scholarly journals Quality of New Potatoes (Solanum tuberosum L.) in Response to Plant Biostimulants Application

Agriculture ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 265
Author(s):  
Wanda Wadas ◽  
Tomasz Dziugieł

Background: In sustainable crop production focusing on high-value products, biostimulants have been gaining increasing importance, thus the hypothesis that plant biostimulants could contribute to improving new potatoes quality; Methods: The effects of the seaweed extracts Bio algeen S90 (Ascophyllum nodosum) and Kelpak SL (Ecklonia maxima), as well as the humic and fulvic acids in HumiPlant (leonardite extract) on the tuber quality of very early potato cultivars (‘Denar’, ‘Lord’, ‘Miłek’) were investigated. Potatoes were harvested 75 days after planting (the end of June); Results: The biostimulants did not affect dry matter, protein, total sugars, monosaccharides and sucrose or L-ascorbic acid content in new potatoes. Bio-algeen S90 increased the starch content in tubers of all potato cultivars tested, on average, by 4.8 g∙kg−1 compared with control treatment without biostimulant, whereas Kelpak SL and HumiPlant reduced nitrates content only in tubers of ‘Denar’ cultivar, on average, by 8.50 mg∙kg−1, and increased ascorbate-nitrate index (IAN) by 0.29. The biostimulants did not affect potato after-cooking darkening. Both the nutritional value of new potatoes and after-cooking darkening depended on the cultivar and weather conditions during the potato growing period to a great extent; Conclusions: Plant biostimulants slightly affected quality of new potatoes.

Author(s):  
Н. S. Shataliuk ◽  
V. G. Kuriata

The effect of pre-harvest treatment of gooseberry bushes (GROSSULARIA RECLINAT (L.) MILL) of cv. Mashenka with a 0.3% aqueous solution of ethylene product on the yield and quality characteristics of berries, quantitative changes in the content of structural polysaccharides during ripening were studied. The experiments were carried out in the field from 2015 to 2017. The experimental sites were randomly chosen, there were five bushes in a row, the repetition of the field experiment was fivefold. The plants were treated with 0.3% aqueous esphone two weeks prior to berry harvesting using an OP-2 backpack. The berries under analysis were selected every four days after treatment with the preparation. The polysaccharide content was determined on a fixed material. The berries were fixed in the field with liquid nitrogen, dried in a drying oven at 70º C to air - dry state. The determination of cellulose and pectin content was carried out by weight method, hemicellulose and non-structural carbohydrates (sugars and starch) in gooseberry fruits were carried out by iodometric method. To evaluate the quality of the berries, their analysis for total acidity was performed by potentiometric titration, ascorbic acid was determined using potassium hexacyanoferrate. The analytical replicability of the studies is fivefold. Statistical processing of the results was performed using the computer program ‘Statistica-6’. The significance of the difference between the control and experiment indicators was determined by Student's t-test. It is found out that on the fourth, eighth and twelfth days, the content of reducing sugars, sucrose and their amounts in the berries treated with ethyleneproducer plants was higher than in the control sample. A more intense decrease in the total acidity of the berries of the experimental sample was observed, while the ascorbic acid content did not change significantly. A higher amylase activity in berries due to ethylene products during ripening was also established, resulting in a faster decrease in the starch content in the berries and an increase in the sugar content. Pre-harvesting of gooseberry with ethylene product esphone leads to increased accumulation of pectic substances in the products, a more intensive hydrolysis of structural polysaccharides in comparison with the control sample, which serves as an indicator of more intense maceration of fetal tissues. The use of pre-harvest processing of gooseberry with ethylene product esphone has led to increased yields and higher quality of gooseberry crop production and has many prospects for the development of mechanized harvesting technologies.


2021 ◽  
Vol 2 (44) ◽  
pp. 21-21
Author(s):  
Alexander Saakian ◽  
◽  

In 2005-2015. studied the effect of liquid organic fertilizer BIOOD-1 as foliar feeding on the yield and quality of various potato varieties in changing meteorological conditions. According to the results of the experiments, it was established that the most stable yields under various weather conditions were shown by the potatoes of the mid-season variety Bryansk delicacy. The low starch content of varieties Nevsky, Udacha was noted in years of high humidity, but with a lack of moisture, the starch content of these varieties increased in the background variant and in the experiment with organic fertilization. Keywords: CLIMATIC CONDITIONS, HYDROTHERMAL COEFFICIENT, MEAN SENIOR PRECIPITATION, POTATO, YIELD, STARCH, HUMIC FERTILIZERS


2018 ◽  
Vol 17 (3) ◽  
pp. 17-28
Author(s):  
Krzysztof Kalinowski ◽  
Wanda Wadas ◽  
Izolda Borysiak-Marciniak

2019 ◽  
Vol 65 (2) ◽  
pp. 159-165
Author(s):  
Rodney Lindizga Gondwe ◽  
Rintaro Kinoshita ◽  
Tsutomu Suminoe ◽  
Daigo Aiuchi ◽  
Jiwan Palta ◽  
...  

