scholarly journals Effect of compost and natural rocks as partial substitutes for NPK mineral fertilizers on yield and fruit quality of ‘Flame’ seedless grapevine grown in two different locations of Egypt

2019 ◽  
Vol 17 (3) ◽  
pp. e0903
Author(s):  
Mohyeldein I. Slama ◽  
Alaa E. K. Omar ◽  
Saber S. Bassiony ◽  
Ghoneem M. Ghoneem
Keyword(s):  
Raw Materials ◽  
Potassium Sulfate ◽  
Soluble Solids ◽  
Partial Replacement ◽  
Nitrate Content ◽  
Mineral Fertilizers ◽  
Anthocyanin Content ◽  
Mineral Fertilization ◽  
Seedless Grape ◽  
Solids Content

Aim of study: To evaluate the use of compost and natural rocks as partial replacement of mineral fertilizers in ‘Flame’ seedless grape vineyards.Area of study: The present work was conducted during three successive seasons (2016, 2017 and 2018), being the first season a preliminary trial on 4-yr old grapes cultivated in two different soil types (sandy and clay) at two different locations, Egypt (Abo Galeb, Giza governorate; EL-Mahala, Gharbia governorate).Material and methods: Treatments were applied as natural raw materials at 20, 40, 60, 80 and 100% out of recommended mineral NPK rate. The mineral fertilizers used were ammonium sulfate (21.6% N), calcium super phosphate (15.5% P2O5) and potassium sulfate (48% K2O). The natural rocks used were phosphate rock (22.0% P2O5) and Feldspar (10.12% K2O). Yield and fruit characteristics and leaf mineral content were determined.Main results: Using compost in combination with natural rocks enriched with NPK mobilization bacteria and mineral NPK enhanced leaf nutrients content and gave the highest yield and cluster weight. This mix also improved berries physical and chemical characteristics. There was an increase in soluble solids content (SSC), SSC/acid ratio, and anthocyanin content, associated with a reduction in nitrate content of the berry juice. The most pronounced effect was related to using 60% mineral fertilization + 40% organic and natural rocks in both vineyard locations.Research highlights: We can reduce the recommended doses of mineral NPK by about 40%, reducing then the soil pollution.

Effect of aminoethoxyvinylglycine (AVG) on quality, berry set and coloration of ‘Alphonse Lavallée’ table grapes

2021 ◽  
pp. 1-7
Author(s):  
Zehra Babalık
Keyword(s):  
Ethylene Biosynthesis ◽  
Grape Berry ◽  
Soluble Solids ◽  
Anthocyanin Content ◽  
Quality Properties ◽  
Table Grapes ◽  
Colour Parameters ◽  
Length Width ◽  
Solids Content ◽  
Berry Set

Abstract The effect of different concentrations of aminoethoxyvinylglycine (AVG; 0 (control), 250, 500, 750 and 1000 mg/l), an ethylene biosynthesis inhibitor, on grape berry set and fruit quality was evaluated under vineyard conditions. Treatments were performed on ‘Alphonse Lavallée’ grape cultivar at full bloom stage for two years. Cluster and berry growth (length, width and weight), firmness, soluble solids content, yield, berry set, anthocyanin content and colour parameters were determined on treated and untreated (control) fruits. As a result of the study, the effects of AVG concentrations on firmness were not significant. When AVG applications were compared with control, it is determined that some quality properties were statistically affected, the others were not. Fruit set was increased by lower concentrations of AVG (250 mg/l) and anthocyanin content was increased by higher concentrations of AVG (750 mg/l).

scholarly journals The Quality of Superior Seedless Bunches during Shelf Life as Determined by Growth on Different Rootstocks

Agriculture ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 990
Author(s):  
A. A. Lo’ay ◽  
Hamed Ismail ◽  
Hazem S. Kassem
Keyword(s):  
Shelf Life ◽  
Soluble Solids ◽  
Ion Leakage ◽  
Soluble Solids Content ◽  
Close Attention ◽  
Oxidative Reactions ◽  
Seedless Grape ◽  
Metabolism Enzyme ◽  
Solids Content

