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Academic literature on the topic 'Growth (Plants) Plant growing media'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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Journal articles on the topic "Growth (Plants) Plant growing media"

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TCV, Do, and Scherer HW. "Compost as growing media component for salt-sensitive plants." Plant, Soil and Environment 59, No. 5 (April 22, 2013): 214–20. http://dx.doi.org/10.17221/804/2012-pse.

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Composting has been considerably recognized as a viable management method for solid organic wastes aimed at recycling of its end-product as a potting substrate for ornamental plants. Pelargonium and Salvia as salt-sensitive plants were grown in the mixture of compost (75, 50, 25% by volume) and additives (Hygromull, Cocofiber and SPS-standard soil type 73 with 70% peat and 30% clay). Since plants may suffer from a high salt content, thus in a further experiment compost was added as a partial substitute for peat. The results of the first pot experiment reveal that the large percentage of compost in the substrate had negative effects on plant growth and nutrient uptake (N, P, K and Na). Both yield formation and nutrient uptake significantly increased and almost gained levels of those in the control in the second pot experiment when plants were grown in peat-based substrates. Especially, the growth of Salvia was significantly improved. Consequently, the compost-based media (> 50% volume of compost) cannot be recommended for salt sensitive ornamental plants, while less than 25% of compost incorporated into peat creates peat-based substrates which reasonably enhanced growth of Pelargonium and Salvia.

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Wilson, Mack A., Victor A. Khan, and Clauzell Stevens. "GREENHOUSE SOLARIZATION OF RECYCLABLE MEDIA FOR GROWING MARIGOLDS." HortScience 31, no. 5 (September 1996): 753c—753. http://dx.doi.org/10.21273/hortsci.31.5.753c.

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An experiment was conducted to determine the influence of manure and fertilizer, with and without solarization, on the growth of marigolds. Average plant height was significantly greater in media that was solarized and covered with a plastic film to retain heat. Leaf length was significantly greater in amended media with fertilizer application. Plants grown in covered media produced significantly more flower buds than those grown in noncovered media, while flower numbers were significantly greater for fertilized plants. Plant fresh and dry weights were significantly affected by covering the media during solarization and the application of fertilizer. Media amended with manure significantly affected plant fresh weight only. Flower size showed significant interactions between all factors evaluated in this study.

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Harbaugh, Brent K. "EUSTOMA GRANDIFLORUM RESPONSE TO pH OF GROWING MEDIA." HortScience 25, no. 9 (September 1990): 1107a—1107. http://dx.doi.org/10.21273/hortsci.25.9.1107a.

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Symptoms of foliar chlorosis or bleaching, interveinal chlorosis of lower leaves, leaf edge and tip necrosis, stunted growth and delayed flowering of Eustoma increased as pH decreased below 6.5 in various peat-vermiculite based media for all cultivars tested. Symptoms were evident with or without microelement amendments in the media or fertilizer. A 5×5 factorial with pH of media and fertilizer solutions ranging from 5.1 to 7.5 indicated fertilizer pH did not negate plant response to low media pH. Leaf tissue levels of Zn were elevated at low media pH and negatively correlated to plant growth and flowering characteristics, while imbalances in tissue levels of N, P, K, Ca, Mg, Fe, Mn, Cu and B appeared to be less important. Symptomatic plants grown in media with a pH from 5.0 to 5.8 had tissue levels of Zn ranging from 200 to 1200 ppm, and plants without symptoms in media with a higher pH had leaf tissue levels from 40 to 100 ppm Zn.

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Xynias, Ioannis, Antonios Koufalis, Evdokia Gouli-Vavdinoudi, and Demetrios Roupakias. "Factors Affecting Doubled Haploid Plant Production Via Maize Technique in Bread Wheat." Acta Biologica Cracoviensia s. Botanica 56, no. 2 (March 1, 2015): 67–73. http://dx.doi.org/10.2478/abcsb-2014-0022.

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Abstract The effect of two in planta factors (growth conditions, genotype) and two in vitro factors (time of embryo rescue, embryo rescue medium) on doubled haploid (DH) plant production in bread wheat via maize technique was investigated in nine F1 hybrids produced after crossing four bread wheat cultivars. During the first year one group of F1 plants was grown in a field and at the proper stage pollinated with maize pollen (sweet corn popu-lation). In parallel, a second group of F1 plants was grown in a growth chamber and pollinated as in the former group. In the second growing season the experiment was repeated but only field-grown plants were used. All the produced haploid embryos were cultured in three different media and the resulting 146 haploid plants were sub-sequently treated with aqueous solution of colchicine. Finally, 86 doubled haploid plants were obtained. We noted that the growing conditions of the parental plants and the intervening time between day of pollination and day of embryo rescue influenced the percentage of haploid embryo production. Culture medium also influenced haploid and doubled haploid plant production. The two media (MS/2, B5) were found equally effective. Most of the haploid embryos originated from the Penios × Acheloos cross, whereas most of the doubled haploid plants were produced from the KVZ × Penios cross. Doubled haploid plants were produced from all crosses.

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Faradilla, Faradilla, Sulfianto Alias, and Arini Rajab. "Adaptation of Murbei Plant of Cultures in Vitro of Peat Soil." Journal of Wetlands Environmental Management 6, no. 1 (February 13, 2019): 54. http://dx.doi.org/10.20527/jwem.v6i1.174.

