Cultivation method for revitalized potato material in the system of original seed production

Abstract To arrange a system of virus-free potato seed production in the Sakhalin region, a series of studies undertaken to come up with a method towards potato material cultivation in film-gauze greenhouses. At the initial stage, the key agrotechnical methods were developed for growing test-tube microplants, including optimal planting plans – 70×15 cm (the highest yield derived from a standard mini-tuber fraction pcs/m2), 70×30 cm (for clone selection); spraying with insecticides (Aktellik – 3 l/ha, Rogor – 2 l/ha) and fungicides (Ridomil – 1 kg/ha, Tsineb – 2.4 kg/ha) to combat agents transmitting viral and fungal infections; chlorocholine chloride treatment (1.1%) to reduce the growth of the vegetative mass; serological analysis of plants for latent infection with viruses X, Y, S, M, F; burning tops with Reglon (2 l/ha) 2 weeks before harvesting. A set of agrotechnical methods used for producing healthy seed tubers on the Timiryazevskoye seed farm made it possible to reduce the elite cultivation cycle from 5 to 4 years, increase the yield by 57.2%, and reduce the production cost by 43.5%. Subsequently, the methods worked out for producing potato seeds were improved based on modern breeding varieties and phytoregulators (Azolen, Elena, Extrasol, Epin-Extra, Zircon) in spray mixtures with the fungicide Shirlan, contributing to an increased yield up to 34% and efficiency of a standard seed fraction up to 33%. Under production conditions, this method provided a conditionally net income of 450-700 thousand rubles/ha.

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Ground control and state of elite potato seed breeding in the Central region of Russia and adjacent regions according to its data

сборник статей всероссийской научной конференции с международным участием "Растениеводство и луговодство" ◽

10.26897/978-5-9675-1762-4-2020-46 ◽

2020 ◽

Author(s):

S.E. Mikhalin S.E. ◽

Keyword(s):

Seed Production ◽

Central Region ◽

The State ◽

Ground Control ◽

Potato Seed ◽

Potato Diseases

The article sets out information on the conduct of soil control of the potato elite, provides information on the state of elite seed production of potatoes in the Central region of Russia according to the data of soil control - which regions participated in its implementation, how many samples and varieties of potatoes were provided for soil control in different years, what were the main varieties, which potato diseases were taken into account.

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Varietal Identity and Varietal Purity. Viral and Viroid Pathogens Controlled in Potato Seed Production

Potato Seed Production ◽

10.1007/978-3-030-60762-3_8 ◽

2021 ◽

pp. 87-93

Author(s):

Evgeny Alekseevich Simakov ◽

Elena Vasil’evna Oves ◽

Sergey Nikolaevich Zebrin ◽

Boris Vasil’evich Anisimov

Keyword(s):

Seed Production ◽

Potato Seed ◽

Varietal Purity

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Seed Borne Late Blight of Potato

Plant Health Progress ◽

10.1094/php-2002-0129-01-hm ◽

2002 ◽

Vol 3 (1) ◽

pp. 14 ◽

Cited By ~ 5

Author(s):

Mary L. Powelson ◽

Robin Ludy ◽

Heather Heather ◽

Debra A. Inglis ◽

Babette Gundersen ◽

...

Keyword(s):

Late Blight ◽

Seed Piece ◽

Transmission Rate ◽

Seed Transmission ◽

Management Program ◽

Healthy Plant ◽

Potato Seed ◽

Stand Establishment ◽

Seed Tubers ◽

Healthy Seed

Planting of potato seed pieces infected with Phytophthora infestans can lead to the introduction of late blight within a planting. When infected seed pieces are planted, there are three resulting scenarios: (i) a healthy plant emerges, (ii) no plant emerges because of the rapid decay of the seed piece, or (iii) a symptomatic plant emerges. A major factor favoring stand establishment and seed transmission is the severity of seed piece infection. When infection is severe, stand is compromised and transmission rate is low. When infection is mild, the plant emerges before the seed piece decays and, in some instances, the pathogen makes its way from the seed piece to the plant where a stem lesion is formed. Diseased seed tubers are the principle source of late blight inoculum for infection of healthy seed pieces. Treatment of infected or blighted seed tubers with a seed dressing with activity against P. infestans is not a viable tactic because the products are ineffective against established infections. Conversely, treatment of healthy seed pieces provides a high level of protection against late blight spores that are spread during the seed handling and planting operations. Optimum effectiveness is achieved when products are applied immediately following cutting, as none are effective against established infections. Seed treatment reduces the risk of seed transmission of late blight and enhances stand establishment and plant vigor. This tactic should be an important component of an integrated late blight management program. Accepted for publication 16 January 2002. Published 29 January 2002.

