scholarly journals The effect of nitrogen fertilization on yield efficiency and quality of tubers potato varieties cultivated in an integrated production system

2020 ◽  
pp. 15-22
Author(s):  
Cezary Trawczyński
Keyword(s):  
Nitrogen Uptake ◽  
Nitrogen Fertilization ◽  
Tuber Yield ◽  
Total Yield ◽  
Weather Conditions ◽  
Utilization Efficiency ◽  
Agronomic Efficiency ◽  
Potato Varieties ◽  
Yield Structure

The aim of the research conducted in the years 2016 – 2018 was to perform the effect of nitrogen on the total yield and quality evaluation of edible and starch potato varieties harvested after tuber maturity, as well as to establish fertilization efficiency indices. The quality of tubers was expressed: yield structure, share of deformations, content of starch and nitrates (V), but the nitrogen utilization efficiency as agronomic efficiency (AE) and fertilizer recovery efficiency (FRE) in tubers. Two experimental factors were researched: nitrogen doses (0, 50,100, 150 kg·ha-1) and varieties (Impresja, Mazur, Otolia, Szyper and Widawa) tested under different weather conditions. The total yield fresh matter between nitrogen doses ranged from 42.8 to 53.7 t·ha-1 and for varieties from 42.1 (var. Szyper) to 54.8 t·ha-1 (var. Impresja). Increasing nitrogen doses caused an increase share in the yield structure big tubers (diameter above 60 mm), nitrates (V) and total nitrogen content and nitrogen uptake with tuber yield, but decrease starch content and nitrogen fertilization efficiency indicators. On the basis of quadratic function parameters, it was shown that the varieties of Impresja, Szyper and Otolia were characterized by greater requirements in relation to the optimal nitrogen dose than the varieties of Mazur and Widawa. More assessed features determined  the weather conditions during the growing season than the factors studied: the nitrogen fertilization dose and the variety. In the year with the highest amount of rainfall in relation to the average of many years, the largest decrease was recorded: tuber yield, share of big tubers in the yield structure, nitrogen uptake and agronomic efficiency. Year with the most rainfall was characterized by the highest reduction the yield of tubers, share big tubers in the yield structure, nitrogen uptake and its agronomic efficiency.  

scholarly journals Reduced Dosage of Methyl Bromide for Controlling Verticillium Wilt of Potato in Experimental and Commercial Plots

Plant Disease ◽  
1997 ◽  
Vol 81 (5) ◽  
pp. 469-474 ◽  
Author(s):  
A. Gamliel ◽  
A. Grinstein ◽  
Y. Peretz ◽  
L. Klein ◽  
A. Nachmias ◽  
...  
Keyword(s):  
Verticillium Wilt ◽  
Methyl Bromide ◽  
Large Scale ◽  
Field Experiments ◽  
Tuber Yield ◽  
Total Yield ◽  
Effective Control ◽  
Large Scale Field ◽  
Commercial Applications

The use of gas-impermeable films to reduce the dosage of methyl bromide (MB) required to control Verticillium wilt in potatoes was examined in field experiments, conducted in soils naturally infested with Verticillium dahliae. The incidence and severity of Verticillium wilt were significantly reduced (by 74 to 94%) by fumigation with MB at 50 g/m2 under standard low density polyethylene (LDPE) or at 25 g/m2 under gas-impermeable films. Fumigation at 25 g/m2 under LDPE was less effective. Disease severity was inversely correlated (r2 = 0.89 to 0.91) with chlorophyll content in the leaves. Fumigation also reduced (by 89 to 100%) stem colonization by the pathogen. Potato yield in the fumigated plots was significantly higher (26 to 69%), than in their nonfumigated counterparts, and was inversely correlated with disease index (r2 = 0.69 to 0.9). The percentage of high-value tubers (above 45 g) was 52 to 56% of total yield in the fumigated plots as compared with 32 to 40% in the nonfumigated controls. Thus, fumigation also improved the commercial quality of tuber yield. Effective control of V. dahliae and yield increases following MB fumigation at the recommended dosage or at a reduced dosage with gas-impermeable films was also observed in a consecutive crop. These results were verified in a large-scale field experiment using commercial applications, further demonstrating the feasibility of reducing MB dosages under farm conditions, without reducing its effectiveness in terms of disease control and yield improvement.