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<pre><span>Silk Sarong Samarinda is a sarong typical samarinda made using imported silk thread from China. Quality mulberry plants are needed to support the cultivation of silkworms (sericulture). Quality mulberry plants are obtained by in vitro propagation techniques. The success of in vitro culture needs to be supported also by the growth medium suitable for acclimatization stage and plantlet growth. As the medium grows peat has several advantages that are light, water-binding power and high air, porous and can create a good environment for the development of plant roots. Acclimatization by using peat media done in glass house. This research uses Completely Randomized Design (RAL) method with 5 (five) kinds of growing media combined with manure, compost and charcoal husk and without fertilization as control. Peat soil media successfully used for the growth of mulberry acclimation. Of the 5 (five) growing media attempted, the best growth of mulberry plants is on peat-growing medium: manure: charcoal husk (1: 1: 1) until 12 weeks after planting (MST) the addition of the number of shoots, the addition of the number of leaves as well as to the growth of plant height where at that height mulberry plants ready to be planted in the field.</span></pre>

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Cardoso, Guillermo, Roger Kjelgren, Teresa Cerny-Koenig, and Rich Koenig. "(61) Pot-in-pot Production of Intermountain West Native Herbaceous Perennials." HortScience 40, no. 4 (July 2005): 997D—997. http://dx.doi.org/10.21273/hortsci.40.4.997d.

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Low water landscapes are increasing popular and important in the urban areas of the Intermountain West (IMW). Perennial wildflowers are an essential part of low water landscapes, and are a dominant plant type in IMW native habitats. We compared pot-in-pot (PIP) vs. conventional above-ground (CAG) production of six IMW native wildflower species, Mirabilismultiflora, Aquilegia caerulea, Penstemon palmeri, Polemonium foliosissimum, Sphaeralcea grossularifolia, and Penstemonstrictus in #1 (4-L) containers. Media temperature, container-plant water loss, stomatal conductance, and growth were measured during two production cycles per year over 2 years. Growing medium temperatures in the PIP system averaged 10 °C cooler than in the CAG system. Consistent with cooler growing media, overall water loss of PIP-grown plants averaged 10% lower than plants grown in the CAG production system. Lower growing media temperatures apparently affected transpiration, as stomatal conductance was about 60% higher in the PIP system as compared to the CAG-grown plants. The integrated effect of lower growing media temperatures on plant performance resulted in about one-third greater top and root growth for plants growing in the PIP system compared to those in the CAG system. Pot-in-pot production may be an economically suitable nursery system for producing IMW native perennial wildflowers by reducing water loss and enhancing growth.

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Kumar, Ramesh. "Standardization of plant species and growing medium for vertical garden system: A new urban horticulture concept." Journal of Horticultural Sciences 13, no. 1 (June 30, 2018): 108–15. http://dx.doi.org/10.24154/jhs.2018.v13i01.013.

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Vertical gardens are becoming a common component in contemporary garden designs at urban living space because of shrinking land spaces. Successful growing of plants in vertical garden systems depends up on growing container, plants chosen, growing media, etc. Hence a study was carried out in the Department of Horticulture, Annamalai University, during the year 2013, with the objectives to study the influence of Coir pith, Stockosorb and Geohumus as components of growing media along with FYM, Vermicompost and Leaf mould compost on growth and performance of ornamental plants for establishment of vertical garden and to study the performance of ornamental plants Viz., Philodendron erubescens Cv. ‘Gold’, Chlorophytum comosum Cv. ‘Variegatum’ and Polyscias fruticosa plants in wooden containers for establishment of vertical garden. The experiment was laid out in Completely Randomized Design in wooden containers, with ten treatment combinations of various growing media mixtures comprising red soil, river sand as basic components in combination with organic manures (FYM, vermicompost, leaf mould compost, coir pith) and hydrogels (Stocksorb and Geohumus). The plant growth characters and ornamental value index were observed. Among the three ornamental plants used, Polyscias fruticosa and Philodendron erubescens are performed better as ornamental plants in vertical garden system with the growing media of Red soil : River sand : Vermicompost @ 1:1:1/2 + Stockosorb(25g).

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Compton, Michael, and Timothy Zauche. "Growth of Geranium Plants in Soilless Media Containing Sphagnum Peat and Anaerobic Digestion-Derived Biosolids." HortScience 41, no. 4 (July 2006): 979C—979. http://dx.doi.org/10.21273/hortsci.41.4.979c.

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Anaerobic digestion-derived biosolids (ADB) has the potential to become a complete or partial substitute for sphagnum peat in the greenhouse and nursery industry. Bedding plant production being one of the largest segments of the floriculture industry may possess the greatest application for this new organic addendum to soilless media. An experiment was conducted in which geraniums (Pelargonium ×hortorum `Red Elite') were grown in potting mixes formulated with vermiculite and perlite plus various concentrations and combination of anaerobic digestion-derived biosolids (ADB) and sphagnum peat to determine if ADB could be used as a partial or complete replacement for sphagnum peat in soilless horticultural growing media. Plants were grown during June and July 2003–05 in the greenhouse at 75 ± 5 °F and normal light and photoperiod. Plant growth was assessed by measuring the dry weight of stem tissue. Plants were harvested when at least 50% of the total number of plants produced at least one inflorescence. Floriferousness was measured by counting the number of visible inflorescences per plant. Dry weight of plants grown in media containing ADB was greater than those grown in media containing sphagnum peat as the sole organic addendum. Plants grown in media containing ADB were also more floriferous. This study demonstrates that ADB has great potential for use as an organic addendum to horticultural growing media as a partial or complete replacement for sphagnum peat. Use of anaerobic digester-derived biosolids in horticultural growing media is a protected intellectual property and available for license through the WiSys Technology Foundation.

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Prameswari, Wuri, Welly Herman, and Umi Salamah. "Growth of Long pepper (Piper rectofractum Vahl.) with Different Growing Media Composition." PENDIPA Journal of Science Education 5, no. 3 (March 28, 2021): 345–50. http://dx.doi.org/10.33369/pendipa.5.3.345-350.

