نتایج جستجو برای: rice growing system therefore

تعداد نتایج: 2913202  

2012
Roel H. Bosma Dang K. Nhan Henk M. J. Udo Uzay Kaymak

In the Mekong delta, inland fishing and rice production provided a major source of income for rural communities. Since early settlement, the inhabitants have caught fish. Still, fish provides the main source of animal protein in their daily diet (Madan et al. 2005). Fish are caught in flood plains and in rice fields. The wild fish catch has declined since 1970 (Gagauan & Arce 1992), as a result...

L. Asad M. Akter, M. Asaduzzaman M.M. Hossain

The experiment was conducted to study the effect of treatment of rice straw with urea and a urease containing midden soil on the chemical composition of treated rice straw, feed intake of the animals, nutrients digestibility, body weight gain, feed conversion efficiency and overall economy of feeding for a period of 105 days. Twelve indigenous growing cattle (live weight 130.00±1.67 kg) were se...

رکنی, محمود علی , شکرزاده, محمد, گالستین, ,

Background and purpose: Water and soil pollution with heavy metals are among serious ever-growing environmental problems. Human activity accounts for much of the poisonous metals and results in increases soil pollution. There are many factors related to soil and plants properties and environmental issues. Release of heavy metal into food chain in critical densities has harmful metabolic and phy...

Fatemeh Pirpedardar, Mohammad Parviz Orang Eyvazzadeh

Objective: The usage of pesticides has increased during the recent years. One the other hand, presence of harmful pesticides residue in rice and other food has caused a great concern among the consumers. Therefore, it is important to develop some pragmatic procedures to increase the food safety along with the reduction in consumption of pesticide residues. Methods: A gas chromatograph with elec...

A.R. Sepaskhah, M.R. Abbasi

A more efficient water use system is needed for agriculture. This is more evidence for rice production with a higher water use for economical production. A large cultivar×water regime interaction exists for grain yield in rice. Therefore, information is required to adopt new rice cultivars with high yield potential under water-saving conditions. The objectives of this study were to analyze the ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...

2007
S. PENG

Increasing yield potential of lowland rice remains to be the top priority in rice geneticimprovement programmes, because rice farmers’ primary concern is still grain yield and world rice production has to increase by 1% annually in the next 20 years to meet the demand of the growing population. Improvements in yield potential of irrigated lowland rice were achieved under ample supply of water a...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
J Stephen Lansing James N Kremer

I n 2002, the United Nations Food and Agriculture Organization launched a program to recognize “globally important agricultural heritage systems” (1). However, so far, only eight systems have been included (1). In PNAS, the work by Xie et al. (2) reports the results of a 5-yr study of one of the systems, a farming system in south China, where for over 1,200 y, farmers have grown an indigenous s...

2017
Meng Wu Guilong Li Weitao Li Jia Liu Ming Liu Chunyu Jiang Zhongpei Li

Field plot experiments were conducted over 3 years (from April 2014 to November 2016) in a double-rice (Oryza sativa L.) cropping system in subtropical China to evaluate the effects of N fertilizer placement on grain yield and N recovery efficiency (NRE). Different N application methods included: no N application (CK); N broadcast application (NBP); N and NPK deep placement (NDP and NPKDP, resp...

Journal: :Ecology and Society 2023

Nigeria is a major rice-producing and rice-importing country in Africa, challenged with ensuring rice-food security for its growing population. Successive governments have implemented several strategies to increase local rice production such as import restriction policies agricultural investments. These yielded results but achieving long-term sustainable growth Nigeria’s agri-food system has re...

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