نتایج جستجو برای: corn farmers

تعداد نتایج: 62870  

کریمیان, نجف ‌علی, رونقی, عبدالمجید , نوشاد, حمید ,

Nitrogen fertilizer application for corn (Zea mays L.) based on available N of soil can decrease the need to N fertilizer and, consequently, reduce the risk of environmental pollution, especially that of groundwater and drinking water. The objectives of this study were i) determining soil N03-N critical level at 4 to 6 leaf stage, ii) to study soil nitrate distribution, iii) determining N rate ...

Journal: :Sustainability 2023

The constantly changing prices of grains such as rice and corn have triggered an increasing number corn-to-rice projects. This paper takes the progress project in Northeast China a sample analyzes influencing factors based on binary selection model analysis probit method. study yields following findings: relative benefits are key affecting project. When can improve farmers’ income, their willin...

ژورنال: علوم آب و خاک 2001
کریمیان, نجف ‌علی, رونقی, عبدالمجید , نوشاد, حمید ,

Nitrogen fertilizer application for corn (Zea mays L.) based on available N of soil can decrease the need to N fertilizer and, consequently, reduce the risk of environmental pollution, especially that of groundwater and drinking water. The objectives of this study were i) determining soil N03-N critical level at 4 to 6 leaf stage, ii) to study soil nitrate distribution, iii) determining N rat...

Journal: :Science 2008
Timothy Searchinger Ralph Heimlich R A Houghton Fengxia Dong Amani Elobeid Jacinto Fabiosa Simla Tokgoz Dermot Hayes Tun-Hsiang Yu

Most prior studies have found that substituting biofuels for gasoline will reduce greenhouse gases because biofuels sequester carbon through the growth of the feedstock. These analyses have failed to count the carbon emissions that occur as farmers worldwide respond to higher prices and convert forest and grassland to new cropland to replace the grain (or cropland) diverted to biofuels. By usin...

2001
Lyubov A. Kurkalova Catherine L. Kling Jinhua Zhao

Due to payoff uncertainties combined with risk aversion and/or real options, farmers may demand a premium in order to adopt conservation tillage practices, over and above the compensation for the expected profit losses (if any). We propose a method of directly estimating the financial incentives for adopting conservation tillage and distinguishing between the expected payoff and the premium of ...

2009
Jennifer Sills WILLIAM F. LAURANCE

THE UNITED STATES IS THE WORLD'S LEADING PRODUCER OF SOY. HOWEVER, MANY U.S. FARMERS are shining from soy to corn (maize) in order to qualify for generous government subsidies intended to promote biofliel production (7); since 2006, U.S. corn production has risen 19% while soy production has fallen by 15% (2). This in turn is helping to drive a major increase in global soy prices (5), which hav...

Journal: :Journal of invertebrate pathology 2003
Phil Macdonald Stephen Yarrow

The Canadian Food Inspection Agency (CFIA) regulates environmental releases of plants with novel traits, which include transgenic plants such as Bt crops. Bt crops are regulated in Canada because they express insect resistance novel to their species. Commercialization of crops with novel traits such as the production of insecticidal Bt proteins requires an approval for environmental release, as...

2005
Ada Wossink Nicolai V. Kuminoff

Based on option value theory, we develop a theoretical model to assess the dollar compensation required for the conversion to organic farming. Our empirical model is a switching regression model with two regimes and we use county level data on organic and conventional corn and soybean production in the U.S. for the application. Assuming an interest rate of 10 percent, a conventional corn-soybea...

2000
K. P. Paudel L. Lohr

Peanut and corn are two major crops in the tri-state area of the southeast USA, an area encompassing north Florida, southwest Georgia, and southeast Alabama. Sharecroppers in this region apply higher amount of input in crop production than the average farmers. We analyzed the behavior of sharecroppers in this region with regard to their fertilizer application decisions. Two hypotheses were form...

2004
Jeffrey A. Vetsch

could be optimized using modified NT systems (including ST) and starter fertilizer. In Iowa Mallarino et al. (1999) Utilizing conservation tillage practices and increasing fertilizer N found that ST frequently increased early growth but seluse efficiency for corn (Zea mays L.) are necessary for optimizing dom increased corn grain yields compared with NT. growers’ profits and for minimizing loss...

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