2012 ◽  
Vol 76 (1) ◽  
pp. 99-118 ◽  
Author(s):  
Fouad Mohamed ◽  
Khalid El-Hamed ◽  
Mohammed Elwan ◽  
Mennat-Allah Hussien

Impact of Grafting on Watermelon Growth, Fruit Yield and QualityGrafting is an alternative approach to reduce crop damage resulting from soil-borne pathogens and increases plant abiotic stress tolerance, which in turn increases crop production. The purpose of this study was to determine whether grafting could improve plant growth and fruit quality of watermelon through monitoring the changes induced by different rootstock-scion combinations. Watermelon (Citrullus lanatus) cv. Aswan F1was grafted into five rootstocks (Nun 6001 F1, Strongtosa F1, Tetsukabuto F1, Ferro F1and Shintoza F1) hybrids betweenCucurbita maximaandCucurbita moschata.Highest vegetative growth and fruit yield were obtained by ‘Nun 6001 F1’ as a rootstock using the tongue approach method. Grafting reduced significantly sex ratio by reducing the number of male flowers. Grafting increased significantly lycopene content in fruit flesh by 57% over the control treatment, but did not affect soluble solids content (SSC). One third of the control non-grafted plants died andFusarium oxysporumwas isolated as the responsible pathogen. These results indicate that grafting watermelon onto specific rootstock influences growth, productivity, and quality of the fruit as well as disease resistance. Grafting can be suggested as an alternative method to control ofFusariumwilt in watermelon production.


Author(s):  
Arif Şanlı ◽  
Sena Özcan ◽  
Fatma Zehra Ok

This research aimed to determine the yield performance and post-harvest storage behavior of potato Cultivars with different maturing groups under Isparta conditions at 2018. In this study, Agria, Agata, Alegria, Desiree, Granola, Hermes, Lady Anna, Marabel, Morphona and Russet Burbank potato Cultivars, which were widely cultivated in Turkey, were used. After determining the yield performance of cultivars under field conditions, tuber samples taken from each cultivar were stored at 6-8°C for 6 months. Tuber yields of Cultivars varied between 2860-5331 kg/da and vegetation period ranged between 97.7-146.6 days. In the storage period, the time taken to break the dormancy in 50% of the tubers ranged between 23.3-111.6 days, and dormancy was broken earlier in the early season Cultivars. At the end of the 6 months storage period, it was determined that the Cultivars lost weight between 4.13-6.48%. Starch ratios, reducing sugar content and French fries yields varied depending on the storage time of the cultivars, but generally decreased during storage period. There were significant changes in the quality of French fry and table stock. In the storage period Cultivars with low dry matter ratio which are not suitable for the French fries industry and the Cultivars with early characteristics had higher weight and quality losses in storage. It was concluded that dormancy duration, maturing characteristics of potato Cultivars had a significant effect on storage quality, and therefore, storage period should be determined by taking into account the varietal characteristics in potato storage.


Horticulturae ◽  
2021 ◽  
Vol 7 (10) ◽  
pp. 377
Author(s):  
Sary H. Brengi ◽  
Abdel-Ghany M. El-Gindy ◽  
Islam El-Sharkawy ◽  
Ibrahim A. Abouelsaad

Potato (Solanum tuberosum L.) is an important crop in Egypt with great trade value for the export market. The addition of agrochemicals with possibly containing heavy metals, such as cadmium (Cd), decreases the quality of the final product. Generally, little is known about the factors that influence Cd content in this crop. The current study estimated the Cd levels in different organs of three potato cultivars grown in four commercial regions across Egypt. Further, we investigated the soil properties that affected Cd uptake during two growing seasons. With the exception of the Cd content of the soils, no relationships were detected between the tested soil properties (i.e., pH, conductivity, organic matter, and clay content) and Cd content in potato organs, because the soil from different regions showed comparable levels for these parameters. The average Cd content in the peeled tubers among different cultivars (0.145 mg Kg−1 DW) was below the maximum limit (0.5 mg Kg−1 DW). The patterns of Cd accumulation in potato organs were constant among cultivars, with the highest levels detected in leaves (~82%), followed by stems (~16.5%), and the lowest content observed in tubers (~1.5%). The study showed that the tested potato cultivars exhibited diversity in the accumulation levels of Cd in the tubers (~2.6-fold). The cultivar Suntana displayed the lowest Cd levels among different field sites for the two growing seasons, suggesting the potential involvement of genetic factors.


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