Effect of Foliar Application of Cytokinin, Active Dry Yeast and Potassium on Fruit Size, Yield, Fruit Quality and Leaf Mineral Composition of Valencia Orange Trees

2016 ◽  
Vol 43 (2) ◽  
pp. 389-414
Keyword(s):  
Mineral Composition ◽  
Fruit Quality ◽  
Foliar Application ◽  
Fruit Size ◽  
Valencia Orange ◽  
Active Dry Yeast ◽  
Orange Trees

Effect of time of harvest on alternate cropping yields and fruit quality of Valencia orange trees

1978 ◽  
Vol 18 (92) ◽  
pp. 461 ◽  
Author(s):  
PT Gallasch
Keyword(s):  
Fruit Quality ◽  
South Australia ◽  
Mature Fruit ◽  
Late Season ◽  
Valencia Orange ◽  
The Common ◽  
Orange Trees ◽  
Early Harvest ◽  
Time Of Harvest

At Loxton, South Australia, early harvest of heavy, and late harvest of light, Valencia orange crops was compared with the common practice: early harvest of light and late harvest of heavy crops. These treatments were compared with two years of early, mid- or late season harvests. Early harvest of heavy and late harvest of light crops changed the 3.1:1.0 alternate cropping cycle to 1.1:10 and increased the light crop by 101 per cent compared with the common district practice which gave a 3.2 : 10 cycle. Consistent early and mid-season harvests reduced the alternate cropping ratio to 1.3 : 1.0 and 1.4 : 1.0 respectively, produced 14 per cent more fruit than the common district practice and avoided harvesting the light crop late, when fruit quality is poor. Mature fruit weights from trees consistently harvested late were 27 per cent lower than those trees harvested mid-season.

Improving fruit size and packout of Late Valencia oranges with ethephon fruit-thinning sprays

1992 ◽  
Vol 32 (6) ◽  
pp. 753 ◽  
Author(s):  
RJ Hutton
Keyword(s):  
Fruit Quality ◽  
Fruit Size ◽  
High Volume ◽  
Cropping Pattern ◽  
Alternate Bearing ◽  
Fruit Thinning ◽  
Unaffected Control ◽  
Marketable Fruit ◽  
Orange Trees ◽  
Spray Treatment

This study set out to establish concentrations of ethephon sprays that could reliably thin alternate cropping orange trees in a heavy set year to improve fruit quality for fresh marketing. An optimum concentration of ethephon as a thinning agent was identified for the practical control of alternate cropping in Late Valencia oranges. A single, high volume spray of ethephon (as Ethrel, 42-60 mL/100 L water), applied in a heavy-set year at 6-8 weeks post bloom when fruitlet size was 10-15 mm diameter, induced a 15-20% reduction in fruit number. This resulted in significantly improved fruit size and marketable outturn with negligible yield penalty. In the 2 successive harvests following spray treatment, the cropping pattern remained uniform and a 14% improvement in packout (marketable fruit size <100 counts per carton) was maintained. Internal fruit quality was unaffected. Control of alternate bearing was carried forward for at least 2 seasons with relatively stable yields following a single spray treatment.

scholarly journals Morphological Characteristics of Stone Cells in Fruit of Pears

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 829E-830 ◽  
Author(s):  
Wol-Soo Kim* ◽  
Jin-Ho Choi
Keyword(s):  
Electron Microscope ◽  
Fruit Quality ◽  
Foliar Application ◽  
Fruit Size ◽  
Morphological Characteristics ◽  
Optical Microscope ◽  
Formative Period ◽  
Texture Profile ◽  
Stone Cell ◽  
Effects Of Drought

The stone cells events in the process of lignifications of plant tissues in flesh of Asian pear have been growing as a depressing factor of fruit quality. Therefore, these studies were carried out to search the effect of stone cells on fruit quality, to investigate the anatomical characteristics, such as formative period and distribution of stone cell, to seek forming causes, and to determine the effects of drought stress and calcium foliar application on the formation of stone cell. Fruit quality as contents of the stone cells, such as texture profile, reducing sugars, firmness, and fruit size, were determined. During the growing season of 2002 and 2003, samples for anatomical investigations were taken periodically in Pyrus pyriforia cv. Niitaka, Pyrus communis cv. Bartlett and Pyrus ussiriansis cv. Yari. The morphology of stone cell in the fruit flesh was observed by using optical microscope, scanning electron microscope (SEM) and transmission electron microscope (TEM).

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