Effects of pruning on flowering, yield and fruit quality in mango (Mangifera indica)

2005 ◽  
Vol 45 (10) ◽  
pp. 1325 ◽  
Author(s):  
T. Yeshitela ◽  
P. J. Robbertse ◽  
P. J. C. Stassen
Keyword(s):  
South Africa ◽  
Adverse Effects ◽  
Fruit Quality ◽  
Fruit Set ◽  
Mangifera Indica ◽  
The Other ◽  
Soluble Solids ◽  
Northern Province ◽  
Full Bloom ◽  
Early Maturing

The effects of 7 pruning treatments were studied in 2 mango cultivars (‘Keitt’ and ‘Tommy Atkins’) in the Hoedspruit region of the Northern Province of South Africa. Trees that received panicle pruning (during full bloom) treatment at the point of attachment were observed to be induced for synchronised re-flowering, and also attained early fruit set and more fruit per panicle than the other panicle pruning treatments. Trees on which renewal pruning (early in the season when fruits were on the tree) as well as postharvest pruning treatments were applied, have been observed for development of adequate number of productive inflorescences per season in an early-maturing cultivar, Tommy Atkins. Postharvest pruning treatments also resulted in significant increase of postharvest vegetative growth in both cultivars. Promising improvement in yield could be expected after the second season from panicle pruning in Tommy Atkins. The fruit quality, especially with regard to total soluble solids (TSS), was also greatly improved due to the applications of renewal and postharvest pruning treatments. Inflorescence removal together with apical whorl of leaves subtending the inflorescence had adverse effects for the various parameters studied in both cultivars.

scholarly journals GA3—INDUCED FRUIT SET OF RABBITEYE BLUEBERRY

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 689c-689
Author(s):  
Raguel Cano—M ◽  
Rebecca L. Darnell
Keyword(s):  
Fruit Quality ◽  
Fruit Development ◽  
Fruit Set ◽  
Total Yield ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Full Bloom ◽  
Development Period

The effects of different GA3 concentrations and application times on fruit set, fruit development period, and fruit quality in rabbiteye blueberry (Vaccinium ashei Reade) were studied. Flower clusters were sprayed with 100 or 250 ppm GA3 at 90% full bloom and again 7 days later, or with 125 ppm GA3 at 90% full bloom and again 7, 21, and 42 days later, under greenhouse conditions. Fruit set was monitored every 10 days and fruit weight, fruit development period, soluble solids, and titratable acidity were measured at harvest. Fruit set in GA3 treatments averaged 69 to 76% compared to an average of 43% for the pollinated control. Weight of GA3 treated berries averaged 1.2, g while that of pollinated berries averaged 2.0 g. However, calculated total yield was greater for the GA3 treatments compared to the pollinated control, averaging 244 and 206 g/treatment, respectively. GA3 increased the fruit development period by 2 to 11 days, depending on the treatment. Soluble solids and titratable acidity were not affected by any treatment.

scholarly journals 186 INFLUENCE OF HYDROGEN CYANAMIDE AND WILTH IN ON BLOSSOM THINNING OF APPLE AND PLUM

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 455f-455
Author(s):  
Esmaeil Fallahi ◽  
Brenda R. Simons ◽  
Max W. Williams
Keyword(s):  
Fruit Quality ◽  
Fruit Set ◽  
Fruit Size ◽  
Soluble Solids ◽  
Full Bloom ◽  
Mature Trees ◽  
Hydrogen Cyanamide ◽  
Fruit Thinning ◽  
Yield And Quality

Effects of hydrogen cyanamide and Wilthin on blossom thinning and the consequences of thinning on fruit set, yield and fruit quality of `Rome Beauty' was studied. A full bloom application of hydrogen cyanamide at the rate of 0.25% (Dormex formulation) or 0.25% of Wilthin both followed by a fruit thinning by Sevin + NAA effectively thinned mature trees of `Rome Beauty' and had a similar effect on fruit set, yield and fruit quality. The effects of these two chemicals at these rates on several aspects of fruit set, yield and quality were similar to the effects of Elgetol. Hydrogen cyanamide, Elgetol and 0.25% Wilthin at full bloom resulted in a higher percentage of single fruit set, thus, less labor for hand thinning. Application of 0.37% Wilthin at 20% bloom or at full bloom resulted in larger fruit size, but induced fruit russetting. Soluble solids of fruit from trees with Elgetol, 0.37% Wilthin at 20% bloom or at full bloom were higher than fruit from other treatments. Hydrogen cyanamide at 0.50% resulted in a satisfactory level of blossom thinning in `Friar' plums.

