scholarly journals Comparative Behavior of Dracaena marginata Plants Integrated into a Cascade Cropping System with the Addition of Hydrogen Peroxide

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 218
Author(s):  
Pedro García-Caparrós ◽  
Cristina Velasquez Espino ◽  
María Teresa Lao
Keyword(s):  
Hydrogen Peroxide ◽  
Growth Parameters ◽  
Soluble Sugar ◽  
Treatment Plant ◽  
Cropping System ◽  
Control Treatment ◽  
Peat Moss ◽  
Total Soluble Sugar ◽  
Nutrient Use ◽  
Nutrient Use Efficiencies

The reuse of crop drainage into other crops, in the form of a cascade cropping system, is a feasible environmental solution where high inputs of water and fertilizer are used for crop growth and lower efficiency rates, associated with a high discharge of water and fertilizers into the environment, are present. Dracaena marginata plants were cultured in containers with sphagnum peat moss and were subjected to three different fertigation treatments for eight weeks: Dm0 (standard nutrient solution or control treatment), Dm1 (raw leachates), and Dm2 (raw leachates with additional H2O2), where the leachates were collected from a Chrysalidocarpus lutescens-Dracaena deremensis cascade cropping system. At the end of the harvesting, growth parameters, pigment concentration, leaf and root proline, total soluble sugar concentrations, and water and nutrient use efficiencies were assessed for each fertigation treatment. Plant height, root, stem, and total dry weight increased under fertigation with leachates with H2O2. The fertigation with leachates with or without H2O2 increased the red index value. There were no clear trends between the fertigation treatments with regards to pigment concentrations and biochemical parameters (proline and total soluble sugar concentrations). The addition of H2O2 to the leachate increased N concentration in the organs assessed, as well as the water and nutrient use efficiencies. There were no variations in H2PO4−, SO42−, Na+, and Mg2+ concentration in the chemical composition of the substrate between fertigation treatments. The positive results reported in this experiment suggest the potential growth of Dracaena marginata with leachate and hydrogen peroxide in a cascade cropping system.

scholarly journals Effects of Leachate Fertigation and the Addition of Hydrogen Peroxide on Growth and Nutrient Balance in Dracaena deremensis Potted Plants

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 127
Author(s):  
Pedro García-Caparrós ◽  
Cristina Velasquez Espino ◽  
María Teresa Lao
Keyword(s):  
Nutrient Solution ◽  
Soluble Sugar ◽  
Nutrient Balance ◽  
Treatment Plant ◽  
Dry Weight ◽  
Sugar Concentration ◽  
Control Treatment ◽  
Peat Moss ◽  
Clear Trend ◽  
Total Soluble Sugar

The reuse of drainages for cultivating more salt tolerant crops can be a useful tool especially in arid regions, where there are severe problems for crops water management. Dracaena deremensis L. plants were cultured in pots with sphagnum peat-moss and were subjected to three fertigation treatments for 8 weeks: control treatment or standard nutrient solution (D0), raw leachates from Chrysalidocarpus lutescens H. Wendl plants (DL) and the same leachate blending with H2O2 (1.2 M) at 1% (v/v) (DL + H2O2). After harvesting, ornamental and biomass parameters, leaf and root proline and total soluble sugar concentration and nutrient balance were assessed in each fertigation treatment. Plant height, leaf and total dry weight had the highest values in plants fertigated with leachates with H2O2, whereas root length, leaf number, RGB values and pigment concentration declined significantly in plants fertigated with leachates from C. lutescens with or without H2O2. The fertigation with leachates, regardless of the presence or absence of H2O2 increased root and leaf proline concentration. Nevertheless, root and leaf total soluble sugar concentration did not show a clear trend under the treatments assessed. Regarding nutrient balance, the addition of H2O2 in the leachate resulted in an increase in plant nutrient uptake and efficiency compared to the control treatment. The fertigation with leachates with or without H2O2 increased nitrogen and potassium leached per plant compared to plants fertigated with the standard nutrient solution. The reuse of drainages is a viable option to produce ornamental plants reducing the problematic associated with the water consumption and the release of nutrients into the environment.