scholarly journals The relationship of agroclimatic factors and the yield of potato varieties in the conditions of the near Moscow region

2021 ◽  
Vol 2 (44) ◽  
pp. 21-21
Author(s):  
Alexander Saakian ◽  
◽  
Keyword(s):  
Starch Content ◽  
Organic Fertilizer ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Hydrothermal Coefficient ◽  
Potato Varieties ◽  
Yield And Quality ◽  
Relationship Of ◽  
The Relationship

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

scholarly journals Effects of Seedborne Potato Leafroll Virus on Russet Norkotah Potato

Plant Disease ◽  
1999 ◽  
Vol 83 (12) ◽  
pp. 1122-1124 ◽  
Author(s):  
P. B. Hamm ◽  
D. C. Hane
Keyword(s):  
Tuber Yield ◽  
Leaf Roll ◽  
Total Yield ◽  
Marketable Yield ◽  
Potato Leaf ◽  
Russet Norkotah ◽  
Infected Seed ◽  
Yield And Quality ◽  
Healthy Seed

Tuber yield and quality of cv. Russet Norkotah potato plants grown from seed infected with potato leaf roll virus (PLRV) were compared with tuber yield and quality of adjacent plants grown from virus-free seed. Plants from PLRV-infected seed produced at least 60% less total yield and 88% less marketable yield (tubers >85 g) than plants grown from healthy seed. PLRV-infected seed also produced plants with fewer and smaller tubers than plants grown from healthy seed. No compensatory yield was measured in plants grown from PLRV-free seed growing adjacent to plants from PLRV-infected seed.

scholarly journals Effect of Sulphur on the Yield and Quality of Potato Varieties in Tista Meander Floodplain Soil of Bangladesh

2019 ◽  
pp. 1-8
Author(s):  
M. Waliur Rahman ◽  
Saiful Islam ◽  
M. Monirul Islam ◽  
M. Sazzad Hossain
Keyword(s):  
Specific Gravity ◽  
Significant Influence ◽  
Dry Matter ◽  
Tuber Yield ◽  
Starch Content ◽  
Dry Matter Yield ◽  
Potato Varieties ◽  
Yield And Quality ◽  
Starch Yield

A field experiment was carried out at Breeder seed Production Centre (BSPC), Debiganj, Panchagarh during the Rabi season of 2016-2017 to study the effect of five levels of sulphur application on yield and quality attributes of three potato varieties. The main objective of the experiment was to determine the effect of sulphur on the yield and quality of potato varieties. There were five treatments comprising different levels of sulphur such as T1 (control-no sulphur), T2 (75% RDS), T3 (100% RDS), T4 (125% RDS) and T5 (150% RDS). Three BARI released potato variety; BARI Alu 36 (4.26 R), BARI Alu 40 (4.45W) and BARI Alu 25 (Asterix) were used in this experiment. The experiment was laid out in a randomized complete block design (RCBD) with three replications. The tuber yield and yield contributing characters were significantly influenced by the application of sulphur. Maximum tuber yield (39.28 t/ha) was recorded in BARI Alu 40 (4.45 w). Highest dry matter content, specific gravity and starch content were found in BARI Alu 40 (4.45 w), which was followed by BARI Alu 36 (4.26 R) in case of specific gravity and starch content. Sulphur application in potato varieties showed significant influence on tuber yield of potato. This parameter increased with increasing dose of sulphur up to 100% RDS. Thereafter, further increase in sulphur did not showed any remarkable influence. Besides, sulphur application in potato varieties showed significant influence on tuber quality of potato. The maximum dry matter yield and starch yield were recorded in the treatment T3, which was followed by all other  treatments except T1. The minimum dry matter yield and starch yield were recorded in the treatment T1. Combined effect showed insignificant influences between varieties and sulphur levels. BARI Alu 40 (4.45 w) was found superior over other varieties in terms of yield and quality attributes. Treatment T3 (100% RDS) was found superior over other treatments in terms of yield. 