Vineyard rootstocks are an important tool in the local and international market for growing the Superior Seedless grape cultivar, which is highly favored by customers. As a result, it is vital to pay close attention to the quality of clusters during handling. The current study aimed to determine whether Superior Seedless vines can be grown on specific rootstocks, resulting in higher quality during shelf life. Vines of the Superior Seedless vine cultivar that were used were 13 years old and had been grown on sandy soil. These vines were grafted onto four different rootstocks (genotypes), namely Freedom, 1103 Paulsen, SO4, and Own Root. The soluble solids content (SSC%) was selected as 16%. Bunches were subsequently stored in the lab at 27 ± 1 °C with 57 ± 3% air relative humidity for three days. Rootstock 1103 Paulsen’s quality was found to be superior to that of the other rootstocks, according to the results of the study. Rootstock 1103 Paulsen maintained its ascorbic acid (AA) content, which is reflected in its antioxidant capacity, according to the results. In addition, lipid peroxidation accumulation and ion leakage percentages indicated that oxidative reactions were at their lowest levels. The results show that 1103 Paulsen decreases cellular metabolism enzyme activities at the shelf life level and improves the bunch quality of Superior Seedless (scion) grapes within 4 days of application. As a whole, the results show that the 1103 Paulsen rootstock produces Superior Seedless bunches of a high quality that is preserved throughout the shelf life period.

Comparison of Economic Efficiency of Rapeseed Production in Farms with Varied Fertilization Variants

2016 ◽  
Vol 20 (2) ◽  
pp. 63-70
Author(s):  
Tomasz K. Dobek ◽  
Paweł Kołosowski
Keyword(s):  
Economic Efficiency ◽  
Raw Materials ◽  
Production Costs ◽  
Mineral Fertilizers ◽  
Organic Fertilization ◽  
Mineral Fertilization ◽  
Rapeseed Production ◽  
Winter Rapeseed ◽  
Materials Used ◽  
Intensive Breeding

AbstractIntensive breeding is related to formation of considerable amount of manure which may be used as a natural fertilizer. Manure fertilization may cause reduction of the amount of applied mineral fertilizers and thus reduction of production costs. It may particularly relate to the species with great fertilization requirements such as winter rapeseed. The objective of the research was to compare economic efficiency of rapeseed production in two farms which use different fertilization variants. In one, only mineral fertilizers were used and in the second one – mineral fertilization was supplemented with manure organic fertilization. The use of manure caused reduction of expenditures on materials and raw materials used in production, in particular of fertilizers. At comparable yields obtained by two farms, technology based on manure fertilization proved to be more efficient.

scholarly journals Technological and nutritional assessment of dry pasta with oatmeal and the microalga Spirulina platensis

2014 ◽  
Vol 17 (4) ◽  
pp. 296-304 ◽  
Author(s):  
Fernanda Arnhold Pagnussatt ◽  
Franciela Spier ◽  
Telma Elita Bertolin ◽  
Jorge Alberto Vieira Costa ◽  
Luiz Carlos Gutkoski
Keyword(s):  
Wheat Flour ◽  
Spirulina Platensis ◽  
Nutritional Assessment ◽  
Physiological Role ◽  
Arthrospira Platensis ◽  
Raw Material ◽  
Soluble Solids ◽  
Partial Replacement ◽  
Human Organism ◽  
Solids Content

Wheat flour is the most important raw material in the production of pasta. The production process consists of mixing water and flour, kneading, extrusion and drying. Oats and the microalga Spirulina platensis play a physiological role in the growth, development and maintenance of the human organism due to their high nutritional value. The aim of this study was to assess the technological and nutritional properties of dry pasta prepared with the addition of oatmeal and Spirulina platensis. The wheat flour was characterized and the effect of partial replacement by oatmeal and Spirulina platensis (Arthrospira platensis) was evaluated using response surface methodology (RSM). The mixtures were analysed for moisture, protein, ash, colour, particle size, falling number and alveography. The formulated pastas were dried and evaluated for moisture, colour, cooking test, acidity, proximate composition and amino acids. Generally, the addition of Spirulina platensis influenced the soluble solids content and colour of the pasta, while the oatmeal mainly affected the acid content. The oatmeal increased the values of crude protein and total dietary fibre (13.06%) when compared with the commercial pasta (2.40%) and may be considered as a source of fibre.

