Effect of Potassium and Polyamine Sprays on Fruit Set, Fruit Retention, Yield and Fruit Quality of Amhat Date Palm

El-Migeed, M. M. M. A.; Mostafa, E. A. M.; Ashour, N. E.; Hassan, H.S.A.; Mohamed, Dorria M.; Saleh, M. M. S.

doi:10.3923/ijar.2013.77.86

Cited by 10 publications

(5 citation statements)

References 2 publications

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“…The date powder showed 8.9% moisture, 80.67% total sugars, 2.20% protein, 2.59% fibers and 1.46% ash (on the fresh weight bases). These results were in agreement with those reported by Salem and Hegazi (1971) for dry dates and by El-Sharnouby et al, 2007, for date powder, andby Ahmed et al, (2012) and Abd El-Migeed, et al, (2013) for soft dates and by Mrabet et al, (2008) for date paste.…”

Section: Equipment Specificationssupporting

confidence: 93%

Technological and economical studies on production of date powder and paste from some low quality Egyptian dates

Rabie

Salem

Assous

et al. 2021

Egyptian International Journal of Palms

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The aim of this work was to utilize the low quality date palm (prishible soft date and seedling of dry dates) to produce date paste and date powder, respectively. Amhat; a cultivar soft variety was used at rutab stage for producing date paste, while the dry dates were used for producing date powder by applying simple technology. These two products can be easily handled, transported, and utilized. They are shelf stable so that can be available all the year round for making many food products.The date paste production percentage from Amhat cultivar was 40-42%. Chemical composition of date paste was: 24.48% moisture, 61.97% total sugars, 2.04% protein, 1.97% fibers and 1.05% ash. The estimated date powder production percentage from the dry date seedling cultivar was 50-55%. The chemical analysis showed that date powder contains: 8.9% moisture, 80.67% total sugars, 2.20% protein, 2.59% fibers and 1.46 ash. The economical evaluation of the study indicated the feasibility of investment in production of date paste, date powder and date pits powder because it had internal rate of return of 28.5 %, which exceeds the posted bank interest value. In addition, the percentage of return to costs was 4.44% and the percentage of return to investment was 19.1%. The overhead invested in the study can be regained within two years and two months.

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Section: Equipment Specificationssupporting

confidence: 93%

Technological and economical studies on production of date powder and paste from some low quality Egyptian dates

Rabie

Salem

Assous

et al. 2021

Egyptian International Journal of Palms

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“…In litchi and apple, application of polyamine also increased fruit set, fruit retention, and the number of fruits/tree [71,72]. Likewise, Abd EL-Migeed et al [73], revealed a synergistic effect between KNO 3 and putrescine on fruit set, fruit retention and yield. This suggestion is supported by the findings reported in this research, stating that combined spraying of KNO 3 and putrescine results in the highest fruit retention and the biggest decrease in the percentage of fruit drop, and consequently, increased fruit yield, in comparison with KNO 3 alone, in Ewais mango trees.…”

Section: Discussionmentioning

confidence: 98%

Synergistic Effects of Applying Potassium Nitrate Spray with Putrescine on Productivity and Fruit Quality of Mango Trees cv. Ewais

Alebidi,

Abdel-Sattar,

Mostafa

et al. 2023

Agronomy

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The current investigation represents of the synergistic effects of application of potassium nitrate (KNO3) in combination with putrescine (Put) on flowering, productivity, and fruit quality on Ewais mango (Mangifera indica L.) trees during the seasons 2021/2022 and 2022/2023. The selected trees were sprayed at three different stages, including flower bud differentiation, full bloom, and beginning of the fruit set, with one of the following treatments: control, 2% KNO3, 4% KNO3, 50 ppm Put, 75 ppm Put, 2% KNO3 + 50 ppm Put, 2% KNO3 + 75 ppm Put, 4% KNO3 + 50 ppm Put, 4% KNO3 + 75 ppm Put. Results showed that all treatments were successful in improving the productivity of mango trees by increasing flowering terminal shoots, fruit set, fruit retention, number of fruits/tree, yield, and fruit yield increment while reducing the percentage of fruit drop, as well as improving the quality of mango fruits cv. Ewais by increasing fruit length, fruit diameter, TSS, total sugars, V.C, and total phenol and carotenoid content, but at the same time, diminishing the total acidity, as compared with control. Based on this research, the application of 4% KNO3 in conjunction with 75 ppm Putrescine has shown the most prominent advances in enhancing Ewais tree productivity and fruit quality. The investigation successfully highlighted the synergistic effect of using KNO3 and putrescine to improve mango fruit yield and quality.

