scholarly journals The effect of rootstocks on the fruit quality parameters of apple (Malus domestica Borkh.)

2005 ◽  
pp. 39-43
Author(s):  
József Racskó ◽  
Miklós Soltész ◽  
Lejla Budai ◽  
Zoltán Szabó ◽  
Ervin Farkas ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Malus Domestica ◽  
Quality Parameters ◽  
Fruit Weight ◽  
Skin Colour ◽  
Malus Domestica Borkh ◽  
Research Results ◽  
Similar Tendency

The authors studied the effect of rootstocks with different growing vigour on fruit quality of different cultivars. Research results shows that best fruit diamter and fruit weight of all cultivars are for M9 rootstock. Similar tendency was found in skin colour, but in the case of Granny Smith, MM106 rootstock is more favourable because the green skin colour is necessary for the consumers’ acceptance. Seedling rootstok has some unfavourable effects on fruit quality, thus its usage is not expedient.

scholarly journals Influence of Ascophyllum nodosum extract, homobrassinolide and triacontanol on fruit retention, yield and quality of mango

2021 ◽  
Vol 42 (4) ◽  
pp. 1085-1091
Author(s):  
A. Dash ◽  
◽  
D. Samant ◽  
D.K. Dash ◽  
S.N. Dash ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Foliar Application ◽  
Block Design ◽  
Ascophyllum Nodosum ◽  
Quality Parameters ◽  
Fruit Weight ◽  
Fruit Growth ◽  
Yield And Quality ◽  
Randomized Block Design

Aim: To evaluate the efficacy of foliar application of Ascophyllum nodosum extract, homobrassinolide, and triacontanol for improving fruit retention, yield, and quality in mango. Methodology: The experiment was laid out in a randomized block design with 10 treatments, comprising Ascophyllum nodosum extract (1000, 3000, and 5000 ppm), homobrassinolide (0.1, 0.3, and 0.5 ppm), triacontanol (1, 3, and 5 ppm), and water as control. Treatments were foliar sprayed at panicle initiation, pea, and marble stages of fruit growth. Observations were recorded on flowering, fruiting, yield, and fruit quality parameters. Results: All the treatments of Ascophyllum nodosum extract and triacontanol exhibited significant improvement in fruit retention, fruit weight, yield, and fruit quality parameters over control. However, 3000 and 5000 ppm Ascophyllum nodosum extract treatments outperformed all the treatments of triacontanol. Plants sprayed with 5000 ppm Ascophyllum nodosum extract recorded the maximum value for fruit retention (48.15, 36.74, 29.48, and 25.76% at 3, 6, 9, and 12 weeks after pea stage, respectively), number of fruits (133.25 per tree), fruit weight (188.84 g per fruit), and yield (25.16 kg per tree), whereas the lowest values were recorded under control. With respect to fruit quality, 3000 ppm ANE produced the fruits with the highest TSS (19.62 °B), whereas the highest TSS/acid ratio was recorded with 5000 ppm ANE (62.29) treatment. Interpretation: In mango, foliar application of Ascophyllum nodosum extract (3000-5000 ppm) thrice at panicle initiation, pea, and marble stages of fruit growth is effective for reducing fruit drop and enhancing quantum and quality of produce.

Fruit quality of ‘Fuji’ apple (Malus domestica Borkh.) strains

2007 ◽  
Vol 87 (4) ◽  
pp. 593-599 ◽  
Author(s):  
Robert Veberic ◽  
Peter Zadravec ◽  
Franci Stampar
Keyword(s):  
Fruit Quality ◽  
Malus Domestica ◽  
Malus Domestica Borkh ◽  
Fuji Apple

scholarly journals Effect of Potassium Levels on Productivity and Fruit Quality of Tomato (Lycopersicon esculentum L.)

2018 ◽  
Vol 5 (4) ◽  
pp. 102 ◽  
Author(s):  
Sofonias Hagos Woldemariam ◽  
Sewa Lal ◽  
Daniel Z. Zelelew ◽  
Mulugheta T. Solomon
Keyword(s):  
Specific Gravity ◽  
Fruit Quality ◽  
Dry Matter ◽  
High Energy ◽  
Quality Parameters ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Total Soluble Solids ◽  
Yield And Quality

Potassium has significant effect on quantity and quality of tomato yield because of its vital roles in photosynthesis, favoring high energy status and appropriate nutrient translocation and water uptake in plants. However, little is understood or it is being overlooked under Eritrean condition. Besides, poor soil fertility is among the major production constraints in Eritrea. The field experiment was therefore conducted to investigate the effect of potassium levels on productivity and fruit quality of tomato at Hamelmalo, Eritrea. The experiment was conducted in Randomized Complete Block Design with nine potassium levels (0, 50, 100, 150, 200, 250, 300, 350 and 400 kg K2O/ha) replicated thrice. Data was collected on yield and fruit quality parameters and they were subjected to one-way analysis of variance (1-way ANOVA). The results of this study revealed that potassium had significant effect in all yield and quality parameters studied. Fruit diameter, fruit weight per plant, total yield, total soluble solids, specific gravity and fruit dry matter content showed significant increase with an increase in potassium level from 0 to 150 kg K2O/ha and thereafter decreased while fruit moisture content was increased in the range of 150 - 400 kg K2O/ha. As a result, highest fruit weight (1.39 kg/plant), fruit yield (15.45 t/ha), total soluble solids (3.84 oBrix), specific gravity, (1.46) and fruit dry matter (5.68%) were recorded from 150 kg K2O/ha. Therefore it is recommended that potassium fertilizers should be used and balanced NPK fertilizers should be applied to improve yield and quality of tomato produced.

scholarly journals Summer Pruning Affects Yield and Improves Fruit Quality of `McIntosh' Apples

