Effects of Pymetrozine and Tebuconazole with Foliar Fertilizer Through Mixed Application on Plant Growth and Pesticide Residues in Cucumber

2021 ◽  
Author(s):  
Lixiang Pan ◽  
Xiaoxiao Feng ◽  
Jing Jing ◽  
Jingcheng Zhang ◽  
Ming Zhuang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Pesticide Residues ◽  
Foliar Fertilizer

scholarly journals Response of Loropetalum chinense var. rubrum ‘Ruby’ to Foliar Applications of Micronutrient Fertilizers and Miticide

2008 ◽  
Vol 26 (4) ◽  
pp. 235-238
Author(s):  
Amy L. Shober ◽  
Gary Leibee ◽  
Moh Leng Kok-Yokomi
Keyword(s):  
Plant Growth ◽  
Significant Decline ◽  
Fertilizer Treatment ◽  
Copper Hydroxide ◽  
Foliar Fertilizer ◽  
Central Florida ◽  
Quality Ratings ◽  
Eriophyid Mites ◽  
Quality Response

Abstract Loropetalum chinense (also called Chinese Fringebush or Chinese Witch Hazel) is commonly used in the Florida landscapes. However, in recent years, there have been increasing reports and complaints of unexplained decline throughout Central Florida. The objective of this study was to evaluate the growth and quality response of declining L. chinense plants to foliar micronutrient and miticide applications. L. chinense ‘Ruby’ plants exhibiting significant decline symptoms were treated with eight foliar fertilizer treatments (High Cu, Low Cu, Kocide® 2000 [copper hydroxide], B, Mn, Zn, and Peters S.T.E.M.) and half of the plants also received two treatments of GardenTech Sevin Concentrate Bug Killer® (carbaryl, 22.5% AI). Plant growth was not influenced by miticide or fertilizer treatments. However, plants sprayed with Cu (i.e., Cu high, Cu low, and Kocide) had quality ratings, at 4 and 8 weeks after treatment, that were significantly higher than plants treated with other foliar fertilizers. Additionally, results indicated that there was no fertilizer treatment effect on mite populations. Failure of the miticide to enhance plant quality ratings, suggested that eriophyid mites were not associated with decline symptoms. The quality of declining landscape plantings of L. chinense ‘Ruby’ can be improved with the application of foliar Cu sprays.

scholarly journals Content Evaluation on Organochlorine Pesticides in Local Vegetables

2012 ◽  
Vol 69 (2) ◽  
Author(s):  
Crina MUREȘAN ◽  
Sonia SOCACI ◽  
Sevastița MUSTE
Keyword(s):  
Plant Growth ◽  
Petroleum Ether ◽  
Organochlorine Pesticides ◽  
Organochlorine Pesticide ◽  
Growth Regulator ◽  
Ethyl Ether ◽  
Pesticide Residues ◽  
Plant Growth Regulator ◽  
Florisil Column ◽  
Organochlorine Pesticide Residues

According to Codex Alimentarius, pesticides are considered as chemicals that prevent, suppress, destroy and repel some pests during manufacture, storage, transport or processing of food, feed and agricultural goods. These chemicals can also be used as plant growth regulator, as defoliant, agent inhibition. The purpose of this study was to evaluate the content of organochlorine pesticides in  home-grown vegetables products. The objectives were the establishment of the working matrices and the organochlorine pesticides determination in the matrices chosen by GS method. Due to the high cost of analysis, the vegetable matrix was consisted in 12 sample- lettuce and spinach samples grown in garden and  roots samples (carrots, parsley, parsnip and celery) from both home-grown production. Organochlorine pesticide residues were extracted from the sample with acetonitrile and petroleum ether, purified by passage through florisil column and eluted with a mixture of ethyl ether and petroleum ether. Concentrated eluate was subjected to gas chromatographic determination.In all examined samples, there were identified organochlorine pesticide residues with high residual, HCH, DDE, DDT, DDD, endosulfan, and heptachlor, some being above the maximum allowed by European legislation

scholarly journals Systems of organic farming in spring vetch I: Biological response of sucking insect pests

2015 ◽  
Vol 30 (2) ◽  
pp. 77-84
Author(s):  
Ivelina Nikolova ◽  
Natalia Georgieva
Keyword(s):  
Plant Growth ◽  
Organic Farming ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Farming System ◽  
Conventional Farming ◽  
Organic System ◽  
Foliar Fertilizer ◽  
Biological Insecticide ◽  
Organic Farming System