scholarly journals Improved Yield, Fruit Quality, and Shelf Life in ‘Flame Seedless’ Grapevine with Pre-Harvest Foliar Applications of Forchlorfenuron, Gibberellic Acid, and Abscisic Acid

2020 ◽  
Vol 28 (1) ◽  
pp. 77-86
Author(s):  
Hoda A. Khalil
Keyword(s):  
Abscisic Acid ◽  
Gibberellic Acid ◽  
Shelf Life ◽  
Soluble Solids ◽  
Anthocyanin Content ◽  
Fruit Firmness ◽  
Combined Use ◽  
Seedless Grape ◽  
Keeping Quality ◽  
Quality And Shelf Life

AbstractThe effect of gibberellic acid (GA3), forchlorfenuron (CPPU), and abscisic acid (ABA) on the parameters of yield of ‘Flame Seedless’ grapes was investigated. The clusters of 8-year-old grapevines were sprayed with solutions: GA3 at 25 mg·dm−3, CPPU at 10 mg·dm−3, and ABA at 300 mg·dm−3, alone or in combinations. GA3 and CPPU treatment increased yield, cluster weight and length, berry weight and diameter, as well as fruit firmness, but reduced the total soluble solids (TSS) and intensity of berry color. Anthocyanin content of berries treated with GA3 and CPPU increased significantly by ABA treatment. Shelf life was increased by GA3 and CPPU treatments, as they decreased the percentage of weight loss, shattering, and unmarketable berries after storing at 20 °C for 7 days. Thus, it can be concluded that the combined use of GA3, CPPU, and ABA may be an efficient practice for fruit enlargement, coloration, and keeping quality in ‘Flame Seedless’ grape.

scholarly journals Ripening Physiology in `Navaho' Thornless Blackberries: Color, Respiration, Ethylene Production, Softening, and Compositional Changes

2000 ◽  
Vol 125 (3) ◽  
pp. 357-363 ◽  
Author(s):  
P. Perkins-Veazie ◽  
J.R. Clark ◽  
D.J. Huber ◽  
E.A. Baldwin
Keyword(s):  
Ethylene Production ◽  
Acc Oxidase ◽  
Titratable Acidity ◽  
Water Soluble ◽  
Soluble Solids ◽  
Anthocyanin Content ◽  
Uronic Acids ◽  
Thornless Blackberry ◽  
Solids Content ◽  
Volatile Production

Fruit were harvested from an erect, thornless blackberry (Rubus L. subgenus Rubus Watson, `Navaho' to study ripening changes. Soluble solids content increased between the red (unripe) and dull-black (overripe) stages of ripening while titratable acidity decreased sharply between the mottled and shiny-black ripeness stages. Anthocyanin content increased sharply between the mottled and shiny-black stages. Firmness of drupelet and receptacle tissues decreased between the mottled and shiny-black stages of ripeness. In whole blackberries, total uronic acids decreased, and water soluble uronic acids increased between the green-red and shiny-black ripeness stages. Volatile production paralleled ripening changes, and was highest in dull-black fruit, with alcohols and aldehydes predominating. Respiration of intact fruit maintained in water decreased between the green and red ripeness stages and increased at the mottled (part-black) and black ripeness stages. Ethylene production remained below 10 nmol·kg-1·h-1 until the dull-black (overripe) stage of maturity. Free 1-aminocyclopropane-1-carboxylic acid (ACC) and ACC oxidase did not increase in berries until the shiny-black stage, corresponding with the onset of detectable ethylene production. ACC oxidase activity decreased in the drupelet tissue (0.5 to 0.01 μmol·kg-1·h-1) and increased in the receptacle tissue (2 to 3.8 μmol·kg-1·h-1) as fruit changed from red to dull black. These results indicate that ripening in blackberries may be initiated in the receptacle tissue. Ripening in blackberries is likely independent of ethylene, but ethylene may regulate berry detachment from pedicels, thus controlling timing of fruit harvests.

