نتایج جستجو برای: less than 625 individuals per hectare

تعداد نتایج: 2634328  

2007
Siân Mooney Ken Gerow John Antle Susan Capalbo Keith Paustian

Several studies have suggested that geostatistical techniques could be employed to reduce overall transactions costs associated with contracting for soil C credits by increasing the efficacy of sampling protocols used to measure C-credits. In this paper, we show how information about the range of spatial autocorrelation can be used in a measurement scheme to reduce the size of the confidence in...

1999
Y. A. Papadopoulos

22-151 ABSTRACT The main objective of this study was to evaluate the effectiveness and improved productivity of reduced tillage pasture renovation methods in the establishment of triple species pasture mixtures into an existing naturalized stand. Experimental treatments, 2 (low and high stocking rates) by 2 (frostand sod-seeding methods) factorial with an additional non-renovated pasture contro...

Journal: :یافته های تحقیقاتی در گیاهان زراعی و باغی 0
محمد زمانیان مؤسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج محمد اکبری راد وحید رهجو محمدرضا عباسی اردلان مهرانی علی مقدم شیرین یغموری

in order to select and release of nassim, a new cultivar of red clover, the researcher carried out the researches at the field of seed and plant improvement institute (spii) in karaj and some research stations such as shahrekord, sanandej, kermanshah, arak, gorgan during years 1996-2006. the experimental research was carried out design rcbd with six treatments and four replications during years...

2005
David Pimentel Tad W. Patzek

Energy outputs from ethanol produced using corn, switchgrass, and wood biomass were each less than the respective fossil energy inputs. The same was true for producing biodiesel using soybeans and sunflower, however, the energy cost for producing soybean biodiesel was only slightly negative compared with ethanol production. Findings in terms of energy outputs compared with the energy inputs wer...

Journal: :اقتصاد و توسعه کشاورزی 0
علیه آزادگان فاطمه رستگاری پور محمود صبوحی

in farming activities, various resources and inputs are utilized to produce agricultural products.. one of the most important goals of agricultural managers and programmers is to assess the optimal resource allocation for designing an appropriate cultivation pattern. mathematical programming is a common approach to achieve the optimal pattern. in this study, the two approaches of fuzzy de-novo ...

ژورنال: علوم آب و خاک 2015
احمدآلی, جمال, انوری, کامران, تاجبخش, مهدی, صمدوند, سارا,

An experiment was performed at the Miyandoab Agricultural Research Station to study yield and water use efficiency of furrow and tape irrigation systems in one-row and two-row planting patterns, and to investigate density of grain corn SC704. The experimental design was a completely randomized block arranged in Strip Split Plots with three replications in 2010. Irrigation treatments were applie...

Journal: :Annals of The Royal College of Surgeons of England 2009

Journal: :Deutsches Aerzteblatt Online 2013

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم انسانی 1393

this research study aimed to investigate the relationship between field-dependence/independence cognitive style and vocabulary learning strategies among iranian efl learners. ninety participants majoring in english translation at arak university were chosen. the participants were classified into two groups of field-dependent and independent based on the results of group embedded figure test (ge...

Journal: :Annals of Emergency Medicine 2016

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