scholarly journals (63) Effect of Fertilization on Growth of Ornamental Lotus in Containers

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1071D-1071
Author(s):  
Daike Tian ◽  
Ken Tilt ◽  
Floyd Woods ◽  
Jeff Sibley ◽  
Fenny Dane
Keyword(s):  
Plant Height ◽  
Growth Parameters ◽  
Leaf Tissue ◽  
Growth Index ◽  
Dry Mass ◽  
Control Treatment ◽  
Flower Number ◽  
Soluble Fertilizer ◽  
Fertilizer Rates ◽  
Container Production

Little research is reported on container production of ornamental lotus (Nelumbo nucifera Gaertn.). In this study, fertilization has a critical impact on growth index of lotus `No.7', a numbered clone, in 29 liter (7.5 gallon) containers. Compared to the control treatment (zero fertilization), 1–3 tsp. (4g/tsp.) of 20-10-20 (Pro·Sol) applied every 20 days significantly increased plant height (1.3–1.6 times), fresh biomass (2.4–3.3 times), emerging leaf number (1.9–2.7 times), flower number (2.4–2.7 times), and propagule number (1.3–1.5 times). There was a quadratic response as growth parameters increased with increasing fertilizer rates. Growth indices increased linearly from 0–2 tsp. and then leveled as fertilizer rates reached 3 tsp. No difference was recorded in flower number and plant height for 1–3 tsp. fertilizer treatments. Absorption of nutrition increased with fertilization concentration, an absorption peak value appeared between 13 July and 2 Aug. For 1-3 tsp. treatments, nitrogen is nearly 100% absorbed by lotus every 20 days. However, there is some residue for P and K, especially in 3-tsp. treatment in the earlier and later growth season. Analysis of young leaf tissue indicated that macronutrients N, P, K, and dry mass increased, but Ca decreased with increasing fertilizer rates. In tuber tissue, K, Na, and dry mass increased, while Ca and Fe content decreased. The most efficient rate of fertilizer for 7.5 gallon container production of `No.7' lotus was 2 tsp. per 20 days. Although soluble fertilizer also stimulated proliferation of algae growth in the early growth stage of lotus, this problem dissipated as emerging leaves shaded the water surface.

scholarly journals Timing and Rates of Two Products Using Hydrogen Peroxide (H2O2) to Control Algae in Ebb and Flow Hydroponic Systems

HortScience ◽  
2022 ◽  
Vol 57 (1) ◽  
pp. 32-39
Author(s):  
Dharti Thakulla ◽  
Bruce L. Dunn ◽  
Carla Goad ◽  
Bizhen Hu
Keyword(s):  
Hydrogen Peroxide ◽  
Plant Height ◽  
Growth Parameters ◽  
Dry Weight ◽  
Pepper Plant ◽  
Flower Number ◽  
Cell Counts ◽  
Hydroponic Systems ◽  
Weekly Application ◽  
Ebb And Flow

Algae is not desirable in hydroponics and creates problems such as reduced yield and decreased dissolved oxygen, and affects the physiology of plants and, thus, needs to be controlled. An experiment was conducted in Ebb and Flow hydroponic systems to investigate the application timing and rates of two hydrogen peroxide products (Zerotol and PERpose Plus). Treatments included 35 mL weekly, 35 mL biweekly, 70 mL weekly, 70 mL biweekly, and a control with no application of hydrogen peroxide using a 40-gallon reservoir of water. Pepper ‘Early Jalapeno’ and ‘Lunchbox Red’ and tomato ‘Geronimo’ and ‘Little Sicily’ were used. The study was conducted in a split-plot design with two replications over time. Plant growth parameters, including plant height, flower number, net CO2 assimilation, fresh weight, and dry weight were recorded. Algae data, including dry weight, algae cell counts, and chl a were also measured. Results indicated that with increasing rate and timing of either product decreased algae counts, dry weight, and chl a values. However, weekly and biweekly application of 70 mL of both products were not different for algae quantification. In pepper, plant height, shoot fresh and dry weight, and root fresh and dry weight were found to be significantly greater with Zerotol 35 mL biweekly, Zerotol 70 mL weekly, PERpose Plus 35 mL biweekly, and PERpose Plus 70 mL weekly compared with the control. ‘Lunchbox Red’ was significantly greater than ‘Early Jalapeno’ in all growth parameters, except soil plant analysis development (SPAD). ‘Lunchbox Red’ had the greatest flower number, with weekly application of 70 mL PERpose Plus. In tomato, greatest flower number and SPAD were observed in ‘Geronimo’ with a weekly application of 70 mL PERpose Plus and 70 mL Zerotol, respectively. Greater shoot and root fresh and dry weight for both tomato cultivars were recorded with 35 mL biweekly or 70 mL weekly application with either product. The results from both plants as well as algae analysis suggest that weekly application of 70 mL of either Zerotol or PERpose Plus produced the best results in terms of controlling algae and improving the growth of pepper and tomato plants.