scholarly journals High CO2 Storage Improves the Shelf Life of `Arapaho' and `Navaho' Blackberries

HortScience ◽  
2000 ◽  
Vol 35 (4) ◽  
pp. 556C-556b
Author(s):  
P. Perkins-Veazie ◽  
J.K. Collins
Keyword(s):  
Shelf Life ◽  
Co2 Storage ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Anthocyanin Content ◽  
Low Oxygen ◽  
Off Flavors ◽  
Solids Content ◽  
Atmosphere Storage ◽  
Treatment Application

Application of modified-atmosphere storage (MA) (high carbon dioxide and/or low oxygen) extends the shelf life of several fruits. This study was done to determine the effects of MA on quality and flavor of blackberries. `Navaho' and `Arapaho' blackberries were harvested in 1998 and 1999, precooled overnight at 2 °C, and placed in 0.5-L treatment jars. Treatments of 15% CO2/10% O2 or of air (0.03% CO2/21% O2) were applied at 2 °C for 3, 7, or 14 days. After treatment application, jars were held at 2 °C for an additional 11, 7, or 0 days, respectively. Seven and 14 days of application of CO2 reduced the incidence of decayed and leaky berries by 10% to 20% for both `Arapaho' and `Navaho', but firm berries decreased 10% after 14 days of treatment. Titratable acidity was slightly lower, and pH higher, in control fruit but soluble solids content was not affected by treatment. Anthocyanin content was not affected by treatment in `Arapaho' berries but was lower in `Navaho' berries after 7 and 14 days of treatment. Samples taken for taste tests after 3 and 7 days of treatment had no off-odors or off-flavors. `Arapaho' and `Navaho' blackberries benefitted from high CO2 storage, with a minimum of 7 days of treatment application needed to increase marketable berries by 10%.

scholarly journals Bone meal as a source of phosphorus for forage sugarcane1

2019 ◽  
Vol 49 ◽  
Author(s):  
Wesley Mendes da Silva ◽  
Marco Antonio Camillo de Carvalho ◽  
Oscar Mitsuo Yamashita ◽  
Tauan Rimoldi Tavanti ◽  
Renan Francisco Rimoldi Tavanti
Keyword(s):  
Plant Tissue ◽  
Block Design ◽  
Quadratic Functions ◽  
Soluble Solids ◽  
Mineral Fertilizers ◽  
Bone Meal ◽  
Mineral Fertilization ◽  
Single Superphosphate ◽  
Total Soluble Solids ◽  
Randomized Block Design

ABSTRACT Phosphate fertilizers of organic origin may represent a viable alternative for the replacement of mineral fertilizers in the nutrition of crops such as forage sugarcane. This study aimed to investigate the effects of phosphate fertilization with bone meal and single superphosphate on the concentration of phosphorus (P) in the plant tissue, total soluble solids and yield aspects of forage sugarcane. A complete randomized block design was used, in a 2 × 5 factorial scheme, with four replicates. The treatments consisted of combining two phosphorus sources (single superphosphate and bone meal) and five P2O5 doses (0 kg ha-1, 50 kg ha-1, 100 kg ha-1, 150 kg ha-1 and 200 kg ha-1). Sugarcane plants fertilized with the addition of bone meal showed an increase in height and number of nodes (13 % and 15 %, respectively), when compared to the mineral fertilization with single superphosphate. The sugarcane attributes, in response to the P2O5 doses, were described by quadratic functions. The dose of 95.80 kg ha-1 of P2O5 in the bone meal led to the highest concentration of P in the plant tissue (3.60 g kg-1). The comparison between the sources of P at the doses of 100 kg ha-1 and 150 kg ha-1 of P2O5 showed that the total soluble solids content was 8.62 % and 13.84 % higher, respectively, in plants fertilized with bone meal.

