scholarly journals Yield formation and quality characteristics of early potatoes during a short growing period

2008 ◽  
Vol 13 (4) ◽  
pp. 390 ◽  
Author(s):  
L. MUSTONEN
Keyword(s):  
Nitrogen Fertilization ◽  
Dry Matter ◽  
Tuber Yield ◽  
Sugar Content ◽  
Matter Content ◽  
Nitrate Content ◽  
Dry Matter Content ◽  
Nitrogen Application ◽  
Yield And Quality

The effects of nitrogen fertilization on the yield and quality of early potato (Solanum tuberosum L.) were studied at MTT Agrifood Research Finland during 1996–1997. Cultivars were harvested at three times. The experimental layout was a split-split-plot with harvest times as main plots and nitrogen fertilization and potato cultivars as the subplots. The fertilizer treatments were 60 and 120 kg N ha-1 and the cultivars tested were Timo, Gloria and Van Gogh. The harvest times were 57–62, 70–75 and 85–90 days after planting. Application of 120 kg N ha-1 intensifi ed canopy development and increased leaf area of the stands. At early harvest the tuber yield of all cultivars receiving the higher nitrogen application increased by 0.5–2.5 t ha-1. The highest yielding cultivar was Timo. At last harvest, the higher nitrogen treatment increased yield by 3.0–6.2 t ha-1. The highest yielding cultivars were Timo and Van Gogh. The dry matter content of tubers was very low, 13.8–17.2%, at the fi rst harvest and the higher nitrogen application reduced dry matter content by 0.3–1.0%. The highest fertilizer application rate resulted in the largest tuber size. Nitrogen application, however, affected the quality of potatoes by decreasing the dry matter content. The nitrate content in tubers increased signifi cantly with the increasing level of nitrogen. The range of nitrate content in tubers fl uctuated between 13 and 189 mg kg-1 fresh weight showing good controlling of nitrate values. Harvest time affected sucrose content and the reducing sugar content in tubers, but nitrogen fertilizer did not change the sugar content of tubers. As tuber yield and quality during a short growing season are affected mainly by intercepted radiation, methods to increase tuber yield should focus on reducing the time to emergence, improving haulm growth after emergence and increasing the harvest index.;

scholarly journals INFLUENCE OF FERTILIZERS AND GROWTH REGULATOR ON THE CHANGE OF BIOCHEMICAL PROPERTIES OF HYBRIDS OF ONION DURING STORAGE

2018 ◽  
pp. 67-70
Author(s):  
A. R. Bebris ◽  
V. A. Borisov ◽  
N. A. Fillrose ◽  
S. A. Maslovsky ◽  
G. F. Monahos
Keyword(s):  
Growth Regulator ◽  
Dry Matter ◽  
Sugar Content ◽  
Matter Content ◽  
F1 Hybrids ◽  
Federal State ◽  
Nitrate Content ◽  
Dry Matter Content ◽  
Russian Scientific Research Institute

Research staff All-Russian Scientific Research Institute of Vegetable Growing – Branch of the Federal State Budgetary Scientific Institution Federal Scientific Vegetable Center in collaboration with Russian state agrarian University – Moscow Timiryazev agricultural Academy conducted research (2014-2016) on the effect of fertilizers and plant growth regulators on changes in the quality of onions of the Pervenets F1, Bennito F1 hybrids and Poisk 012 F1 during storage. As a result of research, the greatest effect was obtained from the complex application of N90P90K90 in combination with trace elements (tenso-cocktail) and a growth regulator Zircon. This system allowed to obtain high biochemical parameters of onions. At the end of the 7 months of storage (October-may), the highest dry matter and sugar content and the minimum nitrate content was observed in Pervenets F1 onions, as well as in hybrid Bennito F1. In the latematuring hybrid onions Poisk 012 F1 at the end of storage, the dry matter content decreased to 6,8-7,3%, sugars to 3,6-4,1%, vitamin "C" to 3,2-4,9 mg%, and nitrates increased to 92,1 mg/kg, which led to a decrease in product quality and large losses of onions from diseases and natural losses (up to 48-59%). The main reason for these losses was the lack of maturity of bulbs,low solids and sugars during harvest. It is obvious that for long-term storage it is necessary to use bulbs with a dry matter content of at least 10%. It was found out that feeding of onions during the beginning of the formation of food organizations with potassium nitrate, treatment with a growth regulator of Zircon and a complex of microelements of tenso-cocktail contributes to better preservation of the quality of onions.