scholarly journals Influence of chitosan coatings with citric essential oil on the shelf-life of minimally processed mango (Mangifera indica L.)

2015 ◽  
Vol 68 (2) ◽  
pp. 7679-7688
Author(s):  
Fabián Rico Rodríguez ◽  
Carolina Gutiérrez Cortés ◽  
Consuelo Díaz Moreno
Keyword(s):  
Weight Loss ◽  
Ascorbic Acid ◽  
Shelf Life ◽  
Mangifera Indica ◽  
The Other ◽  
Soluble Solids ◽  
Total Acidity ◽  
Minimally Processed ◽  
Color Changes ◽  
Sensory Acceptance

Demand for minimally processed fruits have increased due to their nutritional value and an increasing change in consumption habits. Physicochemical, microbiological, structural and sensory changes were determined in minimally processed mangoes (MPM) with chitosan (CH) edible coatings and lemon and orange essential oils (EOL). The MPM was first dipped in citric acid and a texturizing solution and then dipped in CH and lemon or orange EOL coatings. Weight loss, sensory acceptance, total soluble solids, total acidity, ascorbic acid, color changes, firmness and elasticity, and microbiological changes were quantified for 11 days of refrigerated storage. The CH and lemon EOL coating had more acceptance than the other treatments. No differences were found (p>0.05) for weight loss, total acidity, ascorbic acid, firmness or elasticity. There was a high amount of total phenols due to the EOL composition, as well as a high antioxidant capacity in the early days of storage. This characteristic decreased in the final days of the study. There was a decrease in the microbial charge for the lemon EOL treatment, as compared to the other samples. The CH and lemon EOL coating helped to maintain the shelf-life of the MPM for 11 days of storage without affecting the sensory acceptance. The CH and Orange EOL coating did not have an effect on the MPM physicochemical attributes; however, the sensory acceptance was negatively affected with off-flavors conferred to the MPM.

scholarly journals EARLY SPRING APPLICATION OF AMINOETHOXYVINILGLYCINE (AVG) INCREASES FRUIT SET AND YIELD OF ‘ROCHA’ PEARS

2017 ◽  
Vol 39 (4) ◽  
Author(s):  
MATEUS DA SILVEIRA PASA ◽  
BRUNO CARRA ◽  
CARINA PEREIRA DA SILVA ◽  
MARLISE NARA CIOTTA ◽  
ALBERTO FONTANELLA BRIGHENTI ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Fruit Set ◽  
Block Design ◽  
Quality Attributes ◽  
Fruit Weight ◽  
Early Spring ◽  
Full Bloom ◽  
Growing Seasons ◽  
Randomized Block Design ◽  
Return Bloom

ABSTRACT The low fruit set is one of the main factors leading to poor yield of pear orchards in Brazil. Ethylene is associated with abscission of flowers and fruitlets. Then, the application of ethylene synthesis inhibitors, such as AVG, is a potential tool to increase fruit set of pears. The objective of this study was to evaluate the effect of AVG, sprayed at different rates and timings, on fruit set, yield and fruit quality of ‘Rocha’ pear. The study was performed in a commercial orchard located in the municipality of São Joaquim, SC, during the growing seasons of 2014/2015 and 2015/2016. Plant material consisted of ‘Rocha’ pear trees grafted on quince rootstock ‘BA29’. AVG was tested at different rates (60 mg L-1 and 80 mg L-1) and timings [full bloom, one week after full bloom (WAFB), and two WAFB), either alone or in combination. The experiment was arranged in a randomized block design, with at least five single-tree replications. The fruit set, number of fruit per tree, yield, estimated yield, fruit weight, return bloom, and fruit quality attributes were assessed. Fruit set and yield were consistently increased by single applications of AVG at 60 and 80 mg L-1 at both one and two weeks after full bloom, without negatively affecting fruit quality attributes and return bloom.