scholarly journals Effects of cadmium stress on growth and physiological characteristics of sassafras seedlings

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hongyi Zhao ◽  
Juelan Guan ◽  
Qing Liang ◽  
Xueyuan Zhang ◽  
Hongling Hu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Cadmium Concentration ◽  
Cadmium Stress ◽  
Proline Content ◽  
Physiological Characteristics ◽  
Control Treatment ◽  
Gas Exchange Parameters ◽  
Photosynthetic Gas Exchange

AbstractThe effects of cadmium stress on the growth and physiological characteristics of Sassafras tzumu Hemsl. were studied in pot experiments. Five Cd levels were tested [CT(Control Treatment) : 0 mg/kg, Cd5: 5 mg/kg, Cd20: 20 mg/kg, Cd50: 50 mg/kg, and Cd100: 100 mg/kg]. The growth and physiological characteristics of the sassafras seedlings in each level were measured. The results showed that soil Cd had negative influences on sassafras growth and reduced the net growth of plant height and the biomass of leaf, branch and root. Significant reductions were recorded in root biomass by 18.18%(Cd5), 27.35%(Cd20), 27.57%(Cd50) and 28.95%(Cd100). The contents of hydrogen peroxide decreased first then increased while malondialdehyde showed the opposite trend with increasing cadmium concentration. Decreases were found in hydrogen peroxide contents by 10.96%(Cd5), 11.82%(Cd20) and 7.02%(Cd50); increases were found in malondialdehyde contents by 15.47%(Cd5), 16.07%(Cd20) and 7.85%(Cd50), indicating that cadmium stress had a certain effect on the peroxidation of the inner cell membranes in the seedlings that resulted in damage to the cell membrane structure. Superoxide dismutase activity decreased among treatments by 17.05%(Cd5), 10,68%(Cd20), 20.85%(Cd50) and 8.91%(Cd100), while peroxidase activity increased steadily with increasing cadmium concentration; these results suggest that peroxidase is likely the main protective enzyme involved in the reactive oxygen removal system in sassafras seedlings. Upward trends were observed in proline content by 90.76%(Cd5), 74.36%(Cd20), 99.73%(Cd50) and 126.01%(Cd100). The increase in proline content with increasing cadmium concentration indicated that cadmium stress induced proline synthesis to resist osmotic stress in the seedlings. Compared to that in CT, the soluble sugar content declined under the different treatments by 32.84%(Cd5), 5.85%(Cd20), 25.55%(Cd50) and 38.69%(Cd100). Increases were observed in the soluble protein content by 2.34%(Cd5), 21.36%(Cd20), 53.15%(Cd50) and 24.22%(Cd100). At different levels of cadmium stress, the chlorophyll content in the seedlings first increased and then decreased, and it was higher in the Cd5 and Cd20 treatments than that in the CT treatment. These results reflected that cadmium had photosynthesis-promoting effects at low concentrations and photosynthesis-suppressing effects at high concentrations. The photosynthetic gas exchange parameters and photosynthetic light-response parameters showed downward trends with increasing cadmium concentration compared with those in CT; these results reflected the negative effects of cadmium stress on photosynthesis in sassafras seedlings.

Effect of Mechanical Damages and Storage Conditions on Quality of Markies cv. Potatoes for Processing

2019 ◽  
pp. 1-5
Author(s):  
Dreice Nascimento Gonçalves ◽  
Luciana Gomes Soares ◽  
Ariana Mota Pereira ◽  
Paula Acácia Silva Ramos ◽  
Maria Eduarda Da Silva Guimarães ◽  
...  
Keyword(s):  
Soluble Sugar ◽  
Mechanical Damage ◽  
Storage Conditions ◽  
Reducing Sugar ◽  
Control Treatment ◽  
Experimental Unit ◽  
Total Soluble Sugar ◽  
And Control ◽  
And Storage