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Long pepper (Piper retrofractum Vahl.) It is one of the potential medicinal plants in Indonesia. However, information related to the cultivation of this plant is still minimal. Therefore, research needs regarding the determination of suitable planting media for the growth of herbal chilies. This experiment used a complete randomized group design (RKLT) with one treatment factor for the composition of the growing media, namely soil, soil + sand (3: 1, v / v), soil + rice husk charcoal (3: 1, v/v), and soil + manure (3: 1, v / v). Each treatment repeats six times, and each consisted of 10 plants. Data analysis using a variance. The plant material used was in soil tendrils and polybags measuring 30 cm x 30 cm as a container. NPK + Mg inorganic fertilizer with an equivalent dose of 12: 12: 17: 2. The results of the experiment showed that the composition of the different growing media affected all observed variables. The use of soil planting medium + cow manure showed the best growth results of chili herbs for plant height, the number of leaves, root length, root and canopy wet weight, and root and canopy dry weight.

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Muslimah, Yuliatul, Sumeinika Fitria Lizmah, and Nur Fayanti. "Growth Response of Melati Plant Plant (Jasminum Sambac L.) Against Types of Media Plants and Types of Growing Agents." Budapest International Research in Exact Sciences (BirEx) Journal 2, no. 2 (April 23, 2020): 188–200. http://dx.doi.org/10.33258/birex.v2i2.893.

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Propagation of jasmine plants by cuttings often experience obstacles, especially to grow roots. Proper planting media and application of growth regulators (PGR) have an important role in the growth and development of plant cuttings roots. The purpose of this study was to determine the effect of planting media types and PGR on the growth of jasmine cuttings. This research was conducted in the experimental garden of the Faculty of Agriculture, Teuku Umar University, in March - May 2019. This study used a completely randomized design (CRD) with a factorial pattern of 3x3 with three replications. The treatment factors studied were (1) the type of planting media consisted of 3 levels namely alluvial soil, sand and husk charcoal, and (2) the type of growth regulator (ZPT) consisted of 3 levels namely control (without zpt), chemical (growtone) and organic (shallot extract). F test results on the analysis of variance showed that the planting medium had a very significant effect on the number of shoots 35 and 45 HST, number of leaves 15, 35 and 45 HST number of roots, root length, percentage of live cuttings. But the planting media had no significant effect on the number of shoots of 15 DAP. Growth regulator substances have a very significant effect on the number of shoots 35 HST, number of leaves 15, 35 and 45 HST, number of roots and root length. Significantly affect the number of shoots 45 HST and percentage of live cuttings, but no significant effect on the number of shoots 15 HST. This shows that the difference in growth of jasmine plant cuttings due to different planting media does not depend on growth regulators, and vice versa.

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Dissertations / Theses on the topic "Growth (Plants) Plant growing media"

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Murphy, Carrie June. "Greenhouse production of microgreens growth media, fertilization and seed treatments /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 0.32 Mb., 89 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:1435839.

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Hanes, Scott Burton Wright Amy Noelle. "Organic matter type affects growth and physiology of native plants planted above-grade." Auburn, Ala, 2009. http://hdl.handle.net/10415/1895.

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Romagnano, Joseph F. "Aeration and mode of nutrient delivery affects growth of peas in a controlled environment." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0121104-221651.

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Thesis (M.S.)--Worcester Polytechnic Institute.
Keywords: advanced life support; ethylene; carbon dioxide; pisum sativum; root hypoxia; oxygen; bioregenerative life support. Includes bibliographical references (p. 53-57).

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Minero, Amador Adolfo. "Use of gel additives for fluid drilled tomatoes." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65355.

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Baloyi, Tlangelani Cedric. "Growth, anatomy, quality and yield of wild ginger (Siphonochilus aethiopicus) in response to nitrogen nutrition, fertigation frequency and growing medium." Diss., University of Pretoria, 2004. http://hdl.handle.net/2263/29498.

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Towler, Melissa J. "Effects of inoculum density, carbon concentration, and feeding scheme on the growth of transformed roots of Artemisia annua in a modified nutrient mist bioreactor." Digital WPI, 2005. https://digitalcommons.wpi.edu/etd-dissertations/269.

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Previous work has shown that despite the lack of oxygen limitation, transformed roots of Artemisia annua had lower biomass productivity in a nutrient mist bioreactor than in a liquid-phase bubble column reactor where the roots demonstrated metabolic signs of oxygen stress. Mathematical modeling suggested that the roots were too sparsely packed to capture mist particles efficiently and to achieve high growth rates. In this study, higher packing fractions were tested, and the growth rate increased significantly. Similarly, higher sucrose concentrations increased the growth rate. Growth kinetics for 2, 4, and 6 days showed an unexpected decrease or stationary growth rate after only 4 days for both 3% and 5% sucrose feeds. Residual media analyses indicated that carbon was not exhausted, nor were other major nutrients including phosphate. Increasing the misting frequency such that the total amount of carbon delivered from a 3% sucrose feed was equivalent to that delivered in a 5% sucrose feed showed that growth was affected by the modified cycle. These studies showed that both the concentration of carbon source and alteration of misting frequency can significantly increase growth rates of hairy roots in mist reactors.

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Goktas, Recep Kaya. "Contaminant fate and transport analysis in soil-plant systems." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39472.

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The main objective of this study is to develop a modeling methodology that facilitates incorporating the plant pathway into environmental contamination models recognizing the fact that plants are dynamic entities that regulate their life cycle according to natural and anthropogenic environmental conditions. A modeling framework that incorporates the plant pathway into an integrated water flow and contaminant transport model in terrestrial systems is developed. The modeling framework is aimed to provide a tool to analyze the plant pathway of exposure to contaminants. The model developed using this framework describes the temporal and spatial variation of the contaminant concentration within the plant as it is interacting with the soil and the atmosphere. The first part of the study focuses on the integration of the dynamics of water and contaminant distribution and plant related processes within the vadose zone. A soil-plant system model is developed by coupling soil-water flow, contaminant transport, plant life-cycle, and plant pathway models. The outcome unifies single media continuous models with multimedia compartmental models in a flexible framework. The coupling of the models was established at multiple interfaces and at different levels of solution steps (i.e. model development phase vs. numerical solution phase). In the second part of the study, the soil-plant system model is extended to cover large spatial areas by describing the environmental system as a collection of soil-plant systems connected through overland flow and transport processes on the ground surface and through lateral interactions in the subsurface. An overland flow model is integrated with the previously coupled model of unsaturated zone soil-water flow and plant life-cycle by solving the flow model equations simultaneously within a single global matrix structure. An overland / subsurface interaction algorithm is developed to handle the ground surface conditions. The simultaneous solution, single-matrix approach is also adopted when integrating the overland transport model with the previously coupled models of vadose zone transport and plant pathway. The model developed is applied to various environmental contamination scenarios where the effect of the presence of plants on the contaminant migration within environmental systems is investigated.

