نتایج جستجو برای: dry matter water productivity

تعداد نتایج: 886099  

Journal: :علوم دامی 0
حسن فضائلی استاد، موسسه تحقیقات علوم دامی کشور

since the last decades, hydroponic fodder production systems have been experienced in some parts of the world. during the germination process, the growth of embryo results in the rupture of the seed coat and emergence of a young plant which it reaches to about 20cm height in a week. apparently, the concept of putting one kilogram of seeds into a hydroponic system to obtaine several kilograms of...

Journal: :Proceedings. Biological sciences 2013
Jung-Eun Lee Christian Frankenberg Christiaan van der Tol Joseph A Berry Luis Guanter C Kevin Boyce Joshua B Fisher Eric Morrow John R Worden Salvi Asefi Grayson Badgley Sassan Saatchi

It is unclear to what extent seasonal water stress impacts on plant productivity over Amazonia. Using new Greenhouse gases Observing SATellite (GOSAT) satellite measurements of sun-induced chlorophyll fluorescence, we show that midday fluorescence varies with water availability, both of which decrease in the dry season over Amazonian regions with substantial dry season length, suggesting a para...

Journal: :journal of ornamental plants 2015
shahla dashtbany davood hashemabadi shahram sedaghat hoor

the aim of this study is investigation on effect of stem end splitting and geranium essential oil on vase life on quality of cut chrysanthemum (dendranthema grandiflorum l.). this experiment arranged as factorial based on rcd with 2 factors of stem end splitting at 2 levels (with splitting and without splitting) and geranium essential oil at 6 levels (0, 1, 2, 4, 8 and 10 %), with 12 treatments...

2016
Norman W.H. Mason Kate Orwin Suzanne Lambie Sharon L. Woodward Tiffany McCready Paul Mudge

Plant functional traits are thought to drive variation in primary productivity. However, there is a lack of work examining how dominant species identity affects trait-productivity relationships. The productivity of 12 pasture mixtures was determined in a 3-year field experiment. The mixtures were based on either the winter-active ryegrass (Lolium perenne) or winter-dormant tall fescue (Festuca ...

L. Cheraghvareh R. Hajiboland

Tobacco is a salt-sensitive glycophyte crop species. In this work effect of silicone (Si) supplementation (1 mM as Na2SiO3) was studied in Nicotiana rustica L. cv. Basmas grown hydroponically in growth chamber under control, low (25 mM) and high (75 mM) NaCl concentration for two weeks. Dry matter production of leaves was depressed by salinity level as low as 25 mM and higher salt concentration...

Growth indices are useful for interpreting plant reaction to environmental factor. Using Growing Degree Days (GDD) for estimating the phonological growth stages is more valid instead of calendar time. In order to study effect of salinity on growth analysis in three different plantago species, a greenhouse experiment was conducted in Vali-e-Asr University of Rafsanjan in 2009. The study was carr...

Aligholi Ramin Babak Jelodari Hossein Tajik, Shahram Nozad Sina Ramin Zohreh Eftekhari

Lipids in liver wet and dry matter, liver moist and dry matter and their relationships were investigated based on species, sex and age in cows, buffaloes, sheep and goats. Mean percentage of lipids in liver wet and dry matter and liver dry matter in cows were 3.60%, 1.10%, 29.70%, and for buffaloes were 5.30%, 1.55%, 29.20%, sheep 3.00%, 0.83%, 27.90%, and goats 2.910%, 1.55% and 28.40%, respec...

Journal: :بوم شناسی کشاورزی 0
طاهره حمیدی رضا حمیدی

greenhouse and laboratory studies were conducted to examine the allelopathic effects of water extracts of pigweed (amaranthus retroflexu l.) leaf, stem, root and flower at different growth stages on canola seed germination and seedling growth. water extracts of leaf, stem, root and flower as individually, binary, ternary and quadri mixtures at 0, 50 and 100% concentrations were made and their e...

Journal: :Annals of botany 2010
Laíse da Silveira Pontes Frédérique Louault Pascal Carrère Vincent Maire Donato Andueza Jean-François Soussana

BACKGROUND AND AIMS Although plant functional traits (PFTs) appear to be important indicators of species' responses to land use changes, there is no clear understanding of how the variations in traits and their plasticity determine variations in species performance. This study investigated the role of functional shoot traits and their plasticity for variation in above-ground net primary product...

In order to evaluate dry matter remobilization to seeds in the winter type rapeseed cultivars grown under drought stress conditions, an experiment was carried out using a randomized complete block design arranged in a split plot with three replicates in Shahre-Qods, Iran, in the 2011-2012 growing season. Irrigation treatments including control (irrigation after 80 mm evaporation from evaporatio...

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