Search or add a thesis

Advanced Search (Beta)
Home > Modeling the Impact of Climate Change on Seed Cotton Gossypium Hirsutum L. Yield in Punjab, Pakistan .

Modeling the Impact of Climate Change on Seed Cotton Gossypium Hirsutum L. Yield in Punjab, Pakistan .

Thesis Info

Access Option

External Link

Author

Iqbal, Javed

Program

PhD

Institute

University of Agriculture

City

Faisalabad

Province

Punjab

Country

Pakistan

Thesis Completing Year

2010

Thesis Completion Status

Completed

Subject

Applied Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/handle/123456789/1907

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726661789

Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.

Similar


Climate change and its impact on crop productivity is a burning issue of the day .according to predictions of international panel on climate change (IPCC) and Pakistan Meteorological Department (PMD) these changes are taking place very rapidly on global level and affecting crop productivity. Their predictions are based on long term past climate data analysis with the help of general circulation models (GCMS).The aim of present study was to calibrate and validate CSM-Crop-Grow Cotton Model in DSSAT V 4.0.2. to simulate development, growth, and yield of cotton (Gossypium hirsutum L) under increased CO 2 concentration, elevated temperatures and varying rainfall scenarios. For these purpose field trials at three locations were conducted with two sowing dates, four cotton cultivars and four nitrogen levels with split-split plot design having three replications during year 2005 and 2006. The data on phenology, growth and yield were recorded and used for model calibration during 2005 (Genetic co-efficient of four cotton cultivars were determined).The model was then validated with independent set of data collected during year 2006 with same set of coefficient, long term past historic climate data of three locations (1974-2006), soil and crop management data used as input data for model and environmental modification sub menu of seasonal tool selected various climate change scenarios viz current i-e no change in environment. Elevated temperatures of + 0.9 O C and 1.8 O C, increased concentrations of CO 2 from 360 ppm to 550 ppm with no change in rainfall and increased / decreased 3% , 6% levels of rainfall expected in 2025 & 2050. The results indicated that model successfully simulated 80-90 % crop phenology and growth and 90-98 % yield accurately at various sites and can be used as reliable agronomic tool for strategy management in future. The elevated CO 2 levels would effect cotton crop growth and yield positively on all locations. Climate change analysis indicated strong influence of temperature on cotton production in Punjab, Pakistan. The yield will be substantially decreased with increasing temperature 1.8 O C and the effect was more severe at xviiilocations like Sahiwal. Increasing or decreasing 6% rainfall would affect cotton growth and yield negatively and drastic yield reductions were observed from the current. Selection of suitable cultivar, changing sowing time and nitrogen application are helpful in mitigation of adverse effects of changed climate of 2025-2050. Dominance analysis of different planting dates and cultivars at various locations suggested that 60 days early sowing of cotton crop from current at Faisalabad and Sahiwal with cultivar SLH-284, N applied @ 200 kg ha -1 is the best choice under changed climate scenarios (2050) whereas cultivar CIM -506 with nitrogen rate of 200 kg ha -1 out yielded all other cultivars when sown 15 days late from current at Multan location under changed climate scenario of 2050.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

ڈاکٹر سلامت اﷲ

ڈاکٹر سلامت اﷲ
مشہور ممتاز ماہر تعلیم ڈاکٹر سلامت اﷲ کا انتقال ۹۰ برس کی عمر میں ۲۳؍ جنوری ۲۰۰۲؁ء کو دہلی میں ہوا اور جامعہ ملیہ اسلامیہ کے قبرستان میں تدفین ہوئی، جامعہ سے عمر بھر ان کا گہرا تعلق رہا، وہ اس کے شعبہ تعلیم (استادوں کے مدرسہ) کے معماروں اور قومی سطح کے ماہرین تعلیم میں تھے۔ رسالہ جامعہ کے شعبہ ادارت سے منسلک تھے اور اس میں ان کے مضامین بھی چھپتے تھے، انہوں نے اردو اور انگریزی میں متعدد کتابیں لکھیں جن میں تعلیم اور اس کا سماجی پس منظر، تعلیم، فلسفہ تعلیم اور سماج، بنیادی استاد کے لئے، ہم کیسے پڑھائیں: Education of Muslims in thought or Basic اور Secular India can Education do it Education وغیرہ قابل ذکر ہیں، وہ عمر بھر علمی و تعلیمی خدمت میں مصروف رہے، ان کی وفات علمی و تعلیمی دنیا کا بڑا حادثہ ہے، اﷲ تعالیٰ ان کی مغفرت فرمائے، آمین!! (ضیاء الدین اصلاحی، اپریل ۲۰۰۲ء)

Compatibility of Education and Training in the Light of the Seerah of the Holy Prophet

Humankind has been granted a special status due to its being vicegerent of Allah on earth for he has been entrusted with the responsibility to keep order in the world according to the directives of its Creator. Humans are guided by Prophets in history. Some of these Prophets have got greater value, sphere and depth of influence on humanity due to different factors. Muhammad (Peace Be Upon Him) is the last Prophet of Allah, for the eternity and whole humanity. After him, Islam is completed for all times to come. Islam is a complete code of life; education and training constituting its crux. Prophet Muhammad (Peace Be Upon Him) was greatly concerned and cognizant of education and training of his followers which is evident from multifarious events of his life.  Major emphasis was laid on training coupled with education and both are, thus, inevitably interlocked with each other. It is clear that education was considered an assimilation of knowledge and training was taken as its reflection in daily life. The verses of the Holy Quran and sayings of the Holy Prophet (Peace Be Upon Him) bear a perfect testimony to this aspect of foremost significance. The earlier people in the fold of Islam were much concerned about training and nurturing, hence they avoided mere memorization of facts. The present paper is an attempt to discover the compatibility between education and training in the light of the paradigm of secret of the Prophet (Peace Be Upon Him) of Islam.

Exploring the Role of a Head Teacher in Leading a Rural Government High School of District Ghotki, Sindh

The standard of government-sponsored education in Pakistan is not satisfactory. The state of affairs in education, generally in urban areas and particularly in rural areas, is of low standard. One of the obvious reasons of this state of education, given in educational research is that the government schools are ‘’under-managed and ‘’misled’’. However, very little research has been conducted to explore the role of head teachers, particularly in the rural contexts of Pakistan. This study in its nature, is the first study which is aimed at exploring the role of head teacher in leading a rural government high school of Sindh, one of the provinces of Pakistan. The study was undertaken in the qualitative research paradigm, in which grounded theory research approach was used. Data were collected through interviews, observations, informal discussions, and review of relevant documents. The main purpose of the study was to explore and understand that how a head teacher leads a government high school in a rural context. The study shows that despite having immense cultural, political, and bureaucratic challenges, the head teacher has managed to lead the school successfully. Furthermore, the study reveals that because of head teacher's distributed leadership style, he managed to receive maximum co-operation from students, teachers, parents, community members and District Education Officers. The involvement and cooperation of these stakeholders was a key to school improvement process. Study draws the conclusion that head teacher has taken strong steps to transform the school into an effective school or school as a learning community.