Four systems of organic farming and a conventional farming system were studied over the period 2012-2014. The organic system trial variants included: I - an organic farming system without any biological products used (growth under natural soil fertility) - Control; II - an organic farming system involving the use of a biological foliar fertilizer and a biological plant growth regulator (Polyversum+Biofa); III - an organic farming system in which a biological insecticide (NeemAzal T/S) was used; IV - an organic farming system including a combination of three organic products: the foliar fertilizer, the plant growth regulator and the bioinsecticide (Polyversum+Biofa+NeemAzal T/S). Variant V represented a conventional farming system in which synthetic products were used in combination (foliar fertilizer, plant growth regulator and insecticide: Masterblend+Flordimex 420+Nurelle D). Treatment of vetch plants with the biological insecticide NeemAzal in combination with Biofa and Polyversum resulted in the lowest density of sucking pests, compared to all other organic farming methods tested (i.e. without NeemAzal, with NeemAzal alone, and its combination with Biofa and Polyversum). The greatest reduction in pest numbers during the vegetation period in that variant was observed in species of the order Thysanoptera (36.0-41.4%), followed by Hemiptera, and the families Aphididae (31.6-40.3%) and Cicadellidae (27.3-28.6%). This combination showed an efficient synergistic interaction and an increase in biological efficacy as compared to individual application of NeemAzal. The highest toxic impact was found against Thrips tabaci, followed by Acyrthosiphon pisum. An analysis of variance regarding the efficacy against the species A. pisum, E. pteridis and T. tabaci showed that type of treatment had the most dominant influence and statistically significant impact.

Effect of foliar fertilizer Campofort Special-Zn and plant growth regulator Rastim 30 DKV on growth, yield components and protein content in mung bean plants

2010 ◽  
Vol 58 (1) ◽  
pp. 37-47
Author(s):  
M. Henselová ◽  
Ľ. Slováková
Keyword(s):  
Plant Growth ◽  
Protein Content ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Mung Bean ◽  
Yield Components ◽  
Seed Protein ◽  
Growth Yield ◽  
Seed Protein Content ◽  
Foliar Fertilizer

The effect of the foliar fertilizer Campofort Special-Zn (CSZn) and the plant growth regulator Rastim 30 DKV (RM) on growth, yield parameters and seed protein content was studied in mung bean [ Vigna radiata (L.) Wilczek] plants grown under greenhouse and field conditions. CSZn at a dose of 10 l per ha, and RM at doses of 3, 30 and 60 g per ha were applied alone or in combination (before flowering and 14 days after first application). The initiation of flowering and ripening processes and the chlorophyll content Chl ( a + b ) were evaluated. At harvest, total yield and yield components (number of pods per plant, seed number per pod, single pod mass, seed mass per pod), germination of seeds and seed protein content were determined. RM applied alone induced intensive flowering, increased the number of pods and yield components per plant, accelerated the ripening of the pods, increased the Chl content in the leaves and delayed senescence in treated plants. The mixture of RM with CSZn (60 g + 10 l per ha) and RM alone at a dose of 60 g per ha had a retarding and morphogenic effect on the growth of treated plants and also decreased the protein content and germination of the seeds. The best results for all studied parameters were achieved in the field at a dose of 30 g RM + 10 l CSZn and under greenhouse conditions at a dose of 3 g RM + 10 l CSZn.

Pesticide Residues in Total Diet Samples

1964 ◽  
Vol 47 (5) ◽  
pp. 815-821
Author(s):  
S Williams
Keyword(s):  
Gas Chromatography ◽  
Plant Growth ◽  
Paper Chromatography ◽  
Growth Regulators ◽  
Pesticide Residues ◽  
Organophosphate Pesticide ◽  
Total Diet ◽  
Chlorinated Organic ◽  
Organic Pesticides ◽  
Chlorinated Organic Pesticides

Abstract Total diet samples collected since August 1962 were analyzed for the presence of chlorinated organic pesticides, parathion, and 2,4-D types of herbicides and plant growth regulators. Chlorinated pesticide residues were identified by paper, gas-liquid, thinlayer, and microcoulometric gas chromatography. Parathion residues were identified by polarography and confirmed by paper chromatography. Organophosphate pesticide residues were noted in a few samples by paper chromatography. No herbicides were detected in any samples.

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