Management of Tomato Yellow Leaf Curl Virus through Netting

The Agriculturists ◽

10.3329/agric.v5i1.5191 ◽

2010 ◽

pp. 1-5

Author(s):

A Mugit ◽

AM Akanda

Keyword(s):

Disease Incidence ◽

Tomato Yellow Leaf ◽

Yellow Leaf ◽

Tomato Seedlings ◽

Leaf Curl Virus ◽

Leaf Curl

Tomato seedlings were raised in the netted seedbeds before transplanting in order to study the effect of netting on the incidence of Tomato yellow leaf curl virus in the field. Two types of nets, namely, fine (40 mesh) and coarse (10 mesh) and insecticidal spray with imidacloprid @ 0.1% were used in the experiment. Disease incidence and severity, yield and yield contributing characters were recorded. Results show that the disease incidence was reduced by 12 to 37% and yield was increased by 5 to 21% due to netting and pesticidal spray. Of the two types of nets, fine net (40 mesh) was more effective than coarse net (10 mesh).

Download Full-text

First Report of Tomato yellow leaf curl virus on Tomato Crops in Greece

Plant Disease ◽

10.1094/pdis.2001.85.6.678c ◽

2001 ◽

Vol 85 (6) ◽

pp. 678-678 ◽

Cited By ~ 13

Author(s):

A. D. Avgelis ◽

N. Roditakis ◽

C. I. Dovas ◽

N. I. Katis ◽

C. Varveri ◽

...

Keyword(s):

Disease Incidence ◽

Rflp Analysis ◽

Tomato Yellow Leaf ◽

Yellow Leaf ◽

Degenerate Primers ◽

Sequence Comparisons ◽

Tomato Plants ◽

First Report ◽

Leaf Curl Virus ◽

Leaf Curl

In late summer 2000, tomato (Lycopersicon esculentum Mill.) grown in greenhouses in Ierapetra, Tympaki, and Chania (Crete) showed leaf curling, reduced leaf size, yellowing, shortened internodes, and a bushy appearance. More than 30 ha of tomato greenhouses were affected and the disease incidence ranged from 15 to 60% with estimated crop losses of over $500,000. Similar symptoms were observed in tomato samples from Marathon (Attiki) and Southern Peloponnese. All greenhouses with infected plants were infested with high populations of Bemisia tabaci (Gennadius), which were also observed outside the greenhouses on several weeds. Tomato symptoms were similar to those caused by Tomato yellow leaf curl virus (TYLCV). The assumed virus could not be transmitted mechanically but successful transmission was obtained by grafting onto healthy tomato plants. Over 100 samples of symptomatic tomato plants collected from Crete and southern Peloponnese gave positive reactions when tested by ELISA using monoclonal antibodies to TYLCV-European (Adgen Ltd). The serological results were confirmed by PCR using two pairs of primers, universal degenerate (1) and MA 13 and MA 17 (2), amplifying different parts of the virus genome. The restriction fragment length polymorphism (RFLP) analysis (AluI, HaeIII, and TaqI) of the 541 bp amplicon obtained with the degenerate primers showed patterns similar to TYLCV-Is (Israeli species). The second pair of primers gave the expected 348 bp product, which was sequenced. Sequence comparisons revealed 99% identity with TYLCV-Is (EMBL no. X15656, X76319). The resulting sequence was at least 97.7% identical to sequences of TYLCV isolates from the Dominician Republic (EMBL no. AF024715), Cuba (EMBL no. AJ223505), Portugal (EMBL no. AF105975), Iran (EMBL no. AJ13271), and Spain (EMBL no. AF071228). The disease appeared for the first time in 1992 in Tymbaki, but was limited to very few plants in one glasshouse. However, the cause was not determined. To our knowledge, this is the first report of TYLCV of the Begomovirus genus in Greece. References: (1) D. Deng et al. Ann. Appl. Biol. 125:327, 1994. (2) J. Navas-Castillo et al. J. Virol. Methods 75:195, 1998.