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Langenhoven, Petrus. "Yield and quality response of hydroponically grown tomatoes (Lycopersicon esculentum Mill.) to nitrogen source and growth medium." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/50232.

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Dissertation (PhD)--Stellenbosch University, 2004.
ENGLISH ABSTRACT: Pine sawdust-shavings (Pinus spp.) is at present a very popular soilless substrate in South African greenhouses. Growers use fresh pine sawdust-shavings as a substrate, which is biologically highly unstable. The greenhouse industry is looking at alternative organic substrates such as coco peat, which already went through a decomposition process and is more stable. A biological inactive substrate such as sand was included to compare microorganism activity with organic substrates. The main objective of this study was to compare the growth, yield and quality of hydroponically grown tomatoes in response to different growth mediums in combination with nitrogen source, irrigation frequency, period of substrate use and liming. In general the drainage water pH declined with an increase in NlLt+-N in the nutrient solution. Low pH values in the drainage water, especially when coco peat was used, had a detrimental effect on marketable yield. The drainage water pH of pine sawdustshavings increased during the growing season when 100 % N03--N was used. Due to the higher cation exchange capacity of coco peat, the drainage water electrical conductivity tends to increase more rapidly than with pine sawdust-shavings, during conditions with high temperatures and when insufficient irrigation volumes per irrigation cycle is applied. As expected the drainage water N03--N content decreased as the NlLt+-N content increased in the nutrient solution. Pine sawdust-shavings recorded a much lower N03--N and NlLt+-N content than sand and coco peat and thus supports the hypothesis that microbiological activity is higher in pine sawdustshavings, especially in the second season of substrate use. Coco peat produced the highest number of marketable fruit and yield per plant, followed by pine sawdustshavings and sand in the first season of substrate use. The number of marketable fruit and yield decreased with an increase in NlLt+-N content in the nutrient solution during production in warmer, summer conditions. Contrary to these fmdings, production in cooler, winter conditions recorded high yields when only N03--N or 80% N03--N : 20% NRt +-N was applied. The unmarketable yield increased with an increase in NlLt+-N in the nutrient solution. Visual evaluations showed that blossom-end rot (BER) was the main contributor to unmarketable yield. Increasing levels ofN03--N as nitrogen source in the nutrient solution, reduced weight loss and increased the loss of fruit firmness of tomatoes during storage. Increasing levels of N03 --N also increased fruit pH and reduced total titratable acidity. Coco peat produced fruit with a higher pH than pine sawdust-shavings. An increase in irrigation frequency affected fruit firmness negatively when coco peat was used as substrate. Different irrigation and fertigation practices are needed for different growth mediums and management needs to be adapted according to the growing season (winter vs. summer).
AFRIKAANSE OPSOMMING: 'n Mengsel van dennesaagsels en -skaafsels (Pinus spp.) word tans deur Suid- Afrikaanse kweekbuisprodusente gebruik as grondlose groeimedium. Hierdie groeimedium word nie vooraf gekomposteer nie en is dus biologies onstabiel. Die kweekbuisindustrie ondersoek tans die gebruik van alternatiewe, gekomposteerde en stabiele organiese groeimediums soos kokosveen. 'n Biologies onaktiewe groeimedium soos sand is ook ingesluit om met organiese groeimediums te kan vergelyk. Die hoof doelwit van die studie was om plantontwikkeling, opbrengs en kwaliteit van hidroponies geproduseerde tamaties te evalueer in verskillende groeimediums en in kombinasie met stikstofbron-verhouding, periode van groeimedium gebruik, besproeiingsfrekwensie en bekalking. Oor die algemeen het die pH in die dreinaat gedurende die groeiseisoen toegeneem soos die NH/-N inhoud verhoog het in die voedingsoplossing. Lae pH waardes in die dreinaat, veral waar kokosveen gebruik was, het 'n nadelige effek op bemarkbare opbrengs gehad. Die pH in die dreinaat van dennesaagsels en -skaafsels het gedurende die groeiseisoen toegeneem met die gebruik van 100% NO)--N in die voedingsoplossing. Die elektriese geleiding in die dreinaat van kokosveen neem vinniger toe gedurende toestande waarin hoë temperature en onder besproeiing voorkom, as in dreinaat van dennesaagsels en -skaafsels. Die NO)--N inhoud in die dreinaat het soos verwag afgeneem soos die NRt+-N inhoud in die voedingsoplossing toegeneem het. 'n Baie laer NO)--N en NRt+-N inhoud is by dennesaagsels en -skaafsels aangeteken wat dus die hipotese ondersteun dat mikrobiologiese aktiwiteit, veral in die tweede seisoen van gebruik, hoër is in dennesaagsels en -skaafsels as in sand en kokosveen. Kokosveen het die hoogste aantal bemarkbare vrugte en massa per plant geproduseer, gevolg deur dennesaagsels en -skaafsels en sand. Die aantal bemarkbare vrugte en opbrengs het verlaag met 'n verhoging in NRt+-N in die voedingsoplossing gedurende warm, somer toestande. In teenstelling met vorige resultate is gevind dat 100% NO)-- N of 80% NO)--N : 20% NRt+-N hoë opbrengste gelewer het gedurende koeler, winter toestande. Die onbemarkbare opbrengs het verhoog met hoër NRt+-N vlakke. Visuele waarnemings het aangedui dat blom-end verrotting die grootste bydrae tot onbemarkbare opbrengs gelewer het. 'n Verhoging in NO)--N vlakke het massaverlies beperk en die verlies in fermheid verhoog gedurende opberging. Hoër NO)--N vlakke het ook die pH van vrugte verhoog en die totale titreerbare suur verlaag. Kokosveen het vrugte met 'n hoër pH as dennesaagsels en -skaafsels geproduseer. 'n Toename in besproeiingsfrekwensie het vrug fermheid negatief beïnvloed wanneer kokosveen as groeimedium gebruik was. Verskillende besproeiings- en voedingspraktyke word benodig vir verskillende groeimediums en bestuur van die groeimediums moet aangepas word by klimaatstoestande gedurende die spesifieke produksieseisoen.

