what is the impact and significance of salination on plant growth in soil or wate?r?
814293
its bad, except for beach plants, they mostly kick it
626009
It makes them grow too fast and bloom.\n\nNitrates such as potassium nitrate (saltpeter) and ammonium nitrate are important nitrogen carriers in fertilizers; lesser amounts of calcium nitrate, magnesium nitrate and sodium nitrate are applied. These nitrates must be used quickly by plants because they are easily lost through leaching or denitrification by bacteria. Nitrate pollution has become an environmental issue in rivers and oceans.  High levels of nitrate in water can potentially cause the death of fish. Over 30PPM of nitrate can inhibit growth, impair the immune system, cause stress, and reduce energy levels. The principal pathway of entering aquatic systems is through surface runoff from agriculatural or landscaped areas which have received excess nitrate fertilizer. After entering the receiving waters nitrates also can induce algal blooms and eutrophication, causing other ecosystem modification in addition to the mortality effects stated above.
611075
I'm assuming you are extracting from an aqueous solvent?  Preferably, you want to increase the polarity of the aqueous solution, such that the solute has less affinity for water than it would for the organic solvent.  This can be done by "salting" the water (increasing the ionic strength by adding an inert salt, a la NaCl).  You then extract the solute with your organic solvent of choice, usually using smaller aliqouts more frequently vs. larger aliqouts (deals with partition coefficient, or how much will get extracted vs. how much remains in the water).  After extraction, the organic solution is usually dried (more often than not by MgSO4 or Na2SO4) and then the solvent is distilled off to yield hopefully pure product.
1048377
Look at chemical reactions to snowfall and extreme cold snaps.  You'll find a lot of useful information if you know how to interpret the biological data, such as how the decomposition of plants affects soil consistency.
942614
water is an important component that contribute to plant growth..water can liquidify the chemical substances inside the plant and the nutrient can be readily absorb by the flowers....water reach flowers by the transpirational pulls
81157
I heard plants respond to the vibrations or electronic \nimpulses the music emits.I watched a show on this where\nthere hooked up measuring electric impulses or what have to \nplants and that they do respond.I am not certain of any developent improvements..Because it also depends on the \nenviromental adaptation of the lineage from which the\nparticular plants seed came.
386434
http://www.ebroadcast.com.au/lookup/encyclopedia/so/Soil_pH.html\n\nSoil pH\n\nSoil pH is an indication of the alkalinity or acidity of soil. It is based on the measurement of pH, which is based in turn on the concentration of hydrogen ions (H+) in a water or salt solution.\n\n\nWhen in balance (pH 7) the soil is said to be neutral. The pH scale covers a continuum ranging from 0 (very acidic) to 14 (very alkaline or basic). It is however uncommon to find soils at either extreme of this range. Under many conditions soils tend to become more acid or alkaline over time if steps are not taken to maintain a balance. \n\npH is important for the organic gardener for several reasons, including the fact that many plants and soil life forms prefer either acid or alkaline conditions, that some diseases tend to thrive when the soil is alkaline or acidic, and that the pH can affect the availability of nutrients in the soil. \n\nTable of contents [showhide]  \n1 Nutrient availability in relation to soil pH \n2 Soils and acidity \n3 Soil life and pH \n4 pH and plant diseases \n5 Determining pH \n6 Altering soil pH \n7 See also \n \n \n\n\n\nNutrient availability in relation to soil pH \nThe majority of food crops prefer a neutral or slightly acidic soil, because the solubility of most nutrients necessary for healthy plant growth is highest at at pH 6.3-6.8. Some plants however prefer more acidic (e.g., potatos, strawberries) or alkaline (brassicas) conditions. \n\nWhen the pH falls below 5.5, most major plant-nutrient minerals (those needed in substantial quantities to promote healthy plant growth include nitrogen (N), phosphorus (P), potassium (K), sulphur (S), magnesium (Mg), and calcium (Ca)) and some micronutrients[?] (elements important to plant growth in very small amounts) become insoluble and hence unavailable for uptake by plant roots. \n\nMany cationic (positively charged) nutrients such as zinc (Zn2+), aluminium (Al3+), iron (Fe2+), copper (Cu2+), cobalt (Co2+), and manganese (Mn2+) are soluble and available for uptake by plants below pH 5.0, although their availability can be excessive and thus toxic in more acidic conditions. In more alkaline conditions they are less available, and symptoms of nutrient defficiency may result, including thin plant stems, yellowing (chlorosis[?]) or mottling of leaves, and slow or stunted growth. \n\npH levels also affect the complex interactions among soil chemicals. Phosphorus (P) for example requires a pH between 6.0 and 7.0 and becomes chemically immobile outside this range, forming insoluble compounds with iron (Fe) and aluminium (Al) in acid soils and with calcium (Ca) in calcareous soils. \n\nThis table indicates the availability of several nutrients at various pH values: \n\n  Acid  Neutral Alkali  \n  4   4.5 5   5.5 6   6.5 7   7.5 8   