Download Full-text

Comparative Efficacy of Silver Metallic Plastic Mulch, Botanicals and Insecticides in Controlling Tomato Yellow Leaf Curl Disease

SAARC Journal of Agriculture ◽

10.3329/sja.v18i2.51110 ◽

2021 ◽

Vol 18 (2) ◽

pp. 77-86

Author(s):

S Akter ◽

MB Hossain ◽

S Akter ◽

T Hasan ◽

AU Mahmud

Keyword(s):

Disease Severity ◽

Growth Parameters ◽

Disease Incidence ◽

Tomato Yellow Leaf ◽

Control Treatment ◽

Insect Vectors ◽

Yellow Leaf ◽

Plastic Mulch ◽

Leaf Curl Virus ◽

Leaf Curl

Tomato Yellow Leaf Curl caused by Tomato Yellow Leaf Curl Virus (TYLCV) is one of the most important diseases of tomato causing heavy losses in yield and quality of fruits. Damage caused through phloem feeding and transmission of TYLCV by the insect vectors whitefly (Bemisiatabaci). In this study the competence of silver metallic plastic mulch, botanicals and insecticides were assessed to manage the Tomato Yellow Leaf Curl Virus (TYLCV) by controlling the insect vectors. In total 7 treatments including control were considered viz. T1=Imidacloprid, T2= ACmix, T3= Subicron, T4= Neemax, T5= Multineem, T6 = Silver metallic plastic mulch and T7= Control. All the treatments showed significant influence on different assayed parameters in the test crop tomato. The lowest disease incidence, disease severity and whitefly association was found in T6 treatment (silver metallic plastic mulch) that was 2.87%, 1.72% and 2.0% at 60 days after transplanting (DAT) respectively. While the highest disease incidence, disease severity and whitefly association were found in T7 treatment (control treatment) that was 14.71%, 46.22% and 18, respectively, at 60 DAT. From the relationship study between disease incidence and disease severity with whitefly association, it was revealed that disease incidence and severity of TYLCV was increased with increasing of whitefly population and vice-versa. Among the treatments, growth parameters, yield and yield attributers were also found better in T6treatment (silver metallic plastic mulch). Silver metallic plastic mulch is the best option to manage the TYLCV by controlling the insect vectors, whitefly instead of insecticides. SAARC J. Agri., 18(2): 77-86 (2020)

Download Full-text

Integrated Management of Tomato Yellow Leaf Curl Virus and its Whitefly Vector in Tomato

Journal of Economic Entomology ◽

10.1093/jee/toz051 ◽

2019 ◽

Vol 112 (4) ◽

pp. 1526-1540 ◽

Cited By ~ 6

Author(s):

David G Riley ◽

Rajagopalbabu Srinivasan

Keyword(s):

Symptom Severity ◽

Virus Disease ◽

Disease Incidence ◽

Tomato Yellow Leaf ◽

Yellow Leaf ◽

Virus Family ◽

Tomato Yield ◽

Tomato Cultivars ◽

Leaf Curl Virus ◽

Leaf Curl

AbstractWhitefly-transmitted Tomato yellow leaf curl virus (Family Geminiviridae; Genus Begomovirus) severely restricts tomato production in the Southeastern United States. Whitefly and tomato yellow leaf curl virus management studies typically investigate control tactics individually, but successful management of this pest complex more often relies on a combination of tactics. This study examined the individual and combined effects of tomato yellow leaf curl virus-resistant cultivars, insecticides, and metallic reflective mulch on whiteflies, tomato yellow leaf curl virus disease incidence, and marketable tomato yields using split-split plot trials over 3 yr. Reflective mulch significantly reduced whitefly adults and nymphs and tomato yellow leaf curl virus symptom severity in all 3 yr of the study. Reflective mulch treatments also provided greater marketable tomato yield in 2 out of 3 yr. Imidacloprid and cyantraniliprole treatments reduced whitefly adults and nymphs’ establishment and marginally increased yields, but there was no significant insecticide effect on tomato yellow leaf curl virus incidence/symptom severity compared with the non-treated check. Virus-resistant tomato cultivars did not influence whitefly populations, but provided consistent reduction in virus disease incidence. Interactions between host plant resistance and insecticide treatments ranged from strongly additive in the standard white plastic mulch treatment to only marginally additive in the reflective mulch treatments in terms of enhancing tomato yields. tomato yellow leaf curl virus-resistant tomato cultivars and reflective mulch provided the bulk of the protection against tomato yellow leaf curl virus disease incidence. However, it was the combination of all the best tactics (reflective mulch, cyantraniliprole, ‘Security’ hyb. tomato yellow leaf curl virus-resistant) that provided the maximum increase in marketable tomato yield (2.8-fold) over the least effective combination (white mulch, no whitefly insecticide, ‘FL47’ hyb. tomato yellow leaf curl virus-susceptible).