Aims: Evaluate whether mechanical damage and storage conditions affect the quality of the ‘Markies’ potato for processing. Study Design: The experimental design was the completely randomized, in the scheme of split-plots. The plots were composed of treatments with and without mechanical damage and the subplots were made up by the evaluation times, with 5 replicates, where the experimental unit was composed of 2 tubers. Place and Duration of Study: Tubers of the ‘Markies’ cultivar from the producing region of Perdizes, State of Minas Gerais, were planted in June 2016 and harvested in October 2016. Methodology: The tubers were stored for 2 months at 8°C, and further divided into treatment with damage, in which the tubers were subjected to impact and abrasion; and control treatment, in which the tubers were not damaged. After that, they were stored at 28°C and evaluated for their loss of loss of accumulated fresh mass (FML), total soluble sugar (TSS), reducing sugar (RS), non-reducing sugar (NRS) and color after frying in the periods of 0, 12, 24, 36 and 48 h after being placed at room temperature. Results: The mechanical damage in the tubers increased FML, however, it did not affect the content of TSS, NRS, RS and color after frying. Increases were observed in the content of TSS and NRS after 12 h of evaluation. Grade 2 was assigned to the coloring scale after frying for the tubers regardless of treatment or evaluation period. Conclusion: Mechanical damage increases the FML and the ‘Markies’ cultivar is suitable for the industry of pre-fried potato processing even under the occurrence of mechanical damage and exposure to high temperatures.

scholarly journals DEVELOPMENT OF A NUTRIENT SOURCE FOR SUSTAINING LOW CONCENTRATIONS IN GREENHOUSE SUBSTRATES

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1170f-1170
Author(s):  
Kimberly A. Williams ◽  
Paul V. Nelson
Keyword(s):  
Soil Solution ◽  
Growth Parameters ◽  
Waste Water Treatment ◽  
Cropping System ◽  
Chrysanthemum Morifolium ◽  
Peat Moss ◽  
Bacterial Cells ◽  
Nutrient Source ◽  
Biotechnological Production ◽  
Liquid Fertilization

A sustained release nutrient source suitable for maintaining steady, low (1 mM) N concentrations in the soil solution was sought as a component to be used in a system for reducing nutrients in the effluent of an open greenhouse cropping system. Several nutrient sources were evaluated as a N source incorporated singly in a medium of 1 sphagnum peat moss: 1 vermiculite and used to produce Chrysanthemum × morifolium `Sunny Mandalay'. All nutrients except N were applied additional to the sources tested. Sources tested included specific non-viable bacterial (B) and fungal (F) organisms from commercial biotechnological production lines, a microbial sludge mixture (S) from waste-water treatment, poultry waste-methane generator sludge (PS), mico-Osmocote (O), unsteamed bonemeal (BM), poultry feather meal (FM), and three-yeer aged pine needles (PM) at rates from 0.15 to 1.3 kg N·m-3. Based on periodic vacuum extracted soil solution analyses, leaf analyses, and plant growth, the efficacy of sources was in the order B, O> BM> S> PS> F, FM> PN. The 3 best sources provided sufficient N for 6 weeks; however, growth parameters did not differ from a complete liquid fertilization control until after 9 weeks. N in soil solution from the bacterial cells was at weeks 1, 3, 5, and 7: 142, 200, 73, and 3, mg·l-1, respectively.

scholarly journals Sorption of urea hydrogen peroxide by co-pyrolysed bone meal and cow dung slowed-down phosphorus and nitrogen releases but boosted agronomic efficiency

2020 ◽  
Vol 63 (1) ◽  
Author(s):  
Deogratius Luyima ◽  
Jwakyung Sung ◽  
Jae-Han Lee ◽  
Seong-Ah Woo ◽  
Seong-Jin Park ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Slow Release ◽  
Animal Manure ◽  
Cow Dung ◽  
Bone Meal ◽  
Ammonium Ions ◽  
Agronomic Efficiency ◽  
Nutrient Use ◽  
Urea Hydrogen Peroxide ◽  
Nutrient Use Efficiencies

