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Showing 1 to 20 of 25 for “"Nutrient solutions"”.
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Investigation of nutrient solutions for the hydroponic growth of plants
… supply of elements to the plant. In hydroponics, nutrient can be delivered via a solution that is supplied to the growing plant or as a seed coat or treatment that is applied to the seed before sowing and germination. The form in which the nutrients are supplied to the plant influences their …
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The Effect of Plant Nutrition on the Reproductive Rate and Susceptibility to Malathion of Two Strains of the Two-Spotted Spider Mite, Tetranychus telarius (L.)
… plants were grown in quartz sand and supplied nutrient solutions containing varying levels of nitrogen, phosphorus and potassium. Total nitrogen and total water soluble carbohydrate in the host plant tissue were determined by standard methods. Correlation analysis with the number of mite …
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Water and Nutrient Reuse within Closed Hydroponic Systems
… research exists on the maintenance of individual nutrient balance within the nutrient solutions of closed hydroponic systems and how this maintenance may result in reductions in water and nutrient consumption. In this study, a nutrient solution management procedure was developed to maintain …
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A ¹⁵N study of the effects of nitrate, ammonium and nitrate plus ammonium nutrition on nitrogen assimilation in Hordeum vulgare
… controlled environmental conditions. The aerated nutrient solutions contained 2mM inorganic ¹⁴N supplied as either nitrate alone, ammonium alone, a 1:1 nitrate plus ammonium mixture or a 3:1 nitrate plus ammonium mixture. After 20 days of growth ¹⁵N nutrient solutions were substituted. The plant …
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Nutritional, environmental and morphological studies on Trypanosoma ranarum
… ranarum has been accomplished in complex nutrient solutions, but growth in chemically defined media has never been attempted. The purpose of the study was to cultivate R. ranarum in “purified” bacterial media ingredients and to determine the basic nutrient requirements of the organism. …
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Effect of ammonium and nitrate on nitrogen fixation and mineral nutrition of ryegrass and uninoculated and inoculated clover grown separately and in association : A dissertation submitted in partial fulfilment of the requirements for the Degree of Bachelor of Agricultural Science (Honours) in the University of Canterbury
… clover ( Trifolium repens L.) plants, grown in nutrient solutions containing either NH₄- or No₃-N. The effect of increasing nitrate concentrations on the growth and ionic composition of ryegrass, and the growth of both uninoculated and inoculated clover, was also studied. In addition, the growth …
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Uptake and effects of Kepone on growth, respiration and photosynthesis of Chlorella sorokiniana and Chlorococcum hypnosporum
… algal species were removed from Kepone treated solutions and incubated in untreated nutrient solutions.
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Host specificity in the Rhizobium symbioses of two Aspalathus species and an invasive alien legume, Acacia saligna
… plants in soil and in tubes containing soil solutions plus nitrogen-free nutrient solutions. Soila were collected from three sites within their distribution and two from 90km outside. Both species formed nodules in all three soils from within their distribution and A. capensis in one from …
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Effects of kinetin on distribution and exudation of free sterols and free fatty acids in Arachis hypogaea L. 'Argentine' under axenic conditions
… exudates of 57-day-old peanut plants grown in nutrient solutions under gnotobiotic conditions was studied. Kinetin was applied to the roots in the culture medium five days before harvest. Upon harvesting root exudates were collected and plants divided into leaves, stems, and roots. The …
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The effect of quick freezing and fast thawing on stored seawater nutrient concentrations of dissolved inorganic phosphate, nitrate and ammonium
… to improve the quality of preserving seawater nutrients for delayed analyses, a sample of unfiltered and aged nutrient-depleted seawater was obtained from Marine and Coastal Management (M&CM) and spiked with small different volumes of standard nutrient solutions. These were prepared into 100 mL …
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Effect of Ca and pH on Disease Severity of Pink Rot Phytophthora erythroseptica in Russett Norkotah Potato Solanum tuberosum
… each variable individually using hydroponics and nutrient solutions. We assessed disease severity by assigning an Infection Coefficient (IC) to each root and stolon samples. The IC values were determined by quantifying DNA and then creating a ratio of host to pathogen DNA within root tissue. The …
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SALT EXPOSURE AND NITROGEN METABOLISM IN TOMATO (SOLANUM LYCOPERSICUM L.): IMPROVEMENT OF THE RESILIENCE TO ABIOTIC STRESS
… that partially replacing NO3− with NH4+ in nutrient solutions enhanced N assimilation, improved ion balance, and promoted metabolic adjustments in roots and leaves. This dual nitrogen strategy alleviated salinity-induced reductions in growth and development by conserving energy for …
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Anatomical, developmental and physiological aspects of silica in wheat
… of T. aestivum was reduced by silica in the nutrient solution (Si+) during the first six days of growth, compared to plants grown in solution not supplemented by silica (Si-), After a further four days Si+ plants had significantly longer roots than Si- plants. At the light microscope level, a …
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Ecology and Management of Pythium species in Float Greenhouse Tobacco Transplant Production
… roots had started to grow into underlying nutrient solutions, depending on the species of Pythium. High and low variation was observed among isolates of P. dissotocum and P. myriotylum, respectively. Pythium myriotylum co-existed with multiple other Pythium or oomycete species in the same …
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Microcosms and field bioremediation studies of Perchloroethene (PCE) contaminated soil and groundwater
… combinations and concentrations of the following nutrients: soy oil methyl esters (SOME), yeast extract (YE), glucose, lactate, methanol and cheese whey. Bioaugmentation studies used KB-1 bacterial consortium (commercially available culture containing Dehalococcoides). This culture is known to …
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Effects of CO₂ enrichment and potassium supply on growth and inorganic nutrition of chrysanthemum (Dendranthema grandiflora Tzvelev)
… research has correlated them with altered nutrient requirements and distribution. To explore the roles of CO₂ enrichment on the development of leaf abnormalities, three experiments were performed on chrysanthemum (Dendranthema grandiflora Tzvelev) plants cv 'Envy'. CO₂ enrichment and K+ …
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Nitrate and ammonium interactions in maize.
Nitrogen (N) is one of the major mineral nutrients required by a plant for its growth and development. Nitrate (NO₃⁻) and ammonium (NH₄⁺) are the predominant forms of N available to plants in agricultural soils. Plants have the ability to absorb both these forms efficiently from the soil solutions. …
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