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Effect of Combined Foliar Spray on Heavy Metals Accumulation in Facility Fruit Vegetables
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作者 Huiwei ZHAO Jumei LI +3 位作者 Xueping SHI Yiming LIU Chuan LU Shuo SUN 《Agricultural Biotechnology》 CAS 2020年第5期32-36,共5页
In order to explore the effects of combined foliar spray which was prepared from potassium fulvate and Zn on heavy metal accumulations in three kinds of facility fruit vegetables,cucumber,tomato and white melon,the fo... In order to explore the effects of combined foliar spray which was prepared from potassium fulvate and Zn on heavy metal accumulations in three kinds of facility fruit vegetables,cucumber,tomato and white melon,the foliar spray was applied from fruit setting to maturation.The results showed that the combined foliar spray significantly promoted the absorption of Zn and Cu in the three fruit vegetables,blocked the absorption of Cr,As and Pb in cucumber,significantly blocked the absorption of Cd in white melon,blocked the absorption of Pb in white melon,and showed a tendency of blocking the absorption of heavy metals Cd and As in tomato. 展开更多
关键词 foliar spray Facility fruit vegetables Accumulation of heavy metals IMPACT
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Efficient selenite reduction and chromium resistance by multiple pathways in Bacillus wiedmannii ES2-45 and Se-biofortification in rice by foliar application
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作者 Fang Ma Tiantian Zhao +4 位作者 Jiayi Guo Huimin Cui Yiting Wang Xiong Luo Shixue Zheng 《Journal of Environmental Sciences》 2025年第10期660-670,共11页
Microbial selenite(Se(Ⅳ)) reduction to elemental selenium nanoparticles(SeNPs) and chromate(Cr(Ⅵ)) remediation constitute effective detoxification processes. The strain Bacillus wiedmannii ES2-45 can efficiently red... Microbial selenite(Se(Ⅳ)) reduction to elemental selenium nanoparticles(SeNPs) and chromate(Cr(Ⅵ)) remediation constitute effective detoxification processes. The strain Bacillus wiedmannii ES2-45 can efficiently reduce 5 mmol/L Se(Ⅳ) into SeNPs over 14 h and 1 mmol/L Cr(Ⅵ) within 36 h. Proteomic analysis and qRT-PCR revealed that reductases, including dithiol oxidoreductase(DsbA), Fe-S biosynthesis domain-containing protein(Fes),and aldose-6-phosphate reductase(Aldo), and bacillithiol(BSH) were involved in Se(Ⅳ) reduction. Heterologous expression further confirmed the Se(Ⅳ)-reducing function of three genes and enhanced the Se(Ⅳ) and Cr(Ⅵ) resistance ability. Moreover, the difference between Se(Ⅳ) treatments and controls both intra-and extra-cellular BSH concentration per biomass indicated that BSH contributes to Se(Ⅳ) reduction. Selenium-fortified rice was obtained by foliar spray of SeNPs synthesized by the strain ES2-45. To the best of our knowledge, DsbA and Aldo reductase were firstly verified for the role in Se(Ⅳ) reduction and Cr(Ⅵ)resistance. Importantly, it is a promising strategy that B. wiedmannii ES2-45 is served as an efficient bacterium for SeNP synthesis, selenium biofortification and heavy metal bioremediation. 展开更多
关键词 SeNP synthesis PROTEOME Selenite reductase CHROMATE Bacillithiol foliar spray
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Wheat Yield Response to Foliar Fungicide Application against Leaf Rust Caused by Puccinia triticina
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作者 Krishna Dev Joshi Ghulam Ullah +6 位作者 Attiq Ur Rehman Muhammad Makky Javaid Javed Ahmad Makhdoom Hussain Angela Pacheco Ibni Amin Khalil Amanullah Baloch 《Journal of Agricultural Science and Technology(A)》 2017年第3期160-168,共9页
A study was conducted on reducing the yield loss of wheat due to leaf rust caused by Puccinia triticina with foliar application of fungicides during the 2014-2015 and 2015-2016 growing seasons at the Wheat Research In... A study was conducted on reducing the yield loss of wheat due to leaf rust caused by Puccinia triticina with foliar application of fungicides during the 2014-2015 and 2015-2016 growing seasons at the Wheat Research Institute in Faisalabad, Pakistan. Three fungicides: Folicur (tebuconazole) at 300 mL/ha, Nativo (tebuconazole + trifloxystrobin) at 300 g/ha and Tilt (propiconazole) at 500 mL/ha were applied single or two times to Morocco and Sehar-06 wheat varieties used in the trial. The trial plots were first sprayed at the Zadok's scale (ZS) 3 stage and second sprayed between ZS 4.3 and 5.4 stages. The greenness of the trial crop was measured using GreenSeeker. Foliar application of fungicides significantly reduced the loss of grain yield and 1,000-grain weight (TGW) of wheat due to leaf rust in comparison to the control without fungicides application. Of the three fungicides, two times spray of Nativo reduced the grain yield loss of leaf rust susceptible mega wheat variety Sehar-06 by 45%-56% and the loss of TGW by 42%, also giving the highest marginal return in the trial. Single application of Nativo was equally effective as two times spray of Folicur in reducing the loss of wheat grain yield. Two times spray of Folicur was found to be the second choice of fungicide for reducing the yield loss of wheat. The research identified suitable fungicides for reducing the yield loss of wheat due to leaf rust and also generated important scientific knowledge required to manage a sudden outbreak of leaf rust to ensure food security. 展开更多
关键词 Wheat variety leaf rust yield loss yield response foliar spray of fungicide resistance breeding.