Abstract Co-pyrolysis of animal manure biomass with bone meal (BM) and soaking of the resultant biochar in urea containing solutions may offer a sustainable and cheap way of formulating slow-release nitrogen (N) and phosphorus (P) fertilisers. This method can lead to optimisation of the carbon sequestration capacity of the biochar, abatement of environmental pollution by P and N and alleviation of the severity of the projected future scarcity of P. A few studies have indicated that sorption can create efficient slow-release fertilisers although all of them utilised charged moieties such as ammonium ions to formulate them and as a result, there is a paucity of data concerning the efficiency of fertilisers formulated using uncharged compounds like urea. It’s against that background that we examined the possibility of leveraging co-pyrolysis and sorption with urea containing solutions to formulate slow-release N and P fertilisers along with assessing the agronomic efficiency of the formulated fertilisers through cultivating lettuce in pots for two seasons. Both urea-hydrogen peroxide (UHP) and urea were utilised as N sources. UHP (CDBM-UHP) and urea (CDBM-Urea) containing biochars averagely released 64.40% and 87.00% of the added N, respectively over the 28-day incubation period with the amount of N released decreasing with increasing concentrations of BM in the biochar. Lettuce yields and nutrient use efficiencies of N and P were higher in the CDBM-UHP than in the CDBM-Urea treatments. It’s therefore clear that sorption of UHP by BM containing biochar concomitantly slows-down releases of N and P and boosts the agronomic efficiency of the fertilisers.

scholarly journals Post-Harvest Quality of cv. Markies Potatoes Submited to Mechancial Damages

2020 ◽  
Vol 12 (2) ◽  
pp. 124
Author(s):  
Dreice Nascimento Gonçalves ◽  
Ariana Mota Pereira ◽  
Luciana Gomes Soares ◽  
Maria Eduarda da Silva Guimarães ◽  
Kharen Priscilla de Oliveira Salomão Petrucci ◽  
...  
Keyword(s):  
Carbohydrate Metabolism ◽  
Room Temperature ◽  
Soluble Sugar ◽  
Mechanical Damage ◽  
Storage Conditions ◽  
Reducing Sugar ◽  
Control Treatment ◽  
Total Soluble Sugar ◽  
Industrial Processing ◽  
Abrasion Damage

Mechanical damage and storage conditions may alter carbohydrate metabolism and oxidative enzyme activity, causing darkening and impairing the use of tubers in pre-fried potato processing industry. The objective of this study was to evaluate the enzymatic changes and carbohydrate metabolism of ‘Markies’ potato tubers subjected to mechanical damage and exposed to high temperatures before processing. The tubers were stored for 4 months at 8 °C, and further divided into treatment with impact and abrasion damage; and control treatment, in which the tubers were not damaged. Afterwards, they were stored at 28 °C room temperature, evaluated for loss of accumulated fresh mass (FML); total soluble sugar (TSS), reducing sugar (RS) and non-reducing sugar (NRS); color after frying and activity of polyphenoloxidase (PPO) and peroxidase (POD) at 0, 12, 24, 36 and 48 h after placed at room temperature. The mechanical damages incremented FML, RS, PPO and TSS, NRS and POD up to 35.6, 34, and 22 h, respectively. Regardless of the occurrence of mechanical damage and the period of evaluation, the sticks showed a light color after frying and were classified in category 2. The increase in the evaluation time led to the rise in FML and the PPO activity. It is concluded that the mechanical damages increase the FML and cause darkening of the tips of the sticks after frying, however this variety still display qualities that are suitable for industrial processing.

scholarly journals Effect of New Pre-Emergence Herbicides on Quality and Yield of Potato and Its Associated Weeds

2021 ◽  
Vol 13 (17) ◽  
pp. 9796
Author(s):  
Ibrahim S. Abdallah ◽  
Mohamed A. M. Atia ◽  
Amira K. Nasrallah ◽  
Hossam S. El-Beltagi ◽  
Farida F. Kabil ◽  
...  
Keyword(s):  
Weed Control ◽  
Tuber Yield ◽  
Growth Parameters ◽  
Starch Content ◽  
Soluble Sugar ◽  
Total Yield ◽  
Total Soluble Protein ◽  
Tuber Quality ◽  
Total Soluble Sugar ◽  
The Impact