1990 ◽  
Vol 115 (3) ◽  
pp. 356-359 ◽  
Author(s):  
Wesley R. Autio ◽  
Duane W. Greene
Keyword(s):  
Fruit Quality ◽  
Malus Domestica ◽  
Total Yield ◽  
Fruit Weight ◽  
Net Returns ◽  
Yield And Quality ◽  
Time Required

The effects of summer pruning on the yield and quality of apples (Malus domestica Borkh.) from mature `Rogers McIntosh'/M.7 trees were assessed in 1986-88. Summer pruning from 1 July through 1 Sept. enhanced red coloring and increased the percentage of the crop graded U.S. Extra Fancy. Fruit weight was not altered by summer pruning. Total yield was reduced by summer pruning only in 1 year, however, in no year was the harvested yield reduced. The portion of the crop that was picked in the first harvest was increased by summer pruning. Dormant-pruning time was decreased by summer pruning, and the total time required for pruning was increased only 1 of the 2 years where it was measured. Summer pruning and daminozide treatment significantly increased the estimated net returns.

scholarly journals Ethephon as a Blossom and Fruitlet Thinner Affects Crop Load, Fruit Weight, Fruit Quality, and Return Bloom of ‘Summerred’ Apple (Malus ×domestica) Borkh.

HortScience ◽  
2011 ◽  
Vol 46 (3) ◽  
pp. 432-438 ◽  
Author(s):  
Mekjell Meland ◽  
Clive Kaiser
Keyword(s):  
Fruit Quality ◽  
Malus Domestica ◽  
Fruit Set ◽  
Quality Parameters ◽  
Fruit Weight ◽  
Cross Sectional ◽  
Biennial Bearing ◽  
Green Background ◽  
Soluble Solid ◽  
Return Bloom

‘Summerred’ apples (Malus domestica Borkh.) are highly susceptible to biennial bearing if not properly thinned. This results in erratic yields and also affects fruit quality adversely. Between 2003 and 2005, ‘Summered’/‘M9’ trees were treated with ethephon at concentrations of 250, 375, and 500 mg·L−1 when most king flowers opened (≈20% bloom) or at concentrations of 500, 625, and 750 mg·L−1 when the average fruitlet size was 10 mm in diameter. The experiment was conducted with 2.5-m height slender spindle trees sprayed to the point of runoff with a hand applicator only when temperatures exceeded 15 °C. Within 2 weeks after the second application, fruit set was reduced linearly with increasing concentrations of ethephon to less than one fruitlet per cluster at the highest concentrations used. Most thinning treatments reduced fruit set significantly compared with unthinned trees. Fruit numbers per tree decreased significantly with increasing ethephon concentrations, and the highest concentrations of ethephon applied during bloom or when the average fruitlet size was 10 mm in diameter resulted in overthinning. Yield results confirmed the fruit set response in which yield reductions were significant at the highest concentrations of ethephon (2.1 kg/tree) compared with hand-thinned trees (7.3 kg/tree) in 2005. All thinning treatments resulted in higher percentage of fruits larger than 60 mm diameter compared with unthinned control fruit. Thinning resulted in significantly higher soluble solid contents, and this was especially so for hand-thinned trees. Other fruit quality parameters like yellow–green background color did not show a clear response to thinning. Return bloom was, however, improved on all thinned trees. It is recommended that ethephon be applied at a rate of 375 mg·L−1 when king flowers open or at a rate of 625 mg·L−1 when the average fruitlet size is 10 mm in diameter. This thins ‘Summerred’ apples to a target of approximately five fruits/cm2 per trunk cross-sectional area or 50 to 70 fruits per 100 flower clusters without impacting on fruit quality, yield, or return bloom the next year.

scholarly journals Effects of applications of a complex and N-Ca fertilizer on leaf and fruit nutrient concentrations and some fruit quality parameters in two apple cultivars

2011 ◽  
Vol 32 (No. 1) ◽  
pp. 9-16
Author(s):  
T. E Sotiropoulos ◽  
I. N Therios ◽  
K. N Dimassi ◽  
V. Tsirakoglou
Keyword(s):  
Fruit Quality ◽  
Malus Domestica ◽  
Boron Concentration ◽  
Sampling Period ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Nutrient Concentrations ◽  
Malus Domestica Borkh ◽  
Golden Delicious ◽  
Apple Cultivars

The aim of this research was to study the effects of application of ‘hydrocomplex’ (H) and ‘Norway nitrate’ (NN) fertilizers on leaf and fruit nutrient concentrations and some fruit quality parameters in the following apple (Malus domestica Borkh) cultivars (cvs.): Golden Delicious and Black Ben Davis. Applications of 50 kg NN, 75 kg NN, 50 kg NN plus 50 kg H and 75 kg NN plus 25 kg H per 0.1 hectare significantly increased leaf Ca concentration of the cv. Golden Delicious in comparison with the control in the July 15 sampling period. Boron concentration of leaves of the cv. Black Ben Davis increased steadily throughout the season. Applications of 75 kg H and 75 kg H plus 25 kg NN per 0.1 hectare significantly increased fruit B concentration of the cv. Black Ben Davis at harvest. The ratios N/Ca, K/Ca and K + Mg/Ca in fruit were calculated for all treatments. Applications of 25–75 kg NN, 25–75 kg H as well as the combination of the two fertilizers decreased the ratios N/Ca, K/Ca and K + Mg/Ca of fruits of the cvs. Golden Delicious and Black Ben Davis in comparison with the control at harvest. Applications of 50 kg (ΝΝ), 75 kg (Η), 25 kg (ΝΝ) plus 75 kg (H) and 75 kg (NN) plus 25 kg (H) per 0.1 hectare significantly increased soluble solids of fruits of the cv. Golden Delicious at harvest.  

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