scholarly journals The response of potato tuber yield, nitrogen uptake, soil nitrate nitrogen to different nitrogen rates in red soil

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kailou Liu ◽  
Jiangxue Du ◽  
Yijun Zhong ◽  
Zhe Shen ◽  
Xichu Yu
Keyword(s):  
Nitrogen Uptake ◽  
Nitrogen Fertilizer ◽  
Nitrogen Balance ◽  
Nitrogen Fertilization ◽  
Tuber Yield ◽  
Nitrate Nitrogen ◽  
Red Soil ◽  
Nitrogen Application ◽  
Nitrogen Surplus ◽  
Application Rates

AbstractNutrient-deficient red soil found in the southern region of China is increasingly being used for potato crops to meet the demand for this staple food. The application of nitrogen fertilizer is necessary to support the production of higher tuber yields; however, the links between nitrate nitrogen and the nitrogen balance in red soil are unknown. A field experiment was conducted in Jiangxi Province in 2017 and 2018 to determine the effects of different nitrogen application rates, 0 kg ha−1 (N0), 60 kg ha−1 (N60), 120 kg ha−1 (N120), 150 kg ha−1 (N150), 180 kg ha−1 (N180), 210 kg ha−1 (N210), and 240 kg ha−1 (N240, the highest rate used by local farmers), on potatoes growing in red soil. Data on tuber yield, crop nitrogen uptake, and the apparent nitrogen balance from the different treatments were collected when potatoes were harvested. Additionally, the content and stock of nitrate nitrogen at different soil depths were also measured. Nitrogen fertilization increased tuber yield but not significantly at application rates higher than 150 kg ha−1. We estimated that the threshold rates of nitrogen fertilizer application were 191 kg ha−1 in 2017 and 227 kg ha−1 in 2018, where the respective tuber yields were 19.7 and 20.4 t ha−1. Nitrogen uptake in potato in all nitrogen fertilization treatments was greater than that in N0 by 61.2–237% and 76.4–284% in 2017 and 2018, respectively. The apparent nitrogen surplus (the amount of nitrogen remaining from any nitrogen input minus nitrogen uptake) increased with increasing nitrogen application rates. The nitrate nitrogen stock at a soil depth of 0–60 cm was higher in the 210 and 240 kg ha−1 nitrogen rate treatments than in the other treatments. Moreover, double linear equations indicated that greater levels of nitrogen surplus increased the nitrate nitrogen content and stock in soils at 0–60 cm depths. Therefore, we estimate that the highest tuber yields of potato can be attained when 191–227 kg ha−1 nitrogen fertilizer is applied to red soil. Thus, the risk of nitrate nitrogen leaching from red soil increases exponentially when the apparent nitrogen balance rises above 94.3–100 kg ha−1.

scholarly journals Variability of Dutch potato varieties under various agroecological conditions in Serbia

Genetika ◽  
2016 ◽  
Vol 48 (1) ◽  
pp. 109-124 ◽  
Author(s):  
Nebojsa Momirovic ◽  
Zoran Brocic ◽  
Rade Stanisavljevic ◽  
Ratibor Strbanovic ◽  
Goran Gvozden ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Tuber Yield ◽  
Total Yield ◽  
Field Trials ◽  
Average Yield ◽  
Good Resistance ◽  
Potato Varieties ◽  
Air Temperatures ◽  
Random Block ◽  
Set Up

