scholarly journals Relative Humidity and Nutrient Concentration Affect Nutrient Uptake and Growth of Begonia × hiemalis

HortScience ◽  
1990 ◽  
Vol 25 (5) ◽  
pp. 524-526 ◽  
Author(s):  
Hans R. Gislerød ◽  
Leiv M. Mortensen
Keyword(s):  
Relative Humidity ◽  
Nutrient Uptake ◽  
Nutrient Solution ◽  
Nutrient Concentration ◽  
Leaf Size ◽  
Dry Weight ◽  
Solution Concentration ◽  
Flowering Plants ◽  
Flower Buds

Young plants of Begonia × hiemalis Fotsch `Schwabenland Red' were grown for 10 weeks at 60% ± 5% or 90% ± 5% relative humidity (RH) in growth rooms. Plants were watered with three nutrient solution concentrations (1, 2, and 4 mS·cm-1). Transpiration of the plants was 56% lower at the high RH level, while the concentration of the nutrient solution had less effect (10% to 20%). Plant dry weight, height, width, and leaf size were significantly higher at the higher RH. Dry weight, height, width, and leaf size of the plants were higher in the 2 mS·cm-1 than in the 1 mS·cm-1 solution when grown at high RH, but not at a lower RH. A further increase of the nutrient solution concentration either had no effect or was detrimental. The higher RH decreased the concentration of N, P, and K in leaves and stems of plants, but an increase in the concentration of the nutrient solution increased the concentration of N, P, K, and Ca in both leaves and stems. At termination of the experiment, the number of flowers and flower buds and percent of flowering plants was higher at 90% RH than at 60% RH. These values also were higher at the higher nutrient solution concentrations. Time of anthesis was not affected.

scholarly journals Growth of Chrysanthemum at Low, Relatively Steady Nutrient Levels in a Commercial-style Substrate

HortScience ◽  
1992 ◽  
Vol 27 (8) ◽  
pp. 877-880 ◽  
Author(s):  
Kimberly A. Williams ◽  
Paul V. Nelson
Keyword(s):  
Water Content ◽  
Nutrient Solution ◽  
Nutrient Concentration ◽  
Dry Weight ◽  
Solution Concentration ◽  
Molar Ratio ◽  
Nutrient Concentrations ◽  
Regression Curves ◽  
Regression Slopes ◽  
Significant Regression

Nutrient solution with a molar ratio of 10 N: 1 P: 3 K was applied in scheduled intervals at rates of 0.5, 1, 4, or 20 mm N (NO3 + NH4) to Dendranthema ×grandiflorum (Ramat.) Kitamura `Sunny Mandalay' plants seven (7/day) or 14 times/day (14/day). These plants were compared to a 20 mm N control in which nutrient solution was applied when the soil moisture tension reached 30 kPa. Plants with 7/day had significant quadratic relationships for height, width, and dry weight, with the lowest responses at the low nutrient concentration. With 14/day, height and dry weight did not differ, although width did increase linearly with nutrient solution concentration. However, linear regression slopes for all three variables were much lower with 1Vday than with 7/day. At midcrop in both experiments, significant regression curves indicated that the lower concentrations of nutrient solution resulted in lower tissue N and K levels; however, slopes of the linear regressions were lower with 14/day than with 7/day. With 7/day, the water content (percentage) of plants in the schedule-fertilized treatments was higher in plants receiving higher nutrient concentrations, as indicated by the significant linear and quadratic regression curves. With 14/day, the water content was linearly related to solution nutrient concentration, but with a lower slope than with 7/day. These three trends indicate that steady-state nutrition was more closely achieved in a commercial-style substrate with 14/day applications of nutrient solution. These results suggest that plant growth that meets commercial expectations can be achieved at lower soil solution nutrient concentrations than currently applied.

scholarly journals Effects of Nutrient Solution Concentration and Daily Light Integral on Growth and Nutrient Concentration of Several Basil Species in Hydroponic Production

