arabia. The study aimed to evaluate three sugar beet cultivars (Farida, Dita and Heros) under three nitrogen fertilizer rates (100, 200 and 300 kg N/ha). As nitrogen fertilizer rate increased root yield, yield components, sucrose (%) and yield significantly increased in both seasons. Fresh root yield under 300 kg N/ha was the highest in both seasons. Farida cv. was the highest in root yield (60.62 t/ha and 97.00 t/ha) and sucrose yield (4.15 and 6.95 t/ha) in both seasons, respectively.","PeriodicalId":195574,"journal":{"name":"journal of King Abdulaziz University - Meteorology, Environment and Arid Land Agriculture Sciences","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128061064","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}
引用次数: 0
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