نتایج جستجو برای: crop sector

تعداد نتایج: 184772  

Journal: :پژوهش آب در کشاورزی 0
فاطمه کاراندیش استادیار گروه مهندسی آب دانشگاه زابل. ام البنی توراج زاده دانش آموخته ی کارشناسی ارشد آبیاری و زهکشی گروه مهندسی آب دانشگاه زابل.

population growth as well as global fresh water shortage problem have necessitated the use of unconventional water resources in agricultural sector, as the largest consumer of fresh water, especially in arid and semi-arid regions. in this study, the effect of four irrigation methods on yield, uptake of water and important nutrients, and the salt accumulation in soil was investigated using a com...

2002
Brian D. Wardlow Stephen L. Egbert

Agricultural practices are continually changing at various spatial and temporal scales in response to local management decisions and environmental factors. However, few regional scale land use/land cover (LULC) classifications have focused on characterizing the agricultural sector, particularly on a regular basis to reflect croprelated land use changes that occur from year to year. More detaile...

Journal: :Global change biology 2014
Alex C Ruane Sonali McDermid Cynthia Rosenzweig Guillermo A Baigorria James W Jones Consuelo C Romero L Dewayne Cecil

Climate change is projected to push the limits of cropping systems and has the potential to disrupt the agricultural sector from local to global scales. This article introduces the Coordinated Climate-Crop Modeling Project (C3MP), an initiative of the Agricultural Model Intercomparison and Improvement Project (AgMIP) to engage a global network of crop modelers to explore the impacts of climate ...

Journal: :Enthusiastic 2023

Farmer Exchange Rate (FER) in Indonesia is very concerning. According to BPS data, there are various regions that experience increases and decreases every year. The goal of this paper predict the food crop sector using Principal Component Regression (PCR) since multicollinearity data. Therefore, with PCR method data based on 33 different provinces can determine supporting factors. model used he...

Journal: :Administrative Sciences 2023

This study aims to determine the importance of factors affecting supplier selection in pesticide distribution sector as a global emerging market and present decision-making model for corporate marketing strategy. Specifically, comparative between suppliers retail experts was conducted compare differences perception according organizational characteristics. Based on previous studies, based AHP m...

Journal: :Applied Economics 2021

In this article, we investigate the investment behaviour of French crop farmers between 2002 and 2014, with a focus on their adjustments to prices farm output prices, which became more volatile after 2007. We estimate an econometric model accounting for heterogeneity allowing change in behavioural parameters Our results show evidence significant large investments over time, related farmers’ pre...

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
فرشید اشراقی استادیار گروه اقتصاد کشاورزی دانشگاه علوم کشاورزی و منابع طبیعی گرگان نرگس خیری کارشناس ارشد اقتصاد کشاورزی دانشگاه علوم کشاورزی و منابع طبیعی گرگان ابراهیم حسن پور استادیار سابق دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران

agriculture sector has had a significant grow thing role in the iran, but growth and development in this sector is not possible without a suitable risk management. this study has tried to predict and measure the risk from changing weather condition on agriculture products of gorgan county using mont carlo stimulation as one of the powerful tools on risk analysis. the results showed that the hig...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1380

در این پایان نامه یکی از انواع راهبردی موشک از محل شلیک تا هدف مورد بحث قرار می گیرد. روش هدایت مزبور از نوع هدایت پیش تنظیم می باشد. در پایان نامه این روش هدایت در موشکهای کروز با سکوی پرتاب متحرک مورد بررسی قرار می گیرد. بدین منظور معادلات حرکت هدف و موشک نوشته شده و چگونگی تعیین مقادیر اولیه شامل زوایای ‏‎sector turn, pitch, yaw‎‏ ارتفاع پرواز و زمان شروع جستجو توسط رادار مطرح می شود.

2011
Cathleen Ma Raj Deepika Alexander A Myburg Martin Ranik Steven H Strauss

Background Despite its importance as a widely-planted crop tree, eucalypt species and hybrids are relatively difficult to micropropagate, culture and genetically transform in vitro. Compared to other plant species, few non-commercial laboratories are proficient at Eucalyptus tissue culture and transformation. We have undertaken to establish and transform several eucalypt clones in the laborator...

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