scholarly journals Evaluation of IPM modules for the management of fruit borer and fruit rot diseases in tomato, Lycopersicon esculentum Miller

2016 ◽  
Vol 8 (1) ◽  
pp. 240-244
Author(s):  
S. D. Sharma ◽  
R. Devlash ◽  
Jitender Kumar ◽  
Brij Bala ◽  
R. S. Jamwal
Keyword(s):  
Lycopersicon Esculentum ◽  
Tomato Fruit ◽  
Tween 80 ◽  
Fruit Rot ◽  
Pheromone Traps ◽  
Tomato Crop ◽  
Net Returns ◽  
Fruit Borer ◽  
Marketable Fruit ◽  
The Cost

Among, five IPM modules tested against tomato fruit borer and fruit rot on tomato, the IPM module (M3) consisting of use of pheromone traps (@ 12 traps/ha) just after transplanting the tomato crop , Lycopersicon esculentum Miller for monitoring the population of Helicoverpa armigera . followed by three foliar sprays commencing with a mixture of lamba-cyhalothrin 5EC @ 0.8ml/L(0.04%) and Dithane Z-78 (Zineb) @ 2.5g/L (0.25%) after 10 days of appearance of moths in the traps (after 30 days of transplanting) followed by spray with a mixture of Helicide (Ha NPV) 100 LE @ 0.5ml/L+ Indofil M-45 @ 2.5g/L (0.25%) + Gur (0.05%) + Tween 80 (0.05%) after 15 days of first spray followed by spray with a mixture of lamba-cyhalothrin 5EC @ 0.8ml/L(0.04%) and moximate (cymoxanil + mancozeb) @ 0.25% after 15 days of the second spray was found to be most effective in minimizing the infestation of fruit borer and fruit rot diseases with 50.00% and 63.45% reduction over control, respectively. This module was also found to be most economic resulting in highest marketable fruit yield (255.94q/ha) and maximum net returns (Rs.10.36) per rupee spent. The present findings are of immense utility as there will be reduction in number of sprays resulting in the cost of production of tomato crop.

Responses of a long greenhouse tomato crop to summer CO2 enrichment

2006 ◽  
Vol 86 (Special Issue) ◽  
pp. 1395-1400 ◽  
Author(s):  
X. Hao ◽  
Q. Wang ◽  
S. Khosla
Keyword(s):  
Tomato Fruit ◽  
Co2 Enrichment ◽  
High Temperature Stress ◽  
Fruit Production ◽  
High Light Intensity ◽  
Vegetable Production ◽  
Tomato Crop ◽  
Tomato Production ◽  
Production Area ◽  
Marketable Fruit

While CO2 enrichment generally benefits tomato fruit production in winter its effects on summer tomato production (under high air temperature and strong ventilation) are still not clear, especially when the crop has been subjected to long-term CO2 enrichment in winter. Therefore, a study was initiated in 2005 to determine the feasibility of summer CO2 enrichment in southwestern Ontario, a major greenhouse vegetable production area in North America with very hot summers. The long tomato crop (cv. Rapsodie) was planted into rockwool slabs in six greenhouse compartments in January. From January to the middle of June, the tomato plants in all six greenhouse compartments were subjected to the same standard CO2 enrichment practice. From the end of June to August, three CO2 treatments (two compartments for each treatment) were applied: Control (ambient/no enrichment), Enrich1 (800 µL L-1 when ventilation was less than 10% and 400 µL L-1 when less than 50%) and Enrich2 (1200 µL L-1 when ventilation was less than 10% and 500 µL L-1 when less than 50%). In all treatments, CO2 enrichment ceased when ventilation requirement was more than 50%. Leaf photosynthesis, as indicated by the CO2 response curve, partially acclimated to the CO2 enrichment. Marketable fruit yield was reduced by the summer CO2 enrichment. Leaf deformation [short, thick, curled and somewhat crisp, dark grey-green leaves, so-called short leaf syndrome (SLS)] was observed in the greenhouse compartments with summer CO2 enrichment. SLS developed under high light intensity and high CO2 concentration might have limited response of the tomato crop to summer CO2 enrichment. Further investigation on the cause and mechanism of SLS is needed to improve the response of greenhouse tomatoes to summer CO2 enrichment. Key words: Photosynthesis, Lycopersicon esculentum, high temperature stress, acclimation

Fusarium oxysporum f. sp. lycopersici. [Descriptions of Fungi and Bacteria].

