نتایج جستجو برای: during whose production chemical fertilizers and pesticides are used

تعداد نتایج: 17371752  

2013
Adnan Niazi Shahid Manzoor Sarosh Bejai Johan Meijer Erik Bongcam-Rudloff

Motivation and Objectives Over the past years, different measures have been adopted to increase crop production including chemical fertilizers and pesticides, and more recently genetic manipulation of plants. Such methods are costly tools for increasing the yield. In addition, side effects such as nutrient leakage, development of pesticide resistant strains, and negative effects on the environm...

2014
Yantai Gan Chang Liang Qiang Chai Reynald L. Lemke Con A. Campbell Robert P. Zentner

Wheat is one of the world's most favoured food sources, reaching millions of people on a daily basis. However, its production has climatic consequences. Fuel, inorganic fertilizers and pesticides used in wheat production emit greenhouse gases that can contribute negatively to climate change. It is unknown whether adopting alternative farming practices will increase crop yield while reducing car...

Journal: :Journal of Community Practice and Social Welfare 2022

The decreased soil carrying capacity is due to reduced organic matter content, caused by disproportionally larger use of inorganic fertilizers and synthetic chemical pesticides in farming activities than environmentally friendly weeds, disease, insect pests control materials. Reducing the could be done using production facilities agriculture form non-chemical on a scale, which base materials ar...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده علوم انسانی 1391

the present study was conducted to investigate the effect of implicit focus on form through input flooding and the effect of noticing, explicit focus on form on linguistic accuracy. to fulfill the purpose of the study, 86 iranian pre-intermediate efl learners of one of the language institutes were chosen by means of administering ket as the homogeneity test. these learners were pretested throug...

پایان نامه :0 1374

the aim of this study has been to find answers for the following questions: 1. what is the effect of immediate correction on students pronunciation errors? 2. what would be the effect of teaching the more rgular patterns of english pronunciation? 3. is there any significant difference between the two methods of dealing with pronuciation errore, i. e., correction and the teaching of the regular ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و زبانهای خارجی 1393

the current study aimed at investigating the relationship between motivation and test preparation strategies (tpss) used by iranian pre-university students in their preparation period for the university entrance exam (uee). due to the importance of uee in iran, this study also attempted to show its impact on these two important variables. to this end, 100 pre-university students in an iranian p...

Journal: :مدیریت خاک و تولید پایدار 0
ملیحه آق ارکاکلی فارغ التحصیل کارشناسی ارشد دانشگاه علوم کشاورزی و منابع طبیعی گرگان رامتین جولایی عضو هیات علمی دانشگاه علوم کشاورزی و منابع طبیعی گرگان علی کرامت زاده عضو هیات علمی گروه اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان فرهاد شیرانی بیدآبادی عضو هیات علمی گروه اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

abstract:background and objectivesenvironmental is one of the most important components of global macro policies, therefore, one of the main prerequisite of many activities in macro level is compatibility with environment. environmental pollution is one of the most significant challenges that is faced by human society in 21st century. agriculture sector compare to the other other sectors of eco...

2016
Christine G. Parks Jane A. Hoppin Anneclaire J. De Roos Karen H. Costenbader Michael C. Alavanja Dale P. Sandler

BACKGROUND Farming has been associated with rheumatoid arthritis (RA), but the role of pesticides is not known. OBJECTIVES We examined associations between RA and pesticides or other agricultural exposures among female spouses of licensed pesticide applicators in the Agricultural Health Study. METHODS Women were enrolled between 1993 and 1997 and followed through 2010. Cases (n = 275 total,...

پایان نامه :0 1375

investigation the archetype of mother can help the reader to understand poes works, especially his fiction, better, if not fully. motivated by internal and external drives to get into the universe in its manifold form poe was impelled to art and, from various modes of art, to symbolism. how much was poe successful to produce works of art has been a matter of dispute among critics. however, ther...

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