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Brown, Greta Suzanne. "The Effects of Estrogen on the Growth and Tuberization of Potato Plants (Solanum tuberosum cv. 'Iwa') Grown in Liquid Tissue Culture Media." Thesis, University of Canterbury. Biological Sciences, 2006. http://hdl.handle.net/10092/1376.

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Mammalian estrogens and estrogen-like compounds known as xeno-estrogens are being found in and excreted into the environment in ever increasing amounts. The xeno-estrogen DDE has been found at high concentrations of 1-5 mg/kg of soil (Aislabie et. al, 1997). These estrogens and xeno-estrogens are having a devastating effect on animal-life, yet little is known or understood on the effects of estrogens on plant-life. Thus it is important to determine what effects (if any) estrogens may have on plants. Other research has shown that estrogen has an effect on plants grown in vitro (Janeczko and Skoczowski, 2005). This research aims to help increase the amount of information on what effects estrogens may have on plants. In this study, the effects of mammalian estrogens (17-β-estradiol, estrone and estriol) on the growth and tuberization of potato plants (Solanum tuberosum L. cv 'Iwa') grown in liquid tissue culture medium are presented. It was found that at even 0.1 mg/L of estrogen, root growth of the plants was diminished and at 10 mg/L of estrogen, plant deformity was apparent and callus growth induced. Acid phosphatase activity of the plants was increased with the addition of 0.1 mg/L and 1 mg/L of estrogen but then decreased with the addition of 10 mg/L of estrogen. Tuber production was slightly reduced in plants treated with estrogen compared to the control.

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Snelson, Jonathan Bundy. "Plant Growth and Root Zone Management of Greenhouse Grown Succulents." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/32398.

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Effects of media, soil moisture, fertility rate, and plant growth regulators on plant growth were investigated for 13 taxa of succulents. Media: Liners were grown in five common greenhouse substrates: 80% peat, 60% bark + 30% peat moss, 80% pine bark/20% Permatil (v/v), 100% composted pine bark, or whole tree substrate until market ready. Overall, higher percentage bark mixes yielded smaller plants, with lower shoot dry weights, shoot heights and widths. Soil Moisture: Liners were potted into a 60% bark/30% peat soilless potting mix. In group 1 , irrigation to container capacity occurred when volumetric soil moisture content fell below 30%, 20%, or 10%,. Group two (seven species) irrigation thresholds were shifted to 35%, 25%, and 15%. Effects of irrigation rate were significant in three of the 13 species studied, and those effects were species-specific. Fertility Rate: Liners were potted into60% bark/30% peat substrate. Fertility reatments in group were 0, 50, 100, or 200 mg.L-1 nitrogen. Group 2 plants received treatments of 50, 150, 250, or 350 mg.L-1 nitrogen. Four of the 11 species studied were affected by nitrogen rate, with rates up to 200 mg.L-1 generally producing the largest plants. PGRs: Seven species were potted into a 60% bark/30% peat substrate. Group one plants were treated with a foliar application of benzyladenine (Configure) at rates of 0, 400, 800, or 1600 mg.L-1. Group 2 plants were treated either BA at 0, 250, 500, or 1000 mg.L-1, dikegulac sodium (Augeo) at 400, 800, or 1600 mg.L-1, or a tank mix of 500 mg.L-1 Configure and 800 mg.L-1 Augeo. BA caused an increase in branches leaders or offsets in two species.
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Books on the topic "Growth (Plants) Plant growing media"

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Symposium on Nutrition, Growing Techniques, and Plant Substrates (1985 Aas, Norway). Symposium on Nutrition, Growing Techniques and Plant Substrates: Aas, Norway 23-28 June, 1985. Edited by Gisler©ıd H. R and International Society for Horticultural Science. Commission for Plant Substrates. Wageningen, Netherlands: International Society for Horticultural Science, 1986.

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El-Gobbi, Mahgub Omar. The effect of organic matter in corporation on the behaviour of calcareous growing media. Dublin: University College Dublin, 1997.

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Kirkland, Catriona C. The effect of peat grade, irrigation system and nutrient form on the growth and development of three plant species. Dublin: University College Dublin, 1997.

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Pipe, Jim. Growing plants. North Mankato, MN: Stargazer Books, 2007.

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Claybourne, Anna. Growing plants: Plant life processes. Oxford: Heinemann Library, 2008.

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Claybourne, Anna. Growing plants: Plant life processes. Chicago, Ill: Heinemann Library, 2008.

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Barbara, Taylor. Growing plants. New York: Warwick Press, 1991.

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Handreck, K. A. Growing media for ornamental plants and turf. 3rd ed. Randwick, NSW, Australia: University of New South Wales Press, 2002.

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Handreck, K. A. Growing media for ornamental plants and turf. Randwick, NSW, Australia: University of New South Wales Press, 1994.

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Handreck, K. A. Growing media for ornamental plants and turf. Kensington, N.S.W: New South Wales University Press, 1989.

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Book chapters on the topic "Growth (Plants) Plant growing media"

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Bunt, A. C. "Plant containers, modules and blocks." In Media and Mixes for Container-Grown Plants, 271–83. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-7904-1_14.