HortScience ◽  
2018 ◽  
Vol 53 (9) ◽  
pp. 1319-1325 ◽  
Author(s):  
Kellie J. Walters ◽  
Christopher J. Currey
Keyword(s):  
Nutrient Solution ◽  
Nutrient Concentration ◽  
Dry Weight ◽  
Solution Concentration ◽  
Mineral Nutrient ◽  
Nutrient Concentrations ◽  
Node Number ◽  
Sweet Basil ◽  
Nutrient Film Technique ◽  
Tissue Nutrient Concentrations

Our objective was to quantify the effect of mineral nutrient concentration of a nutrient solution on the growth of basil species and cultivars grown under high and low photosynthetic daily light integrals (DLIs). Sweet basil (Ocimum basilicum ‘Nufar’), lemon basil (O. ×citriodorum ‘Lime’), and holy basil (O. tenuiflorum ‘Holy’) seedlings were transplanted into nutrient-film technique (NFT) systems with different nutrient solution electrical conductivities (EC; 0.5, 1.0, 2.0, 3.0, or 4.0 dS·m–1) in greenhouses with a low (≈7 mol·m–2·d–1) or high (≈15 mol·m–2·d–1) DLI. Although nutrient solution EC did not affect growth and morphology, increasing DLI did. For example, when sweet basil was grown under a high DLI, the fresh and dry weight, height, and node number increased by 144%, 178%, 20%, and 18%, respectively, compared with plants grown under the low DLI, and branching was also stimulated. In contrast, DLI had little effect on tissue nutrient concentration, although nutrient solution did. Most tissue nutrient concentrations increased with increasing EC, with the exception of Mg and Ca. For example, N in sweet basil increased by 0.6% to 0.7% whereas Mg decreased by 0.2% as EC increased from 0.5 to 4.0 dS·m–1. Across treatments and basil species, tissue nutrient concentrations were generally within recommended ranges with no visible deficiencies. Based on our results, nutrient solution concentrations for hydroponic basil production can be selected based on factors such as other species grown in the same solution or by reducing fertilizer inputs.

scholarly journals THE ASSOCIATION OF FLOWERING HABIT WITH WINTER SURVIVAL IN RED AND ALSIKE CLOVER DURING THE SEEDLING YEAR OF GROWTH

1960 ◽  
Vol 40 (2) ◽  
pp. 335-344 ◽  
Author(s):  
Henri P. Therrien ◽  
Dale Smith
Keyword(s):  
Red Clover ◽  
Dry Weight ◽  
Flowering Plants ◽  
Winter Survival ◽  
Lower Percentage ◽  
Flower Buds ◽  
Root Branching ◽  
Crown Root

The percentage of plants that flowered in the seedling year in spaced populations of red and alsike clovers at Madison and Arlington, Wisconsin, was highest in the earliest seedings (May 15) and decreased with later seeding dates. No plants flowered in the July 15th seedings. The percentage of winterkilling during the first winter was higher in the flowering plants of each clover than in the non-flowering plants. Differences in flowering and winter survival were noted among clover strains and in winter survival among plant types within strains.Prevention of flowering in medium red clover by removing flower buds, flowering stems and/or elongating tillers resulted in greater vegetative vigour and winter survival. Plants that were allowed to flower freely in the seedling year in spaced populations had a smaller number of non-flowering crown tillers, a smaller width of crown, a lower dry weight of crown, root and total available carbohydrates in the roots, less root branching, a slightly lower percentage of total available carbohydrates in the roots, and more winterkilling during the first winter than plants that were prevented from flowering. These responses may help in part to explain the benefits attributed to clipping red clover in the seedling year.