scholarly journals Fertilization and Harvest Technique Affect Yield of Aloe barbadensis Miller

HortScience ◽  
1997 ◽  
Vol 32 (6) ◽  
pp. 980b-980
Author(s):  
Yin-Tung Wang
Keyword(s):  
Total Yield ◽  
Aloe Vera ◽  
Leaf Tissue ◽  
Dry Mass ◽  
Aloe Barbadensis ◽  
Harvest Technique ◽  
Leaf Yield ◽  
Long Term Experiment ◽  
Number Of Leaves ◽  
Soluble Fertilizer

Aloe barbadensis (Aloe vera) plants remain in production fields for several years, with their lower leaves harvested periodically. A long-term experiment was initiated in November 1993 to determine the effects of fertilization and severeness of harvest on leaf yield. Plants were grown in large pots with or without monthly applications of a 20N–8.6P–16.6K soluble fertilizer from March to October. Beginning in June 1994, the lower leaves were harvested quarterly to have 18, 15, or 12 leaves remaining. Fertilization doubled the number of leaves harvested and tripled the total yield over a 2-year period. The lower leaves on the nonfertilized plants, particularly on plants with 18 leaves remaining, sometimes became dry or partially dry at harvest. The initial quarterly yield and cumulated yield were higher in plants with 12 leaves remaining; however, this trend disappeared over time. The fertilized plants produced an average of 10 kg per plant, while the nonfertilized plants produced only 3.2 kg per plant annually. At several harvests, plants with 18 leaves remaining had higher % dry mass in the inner semi-translucent tissue than those having 12 leaves. Leaves of nonfertilized plants had high % dry mass in the inner leaf tissue when harvested in June and September 1995. Plants with 12 leaves remaining can become unstable and the tops break off in gusty wind.

scholarly journals Application of phytohormones as attenuators of salt stress in Tropaeolum majus L. (Tropaeolaceae)

2022 ◽  
Vol 81 (1) ◽  
Author(s):  
Toshik Iarley da Silva ◽  
Marlon Gomes Dias ◽  
José Antônio Saraiva Grossi ◽  
Wellington Souto Ribeiro ◽  
Paulo José de Moraes ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Salt Stress ◽  
Jasmonic Acid ◽  
Plant Height ◽  
Dry Mass ◽  
Control Treatment ◽  
Gas Exchange Parameters ◽  
Physiological Processes ◽  
Leaf Dry Mass ◽  
Tropaeolum Majus

The salinity of the soil and irrigation water is one of the great challenges of agriculture. Salinity can have harmful effects on physiological processes and plant growth, including Tropaeolum majus L. (Tropaeolaceae). The application of phytohormones can be a strategy to mitigate these effects. The aim of this study was to evaluate the application of jasmonic acid, salicylic acid, cytokinin and polyamine as attenuators of salt stress in T. majus. Three levels of salt stress were used: 0 mM NaCl (no stress), 50 mM NaCl (moderate stress) and 100 mM NaCl (severe stress). Four phytohormones and a control treatment were used: control (deionized water), jasmonic acid (200 µM), salicylic acid (2 mM), cytokinin (6-benzylaminopurine – 10 µM) and polyamine (spermine – 1 mM). Growth and gas exchange parameters were evaluated. Applied in conditions of moderate salt stress, all the phytohormones were efficient in improving plant height and leaf area (except salicylic acid); cytokinin and polyamine improved the number of flowers as well as gs, A and iCE; jasmonic acid improved the stem dry mass and total dry mass. In relation to severe salt stress, applications of jasmonic acid and polyamine were efficient in improving plant height; cytokinin improved leaf dry mass as well as gs, A, E, WUE, iWUE and iCE. The application of cytokinin, polyamine and jasmonic acid can be used to mitigate moderate salt stress in T. majus.

scholarly journals Exploring the Role of Foliar Application of Aspirin on Growth and Productivity of Wheat under Control and Rainfed Conditions