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Zinc nutrition optimization for better cotton productivity on alkaline calcareous soil
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作者 ASHRAF M. QAMAR F. +4 位作者 MEHRAN M. MASOOD S. SHAHZAD S.M. JAVED M.S. AZHAR M.T. 《Journal of Cotton Research》 2025年第2期193-204,共12页
Background Zinc(Zn),being the most deficient micronutrient,can largely limit plant growth and development on alkaline calcareous soil.Crop species and varieties within species differently require Zn for optimum produc... Background Zinc(Zn),being the most deficient micronutrient,can largely limit plant growth and development on alkaline calcareous soil.Crop species and varieties within species differently require Zn for optimum productivity.The current study aimed to optimize Zn level and mode of application for better growth,yield,and fiber quality of cotton(Gossypium hirsutum L.).The experimental plan comprised a control group with no Zn application,three Zn levels through soil application,i.e.5 mg·kg^(-1)(SZn5),10 mg·kg^(-1)(SZn10),and 15 mg·kg^(-1)(SZn15),two levels of foliar application including 0.5%(FZn0.5)and 1%(FZn1)Zn solution,and various combinations of soil plus foliar application.Two cotton cultivars,CIM-663(Bt)and Cyto-124(non-Bt)were used,and each treatment was replicated thrice.Results Zinc nutrition caused a significant(P≤0.05)improvement in growth,yield,physiological,and fiber quality characteristics of both cotton cultivars.All levels and modes of Zn application were found effective in improving cotton productivity on alkaline calcareous soil.However,integrated soil application and foliar spray showed superiority over sole soil or foliar application.Among different treatments,SZn15+FZn1 caused the highest improvement in most of the observed growth and yield traits.The said treatment maximally increased the leaf Zn concentration by 270.5%and 218.4%with a subsequent increase in plant height 23.2%and 28.0%,monopodial branches 40.7%and 42.1%,sympodial branches 37.2%and 35.2%,seed cotton yield 32.5%and 36.6%,and lint yield 30.0%and 34.6%in CIM-663 and Cyto-124,respectively,compared with the control.SZn15+FZn1 also caused the highest increase in relative water contents 32.6%and 22.4%,chlorophyll contents 92.0%and 67.1%,and stomatal conductance 112.8%and 100.8%in CIM-663 and Cyto-124,respectively,compared with the control.Among the fiber quality characteristics,fiber fineness was maximally improved by 19.7%and 15.9%in CIM-663 and Cyto-124,respectively,with SZn15+FZn1 compared with the control.Leaf Zn concentration was positively correlated with fiber length(R2=0.7173),fiber strength(R2=0.5483),and fiber fineness(R2=0.6379)of both cotton cultivars grown with different levels and application modes of Zn.The benefit-cost ratio was remarkably improved with Zn nutrition,and the highest value of 1.64 was found in CIM-663 at SZn10+FZn1 and SZn15+FZn1.Conclusion The plant growth,physiological,yield,and fiber quality characteristics of cotton cultivars were significantly improved with Zn supply at different levels and modes of application.SZn15+FZN1 could be recommended to get optimum seed cotton yield and fiber quality of cotton on alkaline calcareous soil. 展开更多
关键词 Boll weight CHLOROPHYLL Fiber quality foliar spray Monopodial branches PHOTOSYNTHESIS Seed cotton yield Sympodial branches
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Arabidopsis under ammonium over-supply: Characteristics of ammonium toxicity in relation to the activity of ammonium transporters 被引量:2
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作者 Yi LI Jinyan ZHOU +2 位作者 Dongli HAO Shunying YANG Yanhua SU 《Pedosphere》 SCIE CAS CSCD 2020年第3期314-325,共12页