Download Full-text

Effect of Imidacloprid on Incidence of Tomato yellow leaf curl virus

Plant Disease ◽

10.1094/pdis.2001.85.1.84 ◽

2001 ◽

Vol 85 (1) ◽

pp. 84-87 ◽

Cited By ~ 13

Author(s):

N. E. Ahmed ◽

H. O. Kanan ◽

Y. Sugimoto ◽

Y. Q. Ma ◽

S. Inanaga

Keyword(s):

Disease Incidence ◽

Field Trials ◽

Tomato Yellow Leaf ◽

Yellow Leaf ◽

Tomato Plants ◽

Stages Of Growth ◽

Tomato Yield ◽

The Mean ◽

Leaf Curl Virus ◽

Leaf Curl

Confidor, an imidacloprid insecticide, was used in two applications at four rates (47.6, 71.4, 95.2, and 119 g a.i./ha) for indirectly controlling Tomato yellow leaf curl virus (TYLCV) in field plantings of tomato. This spray regimen was compared with standard applications of cypermethrins at 10- to 15-day intervals throughout the growing season. In three field trials, a combination of integrated pest management (IPM) practices and two applications of Confidor at the two highest rates immediately after planting and 6 weeks later, protected tomato plants against the disease until 12 weeks after sowing. All rates of Confidor reduced disease incidence compared with standard chemical control applied in an integrated strategy, and quantitative efficacy increased with increase of insecticide rate. In the three seasons, the mean incidence of TYLCV 12 weeks after sowing was 42.7% in plots not adopting IPM compared with 15.7% in those that did. Disease incidence was reduced by Confidor treatments to 2.2 to 17%. Confidor-treated plots consistently had higher yields than control plots, and the yields decreased with the decrease in the rate of Confidor application. Confidor offers several advantages over standard applications of cypermethrins to control TYLCV. When applied immediately after planting, its long-lasting systemic activity protected the crop against the disease during early stages of growth. In addition, it reduced the number of sprays and increased tomato yield.

Download Full-text

Control of the Bemisia tabaci/Tomato yellow leaf curl virus complex on protected tomato crops in Algarve (Portugal)*

EPPO Bulletin ◽

10.1046/j.1365-2338.2002.00558.x ◽

2002 ◽

Vol 32 (1) ◽

pp. 31-35

Author(s):

A. F. Arsenio ◽

E. Neto ◽

N. Ramos ◽

S. Mangerico ◽

E. Fortunato ◽

...

Keyword(s):

Bemisia Tabaci ◽

Tomato Yellow Leaf ◽

Yellow Leaf ◽

Virus Complex ◽

Leaf Curl Virus ◽

Leaf Curl

Download Full-text

Study of a collection of tomato hybrids with genetic resistance to the yellow leaf curl virus in Southern Russia

Kartofel` i ovoshi ◽

10.25630/pav.2020.32.41.007 ◽

2020 ◽

pp. 30-34

Author(s):

С.Ф. Гавриш ◽

Т.А. Редичкина ◽

А.В. Буц ◽

Г.М. Артемьева

Keyword(s):