Potato is an economically important vegetable crop in Egypt. Weed infestation, especially broad-leafed, during the vegetative growth stage substantially affects both crop yield and tuber quality. In the current study, the impact of new ready-mix pre-emergent herbicides on broadleaf weeds, tuber yield, and quality was evaluated. The two-year field experiment comprised the following treatments: (1) Un-weeded control, (2) Hand hoeing, (3) Sencor, (4) Ecopart, (5) Zeus, (6) Kroki, and (7) Flomex. The results showed that weed control treatments significantly reduced the weed density compared to un-weeded control and the herbicides efficacy reached over 90%. The herbicidal treatments also significantly increased the activity of antioxidant enzymes peroxidases (POX) and catalase (CAT) and improved the non-enzymatic antioxidant (carotenoids) compared to un-weeded control. Conversely, the higher content of malondialdehyde (MDA) in potato leaves was obtained for un-weeded control. Moreover, weed control treatments caused significant enhancement in plant growth parameters, yield, and its components in addition to tuber quality of potato. Compared to the un-weeded control, maximum tuber yield was observed in Flomex followed by Ecopart, Kroki, Zeus, and Sencor, respectively. The higher number of tubers and total yield were recorded in plants treated with Flomex plus compared to all the other treatments. Higher content of total soluble sugar, total soluble protein, and total starch content was observed in weed control treatments compared with un-weeded control. Based on Pearson’s correlation and heatmap analysis, the changes in agro-physiological parameters data are linked to the herbicidal treatments. The results indicate that the applied herbicides could be alternative products for Sencor and an option for controlling broadleaved weeds. However, further studies are needed to ensure their efficacy and safety under other conditions.

scholarly journals Effect of Organic (Jatropha Cake) and NPK Fertilizers on Improving Biochemical Components and Antioxidant Properties of Five Cowpea (Vigna unguiculata L. Walp.) Genotypes

2019 ◽  
Vol 11 (10) ◽  
pp. 48
Author(s):  
Pierre Alexandre Eric Djifaby Sombié ◽  
Hemayoro Sama ◽  
Hamadou Sidibé ◽  
Martin Kiendrébéogo
Keyword(s):  
Growth Parameters ◽  
Block Design ◽  
Organic Fertilizer ◽  
Soluble Sugar ◽  
Antioxidant Properties ◽  
Control Treatment ◽  
Quality Traits ◽  
Npk Fertilizers ◽  
Biochemical Components ◽  
Jatropha Cake

Organic and inorganic fertilizers improve the nutritional quality of crop. An experiment in pots of four treatments was conducted in a randomized complete block design in order to evaluate the effect of the application of organic and NPK fertilizers on the biochemical components and antioxidant activities of five cowpea genotypes. Results showed that organic fertilizer and the mixture of organic and NPK fertilizer have significantly (p < 0.05) increased the growth parameters and leaves quality traits of cowpea. The response of cowpea under the different treatment is also function of genotype type. The PCA and the dendrogram performed basis on the different fertilizers effect on growth parameters and leaves quality trait divided the treatments into three main classes. Class I comprising NPK + Jatropha treatment strongly contributed to lycopene, β-carotene and total chlorophyll contents, height and number of branches. Class II comprising NPK treatment solely and Jatropha treatment solely are highly linked to the variables FRAP, DPPH and protein content. Class III comprising control treatment strongly contributed to salicylic, soluble sugar, phenolics and flavonoids contents, and trypsin inhibition activity. The Jatropha cake could be used solely or in mixture with NPK to improve growth and the quality traits of cowpea leaves.

scholarly journals Biocompatibility Effect of Bradyrhizobium japonicum and Trichoderma Strains on Growth, Nodulation and Physiological Traits of Soybean (Glycine max L.) under Water Deficit Conditions

