scholarly journals Nitrogen and boron fertilization in cauliflower

2021 ◽  
Vol 14 (2) ◽  
pp. 22
Author(s):  
J. A. Bonetti ◽  
S. O. Fernandes ◽  
M. R. Zanuzo ◽  
A. Lange ◽  
R. A. F. Machado
Keyword(s):  
Development Process ◽  
Total Yield ◽  
Calcium Nitrate ◽  
Stem Diameter ◽  
Yield And Quality ◽  
Quality Aspects ◽  
Commercial Yield ◽  
Set Up ◽  
Boron Fertilization ◽  
Plot Design

Nitrogen and boron participate concurrently in the growth and development process of plants by changing   cell division processes. Therefore, the aim of this study was to evaluate the influence of sources and doses of nitrogen, associated with boron doses and sulfur on the yield and quality aspects of Verona CMS cauliflower. The experimental design was set up under split plot design in randomized blocks, with 3 replicates. The treatments in the plot were sources of ammonium sulphate (NH4)2SO4) and calcium nitrate (Ca(NO3)2) x doses of nitrogen, being 125, 150, 175 and 200 kg ha-1 on topdressing system and in the subplot doses of boron (0, 2, 4 and 6 kg ha-1). The fresh curd mass, curd and stem diameter, total and commercial yield, besides the contents of nitrogen, boron and sulfur in the leaf and curd, were evaluated. The sources and doses of nitrogen and the doses of boron did not influence the fresh curd mass, stem diameter and the total yield of 'Verona CMS' cauliflower. Enhancing doses of Ca(NO3)2 increased curd diameter, however in combination with boron doses there was antagonism effect on curd development. The contents of nitrogen and boron in the leaf were influenced by the fertilization of nitrogen and boron, respectively, when the calcium nitrate source was used.

scholarly journals NITROGEN SOURCE AND TIMING EFFECTS ON YIELD AND QUALITY OF WATERMELON

HortScience ◽  
1993 ◽  
Vol 28 (4) ◽  
pp. 268C-268
Author(s):  
J.T. Garrett
Keyword(s):  
Ammonium Nitrate ◽  
Citrullus Lanatus ◽  
Total Yield ◽  
Calcium Nitrate ◽  
Potassium Nitrate ◽  
Soluble Solids ◽  
Yield And Quality ◽  
Timing Effects ◽  
Different Sources

Nitrogen from five different sources applied preplant and sidedress to field grown watermelon (Citrullus lanatus Thunb. cv. Prince Charles) did not affect total yield but more melons were harvested earlier when potassium nitrate or calcium nitrate was applied frequently in small amounts. Conversely, two sidedressings of ammonium nitrate or soda/potash applied at 30-day intervals outperformed other application frequencies for these sources. Timing of application had little effect on earliness when sodium nitrate was the source. Improvement in percent stand was documented where total nitrogen fertilizer was applied frequently in small amounts versus infrequent larger amounts. Stand count improvements approached 30 percent for ammonium nitrate and potassium nitrate when amounts were split over five applications versus the single application. Soluble solids and flesh color were not affected by treatments used in this study.

scholarly journals Regulating yield and wine quality of minimal prunning systems through the application of gibberellic acid

OENO One ◽  
2006 ◽  
Vol 40 (3) ◽  
pp. 151
Author(s):  
Karsten M. Weyand ◽  
Hans Reiner Schultz
Keyword(s):  
Gibberellic Acid ◽  
Total Yield ◽  
Titratable Acidity ◽  
Wine Quality ◽  
Berry Weight ◽  
Berry Size ◽  
Quality Aspects ◽  
Shoot Number ◽  
Commercial Yield ◽  
Sugar Levels

