Zohaib Ali - Academia.edu (original) (raw)

Papers by Zohaib Ali

Research paper thumbnail of Optimization of CdS-free non-toxic electron transport layer for Sb2S3-based solar cell with notable enhanced performance

Journal of Computational Electronics

Research paper thumbnail of The Role of Intellectual Capital in Innovation With the Mediation Effect of Organizational Capital An Empirical Sutdy of Pakistani Banks

Zenodo (CERN European Organization for Nuclear Research), Dec 31, 2021

Research paper thumbnail of Macro Determinants of Technological Progress in Agriculural Sector of Pakistan

Research paper thumbnail of Organi̇zasyonel Büyümeni̇n Açiklanmasinda Teknoloji̇k Ve Pazarlama İnovasyonu

DergiPark (Istanbul University), Mar 31, 2019

Purpose-Purpose of this research paper is to check the impact of technological and marketing inno... more Purpose-Purpose of this research paper is to check the impact of technological and marketing innovation on organizational growth and to compare impact of both., Design-Survey based technique has been adopted for the study. Technological and marketing innovation are measured by an adopted scale, including elements of innovation as technology and marketing, and organizational growth. Data for the study was taken from 89 respondents from glass industry in Peshawar, Pakistan. Findings-Findings of the study suggest that technological innovation and marketing innovation has significant impact on organizational growth.

Research paper thumbnail of Optimization of Electrical Performance of Defected n+-p-p+ Solar Cell with CdS/BaSi2/Cu2O Heterostructure Using SCAPs 1D

Present study investigates the performance of BaSi2 based BSF structure solar cell. SCAPS 1D simu... more Present study investigates the performance of BaSi2 based BSF structure solar cell. SCAPS 1D simulator has been employed to investigate the heterostructure solar cell. To decrease the recombination loss due to minority carrier, a new configuration is proposed by inclusion of the p-type cuprous oxide (Cu2O) as BSF layer. The Cu2O BSF layer width varying in range 0.1 to 0.4 µm to analyze the feasibility of device for optimum performance. The anticipated structure consists of ZnO/CdS/BaSi2/Cu2O layers and offers the maximum efficiency of above 24%. Parameters for example open circuit voltage (Voc), short-circuit current density (Jsc), fill factor (FF), conversion efficiency (η) and quantum efficiency (QE) of the device have been analyzed graphically. The optimized structure may have significant impact on future development of advanced photovoltaic devices.

Research paper thumbnail of Impact of Amorphous and Crystalline Tungsten Trioxide (WO3) Thin Films as an Antireflection Material for Silicon (c-Si) Solar Cells

Journal of Electronic Materials

Research paper thumbnail of Contrast utilization patterns during CTO-PCI: Insights from the PROGRESS-CTO registry

Research paper thumbnail of Use of the gaia guidewires in a contemporary multicenter registry of chronic total occlusion percutaneous coronary intervention

Research paper thumbnail of Complications Associated with Transulnar Approach in Patients undergoing Percutaneous Coronary Interventions

Pakistan Journal of Medical and Health Sciences, 2021

Aim: To examine the prevalence of complications related with transulnar approach in patients unde... more Aim: To examine the prevalence of complications related with transulnar approach in patients undergoing elective percutaneous coronary interventions. Study Design: Cross-sectional/observational study. Place & Duration: The study was conducted at cardiology department of Cat A Hospital Batkhela and Fauji Foundation Hospital Peshawar for six months duration from January 2020 to December 2020. Methods: One hundred and eighteen patients of both genders with ages 20 to 75 years who underwent percutaneous coronary interventions were included. Patients’ detailed demographics including age, sex, BMI and com-morbidities were recorded after taking informed written consent from all the patients. All the patients had percutaneous coronary procedure through transulnar approach and periprocedural complications were examined. Data was analyzed using SPSS 24.0. Results: Out of 118 patients 85 (72.03%) were males and 33 (27.97%) were females with mean age of 55.74±11.71 years. Mean BMI was 28.09±7.3...