Because of highly intensive farming practices, crop plants could suffer relatively long terms of ammonium(NH4+) excess stress introduced by overdose application of nitrogen fertilizers. However, the lack of sufficient... Because of highly intensive farming practices, crop plants could suffer relatively long terms of ammonium(NH4+) excess stress introduced by overdose application of nitrogen fertilizers. However, the lack of sufficient understanding of plant responses to NH4+excess stress impairs the detection of effective solutions to this problem. The present work examined the biological influences of over-supplied NH4+in Arabidopsis thaliana using two mutant lines each with an ammonium transporter(AMT) gene(AtAMT1;1 or AtAMT1;3) knocked out. Our results indicated that lacking one of the major components of root NH4+-absorbing systems significantly alleviated the toxicity effects on Arabidopsis plants by reducing the accumulation of free NH4+, suggesting that persistent absorption of NH4+through AMT was the main cause of excessive accumulation of free NH4+in the plants. Shading treatment led to a reduced transpirational driving force and thereby constrained the accumulation of toxic NH4+in the plants, finally resulting in higher NH4+-promoted growth in the wild type(WT). Under the shading treatment, the amt1;1 and amt1;3 mutant plants acquired insufficient NH4+and showed reduced growth when compared with the WT. Furthermore, the foliar application of sucrose notably alleviated the inhibitory effects on plant growth in the WT but had no effect on either the amt1;1 or amt1;3 mutant plants, indicating that carbon scarcity associated with NH4+excess is probably a major cause of NH4+toxicity in plants. Accordingly,increasing carbon source could be a potentially effective approach that alleviates the inhibition caused by NH4+excess and increases nitrogen use efficiency under NH4+over-supply. 展开更多
关键词 carbon and nitrogen synergy nitrogen use efficiency stress mechanism sucrose foliar spray toxicity alleviation transporter knockout
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Influence of Nitrogen Levels and Application Methods on Yield and Quality of Sorghum
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作者 A.RASHID R.U.KHAN H.ULLAH 《Pedosphere》 SCIE CAS CSCD 2008年第2期236-241,共6页
A field study was conducted for two years at the Arid Zone Research Institute, Dera Ismail Khan, Pakistan, to determine the optimum level of nitrogen and efficient application method in the production of sorghum (Sor... A field study was conducted for two years at the Arid Zone Research Institute, Dera Ismail Khan, Pakistan, to determine the optimum level of nitrogen and efficient application method in the production of sorghum (Sorghum bicolor L.). Using four levels of nitrogen, i.e., 0, 60, 90, and 120 kg ha^-1, and two different application methods (soil application and foliar spray), the experiment was laid out in a split-plot design, where the main plots were used to determine the effective method of application and the subplots were used to detect the influence of N levels on the grain yield. The average data obtained after two years of study indicated an increase in the grain yields with an increase in N levels irrespective of the method used of N application. The grain yield increased from 2.92 to 5.61 t ha^-1 in the plots that were treated with 90 kg N ha^-1 compared with the control plots. Quadratic regression analysis showed that the increase in the yield was higher at the lower levels of N compared with the succeeding higher levels. The soil application method, producing an average grain yield of 4.79 t ha^-1, was found to be superior to the foliar spray method with an average grain yield of 4.56 t ha^-1. The protein content of the grain showed a linear increase with N application, attaining the maximum at 120 kg N ha^-1 in both the methods of N application. In addition, compared with the method of soil application, higher crude protein contents were observed using the method of foliar spray at all N levels. 展开更多
关键词 foliar spray grain yield N level protein content soil application
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Efficacy of Beneficial Fungi Isolates in Solanum lycopersicum L. Protection against Lepidopteran Insects through a Leaf Inoculation Technique
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作者 Joelle Toffa Elie Ayitondji Dannon +4 位作者 Yeyinou Laura Estelle Loko Hervé Bokossa Josky Adikpeto Appolinaire Adandonon Manuele Tamò 《Advances in Microbiology》 CAS 2023年第2期89-105,共17页