The importance of environmental factors in soil fertility assessments. II.* Nutrient concentration and uptake

1974 ◽  
Vol 25 (2) ◽  
pp. 309 ◽  
Author(s):  
RC Stefanson ◽  
N Collis-George
Keyword(s):  
Soil Fertility ◽  
Soil Temperature ◽  
Nutrient Uptake ◽  
Physical Environment ◽  
Nutrient Concentration ◽  
Incident Light ◽  
Dry Weight ◽  
Plant Performance ◽  
Plant Responses ◽  
Wide Range

Lettuce plants were grown in two soils under a wide range of controlled conditions in the glasshouse. Assessments were made of the effect of soil temperature, incident light and season, in terms of the nutrient concentration and nutrient uptake in the plant tissue, which was analysed for nitrogen, phosphorus, potassium, magnesium, calcium and sodium. Both the concentration and the uptake of each nutrient were affected significantly by soil temperature and incident light, both between and within seasons. The type of soil had an effect on these estimations, but its significance could not be tested statistically. A considerable number of first and second order interactions between components of the physical environment affected the quantities being examined. These interactions were statistically significant. The value of each nutrient analysed, which is an aspect of plant performance, reflected changes in the physical environment independently of the other nutrients. Often a particular nutrient showed no coincident pattern of responses to the environment when these were measured in terms of dry weight, nutrient concentration in the tissue, or total nutrient uptake. Each nutrient concentration and each nutrient uptake varied as micrometeorological factors in the glasshouse changed. Hence, ambiguous assessments of soil fertility were obtained with all measured plant responses. ____________________ *Part I, Aust. J. Agric. Res., 25: 299 (1974).

scholarly journals USO RACIONAL DE NUTRIENTES NO CULTIVO HIDROPÔNICO DE AMOR-PERFEITO

Irriga ◽  
2006 ◽  
Vol 11 (3) ◽  
pp. 367-375
Author(s):  
Milena Andrea Curitiba Pilla ◽  
Lenita Lima Haber ◽  
Hélio Grassi Filho
Keyword(s):  
Plant Height ◽  
Nutrient Solution ◽  
Treatment Plant ◽  
Dry Weight ◽  
Solution Concentration ◽  
Randomized Design ◽  
Hydroponic Cultivation ◽  
Viola X Wittrockiana ◽  
Number Of Leaves ◽  
System Length

USO RACIONAL DE NUTRIENTES NO CULTIVO HIDROPÔNICO DE AMOR-PERFEITO  Milena Andrea Curitiba Pilla1; Lenita Lima Haber1; Hélio Grassi Filho2.1Departamento de Produção Vegetal – Horticultura, Faculdade de Ciencias Agronomicas, Universidade Estadual Paulista, Botucatu, SP, [email protected];  2Departamento de Recursos Naturais - Ciência do Solo, Faculdade de Ciencias Agronomicas, Universidade Estadual Paulista, Botucatu, SP  1 RESUMO O objetivo deste trabalho foi avaliar diferentes concentrações de solução nutritiva no cultivo hidropônico de Viola x wittrockiana Gams. O experimento foi conduzido em sistema hidropônico DFT, no delineamento experimental inteiramente casualizado, em esquema fatorial 5x4, com cinco concentrações de solução nutritiva (50, 75, 100, 125 e 150%) e quatro épocas de avaliação, contando cada tratamento, de três repetições de três plantas. Foram analisadas a altura de plantas, o comprimento da raiz, o número de folhas, as flores e botões florais e a massa fresca e seca da parte aérea e da raiz. Os resultados obtidos foram submetidos à análise de variância, teste de Tukey para épocas de avaliação e análise de regressão para concentrações da solução nutritiva. Foi observado um decréscimo no desenvolvimento da parte aérea e do sistema radicular com o aumento do número de dias de cultivo e, o maior número de botões florais ocorreu na terceira semana de cultivo. Observou-se, de maneira geral, uma redução na altura de plantas, no comprimento do sistema radicular, no número de folhas e na massa fresca e seca da parte aérea com o aumento da concentração de nutrientes na solução nutritiva. UNITERMOS: Viola x wittrockiana Gams, solução nutritiva, concentração salina.  PILLA, M. A .C.;  HABER , L. L.; GRASSI FILHO, H. RATIONAL NUTRIENT USE IN HYDROPONIC CULTIVATION OF “Viola x wittrockiana Gams”  2 ABSTRACT The objective of this work was to evaluate different concentrations of nutritional solution in the hydroponic cultivation of Viola x wittrockiana Gams. The experiment was conducted in DFT hydroponic system, in a completely randomized design with a 5x4 factorial scheme and five nutrient solution concentrations (50, 75, 100, 125 and 150%), four evaluation periods with three replications of three plants for each treatment. Plant height, root length, number of leaves, flowers and floral buttons; fresh and dry weight of shoot and root were determined. The results were submitted to variance analysis, Tukey’s test for evaluation periods and regression analysis for nutrient solution. A decrease in the development of the shoot and root was observed with an increase of the number of cultivation days; the greatest number of floral buttons occurred in the third week of cultivation. A reduction in the plant height, root system length, the number of leaves and the fresh and dry weight of shoot was observed generally with the increase of nutrient solution concentration. KEYWORDS: Viola x wittrockiana Gams, nutrient solution, saline concentration.