Research paper thumbnail of Using Sport Education to Deliver a Powerlifting University Physical Activity Course

Journal of Physical Education, Recreation & Dance, 2021

The purpose of this article is to introduce and provide suggestions for the organization of a uni... more The purpose of this article is to introduce and provide suggestions for the organization of a university powerlifting physical activity course in which the sport education model was implemented. The powerlifting course took place over a 15-week period and involved students carrying out various roles, taking part in team workouts and competitions, and ending with a culminating event. Suggestions for improving the delivery of the powerlifting course through use of the sport education model are provided.

Research paper thumbnail of On the Development of Numerical Iterated Method of Newton Raphson method for Estimating Nonlinear Equations

Abstract:This paper used the Newton-type Methodfor estimating a single root of nonlinear equation... more Abstract:This paper used the Newton-type Methodfor estimating a single root of nonlinear equations. This method is iterative method and also known as one of the open methods. Open method are fast converging method as compared to closed method but the convergence is not guaranteed. Since open methods are fast convergence methods that is why they are widely used in Applied Mathematics. The proposed numerical technique is second order of convergence, and which is based on Newton Raphson method. The developed algorithm is compared with the well-known Newton Raphson Method and results show that our developed method is much better than the well-known method. Furthermore, examples are also give in order to give more detailed about the present work and reader will come to know that why developed method is much better as compare to well-known method.

Research paper thumbnail of Technological Progress in Agricultural Sector of Pakistan

Technological progress has played an important role to identify the demand of agro food in differ... more Technological progress has played an important role to identify the demand of agro food in different decades. Total factor productivity index is used as proxy for the technological progress. The data consisted of output and input variables for the technological progress has been taken from the year of 1961-2013from different sources. The tremendous growth in the TFP has been observed during the decade of 60’s and lowest rates during the decade of 70s and in 2000. The results realized those factors which affected the productivity in different decades. Increase in inputs is not only the cause of favourable production, but the main thing is to efficiently utilize those resources. TFP index showed that in 60’s when government implement strategies effectively it increased the TFP rate. The results significantly proved that technological progress in different decades has highly affected the growth rates in agricultural sector.Keywords: Tornqvist-theil (T-T) index, technological progress, ...

Research paper thumbnail of Technological and Marketing Innovation for Explaining Organizational Growth

Amac: Bu ara s tirmanin amaci, teknolojik ve pazarlama inovasyonun orgutsel buyume uzerindeki etk... more Amac: Bu ara s tirmanin amaci, teknolojik ve pazarlama inovasyonun orgutsel buyume uzerindeki etkisini kontrol etmek ve her ikisinin etkisini kar silastirmaktir. Tasarim: Ankete dayali teknik bu cali s ma i c in benimsenmi s tir. Teknolojik ve pazarlama inovasyonu, teknoloji ve pazarlama olarak inovasyon unsurlari ve orgutsel buyume gibi kabul edilmi s bir o l cu yle o l cu l u r. C al i s man i n verileri Pakistan' i n Peshawar kentindeki cam end u strisinden 89 kat i l i mc i dan al i nm i s t i r. Bulgular: Cali s man i n bulgular i teknolojik inovasyonun ve pazarlama inovasyonunun o rg u tsel b u y u me uzerinde onemli bir etkisi oldu g unu g o stermektedir.