Effects of Actinidia yellowing ringspot virus on the yield and quality of kiwifruit

Plant Disease ◽  
2021 ◽  
Author(s):  
Yi Wu ◽  
Yicheng Wang ◽  
Jiaxiu Sun ◽  
Yuling Liu ◽  
SHRESTHA SUJATA ◽  
...  
Keyword(s):  
Dry Matter ◽  
Matter Content ◽  
Fruit Yield ◽  
Ringspot Virus ◽  
Shaanxi Province ◽  
Dry Matter Content ◽  
Total Acid ◽  
Yield And Quality ◽  
Acid Ratio

China is the origin and distribution center of kiwifruit, as well as the country with the largest cultivated area and output of kiwifruit. A previous study found that a new kiwifruit virus, Actinidia yellowing ringspot virus (AYRSpV), has been detected in kiwifruit samples with yellowed leaves. The incidence of this virus was high in kiwifruit plantings in Shaanxi Province. To determine the symptoms of this viral infection and the effects of this virus on the yield and quality of kiwifruits, we measured leaf chlorophyll levels and the fruit yield, total sugar, total acid and dry matter contents of ‘Hayward’ kiwifruits grafted with AYRSpV-infected scions. The results showed that after AYRSpV infection, symptoms including chlorotic ringspots were mainly observed in the spring and gradually recovered with high summer temperatures. A few of the leaves that did not recover showed symptoms of albinism, which lasted until the leaves fell. We found that AYRSpV infection could reduce the chlorophyll content of ‘Hayward’ kiwifruit by 74.61-76.64%, the fruit yield by 14.50-24.10%, the sugar to acid ratio by 50.09-50.57%, and the fruit dry matter content by 1.67-1.78%. Our results showed that AYRSpV infection could significantly affect the yield and quality of ‘Hayward’ kiwifruit.

scholarly journals The effect of ecological growing on the potatoes yield and quality

2011 ◽  
Vol 51 (No. 9) ◽  
pp. 397-402 ◽  
Author(s):  
K. Hamouz ◽  
J. Lachman ◽  
P. Dvořák ◽  
V. Pivec
Keyword(s):  
Mechanical Damage ◽  
Field Trials ◽  
Matter Content ◽  
Point Of View ◽  
Nitrate Content ◽  
Dry Matter Content ◽  
Yield And Quality ◽  
Negative Effect ◽  
Cultivated Potatoes

In the years 1995–1997 the effect of ecological growing on the yield and selected parameters of quality of consumer potatoes (in comparison with conventional way) were investigated. The ecological way of growing differed in the lack of chemical protection against diseases and pests and industrial fertilizers. Field trials were realised with seven varieties (Impala, Karin, Agria, Korela, Rosella, Santé and Ornella) on two sites (Uhříněves and Valečov). The ecological way of growing had markedly negative effect on the yield (decrease by 36%). In qualitative parameters the ecological way increased inconclusively polyphenol content (by 10.2%), decreased inconclusively nitrate content (by 11.0%) and reducing sugars (by 22%). It did not affect dry matter content, resistance of tubers to mechanical damage, table value and glycoalkaloid content. Variety Santé achieved the best results from the point of view of the yield and majority of qualitative parameters among varieties. Qualitative parameters of ecologically cultivated potatoes were significantly affected by the year of cultivation.

scholarly journals Effects of Doses and Splits of Fertilizer Application on Harvesting Time, Yield and Quality of Mango CV. Amrapali

2012 ◽  
Vol 37 (2) ◽  
pp. 279-293 ◽  
Author(s):  
Babul C Sarker ◽  
MA Rahim
Keyword(s):  
Zinc Sulphate ◽  
Sugar Content ◽  
Titratable Acidity ◽  
Matter Content ◽  
Reducing Sugar ◽  
Dry Matter Content ◽  
Harvesting Time ◽  
Total Sugar Content ◽  
Yield And Quality