scholarly journals The contemporary geomorphology of the Letaba River in the Kruger National Park

Koedoe ◽  
2001 ◽  
Vol 44 (1) ◽  
Author(s):  
B.P. Moon ◽  
G.L. Heritage
Keyword(s):  
South Africa ◽  
Flow Regime ◽  
Field Observation ◽  
National Park ◽  
Kruger National Park ◽  
The Other ◽  
Northern Province ◽  
Sediment Delivery ◽  
North East ◽  
Olifants River

The Letaba River drains part of Northern Province in north-east South Africa. Its catchment has been modified significantly by human activity which has affected the flow regime; it experiences only ephemeral flows through the Kruger National Park to its confluence with the Olifants River. Although the Letaba is similar to the other rivers in the Kruger National Park in that it displays some bedrock influenced channel features, increased sediment delivery from the degraded catchment upstream has resulted in extensive alluviation within the channel. Sections of channel flowing over bedrock with no sediment covering are rare, and the river comprises a series of channel types: mixed anastomosing, alluvial braided, mixed pool-rapid and alluvial single thread. Each is characterised by a different combination of morphological units which relate to the degree of alluviation in the channel. These channel types are described in detail and inferences are made concerning their formation and maintenance from field observation and measurement.

Note: The effect of Ethephon on the colour, composition and quality of mango (Mangifera indica, cv Kent) / Nota: Efecto del Ethephon sobre el color, la composición y la calidad del mango (Mangifera indica cv Kent)

1998 ◽  
Vol 4 (3) ◽  
pp. 199-205 ◽  
Author(s):  
A.R. Centurión Yah ◽  
S.A. González Novelo ◽  
J.A. Tamayo Cortés ◽  
J.J. Argumedo ◽  
E. Sauri Duch
Keyword(s):  
Chemical Composition ◽  
Vitamin C ◽  
Reducing Sugars ◽  
Mangifera Indica ◽  
The Other ◽  
Soluble Solids ◽  
Ripe Fruit ◽  
Yellow Colour ◽  
General Acceptance

Mango cv Kent, as grown on the Yucatan Peninsula, despite its satisfactory ripening, pleasant flavour, correct pulp colour and general acceptance, shows a skin without the characteristic red- yellow colour of the regular ripe fruit; it remains green and this makes it slightly unattractive to the consumer. On the other hand, ethylene and some other components such as Ethephon, have been used to homogenize the ripening in many fruits and to improve its colour. This work shows the results of the effect of nine different treatments with Ethephon on the colour, composition and quality of mango cv Kent. Fruit was treated by immersion in solutions of Ethephon at three different concentrations (500, 1500 and 2000 ppm) and for three different lengths of times (3, 6 and 9 min). The colour improvement depended upon the concentration and time of the treatment with Ethephon. In general, it was found that treatment with Ethephon had a significantly posi tive effect on the colour of the mango skin, as it caused the degradation of chlorophyll, which gave the appearance of the characteristic yellow and red colours to 100% of the fruit treated with 2500 ppm. Treatments influenced significantly the chemical composition of the pulp, particularly the concentration of total soluble solids, reducing sugars, carotenoids, vitamin C and acidity. The best sensorial acceptance was obtained from treatments with 1500 ppm.

