dissipation kinetics and the pre-harvest residue

Dissipation Behavior of a Mancozeb Residue

pesticides and might be the major reason for faster dissipation of residue in period 2 at location 2 as observed in the present study [21] Since a strong correlation co-efficient (0 9583 - 0 9927) was obtained between residue dissipation and time it was concluded that the dissipation rate followed the first order kinetics at both periods and in

DISSIPATION RATE AND RESIDUES OF ACETAMIPRID AND

The dissipation kinetic of the acetamiprid and iprodione in sweet cherry was determined by plotting residue concentration against time The half-life of pesticides calculated using the first order rate equation: Ct=C0e-kt where Ct represents the concentration of the pesticide residue at time t C0

Concentration and dissipation of chlorantraniliprole and

ABSTRACTTo study the dissipation rates and final residual levels of chlorantraniliprole and thiamethoxam in maize straw maize and soil two independent field trials were conducted during the 2014 cropping season in Beijing and Anhui Provinces of China A 40% wettable powder (20% chlorantraniliprole + 20% thiamethoxam) was sprayed onto maize straw and soil at an application rate

Dissipation kinetics and residues of amidosulfuron and

Oct 28 2015The dissipation kinetics remarkably followed the pseudo-first-order kinetic models The half-lives of amidosulfuron ranged from 1 30 to 7 99 days in wheat straw and from 2 33 to 18 58 days in soil whereas those of MCPA ranged from 0 48 to 6 74 days in wheat straw and from 3 10 to 22 22 days in soil at the three representative locations

Dissipation kinetics of imidacloprid residues in bhendi fruits

Dissipation kinetics of imidacloprid residues in bhendi fruits G Preetha J Stanley T Manoharan and S Kuttalam Abstract Imidacloprid was applied at 15 25 and 50 g a i ha-1 in bhendi and the level of residue was assessed to arrive the safe pre harvest waiting period

Dissipation kinetics of a new mixture formulation of

Dissipation kinetics of bispyribac-sodium and metamifop in rice as an effective measure to control the wide array of weeds in a single application As the mixture herbicide is newly introduced in the market there is no systematic study available on its persistence dissipation

[PDF] Dissipation Pattern of Amisulbrom in Cucumber under

Abstract The dissipation patterns of amisulbrom in cucumber under a greenhouse condition wasinvestigated to establish biological half-life and pre-harvest residue limit (PHRL) Amisulbrom residue in/oncucumber on the day of application under standard application condition was 0 15 mg kg −1 and decreased to0 06mg kg −1 after 5 days after treatment so that biological half-life calculated 3

Dissipation kinetics and risk assessment of fluopyram and

Residue dissipation in mango fruits followed first order rate kinetics and the half-life (DT 50) were 4 3–5 4 days for fluopyram and 3–3 8 days for tebuconazole Faster dissipation of the fungicides was observed after the fourth treatment which directly correlated to higher rainfall during that period

Dissipation and Residues of Lufenuron in Grape Fruits

The main objective of this study was to understand the residue and persistence behavior of lufenuron insecticide in grape fruit samples The residues were analyzed by HPLC and it dissipated in grape fruit following first order kinetics The average initial deposit of in grape fruit was observed to be 1 85mg kg -1 at single application rate

Dissipation of Fluopyram and Tebuconazole Residues in/on

after the second application Dissipation followed a linear trend with gradual degradation The residue reached 0 063 and 0 089 mg kg −1 on 7 th and 10 th day respectively on recommended and double dose In mature fruits of pomegranate and juice the residues of fluopyram were below quantitation limit (BQL) of 0 05 mg kg − 1 The residues of fluopyram were also estimated in oil at harvest

Dissipation kinetics and pre‐harvest residue limit of

Dissipation kinetics and pre‐harvest residue limit of pyriofenone in oriental melon (Cucumis melo Var makuwa) grown under regulated climatic conditions Hyung Suk Chung Natural Products Chemistry Laboratory College of Agriculture and Life Sciences Chonnam National University Gwangju Republic of

Dissipation Kinetics of Trifloxystrobin and Tebuconazole

Nov 13 2011Dissipation of trifloxystrobin and tebuconazole were studied following two applications of a combination formulation of Nativo 75 WG (trifloxystrobin 25% + tebuconazole 50%) 250 and 500 g ha−1 at 10 days interval Samples of chili were collected at 0 1 3 5 7 10 and 15 days after the last application Red chili and soil samples were collected after 20 days of last application