Research paper thumbnail of The Impact of Risk Management on Financial Performance of Banking Sector in Pakistan

The aim of the study is to examine the effect of risk management practices on the performance of ... more The aim of the study is to examine the effect of risk management practices on the performance of the banking sector in Pakistan. Primary data was collected via adopted questionnaire whereas secondary data was collected from SBP and security exchange commission websites over the period of 2011 to 2015. The study found positive relationship among credit risk identification (CRI), credit risk appraisal (CRA), credit risk control (CRC) & return on asset (ROA), while negatively association was found between credit risk monitoring (CRM) & return on assets (ROA). Moreover, positively association was noticed among credit risk identification (CRI), credit risk appraisal (CRA), credit risk monitoring (CRM) and return on equity (ROE), whereas negatively associated was observed between credit risk control (CRC), and return on equity (ROE). The study concluded that credit risk identification (CRI), credit risk appraisal (CRA), and credit risk control (CRC) positively influenced the financial per...

Research paper thumbnail of Frequency of Radial Artery Occlusion (RAO) in Patients undergoing Percutaneous Cardiac Catheterization

Pakistan Journal of Medical and Health Sciences, 2021

Objective: The aim of this study was to determine the frequency of radial artery occlusion (RAO) ... more Objective: The aim of this study was to determine the frequency of radial artery occlusion (RAO) in patients undergoing percutaneous cardiac catheterization. Study Design: Prospective study Place and Duration: The study was conducted at cardiology department of Cat A Hospital Batkhela and Fauji Foundation Hospital Peshawar for six months duration from January 2021 to June 2021. Methods: Total one hundred and forty patients of both genders were included in this study. Patients’ detailed demographics including age, sex and body mass index were recorded after taking informed written consent. Patients who underwent percutaneous cardiac catheterization were presented in this study. Hypertension, diabetes mellitus and smoking history were analyzed. Frequency of radial artery occlusion (RAO) was measured by Barbeau test. Chi square test and fisher test was used to measure prevalence of RAO with respect to comorbidities. Complete data was analyzed by SPSS 23.0 version. Results: There were 1...

Research paper thumbnail of Analytical study of electrical performance of SiGe-based n-p-p solar cells with BaSi2 BSF structure

Solar Energy, 2021

Abstract This manuscript reports on an analytical study required to determine and enhance the eff... more Abstract This manuscript reports on an analytical study required to determine and enhance the effect of the high–low junction based back surface field (BSF) of thin n-CdS/p-SiGe/p + -BaSi2 heterojunction solar cell. A 0.3 µm thick BSF layer made of extensively available and low-cost barium silicide (BaSi2) is introduced into the basic SiGe solar cell for the first time. SCAPS-1D simulator is employed to analyze different parameters such as open circuit voltage (Voc), short-circuit current density (Jsc), fill factor (FF), quantum efficiency (QE) and conversion efficiency ( η ) of the device. The SiGe absorber layer thickness is varied from 2 to 50 µm to analyze the device performance, however optimum results are observed between 10 and 15 µm. The BSF BaSi2 layer thickness changing from 0.1 to 0.8 µm to check the viability of device for optimal efficiency. The present structure anticipates an efficiency of 17.05% for BSF layer thickness of 0.8 µm. In addition, the use of SiGe earth abundant material instead of CIGS having rare earth metals indium and gallium, reduces the overall fabrication cost of the solar cell.

Research paper thumbnail of Study On Top Athletes At 400 M Hurdles

The European Proceedings of Social and Behavioural Sciences, 2019

Research paper thumbnail of Incidence, Treatment, and Outcomes of Coronary Perforation During Chronic Total Occlusion Percutaneous Coronary Intervention

The American journal of cardiology, Jan 24, 2017

Coronary perforation is a potential complication of chronic total occlusion (CTO) percutaneous co... more Coronary perforation is a potential complication of chronic total occlusion (CTO) percutaneous coronary intervention (PCI). We analyzed 2,097 CTO PCIs performed in 2,049 patients from 2012 to 2017. Patient age was 65 ± 10 years, 85% were men, and 36% had prior coronary artery bypass graft surgery. Technical and procedural success were 88% and 87%, respectively. A major periprocedural adverse cardiovascular event occurred in 2.6%. Coronary perforation occurred in 85 patients (4.1%); The frequency of Ellis class 1, 2, and 3 perforations was 21%, 26%, and 52%, respectively. Perforation occurred more frequently in older patients and those with previous coronary artery bypass graft surgery (61% vs 35%, p < 0.001). Cases with perforation were angiographically more complex (Multicenter CTO Registry in Japan score 3.0 ± 1.2 vs 2.5 ± 1.3, p < 0.001). Twelve patients (14%) with perforation experienced tamponade requiring pericardiocentesis. Patient age, previous PCI, right coronary arte...