2021 ◽  
Vol 3 (1) ◽  
pp. 01-11
Author(s):  
Muhammad Jazib Khan ◽  
Muhammad Fraz Ali ◽  
Shahzad Ahmad Shahwani ◽  
Abdul Waheed ◽  
Irfan Aziz
Keyword(s):  
Salicylic Acid ◽  
Acetylsalicylic Acid ◽  
Plant Height ◽  
Foliar Application ◽  
Growth Parameters ◽  
Spike Length ◽  
Growth And Yield ◽  
Control Treatment ◽  
Wheat Crop ◽  
Plant Responses

Aspirin (Acetylsalicylic acid) is an important signal molecule modulating plant responses to stress. Drought significantly decreased the growth rate and impaired the yield of wheat. Acetylsalicylic acid can improve the performance of wheat under both well-watered and drought conditions. Applying salicylic acid at a relatively low concentration positively impacted the physiological, yield, and growth parameters. In order to determine the effect of foliar application of Aspirin levels on growth, yield, and its components of wheat, two experiments, i.e., control and rainfed, were conducted to evaluate the effect of salicylic acid were carried out at glasshouse of Research Area, Department of Agronomy and university research farm Koont of PMAS-Arid Agriculture University Rawalpindi during cropping season 2019-20. Four treatments of Aspirin (Control, 120 mg/L, 180 mg/L, and 240 mg/L) for glasshouse (Control, 20 g/L, 30 g/L, 40 g/L) for rainfed were applied, which are to be known as As0, As1, As2, and As3 for both experiments. Foliar application of Aspirin solution sprayed at growth stage 37 on the Zadoks scale. Results of experiments revealed that for the 180mg/L of Aspirin (As2), improved growth parameters such as plant height, spike length, number of spikelets, and increased the wheat crop yield. In contrast, for the rainfed experiment, the plant height, spike length, number of spikelets, and increased yield were observed by applying 30 g/L (As2) of Aspirin, and the lowest results of these parameters were recorded in control treatment for both control and rainfed experiments. The overall results of this study showed that among the levels of Aspirin, the application of treatment As2 both for control and rainfed experiment, i.e., 180 mg/L for control and 30 g/L for rainfed Aspirin, have positively impacted the growth and yield parameters of wheat and bought improvement in wheat production under plant stress environment.

scholarly journals Influence of Compost Aging and Fertilizer Regimes on the Growth of Bedding Plants, Transplants and Poinsettia

1992 ◽  
Vol 10 (1) ◽  
pp. 52-54
Author(s):  
Judith R. Purman ◽  
Francis R. Gouin
Keyword(s):  
Leaf Tissue ◽  
Dry Mass ◽  
Water Soluble ◽  
Bedding Plants ◽  
Significant Difference ◽  
Dianthus Barbatus ◽  
Total Growth ◽  
Soluble Fertilizer ◽  
Dewatered Sewage Sludge ◽  
Fertilizer Regimes

Abstract Rooted cuttings of poinsettia (Euphorbia pulcherrima Willd. ex Clotzsch ‘Amy’) and seedlings of bibb lettuce (Lactusa sativa L.), baldhead cabbage (Brassica oleracea L. var. Capitata), sweet william (Dianthus barbatus L.) and pansy (Viola & Wittrockiana Gams.) were grown in Sunshine Mix and 7 experimental media containing 30-day-old (“New”) or 90-day-old (“Aged”) cocompost (polymer dewatered sewage sludge composted with processed garbage), perlite or vermiculite, and peatmoss. Plants were fertilized biweekly with water soluble fertilizer of 25N-2.2P-16.6K (25-5-20) at 250 ppm of N applied at 0, 1 or 2 wks after transplanting. The growth of all species did not vary with compost age. Dianthus and pansy plants grown in 50% “New” compost and dianthus grown in 25% “New” compost produced significantly lower top dry mass than those grown in Sunshine Mix. All other treatments for cabbage, lettuce, dianthus and pansy showed no significant difference in top growth from those grown in Sunshine Mix. Poinsettia plants grown in Sunshine Mix produced greater total growth than all other treatments except those grown in equal portions of “New” compost, peat and perlite. Lettuce and cabbage leaf tissue contained cadmium levels less than 0.5 ppm regardless of compost level.

scholarly journals Effect of Fertigation and Mulching on Growth and Yield of Guava under High Density at Various Stages of Growth in Coastal Odisha