Measured and Modeled Residue Dynamics of Famoxadone and

We studied the dissipation of famoxadone and oxathiapiprolin in tomatoes grown using different kinetic curves in the area of Beijing in 2015 and 2016 Our results show that the most suitable model for two fungicides in 2015 and 2016 was first-order kinetic and second-order kinetic with the half-lives of 3 4 to 5 2 and 2 4 to 3 0 days respectively

Dissipation Kinetics of Benthiocarb in Water at Different

Water samples collected on 0 (2h) 3 7 15 30 45 60 and 90 days after treatments were processed for residue analysis of benthiocarb by GC-NPD capillary system In 60 days dissipation was 92 82-93 81 % at pH 4 0 89 12-90 63 % at pH 7 0 and 92 67-93 88 % at pH 9 2 in both treatments showing very little effect of pH on dissipation

Dissipation of four insecticides in tomato fruit using

Table 4 First-order kinetic equations half-lives and pre-harvest intervals (PHI) for studied insecticides DISCUSSION The results of insecticide residue analysis showed that the dissipation of insecticides follow the first order kinetics The correlation coefficient ranged from 0 83 to 0 97

Residue and risk assessment of fluopicolide and cyazofamid

Representative grape and soil samples were randomly gathered at pre-harvest intervals (PHI) of 7 10 and 14 days in each plot after last spraying The dissipation residue experiment in the supervised trial began at a time where the grape was halfway through its maturity with a value of 93 75 mg kg −1 (1 5 times the recommended dosage)

Residue and dissipation kinetics of toosendanin in cabbage

Residue and dissipation kinetics of toosendanin in cabbage tobacco and soil using IC-ELISA detection Food Chemistry ( IF 6 306) Pub Date : 2020-07-18 DOI: 10 1016/j foodchem 2020 127600 Hai Li Siqi He Guilin Liu Chao Li Zhiqing Ma Xing Zhang

Dissipation and Residues of Thiram in Potato and Soil

The residue levels of thiram during potato cultivation in open field were evaluated Thiram residues were determined by methylation derivation method with high performance liquid chromatography (HPLC) Wettable powder (WP) formulation containing 25% thiram was applied at 2320 g active gradient hm −2 (a i hm #x2212 2/sup) dosage for the dissipation study

Dissipation pattern and pre

Jun 01 2013After using maximum residue limits and mini- Method performance was assessed by evaluating quality mum dissipation constants k as determined through parameters such as selectivity limits of detection and min SPSS the first-order kinetics equation for pre-harvest quantification linearity recovery and reproducibility kmint residue limits

DISSIPATION RATE AND RESIDUES OF ACETAMIPRID AND

The dissipation kinetic of the acetamiprid and iprodione in sweet cherry was determined by plotting residue concentration against time The half-life of pesticides calculated using the first order rate equation: Ct=C0e-kt where Ct represents the concentration of the pesticide residue at time t C0

Dissipation Kinetics of Hexaconazole and Lambda

Dissipation Kinetics of Hexaconazole and Lambda-Cyhalothrin Residue in Soil and Potato Plant 2019 Abstract The dissipation behaviour and left-over residues of Hexaconazole fungicide and Lambda-Cyhalothrin pesticide in potato plant and soil were analysed by gas chromatography mass spectrometry (GC-MS) At fortified levels of 10 100 and

Residues and Dissipation Kinetics of Two Imidacloprid

the concentration and residue decline kinetics (i e dissipation rates and pre-harvest intervals) of two previously-synthesized IMI nanoformulations on P vulgaris seeds under field conditions Furthermore it compares all factors to those of IMI's commercial formulation (35% SC) Results from this study will be

Residue distribution safety evaluation processing factor

Oct 10 2019The results showed that the dissipation kinetics of bifenthrin and ethion can be described by a first-order kinetics model with a half-life (t 0 5) of 1 92 and 2 43 days for bifenthrin and 2 2 and 2 59 days for ethion at the low and high recommended application rates respectively For safe consumption of dates waiting periods of 12 and 28

Dissipation and Distribution Behavior of Azoxystrobin

The dissipation behavior and degradation kinetics of azoxystrobin carbendazim and difenoconazole in pomegranate are reported Twenty fruits/hectare (5 kg) were collected at random ensuring sample-to-sample relative standard deviation (RSD) within 20–25% Each fruit was cut into eight equal portions and two diagonal pieces per fruit were drawn and combined to constitute the laboratory