The experiment was carried out at the Germplasm Centre of Bangladesh   Agricultural University, Mymensingh during the fruiting season of 2005-06 to   investigate the effects of fertilizer and its installment of application on   harvesting time, yield and quality of fruits of 8 years old mango plant cv. Amrapali. Four fertilizer doses i.e. T1 : 50% of the fertilizer dose (cowdung 12.5 kg, urea 375 g, TSP200g, MoP125 g, gypsum 125 g and zinc sulphate 7.5 g per plant), T2 : 100% of the fertilizer dose (cowdung 25 kg, urea 750 g, TSP400 g, MoP 250 g, gypsum  250 g and zinc sulphate 15 g per plant), T3 : 150% of the fertilizer dose (cowdung  37.5 kg, urea 1125 g, TSP 600 g, MoP 375 g, gypsum 375 g and zinc sulphate 22.5 g per plant), and T4 : control (no fertilizer) and three splits of application i.e. A1 : One installment (whole fertilizer applied on 15 September), A2 : Two installments (15 September and 15 March) and A3 : Three installments (15 September, 15 March and 15 May) were included as treatments. Plants receiving 150% of the fertilizer dose in three installments caused delayed harvest by 11 days compared  to control than that of the control. Plants treated with 150% of fertilizer dose in combination with three installments produced the highest number of fruits (96/ plant) as well as the highest yield (19.55 kg/plant) as compared to control (23/   plant and 3.48 kg/plant). Applying fertilizer at 150% of the fertilizer dose in  three installments improved the fruit quality with regard to TSS, pH, titratable acidity, vitamin C, moisture content, dry matter content, reducing sugar, non reducing sugar and total sugar content over control. Thus, this treatment may be recommended for fertilizer management in mango cultivation. DOI: http://dx.doi.org/10.3329/bjar.v37i2.11231 Bangladesh J. Agril. Res. 37(2): 279-293, June 2012

scholarly journals The effects of flower removal and earthing up on tuber yield and quality of potato (Solanum tuberosum L.)

2021 ◽  
Vol 66 (2) ◽  
pp. 121-137
Author(s):  
Fitsum Gebregwergis ◽  
Mehari Gebremicheal ◽  
Hailay Gebremedhin ◽  
Abraha Asefa
Keyword(s):  
Solanum Tuberosum ◽  
Tuber Yield ◽  
Solanum Tuberosum L ◽  
Block Design ◽  
Matter Content ◽  
Tuber Number ◽  
Dry Matter Content ◽  
Tuber Weight ◽  
Yield And Quality

A field experiment was conducted in Eastern Tigray, Ethiopia, during the summer season to determine the effects of flower removal and earthing up time on the tuber yield and quality of potato (Solanum tuberosum L.). The experiment comprised three flower removal stages and five earthing up time treatments, which were laid out in a randomized complete block design (RCBD) of a 5x3 factorial arrangement with three replications. Data collected on tuber yield and quality parameters were analyzed using SAS version 9.2. The interaction of flower removal stages and earthing up time treatments affected marketable and unmarketable tuber number and yield, total tuber number and yield, large-sized tuber weight, and number of large-sized tubers. The medium and small-sized tubers were also affected by main treatments but not by their interaction treatments. Similarly, dry matter content was significantly (p<0.05) affected by flower removal alone, but not by earthing up time and its interaction with flower removal. Generally, the highest marketable tuber yield (30.25 t ha-1), large-sized tuber weight (424.9 g), the number of large-sized tubers (5), and total tuber yield (30.96 t ha-1) were recorded in the treatment of potato flower removed at the bud stage and earthed up at 15 days after complete emergence. Therefore, the removal of potato flowers at the bud stage and earthing up at 15 days after complete emergence and common cultivation can be practiced for better tuber yield and quality of potato.

scholarly journals ẢNH HƯỞNG CỦA NỒNG ĐỘ Na2SO3 ĐẾN MỘT SỐ GIỐNG SẮN TRIỂN VỌNG TẠI THỪA THIÊN HUẾ

2020 ◽  
Vol 4 (3) ◽  
pp. 2012-2019
Author(s):  
Nguyễn Đình Thi ◽  
Thái Thị Hồng Mỹ ◽  
Lê Thị Hương Xuân
Keyword(s):  
Ethanol Production ◽  
Dry Matter ◽  
Starch Content ◽  
Growth Yield ◽  
Matter Content ◽  
Dry Matter Content ◽  
Root Yield ◽  
Yield And Quality ◽  
Cassava Varieties

