نتایج جستجو برای: 1 maximum was 21179 mj ha

تعداد نتایج: 5595690  

Journal: :Forest Science and Technology 2022

Clonal teak plantation has been extensively developed in Java and providing a purposeful contribution to improve the productivity of state forests. It also plays crucial role climate change mitigation serves as primary source renewable energy. However, information about its stand dynamics rarely documented. This study investigated growth, biomass, carbon stock, energy storage along an age serie...

Asadollah Akram Behzad Elhami Majid Khanali Seyed Hashem Mousavi-Avval

In the present study, the energetic and economic modeling of lentil and chickpea production in Esfahan province of Iran was conducted using adaptive neuro-fuzzy inference system (ANFIS) and linear regression. Data were taken by interviewing and visiting of 140 lentil farms and 110 chickpea farms during 2014-2015 production period. The results showed that the yield and total energy consumpti...

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...

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: :پژوهش آب در کشاورزی 0
محمد خرمیان عضو هیئت علمی مرکز تحقیقات کشاورزی صفی آباد دزفول سعید برومند نسب استاد دانشگاه شهید چمران اهواز سید رضا اشرفی زاده عضو هیئت علمی مرکز تحقیقات کشاورزی صفی آباد دزفول

the objective of this study was to evaluate the effect of different levels of irrigation and nitrogen fertilizer on nitrate movement, yield, and water use efficiency (wp) of corn in no-till planting method. the research was conducted in two years as a randomized complete block design arranged in a split block treatment design with three replicates in the safiabad agricultural research center. i...

Journal: :BMJ 1993
N R Poulter J E Sanderson A V Thompson P S Sever C L Chang

case-control study of leukaemia and lymphoma among young people near Sellafield nuclear plant in West Cumbria. BMJ 1990;300:423-9. 17 Gardner MJ. Paternal occupations of children with leukaemia. BMJ 1992;305: 715. 18 Beral V. Leukaemia and nuclear installations. BMJ 1990;300:41 1-2. 19 McLaughlin JR, Anderson TW, Clarke EA, King W. Occupational exposure of fathers to ionizing radiation and the ...

Journal: :مهندسی بیوسیستم ایران 0
رضا اسفنجاری کناری دانشجوی دکتری اقتصاد کشاورزی، دانشگاه زابل مهدی شعبان زاده دانشجوی دکتری اقتصاد کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران پریناز جانسوز دانشجوی دکتری اقتصاد کشاورزی، دانشکدۀ کشاورزی، دانشگاه زاهدان احمد امیدی دانشجوی دکتری مکانیک ماشین آلات کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

with the increasing world population and limitations on arable land, increasing the yield per unit is one of alternatives human food supply. greenhouse cultivation as one ways of increase the performance can arrive this purpose. but the energy restriction of another human challenges, so that increase the performance without considering energy consumption almost appears to be meaningless. due to...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Arjen Y Hoekstra Winnie Gerbens-Leenes Theo H van der Meer

The water footprint (WF) of a product refers to freshwater consumed during production (1). We calculated bioenergy WFs assuming crop water requirements are met (2); Jongschaap et al. (3) correctly point out that this is not always true, giving an example for jatropha grown under poor, rainfed conditions in South Africa. Yields are generally expressed in ton/ha, but, when water is scarcer than l...

G.R. Mohsenabadi J. Aminifar M. Galavi M. Ramroudi

ABSTRACT- Declining land productivity associated with decreasing soil organic carbon and nutrients is a significant issue in monoculture production. The field experiment with different rates of fertilizer systems (60 kg ha-1 N + 100 kg ha-1 P, 300 kg ha-1 Bio-organic (organic fertilizer), 3 kg ha-1 Bioumik (biofertilizer), 30 kg ha-1  N + 50 kg ha-1 P + 150 kg ha-1 Bio-organic fertilizer and 30...

2006
Randy Fishman Juana Moreno Mark Jarrell

To facilitate the search for new magnetic semiconductors with high transition temperatures TC, we use dynamical mean-field theory to evaluate TC for a double-exchange system with general angular momentum j 1⁄4 1=2; 3=2; 5=2; . . . . For simplicity, we assume that there is one local moment per site and that the Hund’s coupling Jc between the local moments and the charge carriers (with undoped ba...

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