Helicoverpa armigera is a key insect pest of tomatoes reducing drastically yields. The effect of the endophytic colonization of tomato plants by Beauveria bassiana using leaf spray as an inoculation method on damage a... Helicoverpa armigera is a key insect pest of tomatoes reducing drastically yields. The effect of the endophytic colonization of tomato plants by Beauveria bassiana using leaf spray as an inoculation method on damage and survival of H. armigera was assessed in a screen house. Two B. bassiana isolates (Bb 115 and Bb 11) and two tomato varieties (a local variety Tounvi and an improved variety Padma) were included in the study. The adaxial and abaxial leaf surfaces were sprayed at a concentration of 10<sup>7</sup> conidia/ml and 10<sup>9</sup> conidia/ml for each isolate and each of the two tomato varieties. Thirty days after inoculation, five discs of tomato leaf and tomato root were cut for each isolate, each concentration per isolate and for each variety. The samples were incubated at room temperature (28°C ± 2°C) and periodically checked for fungal growth. Larval survival was checked and a damage assessment was done on tomato flowers and the leaves. The results show that the lowest Mean Survival Times (MSTs) were recorded on larvae feeding on plants inoculated with Bb 11 (4.2 ± 0.8 days against 11.5 ± 0.2 days for control). Compared to the other treatments, low damage rates of the flowers of the improved variety inoculated with Bb 11 at 10<sup>9</sup> conidia/ml were recorded from the 6th Day After Inoculation (DAI). This rate remains low until the end of treatment. Overall flower damage was lower than leaf damage. The results showed large differences in pathogenicity, with most endophytic isolate belonging to Bb 11 when inoculated at 10<sup>9</sup> conidia/ml using the leaf spraying technique. Data were discussed with regard to the use of endophytism B. bassiana in an integrated tomato pest control approach. 展开更多
关键词 Tomato INSECT Beauveria bassiana foliar spray ENDOPHYTIC Pest Management
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Roles of different fertilizer management practices on mulberry leaf yield and quality 被引量:2
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作者 Faruque Ahmed Rafia Sultana +2 位作者 Oli Ahmed Md.Akhtaruzzaman Md.Toufiq Iqbal 《International Journal of Agricultural and Biological Engineering》 SCIE EI CAS 2017年第5期104-114,共11页
Effects of fertilizer management practices on leaf yield and quality of mulberry plant are important for sustainable mulberry plant production.This study was undertaken to improve the growth,yield and biochemical cont... Effects of fertilizer management practices on leaf yield and quality of mulberry plant are important for sustainable mulberry plant production.This study was undertaken to improve the growth,yield and biochemical contents in an instant available form in mulberry plant through different fertilizer management practices.There were four fertilizer management practices like control(CT),basal(BS),urea+magic growth(UM)and basal+urea+magic growth(BUM)were applied on mulberry plant(Morus SPP.).Results of this investigation revealed that among the various fertilizer treatments on the foliar application of(3 g urea+3 mL magic growth)per liter water with BSRTI recommended BS of NPK performed well in respect of growth parameters and biochemical constituents.The highest 10 leaf area(638.64 cm^(2)),leaf number per branch(50),total leaf weight per plant(785.64 g),node per meter(28.67),specific leaf weight(0.005817 g/cm^(2)),length of longest shoot(173.25 cm)and total leaf yield per hectare per year(41610 kg)were noticed in BUM treatment followed by UM,BS and CT treatments.Further the highest moisture(74.38%),moisture retention capacity(33.31%),total mineral(12.10%),total sugar(3.99%),reducing sugar(4.05%),crude protein(21.01%),starch(9.72%)and soluble carbohydrate(11.41%)were also recorded in BUM treatment as compare to UM,BS and CT treatments.The outcome of research implies that among the four fertilizer management practices foliar spray of(3 g urea+3 mL magic growth)per liter water with BSRTI recommended BS dose of NPK performed well and successfully augments the productivity and biochemical constituents of mulberry plant. 展开更多
关键词 liquid fertilizer SILKWORM foliar spray PHOTOSYNTHESIS PRUNING
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