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“…10 -10 m M/L (PUT) + Multi-micronutrient treatment recorded the highest significant values of TSS (12.47%) in the fruit juice of Valencia orange followed by the control treatment (12.40 %) with no significant differences between them in the first season, meanwhile in the second season Multimicronutrient treatment recorded the highest significant values of TSS (13.53 %) shown in as shown in Table (5). These results are in consistent with those reported by Zeerban et al (1994), Qin and Qin (1996), and Sarrwy et al (2012) they stated that spraying with boron achieved the highest total soluble solids concentration of orange and other fruit crops. Also, Malik and Singh (2006), Marzouk and Kassem (2010), Ayad et al (2011), Kassem et al (2011), Abd El-Migeed et al (2013, Nikfar and Abdoosi (2013) and Raeisi et al (2013) stated that polyamines (Putrescine) improved total soluble solids concentration of other fruit crops.…”

Section: B Fruit Chemical Content: 1 Total Soluble Solids (Tss)tssmentioning

confidence: 99%

“…Also, Khan et al (2012) and Baghdady et al (2014) indicated that foliar spraying with Chelated zinc and boron significantly increased fruit quality in orange and madarin fruits. Besides, Abd El-Migeed et al (2013) found that polyamine (Putrescine) improved fruit quality in Amhat date palm.…”

Section: B Fruit Chemical Content: 1 Total Soluble Solids (Tss)tssmentioning

confidence: 99%

“…Furthermore, Sajid et al, (2010) concluded that % fruit set was not significantly affected by foliar spray of Zn and B alone or either in combination in sweet orange. In addition, Bioniel and Protacio (2002), Malik and Singh (2006) and Abd El-Migeed et al, (2013) found that increases in fruit set have been obtained with polyamines (putrescine) in citrus and other fruit crops. In regard to the fruit retention percentage data preformed that, there were insignificant differences between all treatments in the first season with respect to fruit number/tree.…”

Section: Effect Of Multi-micronutrient and Putruscine Application Alomentioning

confidence: 99%

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Effect of Foliar Application with Multi-Micronutrients and Polyamines on Productivity and Storeability of Valencia Oranges

Abo-El-Ez

Elsayada²,

All

et al. 2018

Journal of Plant Production

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The present study was carried out during two successive seasons 2015 and 2016 on of Valencia orange trees (Citrus sinensis L. Osbeck) budded on Volkamer lemon (Citrus volkameriana L.) rootstock, grown in sandy soil under drip irrigation system, in a citrus orchard located in El-Kwamel farm, college of Agriculture, Sohag University, Egypt. The selected trees (33 tree) of Valencia orange cv. were set as a randomized complete block design (RCBD) with 3 replications. The target of this study was to investigate the effect of foliar spraying of multi-micronutrients (1% B, 200 ppm Zn and 250 ppm Fe) and three levels of putruscine (10-3, 10-5 and 10-7mM/Lit) individually or their combinations at full bloom and after ten days from fruit set on productivity and some quality parameters upon harvest as well as during storage at room (ambient) temperature for better marketability of Valencia orange without economical loss. It can be concluded that 10-3mM/Lit (PUT) + Multi-micronutrients treatment gave the highest values of fruit set, retained fruit/tree, fruit weight (g), fruit juice weight (g), fruit juice volume (cm) and fruit peel thickness (mm) of Valencia orange. As well as it gave the highest rate of total soluble solids (TSS) percentage, TSS/acid ratio and ascorbic acid (100g juice) and the lowest values of fruit decay percentage during storage period. This study suggested that 10-3mM/Lit (PUT) + Multi-micronutrients treatment may be consider a useful technology for improve productivity and some quality parameters upon harvest of Valencia orange trees. As well as, the same treatments to avoid the negative quality effects during fruit storage at room (ambient) temperature especially increase the rate of total soluble solids percentage, TSS/acid ratio and ascorbic acid (100g juice) for better marketability of Valencia orange fruits without economical loss.

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Effect of Potassium and Polyamine Sprays on Fruit Set, Fruit Retention, Yield and Fruit Quality of Amhat Date Palm

Cited by 10 publications

References 2 publications

Technological and economical studies on production of date powder and paste from some low quality Egyptian dates

Technological and economical studies on production of date powder and paste from some low quality Egyptian dates

Synergistic Effects of Applying Potassium Nitrate Spray with Putrescine on Productivity and Fruit Quality of Mango Trees cv. Ewais

Effect of Foliar Application with Multi-Micronutrients and Polyamines on Productivity and Storeability of Valencia Oranges

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