2020 ◽  
pp. 52-66
Author(s):  
Sahar El- Nahrawy ◽  
Mohssen Elbagory ◽  
Alaa El-Dein Omara
Keyword(s):  
Bradyrhizobium Japonicum ◽  
Block Design ◽  
Soluble Sugar ◽  
Trichoderma Viride ◽  
Dry Weight ◽  
Physiological Traits ◽  
Control Treatment ◽  
N Content ◽  
Total Soluble Sugar ◽  
Soybean Plants

In the future, drought are expected to increase, affecting the productivity of crops sensitive to water scarcity. Through N2-fixation process, soybean is capable of achieving its nitrogen demands, however, this process is inhibited under drought stress conditions. Therefore, it is vital to find suitable solutions for the agricultural sustainability of soybean. Under pot experiment, biocompatibility was studied between Bradyrhizobium japonicum and Trichoderma strains (Trichoderma viride, T. harzianum and T. kongii) for their ability to stimulate the growth, nodulation, N content and photosynthetic pigments of soybean plants under different irrigation intervals (every 2 days (I1), every 4 days (I2), and every 6 days (I3)). The experiment was conducted in summer 2020 with a split-plot randomized complete block design and six replicates. Among the Trichoderma strains, T. harzianum was the most tolerant to growth and auxin production in the maximum 25% PEG 6000 (poly ethylene glycol) concentration. Also, co-inoculation treatment (irrigation every 6 days and inoculation with B. japonicum + T. harzianum) recorded an increase rate reached to 69.4% for shoot length, 102.53% for root length, 79.06% for shoot dry weight, 103.44% for root dry weight and 178.57% for N content compared to control treatment. For physiological traits (chlorophyll a, b, carotenoids and total soluble sugar), there was a significant increase was observed when soybean plants inoculated with B. japonicum + T. harzianum treatment followed by B. japonicum + T. kongii treatment, under irrigation every 6 days condition. On the contrary, a decrease was observed in proline content for the same treatments. Thus, an adequate microbial consortium of Bradyrhizobium - Trichoderma, could represent a promising practical method for increasing the productivity of soybean especially when grown under drought conditions.

scholarly journals Amido e açúcares solúveis totais em pós-colheita de inflorescências de bastão-de-imperador

2018 ◽  
Vol 24 (4) ◽  
pp. 435-442 ◽  
Author(s):  
Drucylla Guerra Mattos ◽  
Patrícia Duarte de Oliveira Paiva ◽  
Heloisa Helena De Siqueira Elias ◽  
Eduardo Valério De Barros Vilas Boas ◽  
Lucas Ferreira Rodrigues ◽  
...  
Keyword(s):  
Starch Content ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Storage Period ◽  
Control Treatment ◽  
Total Soluble Sugars ◽  
Total Soluble Sugar ◽  
Carnauba Wax ◽  
Opening Stage

Floral opening stage during harvest and use of postharvest techniques, such as inflorescence coating with carnauba wax, may influence quality maintenance for commercialization. The aim was to evaluate the carbohydrate content of torch ginger inflorescences harvested at two different opening stages and treated with different concentrations of carnauba wax. The inflorescences were harvested with semi-open (basal bracts beginning their expansion process) and open bracts (fully expanded basal bracts and opening of the smaller bracts on interior of the inflorescence) and received the application of carnauba wax at concentrations of 0.75%; 1.5% or 3.0%, in addition to a control treatment, without wax application. After the treatment, the floral stems were maintained at 16 and 21 oC for 20 days. During the storage period, five bracts samples (external and internal bracts separately - in open inflorescences, external and internal bracts together - in semi-open inflorescences) were carried out every three days for evaluation of total soluble sugars and starch content. Contents of total soluble sugars and starch differed between the different types of bracts collected and throughout the storage period evaluated, and could indicate a remobilization of reserves. The concentration of 3.0% carnauba waxinduced higher total soluble sugar content. However, this content does not affect the longevity of torch ginger at the two evaluated floral opening stages.

Sign in / Sign up

Export Citation Format

Share Document