نتایج جستجو برای: global hectare

تعداد نتایج: 450841  

Journal: :Revista Brasileira de Ciências Agrárias - Brazilian Journal of Agricultural Sciences 2007

Journal: :Agroplantae: Jurnal Ilmiah Budidaya dan Pengelolaan Tanaman Perkebunan 2023

Oil palm is Indonesia's mainstay plantation commodity as a source of income for farmers and companies foreign exchange. plant with the highest productivity vegetable oil production age beyond 30 years. To evaluate old plants palm, comparative study was carried out based on number different populations per unit area ​​land. The calculation in form fresh fruit bunches (FFB) population areas numbe...

Journal: :Frontiers in Environmental Science 2021

In recent decades, climate change induced by enhanced global warming is one of the biggest challenges at level. Agriculture sectors significantly contribute to total anthropogenic greenhouse gas emission atmosphere. Wheat and maize, cultivated globally, consumed in different forms, are considered as crucial staple cereal for ensuring food security population. The management practices involving ...

Journal: :فصلنامه علمی اکوفیزیولوژی گیاهان زراعی 0
آتنا نجفی تیرتاشی دانشجوی کارشناسی ارشد زراعت دانشگاه آزاد اسلامی واحد آیت الله آملی مهران محمودی استادیار گروه زراعت دانشگاه آزاد اسلامی واحد آیت الله آملی،آمل،ایران

in order to determine the effect of potassium silicate solution with elements of macro and micro elements on agronomic traits of rice, tarom, a field experiment in paddy fields galogah city - village marbles of the crop year 2014 was conducted. the results showed that the highest plant height (013/180 cm) to 2 liters per hectare and no interaction effects of potassium silicate elements. the res...

2013
Thomas F. Waters Michael T. Doherty THOMAS F. WATERS MICHAEL T. DOHERTY CHARLES C. KRUEGER

—We made estimates of annual production of stream trout in two Lake Superior tributaries in northeastern Minnesota in 1977-1978. The Caribou River (total alkalinity, 34 mg/L as CaCO3) drains pan of the north shore of Lake Superior in an igneous rock geology. The Blackhoof River (total alkalinity, 83 mg/L) drains glacial drift and lake clay at the western end of Lake Superior. Annual production ...

ژورنال: علوم آب و خاک 2015
آزادنیا, فرزاد, خسروی, حسن, ممبنی, مریم, کرمشاهی, عبدالعلی, گرایی, پرویز,

Desertification is currently a big problem in many countries, especially in developing countries, and includes natural processes and improper human activities. The present study was conducted to evaluate the potential of desertification with an emphasis on water, climate and soil criteria using IMDPA Model in Abbas plain, Ilam province with an area about 18028.8 hectare. Geometric averages for ...

بیات, محمود, حسینی یکانی, سید علی, حمیدی, سیده کوثر, فلاح, اصغر,

Iran's northern forests, which are mainly located on the northern slopes of Alborz Mountains, are important due to their excellent features. Accordingly, studying the dynamic of forest communities and their growth status can help planners and executive managers. One of the basic information for the management and sustainable use of forests is forest stand volume (volume and number). In fact, th...

2004
A. Ortega-Rubio H. Romero C Arguelles A. Naranjo R. Aguilar F. Salinas A. Rodriguez V. Serrano A. Castellanos

At the Northwest coast of Mexico the severely limited freshwater supply, and the geographic isolation determines the scarcity of productive activities. Specially at Baja California Sur. Aquaculture is a major productive alternative for the economic development of this State. Despite the aridity, the natural vegetation of Baja California Sur is diverse and structurally complex with a high percen...

2007
Thomas Masterson J. Mohan Rao

This essay assesses the relationship between farm size and productivity. Both parametric and nonparametric methods are used to derive efficiency measures. Smaller farms are found to have higher net farm income per hectare, and to be more technically efficient, than larger farms. JEL Classifications: Q12, O12

2017
Jiri Masek Petr Novak Algirdas Jasinskas

Combine harvesters have a very important task in grain crop harvesting. Combine harvesters must fulfil lot of technological requirements regarding the field conditions, crop type, as well as the quality performance and optimal costs. The problem is that it is the main harvesting technology of cereals in the world and it has seasonal character of work, which has to be done in a relatively short ...

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