نتایج جستجو برای: acceptable yield loss

تعداد نتایج: 690899  

Journal: :Journal of orthopaedic trauma 2013
Boris A Zelle Mohit Bhandari Alvaro I Sanchez Christian Probst Hans-Christoph Pape

BACKGROUND Loss of follow-up represents a potential source of bias. Suggested guidelines propose 20% loss of follow-up as acceptable. However, these guidelines have not been established through scientific investigations. The goal of this study was to evaluate how loss of follow-up influences the statistical significance in a trauma database. METHODS A database of 637 polytrauma patients with ...

حاج قاسم, حسن, دل آرام فریمانی, سعید, عرفانیان, علیرضا, علی احمدی, مجیدرضا,

In this paper, design, analysis and fabrication of a low loss capacitive RF MEMS shunt switch, which made on the coplanar waveguide transmission line and alumina substrate in the frequency band of 40-60 GHz, is presented. The CPW is designed to have 50Ω impedance matching on the alumina substrate. Then the desired switch is designed with appropriate dimensions. Afterward the important par...

Nejatkhah, , Rafiei, , Sarshad, , Talei, , Torabi, ,

In order to investigate the effect of water deficit tension on different growth stages on yield, yield components and produced grain quality of sorghum seeds cultivars,  an experiments was performed as split plots based on randomized complete blocks design with four replications in Isfahan Ghiam Cultivation and Cattle Farm Company in 2017. The main factor including irrigation cut at four levels...

2004
J. W. Singer

Timing, intensity, and frequency of biomass removal PREDICTING YIELD LOSS IN affects soybean yield. Yield reduction is less sensitive INDETERMINATE SOYBEAN FROM to biomass removal during vegetative growth because soybean can develop new leaf area that can compensate POD DENSITY USING SIMULATED for temporarily reduced assimilatory capacity. Singer DAMAGE STUDIES (2001) reported that yield reduct...

2006
Martin M. Williams John B. Masiunas

John B. Masiunas Department of Natural Resources and Environmental Sciences, University of Illinois, 1201 West Gregory Drive, Urbana, IL 61801 Field experiments were conducted to quantify functional relationships between giant ragweed density and sweet corn yield and ear traits. A rectangular hyperbolic model was fit to yield loss measured in terms of marketable ear mass, appropriate for the pr...

Journal: :به نژادی نهال و بذر 0
عزت الله فرشادفر e. farshadfar college of agriculture, razi university, kermanshah, iran.دانشکده کشاورزی دانشگاه رازی، کرمانشاه جواد جوادی نیا j. javadinia

responses of twenty chickpea genotypes to drought stress were evaluated in the farm of college of agricultutre, razi university, kermanshah, iran in 2006-2007. the experiment was carried out in randomized complete block design with three replications under two water stress and non-stress conditions. the results showed significant differences among the genotypes for most of the traits. maximum y...

Journal: :Archives of disease in childhood 2008
Mary S Fewtrell Kathy Kennedy Atul Singhal Richard M Martin Andy Ness Mijna Hadders-Algra Berthold Koletzko Alan Lucas

There is increasing evidence that health and development in adult life is influenced or ‘‘programmed’’ by factors, including nutrition, operating during foetal life and infancy. Early nutrition in a variety of animal species, including primates, has been demonstrated to influence later outcomes, including the likelihood of cardiovascular disease, learning and behaviour problems and longevity (s...

Journal: :تولید گیاهان زراعی 0
محسن باقری بخش اصلاح و تهیه نهال بذر مرکز تحقیقات کشاورزی و منابع طبیعی گلستان عثمان محمد یاواروف دانشگاه تاجیکستان معصومه صالحی مرکز ملی تحقیقات شوری

in order to evaluate the delay cropping on yield and yield component of two canola cultivars and selecting the best genotype and row spacing, an experiment was conducted at three years (2007, 2008 and 2009) in gorgan research station. this experiment was arranged in spilt-factorial based on randomized complete block design with four sowing dates (28 oct., 12 and 28 nov. and 12 dec.) as main plo...

Journal: :Horticulturae 2022

Lettuce is one of the most consumed leafy greens. Depending on variety, it ready for harvesting 40–80 days after sowing, and therefore several growth cycles can be concluded within a growing season. Due to its high market standards, lettuce may require intensive management. This study implemented critical period weed interference (CPWI) trial understand at which moment cropping cycle weeds tole...

2013
C. L. Reese

Remote sensing has been proposed as a method for implementing an inseason spring wheat (Triticum aestivum) nitrogen (N) fertilization program. However, in fields where yields are influenced by both water and N stress, accurate N recommendations require that that the N and water stress signals be separated from each other. The objective of this study was to determine the impact of water and N st...

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