Resistance Genes ◽

Molecular Genetic Analysis ◽

Tomato Yellow Leaf ◽

Tomato Mosaic Virus ◽

Average Weight ◽

Yellow Leaf ◽

The South ◽

Economically Valuable Traits ◽

Leaf Curl Virus ◽

Leaf Curl

Дана информация об изучении коллекции гибридов F1томата (Solanum lycopersicum L.) зарубежной селекции различных фирм-оригинаторов, рекомендованных производителями семян как толерантные к вирусу желтой курчавости листьев томата. Все гибриды обладали комплексом хозяйственно ценных признаков и набором генов устойчивости к основным заболеваниям томата, в том числе к новому для юга России опасному патогену с максимальным потенциальным риском – вирусу желтой курчавости листьев томата (Tomato yellow leaf curl virus — TYLCV). Исследования проведены в 2017-2018 годах в лаборатории пасленовых культур ООО «НИИСОК» и в лаборатории молекулярной диагностики растений ООО «Семеновод». Всего было протестировано 34 гибрида F1 томата. Гибриды оценивали по совокупности хозяйственно ценных признаков, также проводили молекулярно-генетический анализ на наличие и аллельное состояние основных генов устойчивости: к вирусу табачной мозаики (Tm2а), фузариозному увяданию (I2), вертициллезному увяданию (Ve), к кладоспориозу (Cf9), нематодам (Mi1.2), вирусу бронзовости томата (Sw5), вирусу желтой курчавости листьев томата (Ty3a). Установлено, что все проанализированные гибриды томата с заявленной оригинаторами семян устойчивостью к вирусу желтой курчавости листьев были гетерозиготны по гену Ty3a. На основании проведенных исследований и с учетом требований рынка разработаны модели гибридов F1 томата юга России. Перспективный гибрид томата должен обладать индетерминантным типом роста с укороченными междоузлиями (4,5-5 см) а также хорошей облиственностью. Плоды томата должны быть с красной равномерной окраской без зеленого пятна у плодоножки, с плоскоокруглой или округлой формой плода и со средней массой 220-270 г. Для повышения транспортабельности томатов необходимо, чтобы плоды отличались высокой прочностью и характеризовались хорошей лежкостью. Урожайность гибрида томата должна быть более 30 кг/м2, а товарность - не менее 85%. Гибрид томата должен обладать следующим набором генов устойчивости в гетерозиготном состоянии: Ty3a, Mi1.2, Cf-9, а также в гомозиготном состоянии: Tm2a, I2, Ve. The article provides information on the study of the collection of F1 tomato hybrids (Solanum lycopersicumL.) of foreign breeding from various firms-originators recommended for cultivation in regions with a strong spread of tomato yellow leaf curl virus. All hybrids had a complex of economically valuable traits and a set of genes for resistance to the main diseases of tomato, including a new dangerous pathogen for the South of Russia with a maximum potential risk — the tomato yellow leaf curl virus (TYLCV). The studies were carried out in 2017-2018 in the Solanaceae Laboratory of LLC NIISOK and in the Molecular Diagnostics Laboratory of Plants of LLC Semenovod. A total of 34 F1 tomato hybrids were tested. The hybrids were assessed by a set of economically valuable traits. Molecular genetic analysis was also carried out for the presence and allelic state of the main resistance genes: Tomato mosaic virus (Tm2a), Fusarium wilt (I2), Werticillium wilt (Ve), Cladosporium fulvum (Cf9), Nematodes (Mi1.2), Tomato spotted wilt virus (Sw5), Tomato yellow leaf curl virus (Ty3a). It was found that all the analyzed tomato hybrids with the declared by seed originators resistance to yellow leaf curl virus were heterozygous for the Ty3a gene. Based on the conducted research and taking into account the market requirements, models of F1 tomato hybrids for protected ground for the South of Russia have been developed. A promising tomato hybrid should have an indeterminate growth type with shortened internodes (4.5-5 cm) and good foliage. Tomato fruits should have a uniform red color without green shoulders, with a flat-round or round shape of the fruit and with an average weight of 220-270 g. To increase the transportability of tomatoes, it is necessary that the fruits are highly firm and characterized by good shelf life. The yield of tomato hybrid should be more than 30 kg/m2, and marketability should be at least 85%. The tomato hybrid should have the following set of resistance genes in a heterozygous state: Ty3a, Mi1.2, Cf-9, and also in a homozygous state: Tm2a, I2, Ve.

Download Full-text