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Bunt, A. C. "Loam or loamless media?" In Media and Mixes for Container-Grown Plants, 1–5. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-7904-1_1.

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Bunt, A. C. "Irrigation systems." In Media and Mixes for Container-Grown Plants, 229–34. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-7904-1_10.

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Bunt, A. C. "John Innes composts." In Media and Mixes for Container-Grown Plants, 235–47. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-7904-1_11.

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Bunt, A. C. "Heat pasteurization." In Media and Mixes for Container-Grown Plants, 248–64. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-7904-1_12.

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Bunt, A. C. "Chemical sterilization." In Media and Mixes for Container-Grown Plants, 265–70. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-7904-1_13.

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Bunt, A. C. "Materials for loamless mixes." In Media and Mixes for Container-Grown Plants, 6–39. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-7904-1_2.

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Bunt, A. C. "Physical aspects." In Media and Mixes for Container-Grown Plants, 40–63. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-7904-1_3.

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Bunt, A. C. "Principles of nutrition." In Media and Mixes for Container-Grown Plants, 64–93. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-7904-1_4.

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Bunt, A. C. "Nitrogen." In Media and Mixes for Container-Grown Plants, 94–119. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-7904-1_5.

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Conference papers on the topic "Growth (Plants) Plant growing media"

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Миндубаев, Антон, Эдуард Бабынин, Елена Бадеева, Салима Минзанова, and Йав Акосах. "Биодеградация вещества первого класса опасности - белого фосфора." In International Scientific Symposium "Plant Protection – Achievements and Prospects". Institute of Genetics, Physiology and Plant Protection, Republic of Moldova, 2020. http://dx.doi.org/10.53040/9789975347204.13.

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White phosphorus is one of the most dangerous environmental pollutants. However, it is used in industry and for military purposes; therefore, it is impossible to overlook the fact that this substance is constantly released into the environment. In our works, cultures of microorganisms growing in media with a content of white phosphorus up to 1% were obtained for the first time. This exceeds the TLV in wastewater by 5000 times! These cultures are unique. For the first time, cultures were grown in media containing white phosphorus as the sole source of phosphorus. In these environments, microorganisms grew without experiencing phosphorus starvation. That is, they oxidized white phosphorus to phosphate, which is necessary for vital activity! This is first ever example of the inclusion of white phosphorus in the biospheric circulation of the phosphorus element.

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Mikhailouskaya, N. A., D. V. Voitka, and E. K. Yuzefovitch. "Microbial composition with the properties of plant growth promoter, biofertilizer and biological fungicide." In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.170.

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Microbial composition A. brasilеnse+B. circulans+Т. longibrachiatum (MC) is effective inoculant for grain crops growing in erosion agrolandscaps. MC reveals the properties of plant growth promoter, biological fertilizer and biological fungicide. Poly functional positive action of three-component MC resulted in the increase of grain crops yield and improvement of its quality in stress conditions in erosion agrolandscaps.

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Voropaeva, O. V., Tripti Tripti, A. Kumar, K. A. Panikovskaya, M. G. Maleva, and G. G. Borisova. "Screening of metal tolerant plant growth-promoting endophytic (PGPE) bacteria for the preparation of bioformulation." In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.277.

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Metal tolerant plant growth-promoting bacteria capable of synthesizing IAA from tryptophan, solubilizing phosphates and converting protein nitrogen into ammonia were isolated from plants growing on contaminated soils.

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Kudoyarova, G. R., T. N. Arkhipova, D. S. Veselov, and L. B. Vysotskaya. "Hormonal balance of plants and its relationship with changes in plant growth and productivity under the influence of rhizospheric bacteria." In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.137.

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Here we analyze the dependence of the growth and water relations on the ability of bacteria to influence the content and distribution of abscisic acid (ABA) in plants under different growing conditions.

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Jorgensen, Scott. "Engineering Hydrogen Storage Systems." In ASME 2007 2nd Energy Nanotechnology International Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/enic2007-45026.