<p style="text-align: justify;">The use of gibberellic acid to increase berry size and to loosen up bunches in the production of seedless table grape varieties has a long history. The use of gibberellic acid on wine grapes, however, is very limited, mainly because some varieties can show substantial losses in bud fertility and thus in commercial yield. We tried to exploit the feature of decreases in bud fertility as a response to gibberellic acid applications (in the form of GA3) to regulate yield and quality aspects of minimally pruned (MP) White Riesling grapevines where other thinning methods have failed. Single applications of 50 mg L-1 GA3 at 500 L ha-1 were used during full bloom in each year from 2002-2004 (MP GA3-02/03/04) in one MP treatment, while the second MP treatment received no GA3 in 2003 (MP GA3-02/04). Treatments were compared with untreated MP vines and with a standard pruned, vertically shoot positioned system (VSP). GA3 applications reduced inflorescence number by about 30-50% the year following treatment, while shoot number remained unchanged. GA3 treated MP vines responded to this type of « thinning » by a 10-28 % increase in berry weight. Total yield of MP vines was reduced by 26-49% the year after first time application approaching VSP yield. Yield of the continuously treated vines (MP GA3-02/03/04) remained comparable to pruned VSP vines up to now (harvest 2005) (about 9-13 tons per ha). Discontinuing the GA3 treatment for one year caused yield to re-approach the one of untreated MP vines the next year. Despite of the increase in berry weight, bunch structure remained less compact as compared to VSP fruit. Sugar levels at harvest of vines treated with GA3 the previous year were similar to sugar levels of VSP vines and superior to untreated MP vines. We found no treatment effect on glycosyl-glucose (bound secondary metabolites, GG) concentration but a slight increase in phenols and titratable acidity the year after GA3 treatment. Sensory evaluation of the resulting wines revealed no or only minimal differences with a slight preference for the least yielding VSP and MP GA3-02/03/04 wines. The outlined strategy seems promising for the production of quality fruit in a highly economic viticultural system.</p>

scholarly journals Comparison of Yield and Quality of Red Beet Roots Cultivated Using Conventional, Integrated and Organic Method

2013 ◽  
Vol 21 (1) ◽  
pp. 107-114 ◽  
Author(s):  
Anna A. Szopińska ◽  
Maria Gawęda
Keyword(s):  
Chemical Constituents ◽  
Total Yield ◽  
Dry Weight ◽  
Root Weight ◽  
Yield And Quality ◽  
Red Beet ◽  
Commercial Yield ◽  
Nitrates Content ◽  
Two Parameters

Abstract The experiment on different means of cultivation of red beet cv. ‘Regulski Cylinder’ was conducted in the years 2006-2009, using conventional, integrated, and organic methods. The greatest impact on total and commercial yield, the average root weight, dry weight and chemical constituents’ content in the roots had the season. In the years 2006 and 2008, the highest total and marketable yields of beet roots were obtained by organic method, but in 2009 these parameters were the lowest in organically produced plants. Total yield was correlated with mean root weight. In the years 2006 and 2008, betanine content was the lowest in organically produced roots while in the year 2009 it was the highest. The low yield of marketable roots and the low nitrates’ content were the only two parameters, which distinguished organically produced red beet roots throughout the years of experiment.

scholarly journals Effects of Hydroponics Systems on Growth, Yield and Quality of Zucchini (Cucurbita pepo L.)

2019 ◽  
Vol 8 (2) ◽  
pp. 62
Author(s):  
Lungile T. Shongwe ◽  
Michael T. Masarirambi ◽  
Tajudeen O. Oseni ◽  
Paul K. Wahome ◽  
Kwanele A. Nxumalo ◽  
...  
Keyword(s):  
Total Yield ◽  
Growth Yield ◽  
Nutritional Content ◽  
Yield And Quality ◽  
Nutrient Film Technique ◽  
Number Of Leaves ◽  
The University ◽  
Department Faculty ◽  
Plot Design