Perception of Illness among Secondary School Pupils in South Africa: Malaria, Tuberculosis, HIV/AIDS, and Alcoholism

2001 ◽  
Vol 88 (3) ◽  
pp. 847-848 ◽  
Author(s):  
Karl Peltzer
Keyword(s):  
South Africa ◽  
High School ◽  
High School Students ◽  
Secondary School ◽  
Secondary Schools ◽  
The Other ◽  
Northern Province ◽  
School Students ◽  
Gradual Onset ◽  
Hiv Aids

The study investigated beliefs of 121 high school students in Grade 11 about people who are ill with malaria, tuberculosis, HIV/AIDS, and alcoholism. The sample of Black pupils were chosen at random from two rural secondary schools in one region in the Northern Province of South Africa. Analysis indicated that HIV/AIDS was clearly distinguished from the other three illnesses by being seen as the least easily cured, having the most gradual onset, being the most contagious, showing the least look of illness, and the patients being likely those most blamed for their illness.

scholarly journals Synthetic Cytokinin-1-(2=chloro=4=pyridyl)-3-phenylurea (CPPU)-Promotes Fruit Set and Induces Parthenocarpy in Watermelon

1995 ◽  
Vol 120 (6) ◽  
pp. 997-1000 ◽  
Author(s):  
Yasuyoshi Hayata ◽  
Yoshiyuki Niimi ◽  
Naoto Iwasaki
Keyword(s):  
Fruit Quality ◽  
Fruit Set ◽  
Fruit Growth ◽  
Soluble Solids ◽  
Parthenocarpic Fruit ◽  
Soluble Solids Content ◽  
Control Fruit ◽  
Seedless Fruit ◽  
Solids Content

Applying a 200 ppm solution of CPPU to pollinated ovaries of watermelon (Citrullus lunatus Matsum) at anthesis increased fruit set from 26.9% (control) to 95%. Applying CPPU solutions to nonpollinated ovaries at anthesis induced parthenocarpy, yielding 65% and 89.5% fruit set, respectively with 20 and 200 ppm applications. However, 64% of the 20 ppm CPPU-treated parthenocarpic fruit stopped growth 10 days after treatment. Growth of CPPU-treated, pollinated, and nonpollinated fruit increased significantly compared with growth of control fruit during the first 10 days after treatment, but, except for the 20 ppm CPPU parthenocarpic fruit, growth subsequently slowed, resulting in fruit equal in size to the control by harvest. CPPU application did not affect soluble solids content of pollinated fruit, but reduced content of parthenocarpic fruit treated with 20 ppm. Fructose content was generally higher than glucose and sucrose at harvest. However, in pollinated fruit treated with 20 ppm CPPU, sucrose levels were higher than glucose and fructose. These results suggest that CPPU is practical for promoting fruit set and seedless fruit without adversely affecting fruit quality and development.

scholarly journals Growth and yield of pomato under the Syrian coastal mountains conditions

2021 ◽  
Vol 13 (4) ◽  
pp. 382-388
Author(s):  
Alaa Suhiel Ibrahim
Keyword(s):  
Fruit Set ◽  
Tomato Fruit ◽  
Shape Index ◽  
The Other ◽  
Soluble Solids ◽  
Growth And Yield ◽  
Potato Tubers ◽  
Average Yield ◽  
Tomato Plants ◽  
Significant Superiority

Abstract. The world has always been striving to increase and intensify agricultural production, and there are several attempts to acheive that, such as grafting tomato on potato to obtain two crops from one plant. This investigation was conducted during 2020 in open field in Nahl village, Baniyas, Tartous Governorate, Syria. The vegetative and generative growth and yield have been studied for pomato (grafted tomato on potato) and compared to each tomato and potato separately. Tomato plants were significantly superior in plant height to pomato plants after 23 days of planting until the end of the experiment. On the other hand, there were significant differences between tomato plants and pomato plants in the leaf area after 23, 51 and 65 days of planting. Also, tomato plants significantly outperformed pomato plants in the number of flowers and fruits per plant and the tomato fruit set percent. Anyway, tomato plants were significantly superior in the average yield of tomato fruits per plant (1657 g.plant-1) to pomato plants (185 g.plant-1), while there were insignificant differences in the average yield of potato tubers per plant between pomato which failed to produce tubers and potato (48.25 g.plant-1). Studying the tomato fruit fresh weight showed a significant superiority of tomato plants (54.37 g.fruit-1) to pomato plants (35.97 g.fruit-1), while there were insignificant differences in the other physical (tomato fruit height, diameter and shape index) and chemical (tomato fruit content of total acids, total soluble solids and dry matter, %) properties.

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