نتایج جستجو برای: agricultural crop growth models

تعداد نتایج: 1799822  

2014
H. H. Bakri

This study was carried out to assess the economic impacts of climate change on some major vegetable crops (potato, tomato and green bean) in Egypt and to predict the production, intended cultivated area and water requirements under increasing population annual growth rate of 2.07% with and without climate change during the period of 2025s2100s according to SRES A and B scenarios. The statistica...

2017
Yaghoub Fathipour Amin Sedaratian

In most developing countries, agriculture is the driving force for broad-based economic growth and low agricultural productivity is a major cause of poverty, food insecurity, and malnutrition. However, food production per unit of land is limited by many factors, includ‐ ing fertilizer, water, genetic potential of the crop and the organisms that feed on or compete with food plants. Despite the p...

2015
David J. Muth Kenneth M. Bryden R. G. Nelson D. J. Muth

This study provides a spatially comprehensive assessment of sustainable agricultural residue removal potential across the United States for bioenergy production. Earlier assessments determining the quantity of agricultural residue that could be sustainably removed for bioenergy production at the regional and national scale faced a number of computational limitations. These limitations included ...

2018
J P T Lambert H L Hicks D Z Childs R P Freckleton

Mapping weed densities within crops has conventionally been achieved either by detailed ecological monitoring or by field walking, both of which are time-consuming and expensive. Recent advances have resulted in increased interest in using Unmanned Aerial Systems (UAS) to map fields, aiming to reduce labour costs and increase the spatial extent of coverage. However, adoption of this technology ...

A. Arab G. Hoogenboom H. Rahimian Mashhadi M. Zavareh,

A standard description of growth stages for crops/plants is necessary not only for determining and improving cultural practices, but also to facilitate enhanced communication among producers, researchers, and educators. It also could help in unifying experimental results. Many different descriptions of growth stages are currently available for many crops, but there are no codes for sesame (Sesa...

2007
Peter J. Cotty Claudia Probst Ramon Jaime-Garcia

Aflatoxins are potent poisons that contaminate crops in warm regions worldwide and reduce health and economic welfare in several portions of Africa. Crops are contaminated in two phases: First, Aspergillus species infect crops during development; and second, after maturation contamination builds during exposure to warm humid conditions. Identification of the exact fungi causing contamination ca...

2002
William Easterly Ross Levine

Does economic development depend on geographic endowments like temperate instead of tropical location, the ecological conditions shaping diseases, or an environment good for grains or certain cash crops? Or do these endowments of tropics, germs, and crops affect economic development only through institutions or policies? We test the endowment, institution, and policy views against each other us...

2013
C. S. T. Daughtry J. C. Cochran S. E. Hollinger

Knowledge of when critical crop stages occur and how the environment affects them should provide useful information for crop management decisions and crop production models. This research evaluated two sources of data for predicting dates of silking and physiological maturityof corn (Zea mays L.). Initial evaluations were conducted using data of an adapted corn hybrid grown on a Typic Agriaquol...

2017
Ranjan Advani

—The results of about 12 years' study deals with rodent damage to several annual and perennial crops of India including cereal, vegetable, fruit, plantation and other cash crops. The rodent species composition in order of predominance infesting different crops and cropping patterns percent damages and cost effectiveness of rodent control operations in each crop and status of rodent management b...

Journal: :Trends in plant science 2017
Jeppe Thulin Østerberg Wen Xiang Lene Irene Olsen Anna Kristina Edenbrandt Suzanne Elizabeth Vedel Andreas Christiansen Xavier Landes Martin Marchman Andersen Peter Pagh Peter Sandøe John Nielsen Søren Brøgger Christensen Bo Jellesmark Thorsen Klemens Kappel Christian Gamborg Michael Palmgren

The domestication of new crops would promote agricultural diversity and could provide a solution to many of the problems associated with intensive agriculture. We suggest here that genome editing can be used as a new tool by breeders to accelerate the domestication of semi-domesticated or even wild plants, building a more varied foundation for the sustainable provision of food and fodder in the...

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