Research paper thumbnail of The Effect of International Trade on Carbon Emissions: Evidence from Pakistan

Journal of Economics and Sustainable Development, 2015

Research paper thumbnail of Glyphosate hormesis in broad-leaved weeds: a challenge for weed management

Archives of Agronomy and Soil Science, 2016

ABSTRACT Little is known of glyphosate-induced hormesis in weeds and how this might influence wee... more ABSTRACT Little is known of glyphosate-induced hormesis in weeds and how this might influence weed management. To test the hormetic effect of low doses of glyphosate on broad-leaved weeds, two experiments were conducted, in the laboratory and the screenhouse. The hormetic effects of glyphosate solution in growth media (0, 65, 130, 250, and 500 g acid equivalent (a.e) ha−1) and foliar spray (0, 4, 8, 16, 32, and 64 g a.e. ha−1) were tested on four broad-leaved weeds (Coronopus didymus, Chenopodium album, Rumex dentatus, and Lathyrus aphaca). Glyphosate solution in the range 65–250 g a.e. ha−1 stimulated the germination and seedling growth of all tested weeds. However, at 500 g a.e. ha−1 inhibition of germination and growth was observed. Foliarly applied glyphosate in the range 4–32 g a.e. ha−1 increased root and shoot length, dry biomass, and seed production ability of all four weeds species; however, the stimulatory response was species dependent. These results indicate that glyphosate hormesis could play a significant role in altering crop/weed competition and might influence weed management.

Research paper thumbnail of Optimization of CdS-free non-toxic electron transport layer for Sb2S3-based solar cell with notable enhanced performance

Journal of Computational Electronics

Research paper thumbnail of The Role of Intellectual Capital in Innovation With the Mediation Effect of Organizational Capital An Empirical Sutdy of Pakistani Banks

Zenodo (CERN European Organization for Nuclear Research), Dec 31, 2021

Research paper thumbnail of Macro Determinants of Technological Progress in Agriculural Sector of Pakistan

Research paper thumbnail of Organi̇zasyonel Büyümeni̇n Açiklanmasinda Teknoloji̇k Ve Pazarlama İnovasyonu

DergiPark (Istanbul University), Mar 31, 2019

Purpose-Purpose of this research paper is to check the impact of technological and marketing inno... more Purpose-Purpose of this research paper is to check the impact of technological and marketing innovation on organizational growth and to compare impact of both., Design-Survey based technique has been adopted for the study. Technological and marketing innovation are measured by an adopted scale, including elements of innovation as technology and marketing, and organizational growth. Data for the study was taken from 89 respondents from glass industry in Peshawar, Pakistan. Findings-Findings of the study suggest that technological innovation and marketing innovation has significant impact on organizational growth.

Research paper thumbnail of Optimization of Electrical Performance of Defected n+-p-p+ Solar Cell with CdS/BaSi2/Cu2O Heterostructure Using SCAPs 1D

Present study investigates the performance of BaSi2 based BSF structure solar cell. SCAPS 1D simu... more Present study investigates the performance of BaSi2 based BSF structure solar cell. SCAPS 1D simulator has been employed to investigate the heterostructure solar cell. To decrease the recombination loss due to minority carrier, a new configuration is proposed by inclusion of the p-type cuprous oxide (Cu2O) as BSF layer. The Cu2O BSF layer width varying in range 0.1 to 0.4 µm to analyze the feasibility of device for optimum performance. The anticipated structure consists of ZnO/CdS/BaSi2/Cu2O layers and offers the maximum efficiency of above 24%. Parameters for example open circuit voltage (Voc), short-circuit current density (Jsc), fill factor (FF), conversion efficiency (η) and quantum efficiency (QE) of the device have been analyzed graphically. The optimized structure may have significant impact on future development of advanced photovoltaic devices.