8.5 9   9.5 10 \nnitrogen, N       \nphosphorus, P         \npotassium, K         \ncalcium, Ca       \nmagnesium, Mg       \nsulfur, S     \niron, Fe     \nmanganese, Mn       \nboron, B       \ncopper, Cu       \nzinc, Zn       \nmolybdenum, Mo     \n\n\n\nSoils and acidity \nUnder conditions in which rainfall exceeds evapotranspiration (leaching) during most of the year, the basic soil cations (Ca, Mg, K) are gradually depleted and replaced with cations helds in colloidal[?] soil reserves, leading to soil acidity. Clay soils often contain Fe and hydroxy Al, which affect the retention and availability of fertilizer cations and anions in acidic soils. \n\nSoil acidification may also occur by addition of hydrogen, due to decomposition of organic matter, acid-forming fertilisers, and exchange of basic cations for H+ by the roots. \n\nSoil acidity is reduced by volatilization and denitrification of nitrogen. Under flooded conditions, the soil pH value increases. In addition, nitrate fertilizers containing cations such as Ca, K, or Na also increase the soil pH value. \n\n\nSoil life and pH \nA pH level of around 6.3-6.8 is also the optimum range preferred by
339755
It's mostly a desert so yeah I would think water and ability to grow anything would be fairly important.\n\nAdmit it.  You want us to help you answer the essay question on your take home exam don't you!!!
1020952
Saturated sodium chloride solution is highly polar, and will help to drive large amounts of water and other non-organic materials out of the organic solution (water will have a greater affinity for the salt solution, and will also attempt to dilute the salt).  The last traces of water will be grabbed by the anhydrous calcium chloride (though magnesium sulfate or sodium sulfate work better, as they are usually more granular).
816638
Regular irrigation will often cause salts to rise to the surface.  To get rid of them it is necessary to flush out of the rooting zone occasionally by irrigating longer and deeper than usual.\n\nFertilizers also contain salts, the measurement of salt in the fertilizer is called the salt index.  I recommend using fertilizers with a salt index of less than 100.
854751
Abscisic acid causes the stomates to close during times of water stress thus reducing the plant's water loss. It also increases the hydraulic conductivity of the roots.
626885
auxines will have a positive effect on the root growth and is especially usefull for regeneration (like you take a leaf, but it in water, add auxines, and after a while roots may appear and you have a new plant (a clone))
1014007
There really is not much good information about the effect of music on plants because all attempts to do controlled studies on plants and music result in "no difference". Any "differences" between a music treatment and a no-music control (or other-music treatment) in pseudoscience studies can almost always be attributed to some difference in other variables in the project which have not been suitably controlled (light, water, fertilizer, soil type, humidity, etc.)
1103871
sunlight stimulates photosynthesis and larger amts produce more growth, lesser amts less growth.......Seasonal light changes inc growth in the spring as light hours incresae, and Fall lesser light as days dec in length slow growth. Same goes for daily changes......Strings of Rainy days vs sunny days!!!! Look outside if you live on the Eastern coast of the US......
825982
there are tons of factors affecting plant growth. one of them is the kind of soil for the plant to grow. some plants need a specific type of soil in order to grow properly. another factor is the sunlight and food it gets. it needs the propwer nourishment for the palnt to fluorish. next is the nutrients that a plant need. some may need medicines to help them grow better.
539083
Microorganisms (soil bacteria) are the most important component of any soil. They dissolve rock particles and release nutrients to the plants through decomposition. The microorganisms release carbon dioxide gas into the film of water surrounding soil particles, making the water slightly acid. This causes it to react with the rock particles and dissolve them, providing a slow, steady release of nutrients.\n\nAll microorganisms decompose decayed vegetation or other microorganisms. The decayed vegetation, called humus, is the basis for soil life. Without humus, we get no naturally formed nitrogen, and plants become weak and more susceptible to insect attack. Humus has other beneficial effects besides feeding soil microorganisms. It mechanically loosens the soil itself and creates a texture called good tilth.\n\nWhen soil has good tilth, it is soft, porous and easy to work and crumbles easily into fine pieces. Water penetrates the soil better and the soil also holds more water.\n\nTilth prevents the formation of hard crusts on the soil's surface. It allows plants to put out larger root systems easily. When there is lots of air in the soil, microorganisms flourish and speed mineral release. Good tilth allows delicate seedlings to get a good start. Focusing on the basics: \n\nAbundant Soil Microorganisms \nImproving Humus and Tilth \nis the first step and the foundation for long-lived successful reclamation, and restoration of the soil ecosystem.
841552
Some water is essential for all plant growth, though necessary amounts vary for individual species. Too little water will cause the plant to wither and die, and too much water will waterlog the roots and rot them, killing the plant.