Search or add a thesis

Advanced Search (Beta)
Home > Evaluation and Management of Fenoxaprop-P-Ethyl Resistance in Phalaris Minor Retz

Evaluation and Management of Fenoxaprop-P-Ethyl Resistance in Phalaris Minor Retz

Thesis Info

Access Option

External Link

Author

Tasawar Abbas

Program

PhD

Institute

University of Agriculture

City

Faisalabad

Province

Punjab

Country

Pakistan

Thesis Completing Year

2017

Thesis Completion Status

Completed

Subject

Applied Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/8197/1/Tasawer%20Abbas%20final%20thesis%20PhD.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726106407

Similar


Widespread herbicide resistance in Phalaris minor Retz., is a major bottleneck towards sustainability of wheat-based cropping system in Pakistan and many other Asian countries. A dose–response assay was conducted for confirmation of resistance in surveyed populations. Optimization of herbicide mixtures to control P. minor in wheat was done under wirehouse conditions. To manage P. minor efficacy of herbicide mixtures in integartion with crop row spacings and allelopathic crop mulches were investigated at the Agronomic Research Area, Department of Agronomy, University of Agriculture, Faisalabad over two consecutive growing seasons during winter 2014-15 and 2015-16. Most of the collected populations were resistant to fenoxaprop-P-ethyl. Resistance levels were 2.13-6.50. The tested herbicide mixtures both at 75 and 100% of the recommended dose of each mixture component provided effective control of resistant P. minor without any phytotocity on wheat. The herbicide mixtures provided consistent, effective control of P. minor under field conditions especially in 11.25 cm rows compared to in 22.50 cm wheat row spacing. Integrated use of allelopathic crop mulches and herbicide mixtures was effective to control of P. minor in wheat. They consistently enhanced the wheat yield by 23-39% and 24-35% during 2014-15 and 2015-16, respectively. The confirmation of ACCase inhibitor resistance as the first case of herbicide resistance in Pakistan leads us to discourage use of ACCase inhibitor herbicides alone. However, herbicide mixtures both at 75 and 100% of the recommended dose are suggested to manage this weed for sustainable wheat production in the surveyed cropping systems. Integration of herbicide mixtures with narrow row spacing of wheat and allelopathic mulches can help address herbicide-resistant P. minor in wheat fields.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

ڈینی سن راس

ڈینی سن راس
ہندوستان کے ایک مشہور ادیب وشاعر کے ساتھ یورپ کے ایک نامور مستشرق کابھی ماتم کرناہے۔ان کانام ڈینی سن راس تھا۔سرکاخطاب رکھتے تھے۔ عربی اورترکی ادبیات پراُن کی نظر وسیع تھی۔لندن کے مشہور اسکول آف اورینٹل اسڈیز کے ڈائریکٹر رہے اوراس سے پہلے مدرسہ عالیہ کلکتہ کے بھی پرنسپل رہ چکے تھے۔ اورپھر سب سے بڑی بات یہ ہے کہ اس علم وفضل کے باوصف مارگیولیوتھ ایسے متعصب مستشرقین کے برخلاف سرڈینی سن راس مسٹر آرنلڈ کی طرح اسلام اورمسلمانوں کے ساتھ ایک بڑی حد تک دوستانہ روش رکھتے تھے۔افسوس ہے گذشتہ ماہ اُن کے انتقال سے یورپ کے علمی حلقے السنۂ مشرقیہ کے ایک نامور فاضل سے محروم ہوگئے۔ [اکتوبر۱۹۴۰ء]

 

مشكلات التمويل بالمرابحة من وجهة نظر العملاء (دراسة ميدانية على عينة من عملاء المصارف المتمولين بالمرابحة بمدينة الأبيض)

هدفت الدراسة إلى التعرف على المشكلات التي تواجه عملاء المصارف عند طلب التمويل بالمرابحة، واقتراح الحلول اللازمة لمعالجة هذه المشكلات حتى تتحقق الاستفادة الكاملة من فرص التمويل بالمرابحة، وقد أظهرت نتائج الدراسة أن من المشكلات التي تواجه العملاء عند طلب التمويل بالمرابحة تتمثل في: تحديد البنك المركزي لمجالات محددة للتمويل بالمرابحة وعدم السماح لبعض المجالات الأمر الذي يؤدي إلى حرمان بعض العملاء من الاستفادة من هذا التمويل، وأن السقوفات التي يضعها البنك المركزي للتمويل بالمرابحة ولا يسمح بتجاوزها لا تتناسب والطموحات الاستثمارية لبعض العملاء، وأوصت الدراسة بضرورة سماح البنك المركزي للمصارف بالتوسع في مجالات التمويل بالمرابحة، والسماح بزيادة سقوفات التمويل بالمرابحة حتى تتحقق الاستفادة الكاملة من هذا التمويل. الكلمات المفتاحية: المرابحة، مشكلات التمويل بالمرابحة. المصارف

Influence of Silicon on Growth and Some Physiological Attributes of Maize Zea Mays L. under Salt Stress

Three independent experiments were carried out in hydroponic and sand cultures to explore the alleviating effects of different levels of silicon (Si) on growth related attributes and some vital physio-chemical characteristics in two maize cultivars exposed to NaCl-induced salinity stress. Each experiment comprised two maize cultivars (Sadaf and Sahiwal-2002), two salt concentrations (0 and 120 mM NaCl) with varied Si concentrations. Initially, nine Si levels (0, 0.4, 0.8, 1.2, 1.6, 2.0, 2.4, 2.8 and 3.2 mM) were used for optimization of Si levels in Hoagland’s nutrient solution. Silicic acid [Si(OH) 4 ] was used as a source of Si. Four Si levels (0, 1, 2 and 4 mM) were selected from the optimization experiment, which then were employed for major experimentation. Interactive effect of Si and salt on growth, gas exchange characteristics, plant pigments, chlorophyll fluorescence attributes, biochemical parameters like proline, total phenolics, H 2 O 2 , MDA, antioxidant enzymes (CAT, POD and SOD) and ion accumulation (Na + , Ca 2+ , K + , Cl - and Si) were determined. Exogenous application of Si improved the growth, photosynthetic efficiency, membrane stability, and antioxidant activities and alleviated the toxic effect of Na + ion via improving plant K + , water status, photosynthetic efficiency, membrane stability and activities of antioxidant enzymes. Of various levels, 1 or 2 mM Si were found more effective in this regard under control conditions. However, under stressful environment, 4 mM of Si gave maximum protection against salt stress. Of yield attributes, a positive association was found between Si application and grain yield per plant, although, Si made no change in 100-grain weight. Conclusively, Si had a positive impact on overall health of plant especially under stressed environment and was found effective in the enhancement of salinity tolerance of maize plants.