Research paper thumbnail of Impact of Amorphous and Crystalline Tungsten Trioxide (WO3) Thin Films as an Antireflection Material for Silicon (c-Si) Solar Cells

Journal of Electronic Materials

Research paper thumbnail of Contrast utilization patterns during CTO-PCI: Insights from the PROGRESS-CTO registry

Research paper thumbnail of Use of the gaia guidewires in a contemporary multicenter registry of chronic total occlusion percutaneous coronary intervention

Research paper thumbnail of Complications Associated with Transulnar Approach in Patients undergoing Percutaneous Coronary Interventions

Pakistan Journal of Medical and Health Sciences, 2021

Aim: To examine the prevalence of complications related with transulnar approach in patients unde... more Aim: To examine the prevalence of complications related with transulnar approach in patients undergoing elective percutaneous coronary interventions. Study Design: Cross-sectional/observational study. Place & Duration: The study was conducted at cardiology department of Cat A Hospital Batkhela and Fauji Foundation Hospital Peshawar for six months duration from January 2020 to December 2020. Methods: One hundred and eighteen patients of both genders with ages 20 to 75 years who underwent percutaneous coronary interventions were included. Patients’ detailed demographics including age, sex, BMI and com-morbidities were recorded after taking informed written consent from all the patients. All the patients had percutaneous coronary procedure through transulnar approach and periprocedural complications were examined. Data was analyzed using SPSS 24.0. Results: Out of 118 patients 85 (72.03%) were males and 33 (27.97%) were females with mean age of 55.74±11.71 years. Mean BMI was 28.09±7.3...

Research paper thumbnail of Using Sport Education to Deliver a Powerlifting University Physical Activity Course

Journal of Physical Education, Recreation & Dance, 2021

The purpose of this article is to introduce and provide suggestions for the organization of a uni... more The purpose of this article is to introduce and provide suggestions for the organization of a university powerlifting physical activity course in which the sport education model was implemented. The powerlifting course took place over a 15-week period and involved students carrying out various roles, taking part in team workouts and competitions, and ending with a culminating event. Suggestions for improving the delivery of the powerlifting course through use of the sport education model are provided.

Research paper thumbnail of On the Development of Numerical Iterated Method of Newton Raphson method for Estimating Nonlinear Equations

Abstract:This paper used the Newton-type Methodfor estimating a single root of nonlinear equation... more Abstract:This paper used the Newton-type Methodfor estimating a single root of nonlinear equations. This method is iterative method and also known as one of the open methods. Open method are fast converging method as compared to closed method but the convergence is not guaranteed. Since open methods are fast convergence methods that is why they are widely used in Applied Mathematics. The proposed numerical technique is second order of convergence, and which is based on Newton Raphson method. The developed algorithm is compared with the well-known Newton Raphson Method and results show that our developed method is much better than the well-known method. Furthermore, examples are also give in order to give more detailed about the present work and reader will come to know that why developed method is much better as compare to well-known method.

Research paper thumbnail of Technological Progress in Agricultural Sector of Pakistan

Technological progress has played an important role to identify the demand of agro food in differ... more Technological progress has played an important role to identify the demand of agro food in different decades. Total factor productivity index is used as proxy for the technological progress. The data consisted of output and input variables for the technological progress has been taken from the year of 1961-2013from different sources. The tremendous growth in the TFP has been observed during the decade of 60’s and lowest rates during the decade of 70s and in 2000. The results realized those factors which affected the productivity in different decades. Increase in inputs is not only the cause of favourable production, but the main thing is to efficiently utilize those resources. TFP index showed that in 60’s when government implement strategies effectively it increased the TFP rate. The results significantly proved that technological progress in different decades has highly affected the growth rates in agricultural sector.Keywords: Tornqvist-theil (T-T) index, technological progress, ...

