Effects of Root Zone Ph and Nutrient Concentration on the Growth and Nutrient Uptake of Tomato Seedlings

Kang, Yun-Im; Park, Jin-Myeon; Kim, Seung-Heui; Kang, Ning; Park, Kyoung-Sub; Lee, Si-Young; Jeong, Byoung Ryong

doi:10.1080/01904167.2011.540621

Cited by 39 publications

(11 citation statements)

References 25 publications

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“…Additionally, a study by Kang et al (2011) showed that root dry biomass was maintained irrespective of nutrient concentrations and that improved water-use-efficiency to avoid water stress is usually achieved by reducing shoot biomass. Greywater irrigation resulted in an increase in EC relative to tap-water treatments and may have altered plant-water relations relative to tap-water irrigated pots by increasing the osmotic potential of the soil.…”

Section: Seedling Growthmentioning

confidence: 99%

Effects of greywater irrigation on germination, growth and photosynthetic characteristics in selected African leafy vegetables

Lubbe¹,

Rodda²,

Sershen³

2016

WSA

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The reuse of greywater, wastewater from sources other than toilets, could enable low-income households to save potable water for drinking and cooking. Greywater irrigation of food crops is widely practised but its effects on African leafy vegetables (ALVs), which hold potential for cultivation to improve food security, are unknown. This study investigated the effects of synthetic greywater irrigation on germination in three ALVs, viz., Amaranthus dubius, Cleome gynandra and Solanum nigrum, and subsequent seedling growth in A. dubius and S. nigrum. Seeds and seedlings were treated with chlorinated and dechlorinated greywater and tap water, supplemented with nutrients. Greywater application decreased germination capacity (by 23-25%) when assessed in Petri dishes in A. dubius only. However, greywater application was less harmful to A. dubius seeds sown in soil. Vigour was compromised in greywater-treated seeds of all three species but greywater can be used to irrigate freshly-sown seeds of A. dubius without reducing percentage seedling production. However, greywater irrigation reduced capacity (by 21-23%) and rate of shoot emergence in S. nigrum, and growth and chlorophyll content in both species. These negative effects were accompanied by increased soil electrical conductivity (after 21 d) and pH (after 14 d). The reduced growth under greywater irrigation was most likely based on a reduction in light-harvesting capacity and/or nutrient availability. Overall, S. nigrum seedlings were significantly more sensitive to the negative effects of greywater, possibly due to increased transpirational water loss under greywater irrigation. The effects of greywater were largely independent of chlorine content. Applying greywater in excess of plant requirements and/or alternating greywater irrigation events with freshwater watering events could promote leaching of salts found in greywater. The effects of greywater irrigation on soil water and nutrient availability demand further investigation for ALVs.

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Section: Seedling Growthmentioning

confidence: 99%

Effects of greywater irrigation on germination, growth and photosynthetic characteristics in selected African leafy vegetables

Lubbe¹,

Rodda²,

Sershen³

2016

WSA

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“…Previous research has reported that pH differences can be highly in uential to plant growth, including weed growth (Buchanan, Hoveland and Harris 1975). For example, an experimental study using tomato seedlings reported that when soil pH of was at both 4 and 8, plant growth was diminished, but at a pH of 6, plant growth was optimal (Kang et al 2011). Riparian soils have also recorded substantial pH differences in urban versus nonurban catchments (Grella, Renshaw and Wright 2018).…”

Section: Discussionmentioning

confidence: 99%

The Influence of Concrete and Urban Water Quality On The Growth of An Invasive Weed (Salix Spp.) in One of Australia’s Most Endangered Aquatic Environments.