Yield and Characteristics of Melon Fruits under Different Fertilization Management and Soil Cover

2019 ◽  
pp. 1-9
Author(s):  
Jackson Teixeira Lobo ◽  
Witalo da Silva Sales ◽  
José Fabrício Alves Feitosa ◽  
Juscelino Martins Costa Junior ◽  
Reynaldo Teodoro De Fatima ◽  
...  
Keyword(s):  
Soil Cover ◽  
Block Design ◽  
Soluble Solids ◽  
Plastic Mulch ◽  
Organic Fertilization ◽  
Mineral Fertilization ◽  
Randomized Complete Block Design ◽  
Solids Content ◽  
The City ◽  
Best Responses

Aims: To evaluate the 'Canary' and 'Hale's Best Jumbo' melon yield and fruit characteristics as a function of fertilization management and soil cover with mulch. Study Design: The design was a randomized complete block design in a 2x3x2 factorial scheme, with three replications and seven plants per plot. Place and Duration of Study: The experiment was conducted from June to September 2015, at the Center of Agrarian and Biodiversity Sciences of the Federal University of Cariri, located in the city of Crato, Cariri region, Brazil. Methodology: Two varieties of melon ('Canary' and 'Hale's Best Jumbo') were studied under three fertilization managements (mineral fertilization via soil, mineral fertilization via soil + organic fertilization and mineral fertilization via soil + foliar fertilization) with the presence or absence of soil cover with polyethylene mulch. Results: The use of mineral + organic fertilization and mineral + leaf fertilization promoted an increase in fruit mass and yield of approximately 3.93 t ha-1 (25.50%) and 4.64 t ha-1 (30%), respectively. Both melon cultivars presented the best responses grown on plastic mulch, with yield increases of 79.66% and 26.16% for 'Canary' and 'Hale's Best Jumbo', respectively. Moreover, the 'Hale's Best Jumbo' cultivar presented higher soluble solids contents than the 'Canary' melon, with an increase of 11.26% (0.76 ° Brix). Conclusion: The use of soil cover and additional fertilization (organic or foliar) in the cultivation of melon provides an increase in size, mass and productivity, while soil cover increases the soluble solids content in fruits.

scholarly journals Digestate is equal or a better alternative to mineral fertilization of kohlrabi

2012 ◽  
Vol 60 (1) ◽  
pp. 91-96 ◽  
Author(s):  
Tomáš Lošák ◽  
Ludmila Musilová ◽  
Andrea Zatloukalová ◽  
Monika Szostková ◽  
Jaroslav Hlušek ◽  
...  
Keyword(s):  
Quality Parameters ◽  
Nitrate Content ◽  
Mineral Fertilizers ◽  
Mineral Fertilization ◽  
Fresh Matter ◽  
Urea Treatment ◽  
Yield And Quality ◽  
Triple Super Phosphate ◽  
N Dose ◽  
One Year

In a one-year vegetation pot experiment, we compared the effect of digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Segura F1. Four treatments were used in the trial: 1) untreated control, 2) urea, 3) digestate, 4) urea, triple super phosphate, KCl, MgSO4. The N dose was the same in treatments 2–4, 1.5 g N/pot. In treatment 4 the P, K and Mg doses corresponded to those supplied in the digestate treatment (3). The weight of single kohlrabi bulbs in the unfertilised control was significantly lower (36.2%) than in the urea treatment (100%) and the other fertilised treatments. After application of digestate (treatment 3) and mineral fertilisers (treatment 4), the weight of single bulbs significantly increased by 36.2 and 33.6%, respectively, compared with the urea treatment (2). The content of ascorbic acid did not differ between the fertilised treatments (282–301 mg/kg), but was significantly lower than in the unfertilised control (334 mg/kg). There were significant differences between all fertilised treatments (2, 3, 4) in bulb nitrate content (745, 187, 462 mg NO3−/kg fresh matter, respectively). After digestate application the content decreased significantly, to 187 mg NO3−/kg fresh matter. The soil Nmin content after harvest varied between 4.19–5.79 mg/kg in all fertilised treatments and the N-NH4+ form prevailed over N-NO3− only in the digestate treatment (3.45/2.34 mg/kg). We recommend the use of digestate to kohlrabi as it results in comparable or better yield and qualitative parameters of kohlrabi compared with mineral fertilizers.

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