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A Set of Basic Agronomical and Protective Techniques Used in Potato Seed Production

Potato Seed Production ◽

10.1007/978-3-030-60762-3_7 ◽

2021 ◽

pp. 71-83

Author(s):

Boris Vasil’evich Anisimov ◽

Sergey Valentinovich Zhevora

Keyword(s):

Seed Production ◽

Potato Seed

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Simulated Glyphosate Drift to Potato Mother Plants and Effect on Daughter Tubers Used for Seed Production

Weed Technology ◽

10.1614/wt-d-13-00107.1 ◽

2014 ◽

Vol 28 (1) ◽

pp. 253-258 ◽

Cited By ~ 4

Author(s):

Harlene M. Hatterman-Valenti

Keyword(s):

Seed Production ◽

Total Yield ◽

Field Trials ◽

Russet Burbank ◽

Potato Cultivars ◽

Potato Seed ◽

Sprout Inhibition ◽

Tuber Bulking ◽

Mother Plants ◽

Glyphosate Drift

Field trials were conducted to evaluate the effect of simulated glyphosate drift rates applied to two non-irrigated potato cultivars in the late tuber bulking stage grown for potato seed production. Mother plants receiving a sublethal glyphosate application had similar yields regardless of the year or cultivar. ‘Red LaSoda' seed pieces visually evaluated the following spring had more sprout inhibition from glyphosate-treated plots. With ‘Russet Burbank', only seed pieces from mother plants that received more than 18 g ha−1 glyphosate showed sprout inhibition. Total yield reductions the year following glyphosate treatments were attributed to fewer and smaller tubers from plants that did not emerge or were delayed in emergence. Red LaSoda seed pieces from mother plants receiving ≥ 71 g ha−1 glyphosate yielded less than the nontreated. In 2005, Russet Burbank seed pieces from mother plants receiving ≥35 g ha−1 glyphosate had reduced yields, whereas in 2006, all glyphosate treatments reduced total yield compared with the nontreated.

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Hybrid true seed production from potato mother plant as influenced by nitrogen splitting and boron

Journal of Biological Research - Bollettino della Società Italiana di Biologia Sperimentale ◽

10.4081/jbr.0.8563 ◽

2020 ◽

Vol 93 (1) ◽

Author(s):

Rajesh Chakraborty ◽

Shahidul Islam ◽

Tuhin Suvra Roy

Keyword(s):

Seed Production ◽

Maximum Yield ◽

Potato Seed ◽

True Potato Seed ◽

Split Application ◽

Maximum Weight ◽

Factor B ◽

True Seed ◽

Two Factors ◽

Plot Design

Experiments were conducted to show the effect of split application of nitrogen (SN) and boron (B) on hybrid True Potato Seed (TPS) production. The TPS-67 (♂) and MF-II (♀) were used as crossing materials. The experiments comprised two factors i.e., factor-A; nitrogen splitting (4 levels): 2 split (SN0-Conventional), 3 split (SN1), 4 split (SN2) and 5 split (SN3) where 50 kg N ha–1 applied as basal from total 300 kg N ha–1 with each split application and the rest 250 kg N ha–1 was splitted as per treatment at 10 days intervals started from 30 DAP (days after planting); and factor- B; boron (4 levels): 0 (B0), 4 (B1), 6 (B2) and 8 (B3) kg B ha–1 under split-plot design with three replications. We found that SN and/or B influenced the hybrid TPS production. The maximum yield (2160.1 mg) of TPS plant–1 was found from SN1B3 and the minimum (1001.8 mg) was in SN0B0. The maximum yield (172.81 kg) of TPS ha–1 was found from SN1B3 and the minimum (80.14 kg) was in SN0B0. The maximum weight (86.87 mg) of 100-TPS was found from SN3B3; whereas, the minimum (53.36 mg) was in SN0B0.

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World Youth Day 2016 in the Archdiocese of Lodz: An Example of the Eventization of Faith

Religions ◽

10.3390/rel11100503 ◽

2020 ◽

Vol 11 (10) ◽

pp. 503

Author(s):

Joanna Bik ◽

Andrzej Stasiak

Keyword(s):

Participant Observation ◽

Professional Preparation ◽

Early 21St Century ◽

Pilot Survey ◽

Scholarly Publications ◽

Initial Stage ◽

The World ◽

Image Building ◽

Media Reports ◽

To Come

The organization of numerous religious mass events of international, or even global, reach is a phenomenon of the early 21st century. It is sometimes termed “eventization of faith”. This article presents a multifaceted analysis of the initial stage of the World Youth Day in 2016, which took place in the Archdiocese of Łódź (Poland). While multiple scholarly publications have been written about World Youth Day (WYD) itself, its first part of preparatory nature, the so-called “Days in Dioceses”, has not been studied yet. The authors of this paper used a wide array of research methods, such as participant observation, questionnaire (official statistics concerning 10,000 pilgrims), pilot survey (258 respondents), and analysis of media reports (over 100 films and 30 articles). The analysis of the organizational method of such a major religious event leads to a conclusion that it is a complex logistic undertaking, which requires professional preparation and implementation by a team of specialists in different fields as well as an army of deeply involved volunteers and public services employees. Over 10.2 thousand young pilgrims (mostly at the age of 15–29) participated in the youth meeting in the Archdiocese of Łódź; apart from spiritual motives (strengthening faith, meeting Pope Francis, following in the footsteps of St. John Paul II) they exhibited strong social (willingness to be in the community of believers, making new friends), recreational and tourist (visiting Poland) needs as well. In view of the hermetic and low-budget character of World Youth Day, its impact on the economy of the region was deemed negligible. Above all, the event played a promotional and image-building part, which perhaps in the years to come will result in an increase in visits of foreign tourists to Łódź.