Research paper thumbnail of Technological and Marketing Innovation for Explaining Organizational Growth

Amac: Bu ara s tirmanin amaci, teknolojik ve pazarlama inovasyonun orgutsel buyume uzerindeki etk... more Amac: Bu ara s tirmanin amaci, teknolojik ve pazarlama inovasyonun orgutsel buyume uzerindeki etkisini kontrol etmek ve her ikisinin etkisini kar silastirmaktir. Tasarim: Ankete dayali teknik bu cali s ma i c in benimsenmi s tir. Teknolojik ve pazarlama inovasyonu, teknoloji ve pazarlama olarak inovasyon unsurlari ve orgutsel buyume gibi kabul edilmi s bir o l cu yle o l cu l u r. C al i s man i n verileri Pakistan' i n Peshawar kentindeki cam end u strisinden 89 kat i l i mc i dan al i nm i s t i r. Bulgular: Cali s man i n bulgular i teknolojik inovasyonun ve pazarlama inovasyonunun o rg u tsel b u y u me uzerinde onemli bir etkisi oldu g unu g o stermektedir.

Research paper thumbnail of The Impact of Risk Management on Financial Performance of Banking Sector in Pakistan

The aim of the study is to examine the effect of risk management practices on the performance of ... more The aim of the study is to examine the effect of risk management practices on the performance of the banking sector in Pakistan. Primary data was collected via adopted questionnaire whereas secondary data was collected from SBP and security exchange commission websites over the period of 2011 to 2015. The study found positive relationship among credit risk identification (CRI), credit risk appraisal (CRA), credit risk control (CRC) & return on asset (ROA), while negatively association was found between credit risk monitoring (CRM) & return on assets (ROA). Moreover, positively association was noticed among credit risk identification (CRI), credit risk appraisal (CRA), credit risk monitoring (CRM) and return on equity (ROE), whereas negatively associated was observed between credit risk control (CRC), and return on equity (ROE). The study concluded that credit risk identification (CRI), credit risk appraisal (CRA), and credit risk control (CRC) positively influenced the financial per...

Research paper thumbnail of Frequency of Radial Artery Occlusion (RAO) in Patients undergoing Percutaneous Cardiac Catheterization

Pakistan Journal of Medical and Health Sciences, 2021

Objective: The aim of this study was to determine the frequency of radial artery occlusion (RAO) ... more Objective: The aim of this study was to determine the frequency of radial artery occlusion (RAO) in patients undergoing percutaneous cardiac catheterization. Study Design: Prospective study Place and Duration: The study was conducted at cardiology department of Cat A Hospital Batkhela and Fauji Foundation Hospital Peshawar for six months duration from January 2021 to June 2021. Methods: Total one hundred and forty patients of both genders were included in this study. Patients’ detailed demographics including age, sex and body mass index were recorded after taking informed written consent. Patients who underwent percutaneous cardiac catheterization were presented in this study. Hypertension, diabetes mellitus and smoking history were analyzed. Frequency of radial artery occlusion (RAO) was measured by Barbeau test. Chi square test and fisher test was used to measure prevalence of RAO with respect to comorbidities. Complete data was analyzed by SPSS 23.0 version. Results: There were 1...