There is dearth of information pertaining to hydroponics production of zucchini in the Kingdom of Eswatini. The objective of this study was to determine the effects of hydroponics systems on growth, yield and nutritional content of zucchini. The research was conducted in three greenhouses of the Horticulture Department, Faculty of Agriculture, Luyengo Campus at the University of Eswatini between July and October 2018. The experiment was laid out in a split-plot design replicated four times. Three hydroponics systems were used as the main plots, i.e. elevated tray, ground lay bed and Nutrient Film Technique (NFT) systems. The sub-plots were allocated to the three varieties, i.e., Amanda, Hygreen and Terminator. The zucchini grown in elevated tray hydroponics system had the highest yield in all the varieties compared to the other hydroponics systems. The results showed that there were significant differences in the growth, yield and nutritional content of zucchini cultivars grown in the different hydroponics systems. The tallest plants (26.1cm) were obtained in cultivar Terminator grown in the elevated tray system and the highest number of leaves (15) was obtained in cultivar Terminator grown in the elevated tray system. Cultivar Terminator grown in the elevated tray system had the highest total yield (15.8 tons/ha) while Hygreen plants produced in the NFT system recorded the lowest total yield (1.04 tons/ha). There were no significant differences in the iron content of zucchini among the cultivars grown in the different hydroponics systems. The results of this study revealed that different zucchini cultivars responded differently when grown in the different hydroponics systems. Therefore based on the results of this study it is recommended that Terminator zucchini cultivar can be produced in the elevated tray hydroponics system.

scholarly journals The Effects of Combinations of Three Scions and Three Rootstocks on Yield and Quality of Iranian Pistachio Nuts

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 634e-634
Author(s):  
B. Panahi ◽  
A. Sheibani ◽  
W. E. Peat
Keyword(s):  
Statistical Analysis ◽  
Total Yield ◽  
Fruit Size ◽  
Growth Yield ◽  
Yield And Quality ◽  
Pistachio Nuts ◽  
Graft Area ◽  
Almost All ◽  
Plot Design

Rootstocks in various species have been shown to significantly influence vigor of scion growth, yield, fruit size, maturity, quality, and other phenomena. This research studied the effects of combinations of three scions and three rootstocks of Iranian pistachio on characteristics of fruit. A split-plot design was laid out at Rafsanjan/Iran in 1993 and results for a period of 2 years from 1994 to 1995 are presented. Diameter of trunk 5 cm above and below the graft area, weight of nuts with hull, weight of nuts without hull, weight of in-shell nuts, weight of blank, percent of shell splitting and total yield weight were measured. Almost all the treatment differences in the experiment were associated with rootstock effects and not scions. Statistical analysis indicated that different scions had no effect on any of the measured characteristics except the diameter of trunk 5 cm below the graft area. Rootstocks, however, had large and significant effects on all the characters except percent shell splitting. Interactions between scion and rootstock were important such that the combination of the scion `Kalehghochi' with the rootstock `Ahli' gave substantially higher yields than any other combination.

Nutritional, Yield, and Quality Responses of Apple, Pear, and Cherry to Calcium Nitrate Application

2021 ◽  
pp. 1-17
Author(s):  
Babak Motesharezadeh ◽  
Qifu Ma ◽  
Ali Reza Tabibi ◽  
Reza Fatemi ◽  
Farzaneh Bekhradi
Keyword(s):  
Calcium Nitrate ◽  
Yield And Quality

scholarly journals Attenuation of Wave Energy Due to Mangrove Vegetation off Mumbai, India

Energies ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 4286 ◽  
Author(s):  
Samiksha S. V. ◽  
P. Vethamony ◽  
Prasad K. Bhaskaran ◽  
P. Pednekar ◽  
M. Jishad ◽  
...  
Keyword(s):  
Climate Change ◽  
Drag Coefficient ◽  
Wave Energy ◽  
Measured Data ◽  
Stem Diameter ◽  
Coastal Hazards ◽  
Sensitivity Analyses ◽  
Vegetation Density ◽  
Mangrove Vegetation ◽  
Set Up