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Glyphosate-Resistant Waterhemp (Amaranthus rudis) Control and Economic Returns with Herbicide Programs in Soybean

Weed Technology ◽

10.1614/wt-08-069.1 ◽

2009 ◽

Vol 23 (1) ◽

pp. 54-61 ◽

Cited By ~ 32

Author(s):

Travis R. Legleiter ◽

Kevin W. Bradley ◽

Raymond E. Massey

Keyword(s):

Seed Production ◽

Field Experiments ◽

Multiple Resistance ◽

Net Income ◽

Economic Returns ◽

Protoporphyrinogen Oxidase ◽

Amaranthus Rudis ◽

Herbicide Programs

Field experiments were conducted in Platte County, Missouri, during 2006 and 2007 to evaluate PRE, POST, and PRE followed by (fb) POST herbicide programs for the control of glyphosate-resistant waterhemp in soybean. All PRE fb POST treatments resulted in at least 66 and 70% control of glyphosate-resistant waterhemp in 2006 and 2007, respectively. Control of glyphosate-resistant waterhemp was less than 23% with lactofen and acifluorfen in 2006, but at least 64% in 2007. Variability in control likely resulted from differences in trial locations and a population of protoporphyrinogen oxidase (PPO)–resistant waterhemp at the Platte County site in 2006 compared with 2007. In both years, glyphosate resulted in less than 23% control of glyphosate-resistant waterhemp and provided the least control of all herbicide programs. Programs containing PRE herbicides resulted in waterhemp densities of less than 5 plants/m2, whereas the POST glyphosate treatment resulted in 38 to 70 plants/m2. Waterhemp seed production was reduced at least 78% in all PRE fb POST programs, from 55 to 71% in POST programs containing lactofen and acifluorfen and by only 21% in the POST glyphosate treatment. Soybean yields corresponded to the level of waterhemp control achieved in both years, with the lowest yields resulting from programs that provided poorest waterhemp control. PRE applications ofS-metolachlor plus metribuzin provided one of the highest net incomes in both years and resulted in $271 to $340/ha greater net income than the glyphosate-only treatment. Collectively, the results from these experiments illustrate the effectiveness of PRE herbicides for the control of glyphosate-resistant waterhemp in glyphosate-resistant soybean and the inconsistency of PPO-inhibiting herbicides or PPO-inhibiting herbicide combinations for the control of waterhemp populations with multiple resistance to glyphosate and PPO-inhibiting herbicides.

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Distribution, diversity and potential agronomic value of Medicago polymorpha in Sardinia

The Journal of Agricultural Science ◽

10.1017/s0021859600073378 ◽

1995 ◽

Vol 124 (3) ◽

pp. 419-426 ◽

Cited By ~ 10

Author(s):

A. Loi ◽

C. Porqueddu ◽

F. Veronesi ◽

P. S. Cocks

Keyword(s):

Seed Production ◽

Principal Component ◽

Future Research ◽

Medicago Polymorpha ◽

Winter Temperatures ◽

Single Entry ◽

Morphological Variables ◽

To Come ◽

Cluster 2 ◽

Better Than

SUMMARYThirty-five populations of Medicago polymorpha were collected from throughout Sardinia (Italy) in 1989 with a view to developing pasture species suitable for improving degraded grasslands in the northern Mediterranean basin. Herbage and seed production were compared with the Australian cultivar, Circle Valley, over 2 years at Bonassai, north Sardinia. Regeneration in the 2 years after sowing and seed size were also estimated. All variables were related to collection site parameters using multivariate analysis.Herbage production varied between 2 and 8 t dry matter/ha, and up to 1·5 t/ha of seed was produced. K-means clustering of agronomic and morphological variables indicated that there were two groups present; one similar to variety polymorpha and one to variety vulgaris. There were two other single entry clusters, one of which contained cv. Circle Valley. Principal component analysis of the environmental variables indicated that cluster 1 (vulgaris) was more likely to come from mountainous areas where winter temperatures are low, and cluster 2 (polymorpha) from coastal areas where temperatures are mild. Regeneration of cluster 1 was better than that of cluster 2, which in turn was better than Circle Valley, indicating that populations in cluster 1 are better adapted to the management system imposed at Bonassai.The results indicate that M. polymorpha has considerable potential to improve the grasslands of Sardinia. However, it is unlikely that imported cultivars will be successful, and it seems important that the selection of local populations should continue. Commercial seed production in Sardinia is likely to be a problem, and grazing management under the conditions of communal ownership may have to be reviewed. It is important that future research and development involves farmers and other industry groups.

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