scholarly journals Optimum Feeding Nutrient Solution Concentration for Greenhouse Potted Miniature Rose Production in a Recirculating Subirrigation System

HortScience ◽  
2010 ◽  
Vol 45 (9) ◽  
pp. 1378-1383 ◽  
Author(s):  
Youbin Zheng ◽  
Diane Feliciano Cayanan ◽  
Mike Dixon
Keyword(s):  
Chlorophyll Content ◽  
Nutrient Solution ◽  
Growth Parameters ◽  
Dry Weight ◽  
Bottom Layer ◽  
Solution Concentration ◽  
Branch Number ◽  
Nutrient Contents ◽  
Fourfold Increase ◽  
Total Dry Weight

To determine the optimum feeding nutrient solution concentrations for the production of potted miniature roses (Rosa chineersis minima ‘Fall Festival’) under recirculating subirrigation conditions, plants were grown under four different nutrient solution concentrations [25%, 50%, 75%, and 100% of the full strength with an electrical conductivity (EC) of 1.756 dS·m−1]. Nutrient solution concentrations affected the stem, root, and plant total dry weight and flower and branch number. Under the 75% strength nutrient solution, these growth parameters were equal to or better than the 100% strength solution. No difference was detected in the chlorophyll content of leaves from plants that received the 50%, 75%, and 100% strength solutions during the experiment but at Day 35; only the 25% treatment had significantly lower leaf chlorophyll content than the other treatments. There were no treatment effects on the measured total foliar nutrient contents [except potassium (K)] of plants under the 75% strength solution compared with those under the 100% treatment, but nitrogen (N), phosphorus (P), and/or iron (Fe) of plants under the 25% strength solutions were below that of the acceptable range. Interveinal chlorosis and/or reddish leaves and branches were also apparent in plants under the 25% and 50% strength solutions. It is suspected that these are symptoms of N, P, and Fe deficiencies caused by the reduced nutrient solution concentrations and increased pH of the growing substrate. There were significant depletions of N and P nutrients in the 25% and 50% strength solutions at the end of the experiment, which was consistent with visual symptoms and deficiencies. Nutrient salts accumulated in the top section of the growing substrate under all treatments, but no phytotoxic effects were observed. The EC values for the top third of the growing substrate were much higher than those of the bottom two-thirds. EC for the top layer of the 100% treatment exhibited a fourfold increase compared with the bottom layer of that treatment. The NO3–, K, magnesium, and calcium for the top layer of the 100% treatment were 235%, 149%, 287%, and 245%, respectively, higher compared with the bottom layer of the 100% treatment. It was concluded that the nutrient solution concentrations typically used for potted miniature rose production in most of the Canadian greenhouses under recirculating subirrigation conditions can be safely reduced to 75% and produce better plants.

scholarly journals PEG-8000 Alters Morphology and Nutrient Concentration of Hydroponic Impatiens