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Increased research into the chemistry, physics and material science of hydrogen cycling compounds has led to the rapid growth of solid-phase hydrogen-storage options. The operating conditions of these new options span a wide range: system temperature can be as low as 70K or over 600K, system pressure varies from less than 100kPa to 35MPa, and heat loads can be moderate or can be measured in megawatts. While the intense focus placed on storage materials has been appropriate, there is also a need for research in engineering, specifically in containment, heat transfer, and controls. The DOE’s recently proposed engineering center of expertise underscores the growing understanding that engineering research will play a role in the success of advanced hydrogen storage systems. Engineering a hydrogen system will minimally require containment of the storage media and control of the hydrogenation and dehydrogenation processes, but an elegant system design will compensate for the storage media’s weaker aspects and capitalize on its strengths. To achieve such a complete solution, the storage tank must be designed to work with the media, the vehicle packaging, the power-plant, and the power-plant’s control system. In some cases there are synergies available that increase the efficiency of both subsystems simultaneously. In addition, system designers will need to make the hard choices needed to convert a technically feasible concept into a commercially successful product. Materials cost, assembly cost, and end of life costs will all shape the final design of a viable hydrogen storage system. Once again there is a critical role for engineering research, in this case into lower cost and higher performance engineering materials. Each form of hydrogen storage has its own, unique, challenges and opportunities for the system designer. These differing requirements stem directly from the properties of the storage media. Aside from physical containment of compressed or liquefied hydrogen, most storage media can be assigned to one of four major categories, chemical storage, metal hydrides, complex hydrides, or physisorption. Specific needs of each technology are discussed below. Physisorption systems currently operate at 77K with very fast kinetics and good gravimetric capacity; and as such, special engineering challenges center on controlling heat transfer. Excellent MLVSI is available, its cost is high and it is not readily applied to complex shape in a mass manufacture setting. Additionally, while the heat of adsorption on most physisorbents is a relatively modest 6–10kJ/mol H2, this heat must be moved up a 200K gradient. Physisorpion systems are also challenged on density. Consequently, methods for reducing the cost of producing and assembling compact, high-quality insulation, tank design to minimize heat transfer while maintaining manufacturability, improved methods of heat transfer to and from the storage media, and controls to optimize filling are areas of profitable research. It may be noted that the first two areas would also contribute to improvement of liquid hydrogen tanks. Metal hydrides are currently nearest application in the form of high pressure metal hydride tanks because of their reduced volume relative to compressed gas tanks of the same capacity and pressure. These systems typically use simple pressure controls, and have enthalpies of roughly 20kJ/mol H2 and plateau pressures of at most a few MPa. During filling, temperatures must be high enough to ensure fast kinetics, but kept low enough that the thermodynamically set plateau pressure is well below the filling pressure. To accomplish this balance the heat transfer system must handle on the order of 300kW during the 5 minute fill of a 10kg tank. These systems are also challenged on mass and the cost of the media. High value areas for research include: heat transfer inside a 35MPa rated pressure vessel, light and strong tank construction materials with reduced cost, and metals or other materials that do not embrittle in the presence of high pressure hydrogen when operated below ∼400K. The latter two topics would also have a beneficial impact on compressed gas hydrogen storage systems, the current “system to beat”. Complex hydrides frequently have high hydrogen capacity but also an enthalpy of adsorption >30kJ/mol H2, a hydrogen release temperature >370K, and in many cases multiple steps of adsorption/desorption with slow kinetics in at least one of the steps. Most complex hydrides are thermal insulators in the hydrided form. From an engineering perspective, improved methods and designs for cost effective heat transfer to the storage media in a 5 to 10MPa vessel is of significant interest, as are materials that resist embrittlement at pressures below 10MPa and temperatures below 500K. Chemical hydrides produce heat when releasing hydrogen; in some systems this can be managed with air cooling of the reactor, but in other systems that may not be possible. In general, chemical hydrides must be removed from the vehicle and regenerated off-board. They are challenged on durability and recycling energy. Engineering research of interest in these systems centers around maintaining the spent fuel in a state suitable for rapid removal while minimizing system mass, and on developing highly efficient recycling plant designs that make the most of heat from exothermic steps. While the designs of each category of storage tank will differ with the material properties, two common engineering research thrusts stand out, heat transfer and structural materials. In addition, control strategies are important to all advanced storage systems, though they will vary significantly from system to system. Chemical systems need controls primarily to match hydrogen supply to power-plant demand, including shut down. High pressure metal hydride systems will need control during filling to maintain an appropriately low plateau pressure. Complex hydrides will need control for optimal filling and release of hydrogen from materials with multi-step reactions. Even the relatively simple compressed-gas tanks require control strategies during refill. Heat transfer systems will modulate performance and directly impact cost. While issues such as thermal conductivity may not be as great as anticipated, the heat transfer system still impacts gravimetric efficiency, volumetric efficiency and cost. These are three key factors to commercial viability, so any research that improves performance or reduces cost is important. Recent work in the DOE FreedomCAR program indicates that some 14% of the system mass may be attributed to heat transfer in complex hydride systems. If this system is made to withstand 100 bar at 450K the material cost will be a meaningful portion of the total tank cost. Improvements to the basic shell and tube structures that can reduce the total mass of heat transfer equipment while maintaining good global and local temperature control are needed. Reducing the mass and cost of the materials of construction would also benefit all systems. Much has been made of the need to reduce the cost of carbon fiber in compressed tanks and new processes are being investigated. Further progress is likely to benefit any composite tank, not just compressed gas tanks. In a like fashion, all tanks have metal parts. Today those parts are made from expensive alloys, such as A286. If other structural materials could be proven suitable for tank construction there would be a direct cost benefit to all tank systems. Finally there is a need to match the system to the storage material and the power-plant. Recent work has shown there are strong effects of material properties on system performance, not only because of the material, but also because the material properties drive the tank design to be more or less efficient. Filling of a hydride tank provides an excellent example. A five minute or less fill time is desirable. Hydrogen will be supplied as a gas, perhaps at a fixed pressure and temperature. The kinetics of the hydride will dictate how fast hydrogen can be absorbed, and the thermodynamics will determine if hydrogen can be absorbed at all; both properties are temperature dependent. The temperature will depend on how fast heat is generated by absorption and how fast heat can be added or removed by the system. If the design system and material properties are not both well suited to this filling scenario the actual amount of hydrogen stored could be significantly less than the capacity of the system. Controls may play an important role as well, by altering the coolant temperature and flow, and the gas temperature and pressure, a better fill is likely. Similar strategies have already been demonstrated for compressed gas systems. Matching system capabilities to power-plant needs is also important. Supplying the demanded fuel in transients and start up are obvious requirements that both the tank system and material must be design to meet. But there are opportunities too. If the power-plant heat can be used to release hydrogen, then the efficiency of vehicle increases greatly. This efficiency comes not only from preventing hydrogen losses from supplying heat to the media, but also from the power-plant cooling that occurs. To reap this benefit, it will be important to have elegant control strategies that avoid unwanted feedback between the power-plant and the fuel system. Hydrogen fueled vehicles are making tremendous strides, as can be seen by the number and increasing market readiness of vehicles in technology validation programs. Research that improves the effectiveness and reduces the costs of heat transfer systems, tank construction materials, and control systems will play a key role in preparing advanced hydrogen storage systems to be a part of this transportation revolution.

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Катаев, Михаил, Mikhail Kataev, Кирилл Ёлгин, and Kirill Yolgin. "Determination of Plant Phenological Cycle From RGB Images." In 29th International Conference on Computer Graphics, Image Processing and Computer Vision, Visualization Systems and the Virtual Environment GraphiCon'2019. Bryansk State Technical University, 2019. http://dx.doi.org/10.30987/graphicon-2019-2-178-181.