Purdy

Reynolds

Wright

2021

Preprint

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Riparian vegetation along urban streams and wetlands is frequently dominated by invasive weeds. Elevated nitrogen and phosphorous in urban waters and soils are well-known to encourage invasive urban weeds, but this research demonstrates that other urban geochemical contaminants may also be influential. Previous studies have demonstrated that the dissolution of urban concrete is a poorly recognised source of modified water and soil geochemistry, which may enhance the growth of some invasive weeds. This study investigated the relationship between urban water quality and the growth of an invasive urban riparian weed, willow (Salix spp.) to examine the contribution of concrete materials. The study used water from a wetland in the Greater Blue Mountains World Heritage Area. These wetlands have a unique biodiversity but are fragile and susceptible to degradation from human activity. Many are in urban catchments and are frequently dominated by invasive weeds, including Salix spp. In this study, willow cuttings were grown in a laboratory using four water treatments: pristine, urban, and pristine water exposed to two different concrete materials. The urban and concrete water treatments had higher pH, salinity, calcium, potassium, and higher concentration of several metals and were associated with increased growth of Salix spp. We suggest that the modification of urban water and riparian soil chemistry by urban concrete materials may contribute to the success of invasive species in urban wetlands and riparian zones. Some metals (barium, strontium) were present in urban water and in pristine water exposed to concrete and bioaccumulated in plant tissue.

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“…We found that cells cultured in culture medium containing less MS salts and vitamins exhibited least cell biomass compared to full and double strength media, probably due to insufficient nutrient supply. High nutrient concentration, however, might cause an osmotic stress and toxicity to cell cultures (Lipavská and Vreugdenhil 1996) and affect the nutrient uptake (Kang et al 2011). Our results were in agreement with the study carried out by Nagella and Murthy (2010), where the full strength MS medium was found to favor the accumulation of biomass in Withania somnifera cell suspension cultures.…”

Section: Ms Strengthmentioning

confidence: 98%

Expression profiles of flavonoid-related gene, 4 coumarate: coenzyme A ligase, and optimization of culturing conditions for the selected flavonoid production in Boesenbergia rotunda

Ata

Yusuf

Tan

et al. 2015

Plant Cell Tiss Organ Cult

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Knowing 4-Coumarate: coenzyme A ligase (4CL) is one of the important enzymes in the biosynthetic pathway of phenylpropanoid, we studied the gene expression profiles of 4CL and determined the production of selected flavonoids in different parts of Boesenbergia rotunda. The optimal growth conditions for B. rotunda cells were also investigated. In this study, we found that the 4CL transcript was expressed in leaves, rhizomes, and roots with highest expression level found in roots. In contrast, HPLC results showed that the highest total flavonoid contents (pinostrobin, pinocembrin and panduratin A) were recorded in rhizome followed by root and leaf samples. Since rhizome has been found to be a suitable source of explants for in vitro propagation, thus, we initiated sprout from rhizome in order to establish cell suspension cultures. Our study showed that cells grown in full strength Murashige and Skoog basal medium (pH 5.8) containing 1 mg/l 1-napththylacetic acid, 1 mg/l 6-benzyladenine, and 3 % sucrose produced maximal cell biomass and total flavonoid contents. We also found that the 4CL transcript levels for 14-and 10-day old phenylalanine-treated cultures were up-regulated for 22-and 17-fold, respectively, compared to 0-day, indicating the promotive effect of phenylalanine in enhancing the 4CL gene expression. This study provides necessary baseline data for 4CL gene expression profiles and optimal cell culture conditions for the flavonoid production.

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Effects of Root Zone Ph and Nutrient Concentration on the Growth and Nutrient Uptake of Tomato Seedlings

Cited by 39 publications

References 25 publications

Effects of greywater irrigation on germination, growth and photosynthetic characteristics in selected African leafy vegetables

Effects of greywater irrigation on germination, growth and photosynthetic characteristics in selected African leafy vegetables

The Influence of Concrete and Urban Water Quality On The Growth of An Invasive Weed (Salix Spp.) in One of Australia’s Most Endangered Aquatic Environments.

Expression profiles of flavonoid-related gene, 4 coumarate: coenzyme A ligase, and optimization of culturing conditions for the selected flavonoid production in Boesenbergia rotunda

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