Nghiên cứu ảnh hưởng của các nồng độ Na2SO3 (0, 100, 300, 500 ppm) đến 03 giống sắn KM 94, KM 21-12 và KM 444 trong năm 2019 tại vùng sinh thái gò đồi thị xã Hương Trà, tỉnh Thừa Thiên Huế nhằm mục đích xác định ảnh hưởng và nồng độ Na2SO3 phù hợp cho cây sắn. Kết quả đạt được là: 1) Phun Na2SO3 ở các nồng độ thí nghiệm đã tăng sinh trưởng thân - lá - củ, năng suất, chất lượng củ và hiệu quả kinh tế của 03 giống sắn thí nghiệm. 2) Tại nồng độ phun Na2SO3 từ 300 đến 500 ppm, so với đối chứng giống KM 94 tăng năng suất thực thu 19,5 - 20,2%, tỷ lệ sắn lát đạt 40,9 - 41,1%, hàm lượng tinh bột đạt 29,3 - 30,2% và năng suất ethanol tăng 23,6 - 26,6%; Giống KM 21-12 tăng năng suất thực thu 15,1 - 18,6%, tỷ lệ sắn lát đạt 40,5 - 41,0%, hàm lượng tinh bột đạt 29,7 - 29,8% và năng suất ethanol tăng 21,6 - 25,8%; Giống KM 444 tăng năng suất thực thu 18,4 - 19,9%, tỷ lệ sắn lát đạt 40,6 - 40,8%, hàm lượng tinh bột đạt 30,3 - 30,9% và năng suất ethanol tăng 24,9 - 25,7%. ABSTRACT The study on the effects of Na2SO3 concentrations (0, 100, 300, 500 ppm) on 03 cassava varieties (KM 94, KM 21-12 and KM444) was conducted in 2019 in hilly ecological area of Huong Tra town, Thua Thien Hue province to determine the effect and suitable concentration of Na2SO3 for cassava. The results showed that: 1) Spraying Na2SO3 at a rate of 640 liters/ha with experimental concentrations increased stem - leaf - root growth, yield and quality of roots and economic efficiency of all of 03 cassava varieties. 2) Spraying Na2SO3 at concentrations from 300 to 500 ppm, compared with the control, KM 94 increased root yield of 19.5 - 20.2%, dry matter content reached 40.9 - 41.1%, starch content reached 29.3 - 30.2% and ethanol production increased by 23.6 - 26.6%; KM 21 - 12 increased root yield of 15.1 - 18.6%, dry matter content reached 40.5 - 41.0%, starch content reached 29.7 - 29.8% and ethanol production increased by 21.6 - 25.8%; KM 444 increased root yield of 18.4 - 19.9%, dry matter content reached 40.6 - 40.8%, starch content reached 30.3 - 30.9% and ethanol production increased by 24.9 - 25.7%.  

scholarly journals Effect of harvesting dates on the yield and tuber quality of processing potatoes

2019 ◽  
Vol 44 (1) ◽  
pp. 179-193
Author(s):  
M Sharkar ◽  
JU Ahmed ◽  
SF Ahmed ◽  
SMZ Al Meraj ◽  
M. Mohi Ud Din
Keyword(s):  
Specific Gravity ◽  
Dry Matter ◽  
Tuber Yield ◽  
Starch Content ◽  
Matter Content ◽  
Tuber Quality ◽  
Dry Matter Content ◽  
Potato Varieties ◽  
Potato Products

An experiment was conducted to study the effect of harvesting dates and variety on the yield and processing quality of potato tuber. Three processing potato varieties (BARI Alu-25, Asterix; BARI Alu-28, Lady Rosetta and BARI Alu-29, Courage) were used as test crops and they were harvested at different days after planting [80, 90, and 100 days after planting (DAP)]. The three processing potato varieties showed higher tuber yield of Grade A (9.12 t ha-1) and B (13.64 t ha-1). The highest tuber yield (Grade A+B) [29.62 t ha-1] and total tuber yield (35.97 t ha-1) was found in Courage at 90 and 100 DAP harvest, respectively. The variety Lady Rosetta attained the highest percent of processable tuber yield (86.8% of the total tuber yield), the maximum dry matter content (26.37%), specific gravity (1.102) at 90 DAP harvest and this variety also contained the highest mean starch content (111.75 mg g-1 FW) followed by Courage (111.17 mg g-1 FW) and Asterix (103.95 mg g-1 FW). Optimum dry matter content (24.07%), specific gravity (1.091), starch content (110.15 mg g-1 FW), processable tuber yield (26.62 t ha-1) and total tuber yield (32.76 t ha-1) was found at 90 DAP harvest and therefore, it could be mentioned as suitable harvesting date for processing purposes. Among the varieties, Lady Rosetta and Courage were found preferable potato varieties that could be used for processing of potato products. Bangladesh J. Agril. Res. 44(1): 179-193, March 2019

scholarly journals Tuber yield and quality of potato chips as affected by mulch, variety, and potash levels under western Terai, Nepal

2013 ◽  
Vol 2 ◽  
pp. 121-132
Author(s):  
R Dhakal ◽  
SK Sah ◽  
SM Shakya ◽  
KB Basnet
Keyword(s):  
Dry Matter ◽  
Tuber Yield ◽  
Reducing Sugar ◽  
Potato Chips ◽  
Dry Matter Content ◽  
Dry Matter Accumulation ◽  
Net Return ◽  
Yield And Quality ◽  
Tuber Production