HortScience ◽  
2005 ◽  
Vol 40 (6) ◽  
pp. 1768-1772 ◽  
Author(s):  
Stephanie Burnett ◽  
Marc van Iersel ◽  
Paul Thomas
Keyword(s):  
Electrical Conductivity ◽  
Polyethylene Glycol ◽  
Nutrient Uptake ◽  
Plant Height ◽  
Nutrient Solution ◽  
Nutrient Concentration ◽  
Nutrient Deficiency ◽  
Foliar Tissue ◽  
Impatiens Walleriana ◽  
Peg 8000

Osmotic compounds, such as polyethylene glycol 8000 (PEG-8000), reduce plant elongation by imposing controlled drought. However, the effects of PEG-8000 on nutrient uptake are unknown. Impatiens `Dazzler Pink' (Impatiens walleriana Hook. F.) were grown hydroponically in modified Hoagland solutions containing 0, 10, 17.5, 25, 32.5, 40, 47.5, 55, or 62.5 g·L–1 PEG-8000. Impatiens were up to 68% shorter than control plants when grown with PEG-8000 in the nutrient solution. Plants treated with PEG-8000 rates above 25 g·L–1 were either damaged or similar in size to seedlings treated with 25 g·L–1 of PEG-8000. Impatiens leaf water potentials (Ψw) were positively correlated with plant height. PEG-8000 reduced the electrical conductivity of Hoagland solutions as much as 40% compared to nontreated Hoagland solutions, suggesting that PEG-8000 may bind some of the nutrient ions in solution. Foliar tissue of PEG-treated impatiens contained significantly less nitrogen, calcium, zinc, and copper, but significantly more phosphorus and nickel than tissue from nontreated impatiens. However, no nutrient deficiency symptoms were induced.

scholarly journals Pemberian Larutan Hara untuk Budidaya Tanaman Akar Wangi (Vetiveria zizanioides (L.) Nash) Menggunakan Teknologi Hidroponik Sistem Terapung (THST)

2015 ◽  
Vol 6 (2) ◽  
pp. 75
Author(s):  
Siti Aisyah Rohmatus Sa’adah ◽  
Slamet Susanto
Keyword(s):  
Nutrient Solution ◽  
Root Development ◽  
Block Design ◽  
Dry Weight ◽  
Solution Concentration ◽  
Growth And Yield ◽  
Vetiveria Zizanioides ◽  
Poor Growth ◽  
Floating System ◽  
Root Cutting