Research paper thumbnail of Analytical study of electrical performance of SiGe-based n-p-p solar cells with BaSi2 BSF structure

Solar Energy, 2021

Abstract This manuscript reports on an analytical study required to determine and enhance the eff... more Abstract This manuscript reports on an analytical study required to determine and enhance the effect of the high–low junction based back surface field (BSF) of thin n-CdS/p-SiGe/p + -BaSi2 heterojunction solar cell. A 0.3 µm thick BSF layer made of extensively available and low-cost barium silicide (BaSi2) is introduced into the basic SiGe solar cell for the first time. SCAPS-1D simulator is employed to analyze different parameters such as open circuit voltage (Voc), short-circuit current density (Jsc), fill factor (FF), quantum efficiency (QE) and conversion efficiency ( η ) of the device. The SiGe absorber layer thickness is varied from 2 to 50 µm to analyze the device performance, however optimum results are observed between 10 and 15 µm. The BSF BaSi2 layer thickness changing from 0.1 to 0.8 µm to check the viability of device for optimal efficiency. The present structure anticipates an efficiency of 17.05% for BSF layer thickness of 0.8 µm. In addition, the use of SiGe earth abundant material instead of CIGS having rare earth metals indium and gallium, reduces the overall fabrication cost of the solar cell.

Research paper thumbnail of Study On Top Athletes At 400 M Hurdles

The European Proceedings of Social and Behavioural Sciences, 2019

Research paper thumbnail of Incidence, Treatment, and Outcomes of Coronary Perforation During Chronic Total Occlusion Percutaneous Coronary Intervention

The American journal of cardiology, Jan 24, 2017

Coronary perforation is a potential complication of chronic total occlusion (CTO) percutaneous co... more Coronary perforation is a potential complication of chronic total occlusion (CTO) percutaneous coronary intervention (PCI). We analyzed 2,097 CTO PCIs performed in 2,049 patients from 2012 to 2017. Patient age was 65 ± 10 years, 85% were men, and 36% had prior coronary artery bypass graft surgery. Technical and procedural success were 88% and 87%, respectively. A major periprocedural adverse cardiovascular event occurred in 2.6%. Coronary perforation occurred in 85 patients (4.1%); The frequency of Ellis class 1, 2, and 3 perforations was 21%, 26%, and 52%, respectively. Perforation occurred more frequently in older patients and those with previous coronary artery bypass graft surgery (61% vs 35%, p < 0.001). Cases with perforation were angiographically more complex (Multicenter CTO Registry in Japan score 3.0 ± 1.2 vs 2.5 ± 1.3, p < 0.001). Twelve patients (14%) with perforation experienced tamponade requiring pericardiocentesis. Patient age, previous PCI, right coronary arte...

Research paper thumbnail of The Effect of International Trade on Carbon Emissions: Evidence from Pakistan

Journal of Economics and Sustainable Development, 2015

Research paper thumbnail of Glyphosate hormesis in broad-leaved weeds: a challenge for weed management

Archives of Agronomy and Soil Science, 2016

ABSTRACT Little is known of glyphosate-induced hormesis in weeds and how this might influence wee... more ABSTRACT Little is known of glyphosate-induced hormesis in weeds and how this might influence weed management. To test the hormetic effect of low doses of glyphosate on broad-leaved weeds, two experiments were conducted, in the laboratory and the screenhouse. The hormetic effects of glyphosate solution in growth media (0, 65, 130, 250, and 500 g acid equivalent (a.e) ha−1) and foliar spray (0, 4, 8, 16, 32, and 64 g a.e. ha−1) were tested on four broad-leaved weeds (Coronopus didymus, Chenopodium album, Rumex dentatus, and Lathyrus aphaca). Glyphosate solution in the range 65–250 g a.e. ha−1 stimulated the germination and seedling growth of all tested weeds. However, at 500 g a.e. ha−1 inhibition of germination and growth was observed. Foliarly applied glyphosate in the range 4–32 g a.e. ha−1 increased root and shoot length, dry biomass, and seed production ability of all four weeds species; however, the stimulatory response was species dependent. These results indicate that glyphosate hormesis could play a significant role in altering crop/weed competition and might influence weed management.