نتایج جستجو برای: irrigated rice

تعداد نتایج: 79982  

Journal: :The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2012

2013
David B. Lobell Kenneth G. Cassman Christopher B. Field

Future trajectories of food prices, food security, and cropland expansion are closely linked to future average crop yields in the major agricultural regions of the world. Because the maximum possible yields achieved in farmers’ fields might level off or even decline in many regions over the next few decades, reducing the gap between average and potential yields is critical. In most major irriga...

Journal: :BMC Public Health 2006
Mushfiqur R Tarafder Ernesto Balolong Hélène Carabin Patrick Bélisle Veronica Tallo Lawrence Joseph Portia Alday Ryan O'Neil Gonzales Steven Riley Remigio Olveda Stephen T McGarvey

BACKGROUND Few studies have described heterogeneity in Schistosoma japonicum infection intensity, and none were done in Philippines. The purpose of this report is to describe the village-to-village variation in the prevalence of two levels of infection intensity across 50 villages of Samar Province, the Philippines. METHODS This cross-sectional study was conducted in 25 rain-fed and 25 irriga...

2015
Zhenhua Deng Ling Qin Yu Gao Alison Ruth Weisskopf Chi Zhang Dorian Q. Fuller Swarup Kumar Parida

Baligang is a Neolithic site on a northern tributary of the middle Yangtze and provides a long archaeobotanical sequence from the Seventh Millennium BC upto the First Millennium BC. It provides evidence for developments in rice and millet agriculture influenced by shifting cultural affiliation with the north (Yangshao and Longshan) and south (Qujialing and Shijiahe) between 4300 and 1800 BC. Th...

2016
Daba Ndour Diaga Diouf Isaac Kofi Bimpong Abdoulaye Sow Ghislain Kanfany

In the Sahel zone of West Africa that extends from Senegal to Chad, temperatures can vary from less than 15 ̋C to 25 ̋C from November to February. These low temperatures affect the growth, development and yield of rice plants, and therefore constitute a major constraint to rice production in the Sahel. In order to identify rice varieties tolerant to cold stress at different developmental stages...

Journal: :desert 2015
fatemeh rabbani hossein mohammadi ghasem azizi daruosh mazaheri

climate change has direct and indirect consequences on crop production and food security. agriculture and cropproduction is one of the factors which depend on the weather conditions and it provides the human requirements inmany aspects. the objective of this study is to assess the impacts of future climatic change on irrigated rice yieldusing the ceres-rice model in the southern coast of caspia...

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