<p>ABSTRACT</p><p>The  objective  of  this  experiment  was  to  determine  the  effect  of concentration  of  nutrient solution  on  growth  and  yield  of  vetiver (Vetiveria zizanioides  (L.)  Nash)  Verina  2  variety  using Hydroponic Floating System Technology (HFST). This experiment  was  conducted in the greenhouse of Cikabayan Bawah,  Experimental Farm  IPB,  with elevation of 240 m above sea level (asl) from December 2013 until February 2014.  The experiment  was based on a  randomized complete  block design  which consisted  of two experiments: (1) a plant without root  cutting (3 replicates), (2) plants with root cutting (6 replicates), with one factor and three-levels: 200, 400, and 800 nutrient solution concentrations.  The  results  showed  that  the  concentration of  the  nutrient  solution  had  significant effect  on  plant  height, number  of tillers,  number  of  new  saplings,  shoot  dry  weight  in  plants  that have not done cutting the roots, and root fresh weight in plants that have been done cutting the roots. Treatment  of  nutrient  solution  concentration  of  200  ppm resulted  in  poor  growth  plants.  Vetiver plants grown with the provision of nutrient solution concentration between 400 to 800 ppm acquired a better canopy growth and root development, therefore HFST could be applied to the cultivation of vitiver  on  the  concentration  of  the  nutrient  solution  to produce  a  better  canopy  growth  and  root development.</p><p>Key words: floating system, hydroponic, nutrient solution, vetiver</p><p> </p><p>ABSTRAK</p><p>Penelitian  ini  bertujuan  untuk  mengetahui  pengaruh  konsentrasi  larutan hara  terhadappertumbuhan  dan  hasil  akar  wangi  (Vetiveria  zizanioides (L.) Nash)  varietas  Verina  2  dengan menggunakan Teknologi Hidroponik Sistem Terapung (THST). Penelitian ini merupakan penelitian lanjutan  dari  penelitian sebelumnya  dan  dilakukan  di  rumah  kaca  Kebun  Penelitian Cikabayan Bawah IPB, dengan elevasi 240 m di atas permukaan laut (dpl) mulai dari bulan  Desember 2013 hingga  bulan  Februari  2014.  Penelitian disusun berdasarkan  rancangan kelompok  lengkap  teracak (RKLT)  yang terdiri  atas  dua  percobaan:  (1)  tanaman  tanpa  pemotongan  akar  (3 ulangan),  (2) tanaman  dengan  pemotongan akar (6 ulangan), dengan satu faktor dan tiga taraf: konsentrasi larutan hara  200,  400,  dan  800  ppm. Hasil penelitian  menunjukkan  bahwa  konsentrasi  larutan  hara berpengaruh nyata pada tinggi tanaman, jumlah anakan, jumlah anakan baru, dan bobot  kering tajuk pada  tanaman  tanpa  pemotongan  akar,  serta  berpengaruh  nyata terhadap bobot  basah  akar  pada tanaman  dengan  pemotongan  akar. Perlakuan  konsentrasi  larutan  hara  200  ppm  menghasilkan pertumbuhan dan  perkembangan  tanaman  yang  tidak  baik.  Tanaman  akar  wangi  yang ditanam dengan pemberian  konsentrasi  larutan  hara  antara  400  sampai 800 ppm mempunyai  pertumbuhan tajuk dan perkembangan akar tanaman yang lebih baik, oleh karena itu THST dapat diterapkan untuk budi  daya  akar  wangi pada konsentrasi  larutan  hara  tersebut  sehingga  dapat menghasilkan pertumbuhan tajuk dan perakaran yang baik.</p><p>Kata kunci: sistem terapung, hidroponik, larutan hara, akar wangi</p>

scholarly journals Pengaruh Berbagai Perlakuan Nutrisi Larutan Hidroponik Pada Pertumbuhan Tanaman Kangkung (Ipomoea aquatica)

BIOSCIENTIAE ◽  
2021 ◽  
Vol 17 (2) ◽  
pp. 47
Author(s):  
Masriah Masriah
Keyword(s):  
Plant Growth ◽  
Nutrient Solution ◽  
Agricultural Land ◽  
Growth Parameters ◽  
Dry Weight ◽  
Solution Concentration ◽  
Supply Source ◽  
Best Response ◽  
Randomized Design ◽  
The One

Hydroponic cultivation systems are often applied to overcome the shortage of agricultural land in this case food crops, especially vegetables. Nutrient Film Technique (NFT) is the one of various ways to grow crops hydroponically. Hydroponic systems are carried out without the use of soil media and it can be an alternative solution for the efficient use of land. Uniformity of nutrients and nutrient solution concentration levels required to be adjusted. Nutrient solution as a water supply source and minerals. Nutrition is an important factor for the growth and quality of hydroponic plants should be appropriate in terms of the number of ion composition of nutrients. This study aimed to determined the effect of various treatments of hydroponic nutrient solution on plant growth kale. This study used a completely randomized design (CRD) with 4 treatments and 5 replications. Kale seed sowing in the growing media rockwool and nourished by nutrient A, nutrient B, combination of nutrients A and B (3: 1), or a combination of nutrients A and B (1: 3). Plant growth parameters such as plant height, number of leaves, wet weight, dry weight, and dry weight without root measured. Data were analyzed using analysis of variance ANOVA and DMRT test with α = 95%. The results showed that affect the nutrient solution hydroponic plant growth kale. Kale plants with a combination of nutrient A and nutrient B ratio of 3: 1 (treatment C) give the best response compared with other treatments.

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