2020 ◽  
pp. 91-97
Author(s):  
Lakshmi Poojitha Challa ◽  
B. P. Behera ◽  
P. C. Pradhan
Keyword(s):  
Plant Height ◽  
Growth Parameters ◽  
Water Soluble ◽  
Growth And Yield ◽  
Stages Of Growth ◽  
Yield Parameters ◽  
Canopy Area ◽  
Soluble Fertilizer ◽  
Harvesting Stage ◽  
Number Of Branches

An experiment was conducted on Guava with four treatments and viz., three levels of fertigation i.e., 100%, 80%, 60% of Recommended Dose of Fertilizer (RDF) with mulching and the control refers to drip irrigation with 100% RDF in soil application. The variety used in experiment is Cv Arka Amulya with a spacing of 3 m× 2.5 m. For fertigation purpose, water-soluble fertilizer of Nitrogen, Phosphorous and Potassium is used. The results showed that vegetative growth parameters viz., plant height, girth, number of primary branches were significantly affected and canopy spread was non-significantly affected at various stages of the plant growth. The maximum plant height (2.89 m), canopy area (2.16 m2), girth (19.78cm), number of branches (6) found in 100% RDF through fertigation with mulching at the harvesting stage of the crop. The interaction effect of mulching and fertigation showed significant effect on both the vegetative and yield parameters.

scholarly journals Effects of Nitrogen and NPS Fertilizer Rates on Fresh Yield of Garlic (Allium sativum L.) at Debre Berhan, Ethiopia

2020 ◽  
pp. 113-118
Author(s):  
Getachew Amare ◽  
Temesgen Mamo
Keyword(s):  
Plant Height ◽  
Growth Parameters ◽  
Block Design ◽  
Leaf Length ◽  
Above Ground Biomass ◽  
Growth Physiology ◽  
Ground Biomass ◽  
Debre Berhan ◽  
Significant Difference ◽  
Fertilizer Rates

Keeping in view of lack of recommended rates of N and NPS fertilizers, a field experiment was conducted to evaluate the effect of the newly introduced NPS fertilizer and nitrogen on growth, physiology and above ground biomass of garlic. Four NPS (0-0-0, 78.75-69-12.75, 105-92-17 and 131.25-115-21.25 kg N-P-S ha-1) and three nitrogen fertilizer rates (114.13, 228.26 and 278.33 kg N ha-1) were laid out in Randomized Complete Block Design with three replications. Significantly highest plant height (28.02 cm), leaf diameter (1.27 cm), dry and fresh weight (4.71 g and 6.11 g) and leaf length were recorded on garlic plants supplied with 105-92-17 kg N-P-S ha-1 and also the highest plant height (27.75 cm), leaf length (24.02 cm), fresh and dry weight (6.23 g and 5.04 g) were recorded on garlic plants supplied with 278.33 kg N ha-1. The interaction effect also show a significant effect in almost all the growth parameters; the early day to 50% emergence was recorded from a plot which received 228.26 kg N ha-1 and 105-92-17 kg NPS ha-1 and the highest plant height, leaf length, fresh and dry above ground biomass and leaf diameter were 29.62 cm, 25.60 cm, 6.93 g, 5.59 g and 1.4 cm, respectively were observed by the interaction of 278.33 kg N ha-1 and 105-92-17 kg N-P-S ha-1 with no significant difference with 228.26 N and 78.75-69-12.75 kg N-P-S ha−1. From this one season experiment, fertilizer rates 307.01-69-12.75 kg N-P-S ha−1 could be recommended for garlic production.

scholarly journals Doses of bokashi in the growth of two basil cultivars

2021 ◽  
Vol 6 ◽  
pp. 1-9
Author(s):  
Roberto Takane ◽  
Cyro Fragoso Silva ◽  
Jessica Soares Pereira ◽  
Christian Morimasa Takemura ◽  
Talita Angélica ◽  
...  
Keyword(s):  
Plant Height ◽  
Vegetative Growth ◽  
Aerial Part ◽  
Block Design ◽  
Dry Mass ◽  
Ocimum Basilicum ◽  
Stem Diameter ◽  
Control Treatment ◽  
Organic Fertilization ◽  
Randomized Block Design