The study presents results of a three-year experiment of variability of different Dutch potato varieties in Serbia: Adora and Cleopatra (early), Innovator and Frisia (mediumearly) and Desiree and Kondor (medium-late). The research was conducted during 2008, 2009 and 2010, in three different soil and climatic locations: Zemun (100 m a.s.l.), Srbobran (86 m a.s.l.) and Guca (370 m a.s.l.). The four-repplicate field trials were set up using standard methodology according to the random block desing. The analysis of variance suggest that number of tubers per plant, number of market tubers per plant and total tuber yield were significantly fluctuating depending on genotype (G), year (Y) and the location (L). In addition to individual influences of different factors, their interactions were also pronounced (G x Y, G x L, Y x L, G x Y x L). In the three-year period average, the highest total yield was recorded in Zemun (35.80 t ha??), followed by Guca (29.32 t ha??), while the lowest average yield recorded was in Srbobran (27.38 t ha??). The highest average yield of tubers in the three-year period was recorded in the Cleopatra variety, followed by Adora variety, while the lowest average yield was recorded in the variety Frisia. Obtained results show that the highest yields over observed locations were recorded in early varieties that formed medium number of tubers per plant (Cleopatra and Adora) and medium late varieties (Desiree and Kondor) that expressed good resistance to high air temperatures and stress caused by drought.

YIELD AND NITROGEN UPTAKE OF FORAGE SEEDINGS AS AFFECTED BY NITROGEN FERTILIZATION

1961 ◽  
Vol 41 (1) ◽  
pp. 176-187 ◽  
Author(s):  
E. A. Grant ◽  
C. S. Brown
Keyword(s):  
Nitrogen Fixation ◽  
Nitrogen Content ◽  
Nitrogen Uptake ◽  
Nitrogen Fertilization ◽  
Dry Matter ◽  
Total Yield ◽  
Yield Increase ◽  
Significant Yield ◽  
Second Year ◽  
Nitrogen Treatment

Over 2 tons of dry matter per acre were obtained from pure seedings of timothy and of brome in the seeding year with an application of 100 pounds of nitrogen per acre. Nitrogen at 200 and 400 pounds per acre produced no further significant yield increase. In the second year, yields were significantly increased by each increment of nitrogen applied in the seeding year up to and including 400 pounds per acre with brome and 200 pounds per acre with timothy. Nitrogen content of grasses increased with each increment of nitrogen in the seeding year but this effect was not consistent in the second year. Over the 2-year period grasses recovered approximately 65 per cent of the applied nitrogen at the 100- and 200-pound levels and about 40 per cent at the 400-pound level.Red clover and alfalfa seeded in mixture with timothy and with brome were about equal in yield to grass alone plus 100 pounds of nitrogen in the seeding year and were much superior in the second year. Application of 100 pounds of nitrogen to grass-legume mixtures increased both yield and nitrogen content in the first cutting. In subsequent cuttings, total yield and legume fraction of the yield were often depressed by nitrogen treatment; exceptions were noted where legume stands were weak.Apparent nitrogen fixation by the legumes was consistently reduced by nitrogen treatment. Vigorous legume stands had an apparent nitrogen fixation of 60 pounds per acre in the seeding year and up to 200 pounds in the second year.

scholarly journals Evaluation of Miscanthus grown for energy use

2016 ◽  
Vol 62 (No. 2) ◽  
pp. 92-97
Author(s):  
Z. Strašil
Keyword(s):  
Nitrogen Fertilization ◽  
Dry Matter ◽  
Energy Use ◽  
Weather Conditions ◽  
N Fertilization ◽  
Winter Period ◽  
Miscanthus Giganteus ◽  
Average Biomass ◽  
Biomass Yields

In the years 2003–2012 the effects of nitrogen fertilization and term of harvest on the dry matter yield and biomass quality of Miscanthus × giganteus were examined. The harvest was carried out each year in the autumn and in the spring following year. No significant differences in yields between the sites were observed but the effect of weather conditions in individual years dominated. The nitrogen fertilization increased average biomass yields at the site Prague-Ruzyně by about 14% at the dose of 100 kg/ha and at the site Lukavec by about 11% at the dose of 150 kg/ha in comparison without N fertilization. Average yields of dry matter at Prague-Ruzyně 19.60 t/ha and at Lukavec 18.24 t/ha were achieved at the autumn term of harvest. The loss of biomass over the winter period was 24.3% at Prague-Ruzyně and 24.0% at Lukavec. In the spring term of harvest lower contents of all monitored elements were detected in the biomass of Miscanthus compared to the autumn term of harvest.

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 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.;

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