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Automated visual assessment of the state of the earth and plants, wilting and pests of leaves, plant growth indicators, using technical vision, can be used as a basis in smart (precision) agriculture (SA). This article discusses a brief review of the literature on the use of computer (technical) vision (CV) for analyzing the condition of agricultural fields and plants growing on them. The introduction of vision systems into real agricultural production practice is associated with the development of complex mathematical approaches that must be resistant to a variety of technical and weather changes. It is necessary to overcome image changes caused by atmospheric conditions and daily and seasonal variations in sunlight. An approach is proposed, which is based on an RGB image obtained using a typical digital camera. The results are given on the use of CV systems in solving individual tasks of agricultural production.

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Mukhtar, Moeed, George T. C. Chiu, Gioia Massa, and Cary A. Mitchell. "Modeling and Control of the pH Neutralization Process for a Recirculating Hydroponic Growth Chamber." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14198.

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In this paper, a pH control system for an experimental recirculating hydroponic growth chamber for the NASA Mars exploration program has been modeled and implemented. The resulting model has a bilinear Weiner type structure. A novel approximation approach is presented to obtain a simplified plant model controller design. Perturbation analysis validates the applicability of the approximation for the specific pH control of a closed-loop hydroponic growth chamber. A modified PI controller that takes into account on-off nature of the solenoid valve actuator was designed to control the pH level. The closed-loop system is shown to be BIBO stable with respect to the original bilinear plant model. Experimental results for reference tracking and disturbance rejection in an operational hydroponic chamber with growing plants have demonstrated the effectiveness of the proposed approach.

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ŠIDLAUSKAS, Gvidas, Irena PRANCKIETIENĖ, Rūta DROMANTIENĖ, and Viktoras PRANCKIETIS. "THE EFFECT OF AGRONOMIC AND CLIMATIC FACTORS ON WINTER OILSEED RAPE (BRASSICA NAPUS L.) ROOT NECK GROWTH IN AUTUMN." In Rural Development 2015. Aleksandras Stulginskis University, 2015. http://dx.doi.org/10.15544/rd.2015.025.

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The aim of this study was to investigate the growth habit of winter oilseed rape root neck during the vegetative period in autumn. Such information is important for better understanding of winter oilseed rape growth pattern at early stages of development with the purpose to improve over winter survival. Field trials were conducted on Endocalcari – Epihypogleyic Cambisols. For the determination of changes of winter oilseed rape root neck thickness during autumnal development the effect of planting date, seedbed nitrogen application, stand population density, number of calendar days after emergence, accumulated by plants growing degree days and interaction among these factors was tested. For the description of the root neck growth pattern Boltzmann’s growth function performing a nonlinear fitting of estimating parameters was used. Results collected in the experiments indicate that the effect of sowing date including accumulated by plants growing degree days and the number of calendar days after emergence showed much greater effect on winter oilseed rape root diameter than seeding rate or pre-plant nitrogen application. On the basis of collected data winter oilseed rape root neck growth model was developed. These studies that relate mentioned factors to fall growth of winter oilseed rape root neck are presented in the paper.

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Dell, Robert, Runar Unnthorsson, C. S. Wei, and William Foley. "Waste Geothermal Hot Water for Enhanced Outdoor Agricultural Production." In ASME 2013 Power Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/power2013-98172.

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In Iceland there is a super abundance of waste hot water from geothermal power plants. Some of this is re-purposed (sequentially used) for district heating and heated swimming pools. This vast underused energy source can also enable the growth of out of zone plants, enhance agricultural production by 20% and extend the growing season. The authors have developed and field tested an energy intensive shallow system of bottom heat using the existing heated sidewalk materials. Tomatoes that do not survive outdoors in Iceland have produced ripe fruit. A zucchinis harvest was documented and the test banana plant was still alive in September after the first frost. These plants all died in the control garden which had the same piping system, and identical soil types and depths. Heat transfer data, infrared analysis and plant growth data were gathered to preliminarily document and quantify the system’s viability and market potentials.

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Zhenchenko, K. G., E. N. Turin, and A. A. Gongalo. "Effect of Pisum sativum L. seed treatment with the complex of microbiological preparation on the plants’ growth and development under direct sowing." In РАЦИОНАЛЬНОЕ ИСПОЛЬЗОВАНИЕ ПРИРОДНЫХ РЕСУРСОВ В АГРОЦЕНОЗАХ. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-15.05.2020.27.

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We studied the use of the complex microbial preparation (CMP) in 2016-2018 at the experimental field of the Research Institute of Agriculture of Crimea. The soil is southern chernozem. Long-term annual precipitation – 428 mm; long-term annual air temperature – 12 °С. Pisum sativum L. variety – ‘Madonna’. Chemical treating agent Vitavax 200 FF (water suspension concentrate) at the rate of 0.75 l/ha was used in the control variant. Seeds were inoculated with CMP on the day of planting (FSBSI “Research Institute of Agriculture of Crimea” is the owner of CMP). The composition of the studied complex – 1) symbiotic nitrogen fixers; 2) phosphorus mobilizing microorganisms; 3) microorganisms that inhibit the growth and development of phytopathogenic bacteria and fungi. On average, over three years of research, the height of pea plants was the same and amounted to 82.3 cm in the control and 80.7 cm in the experimental variant. The symbiosis of PS and CMP had a significant effect on the number of beans per plant. In the control, 7.6 pieces were formed; under the influence of CMP – 8.6. In our experiments, the grain size was influenced both by the conditions of the growing season in a particular year and the treatment with CMP. The most favorable conditions were in 2016, which contributed to the largest 1000-grain weight (on average 284 g). In extremely arid 2018, the smallest peas were formed (1000-grain weight – 258 g). On average for 2016-2018, the yield in the variant with inoculation was 0.2 t/ha higher. The small Pisum sativum L. yield in 2018 can be explained by the low air humidity and the absence of productive precipitation.

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