The present work aimed to evaluate the influence of use, as well as to determine adequate doses in organic fertilization of the bokashi type in the cultivation of two basil (Ocimum basilicum L.) cultivars. Seeds from the collection of the Floriculture Laboratory of the Phytotechnics Department of the Federal University of Ceará were used. The treatments used were arranged in a randomized block design (RBD), arranged in a 2x5 factorial scheme, consisting of two cultivars of basil (Genovese and Anão) and five doses of Bokashi, namely: 0, 3, 6, 9 and 18 g.L-1. Plants that received no dose (0 g.L-1) served as a control treatment. Each treatment contained 5 repetitions, with the plot consisting of 7 pots, one plant per pot, the useful unit a pot with a basil seedling. From the transplant, applications of bokashi were started in doses of 0, 3, 6, 9, and 18 g.L-1 in both cultivars. Both applications were performed every 20 days after the first application of Bokashi. Fivety five days after transplantation in the final pot, the following variables were analyzed: plant height, stem diameter, fresh and dry mass of the aerial part and the root. The 9 g.L-1 dose of Bokashi showed the best results for the variables analyzed for both cultivars, in addition to being efficient when compared to the control, in which the vegetative growth was incipient.

scholarly journals Drought Stress Can Produce Small but not Compact Marigolds

HortScience ◽  
2004 ◽  
Vol 39 (6) ◽  
pp. 1298-1301 ◽  
Author(s):  
Marc W. van Iersel ◽  
Krishna S. Nemali
Keyword(s):  
Drought Stress ◽  
Moisture Content ◽  
Leaf Area ◽  
Plant Height ◽  
Growth Parameters ◽  
Unit Length ◽  
Dry Mass ◽  
Stem Length ◽  
Bedding Plants ◽  
Growing Medium

We examined the effectiveness of an elevated capillary mat system to maintain constant and different moisture levels in the growing medium and verify the potential of drought stress conditioning in producing small and compact bedding plants. To differentiate between plant height and compactness, we determined compactness as the leaf area or dry mass per unit stem length. Marigold `Queen Sophia' (Tagetes erecta L.) seedlings were grown in square, 9-cm-wide, 10-cm-high containers filled with a soilless growing medium. A capillary mat was laid on top of a greenhouse bench which was raised by 15 cm on one side compared to the other side to create an elevation effect. Seedlings were subirrigated by immersing the low end of the capillary mat in a reservoir of water. The amount of water moving to the higher end of the mat progressively decreased with elevation. The moisture content in the growing medium averaged from 26 to 294 mL/pot at different elevations. Regression analysis indicated that growth parameters including, shoot dry mass, leaf area, leaf number, and plant height decreased linearly with decreasing soil moisture content in the growing medium. Of all the measured growth parameters, plant height was found to be least sensitive to decreasing moisture content in the growing medium. Plants in high moisture treatments had more dry mass and leaf area per unit length of the stem compared to those in low moisture treatments. Our results indicate that drought stress can produce small, but not truly compact bedding plants.

scholarly journals Use of alternative organic compounds in the initial growth and quality of Anadenanthera colubrina (Vell. Brenan) seedlings

2020 ◽  
Vol 26 (1) ◽  
Author(s):  
Edson de Oliveira Santos ◽  
Adriana Miranda de Santana Arauco ◽  
Bruno de Oliveira Dias ◽  
Emanuel França Araújo ◽  
Cácio Luiz Boechat ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Block Design ◽  
Dry Mass ◽  
Control Treatment ◽  
Initial Growth ◽  
Organic Substrates ◽  
Renewable Materials ◽  
Randomized Block Design ◽  
Organic Compost

The use of renewable materials as a source of nutrients, besides being a solution of interest for waste disposal, may also be an effective way to reduce the high costs of inputs needed for the production of forestry seedlings. The purpose of this study was to evaluate the growth of Anadenanthera colubrina (Vell. Brenan) (angico branco) cultivated in organic substrates. A randomized block design was adopted and the treatments were distributed in a 3 × 5 factorial scheme, with three organic residues: decomposed burity (moriche palm) stem, carnaúba straw and organic compost mixed with the soil in four percentages: 20%, 40%, 60% and 80% of the composition of substrate and a control treatment with soil only, without incorporating the organic residue, with six repetitions. Ninety days after emergence, the seedlings were collected to determine the growth parameters: stem diameter (SD), height (H), of the following indexes: H/D, leaf number (LN), total chlorophyll (T), leaf area (LA), dry mass of the aerial part (DMAP), dry mass of roots (DMR), total dry mass (TDM) H/DMAP: DMAP/DMR, and Dickson Quality Index (DQI). The treatments that contained 60% and 80% of organic compost presented the best responses. It is concluded that the production of angico branco seedlings cultivated with substrate with the addition of 80:20 (organic compost: soil) presented the best results and was technically feasible according to the characteristics and indexes analyzed.

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