An experiment was conducted at Divyapuri of Nawalparasi district in the western Terai during winter season 2008/09. There were 16 treatments consisting of two mulch levels (mulched and no mulch) as main plot, two varieties (Kufri Chipsona-1 and Kufri Chipsona-2) as sub plot and four levels of potash (0, 50, 100 and 150 kg K2O /ha) as sub-sub plot arranged in split-split plot design with four replications to evaluate the effect of these treatments on tuber production and their effect on quality of potato chips. The result showed that plant height, number of shoot per plant, dry matter accumulation, number and weight of tuber per plant and tuber yield were significantly higher in Kufri Chipsona-2 than in Kufri Chipsona-1. Lower reducing sugar and browning percent of chips and higher dry matter content and chips recovery were also recorded in Kufri Chipsona-2 compared to Kufri Chipsona-1. Simple economic analysis on gross return, net return and B/C ratio were higher in Kufri Chipsona-2. However, increasing levels of potash from 0-150 kg K2O /ha increased the dry matter accumulation, LAI, number and weight of tuber per plant. The result also showed that as the level of potash increased there was a decrease level of reducing sugar and browning of chips as well. On the other hand, higher potash levels increased the percentage of fat content and recovery of chips. Also increase in potash levels resulted to increase in gross return, net return, and B/C ratio. There was no effect of mulching levels on tuber yield and quality of chips recovery. Of the two varieties, Kufri Chipsona-2 with 100 kg K2O/ha was found suitable for tuber production and recovery of chips quality. DOI: http://dx.doi.org/10.3126/ajn.v2i0.7527 Agronomy Journal of Nepal (Agron JN) Vol. 2: 2011 pp.121-132

scholarly journals Yield and Quality of Potato Varieties

2013 ◽  
Vol 14 (1) ◽  
pp. 41
Author(s):  
Josip Ćota ◽  
Azra Hadžić
Keyword(s):  
Dry Matter ◽  
Block Design ◽  
Matter Content ◽  
Dry Matter Content ◽  
Average Yield ◽  
Qualitative Properties ◽  
Potato Varieties ◽  
Yield And Quality ◽  
New Varieties

A two-year experiment (2009-2010) included four potato varieties (Desire, Romano, Bistra and Kis Sora). Experiments were conducted in Butmir (about 500 m/ asl) and Glamoč (approximately 900 m/ asl) region. The aim was to select new varieties for our area of cultivation. Productive characteristics of potato varieties (yield, weight and number of tubers per box) were examined. In the frame of qualitative properties, dry matter content and starch were examined. Trials were performed by randomised block design with four replications, and the results were analysed using the analysis of variance. Higher average yield was achieved by Romano cultivar by 8% compared to Desire and Kis Sora. Dry matter content ranged from 21.80% in Romano to 22.20% in Desiree. Examining varieties should be continued in the upcoming period in order to determine the most favourable conditions for cultivation in the area of Bosnia and Herzegovina.

scholarly journals Milk productivity and milk quality when feeding cows with silostan-containing haylage

2020 ◽  
Vol 17 ◽  
pp. 00007
Author(s):  
Sergey V. Karamaev ◽  
Anna S. Karamaeva ◽  
Khaidar Z. Valitov ◽  
Natalya V. Soboleva ◽  
Larisa N. Bakaeva
Keyword(s):  
Dry Matter ◽  
Sugar Content ◽  
Matter Content ◽  
Dry Matter Content ◽  
Middle Volga Region ◽  
Black And White ◽  
Quality Of Milk ◽  
Almost All ◽  
Bean Crop

In the Middle Volga region, alfalfa is the most widely used bean fodder. In recent years, one more bean crop is used – Fodder galega. The main disadvantage of almost all legumes is low sugar content and poor haylage making abilities. To eliminate this drawback, the biological product “Silostan” was developed. It is used as a preservative. The aim of the work is to study the effect of alfalfa and Fodder galega haylage made using the bio-preservative “Silostan” on milk production and quality of milk of black and white Samara cows. The use of Silostan increased the dry matter content by 5.2 and 4.5, ECE – by 12.8 and 17.5%, and digestible protein – by 27.1 and 15, 5%. The digestibility of dry matter increased – by 3.85 and 4.38%, crude protein – by 5.68 and 5.42%, crude fat– by 4.26 and 5.26%, crude fiber by 3.86 and 4.07%. The use of haylage with bio-preservatives increased the yield of cows for 305 days of lactation by 14.6 and 16.5%. The MFF increased by 0.05 and 0.06%, MFP – by 0.07 and 0.09%, respectively. The technological properties of milk improved, the milk consumption per 1 kg of ripened cheese decreased by 4.9 and 11.2%.

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