Coastal regions of India are prone to sea level rise, cyclones, storm surges, and human-induced activities, resulting in flood, erosion, and inundation, and some of these impacts could be attributed to climate change. Mangroves play a very protective role against some of these coastal hazards. The primary aim of the study was to estimate wave energy attenuation by mangrove vegetation using modeling, and to validate the model results with measurements conducted off Mumbai coast, where a mangrove forest is present. Wave measurements were carried out from 5–8 August 2015 at three locations in a transect normal to the coast using surface-mounted pressure-level sensors in spring tide conditions. The measured data presented wave height attenuation of the order of 52%. Model set-up and sensitivity analyses were conducted to understand the model performance with respect to vegetation parameters. It was observed that wave attenuation increases with an increase in drag coefficient, vegetation density, and stem diameter. For a typical set-up in the Mumbai coastal region having a vegetation density of 0.175 per m2, stem diameter of 0.3 m, and drag coefficient varying from 0.4 to 1.5, the model reproduced attenuation ranging from 49% to 55%, which matches reasonably well with the measured data. Spectral analysis performed for the cases with and without vegetation very clearly portrays energy dissipation in the vegetation area. This study also highlights the importance of climate change and mangrove vegetation.

scholarly journals Developing and Testing a Middle-Range Theory of the Well-Being Supportive Physical Environment of Home-Dwelling Elderly

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Satu Elo ◽  
Maria Kääriäinen ◽  
Arja Isola ◽  
Helvi Kyngäs
Keyword(s):  
Physical Environment ◽  
Development Process ◽  
Theory Development ◽  
Well Being ◽  
Middle Range Theory ◽  
Hypothetical Model ◽  
Middle Range ◽  
Range Theory ◽  
Set Up ◽  
Deductive Theory

The aim is to describe the development of a middle-range theory by using an inductive-deductive approach. A theory of well-being supporting physical environment of home-dwelling elderly is used as an example. The inductive-deductive theory development process is described through four different phases: (1) the creations of concepts were described inductively through concept synthesis, (2) relationships between the concepts were examined to set up a hypothetical model, (3) hypotheses were set up to verify the concepts and to test hypothetical models, and (4) the verification and presentation of the theory.

scholarly journals Associations between morphological and agronomic characteristics in garlic crop

2019 ◽  
Vol 37 (2) ◽  
pp. 204-209
Author(s):  
Valter C de Andrade Júnior ◽  
Amanda G Guimarães ◽  
Tiago D Firme ◽  
Aline Aparecida A Costa ◽  
Márcia Regina da Costa ◽  
...  
Keyword(s):  
Path Analysis ◽  
Total Yield ◽  
Marketable Yield ◽  
Breeding Programs ◽  
Phenotypic Correlations ◽  
Genotypic And Phenotypic Correlations ◽  
Number Of Leaves ◽  
Commercial Yield ◽  
Selection Of ◽  
Bulb Yield

ABSTRACT Correlations and path analysis between characteristics can aid the selection of important attributes in breeding programs. Thus, the objective of this work was to perform genotypic, phenotypic correlations and path analysis under commercial yield of garlic bulbs, depending on morphological and agronomic variables. The experiment was carried out in 2017 at the Universidade Federal dos Vales do Jequitinhonha e Mucuri and Universidade Federal de Lavras, using ten garlic genotypes, eight trials and two commercial cultivars, Caçador and Jonas. We evaluated: plant height; number of leaves, total bulb number; total bulb mass, total bulb yield, marketable bulb yield and number of cloves per bulb. The genotypic and phenotypic correlations were positive and significant between marketable yield of bulbs with bulb mass, total yield and number of cloves per bulb, indicating that selection based on these characteristics will help increase the yield of garlic. However, only the number of cloves per bulb had a direct effect and a relevant indirect effect on the marketable yield of garlic.

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