1992 ◽  
Author(s):  
D. Brayford
Keyword(s):  
South Africa ◽  
Great Britain ◽  
Lycopersicon Esculentum ◽  
Fusarium Oxysporum ◽  
Geographical Distribution ◽  
Tomato Fruit ◽  
Fruit Rot ◽  
Vascular Wilt ◽  
Planting Material ◽  
The World

Abstract A description is provided for Fusarium oxysporum f. sp. lycopersici. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Lycopersicon esculentum (tomato). May also infect other species of Lycopersicon. DISEASE: Vascular wilt. The fungus may also cause tomato fruit rot. GEOGRAPHICAL DISTRIBUTION: Widespread in tomato growing regions of the world. Africa: Kenya, Morocco, Nigeria, Republic of South Africa, Senegal, Tanzania, Tunisia. America: Argentina, Brazil, Canada, Cuba, Mexico, USA. Asia: China, India, Iran, Iraq, Israel, Japan, Korea, Pakistan. Australasia: Australia. Europe: Albania, Belgium, Bulgaria, France, Germany, Great Britain, Italy, The Netherlands, Spain, USSR. TRANSMISSION: The fungus is soil borne and may also be transmitted by seed (58, 3447; 67, 1486), planting material and locally by water flow.

scholarly journals Bayesian network for decision-support on pest management of tomato fruit borer, H. armigera

2017 ◽  
Vol 6 (4) ◽  
pp. 168 ◽  
Author(s):  
Niranjan Singh ◽  
Neha Gupta
Keyword(s):  
Decision Support ◽  
Bayesian Network ◽  
Pest Management ◽  
Tomato Fruit ◽  
Quantitative Information ◽  
Management Decision ◽  
Management Option ◽  
Tomato Crop ◽  
Ecological Information ◽  
Fruit Borer

Fruit borer (H. armigera) is the key pest of tomato, a prominent vegetable crop grown in northern plains of India. Timely availability of decision-support to the farmers on ‘whether and what management option is required’ is imperative for effective pest management. For decades, the pest economic threshold level (ETL) has been the basis to select an appropriate pest management option. This process requires quantitative information about pest activity, which needs to be scientifically observed in the farmers’ fields. However, a large section of the farming community is not able to scientifically obtain this kind of information. Moreover, in current pest management, decision-making depends upon a large range of agro-ecological information, besides pest activity. In this study, a Bayesian network-based method/model was devised for the selection of an appropriate management option for the effective management of fruit borer in tomato crop, based on tentative agro-ecological information, beside pest activity, that farmers provided. Thus, the resulting method can be used in decision support systems of agriculture with applies information and communication technology to automate and speed up the process of providing pest management decision-support to the farmers.

scholarly journals CONTROL OF INSECT PESTS ATTACKING TOMATO CROPS IN DISTRICT BAJAUR, KHYBER PAKHTUNKHWA

2021 ◽  
Vol 27 (3) ◽  
pp. 381-395
Author(s):  
Ali Hazrat ◽  
Muhammad Yahya
Keyword(s):  
Lycopersicon Esculentum ◽  
Tomato Plant ◽  
Insect Pests ◽  
Insect Pest ◽  
Scientific Data ◽  
Tomato Crop ◽  
Seasonal Incidence ◽  
Scirtothrips Dorsalis ◽  
Wide Range ◽  
Fruit Borer

ABSTRACT Tomato plant (Lycopersicon esculentum) is a widely cultivated vegetable crop. The plant is economically very important. To ensure a successful and economically viable harvest, it is essential that all aspects of its production to be monitored. At present, there is a limited scientific data regarding the use of pesticides in relation to the seasonal incidence of insect pests in the Bajaur district of Pakistan. This study was carried out at a local farm, where the efficacies of Flurofenafire pesticide were examined. The pesticide Flurofenafire was applied once a week to examine its efficacy. The stability of the pesticide was highly dependent on the weather. The occurrence of rain within 24 hours of spraying resulted in Aphid, Jassid, White fly, Thrips and Fruit borer infestations. Aphid infestations were observed on the tomato crop in May 2019, which peaked in July. Bemisia Tabaci infestations peaked in August. Amrasca Biguttula populations peaked in September 2019. Scirtothrips dorsalis and Helicoverpaarmigera infestations were also observed on the tomato crops and caused significant damage. The application of Flurofenafire was able to control these infestations. In conclusion the pesticide Flurofenafire was found effective against a wide range of insect pest of tomato plant. Key Words: Flurofenafire, Pest, Pesticide, Seasonal incidence, Lycopersicon esculentum

scholarly journals Evaluation of Synthetic Insecticides for the Management of Helicoverpa Armigera Mill in Tomato Production

2021 ◽  
pp. 17-28
Author(s):  
John Manu ◽  
J.V.K Afun
Keyword(s):  
Helicoverpa Armigera ◽  
Insect Pest ◽  
Tomato Fruit ◽  
Tomato Production ◽  
Insect Pest Control ◽  
Growing Seasons ◽  
Lambda Cyhalothrin ◽  
Helicoverpa Armígera ◽  
Fruit Borer ◽  
Marketable Fruit

This study was conducted to evaluate the efficacy of synthetic insecticides in managing Helicoverpa armigera Mill in tomato production. The experiment was conducted during the major and minor tomato growing seasons at the Sekyere Kumawu and Asante Akim North districts in Ghana. The experimental design was a 3 x 5 factorial randomized complete block with four replications. Four insect pest control regimes were evaluated for their effectiveness in controlling the tomato fruit borer. Three tomato varieties were used in this experiment. The results showed that, significantly, higher marketable fruit yields were obtained on the sprayed plots than the control plots. In general, the variety “pectomec” suffered the highest yield loss on the water sprayed field, followed by UC 82 and lastly, power rhino, although all the varieties suffered losses greater than 50%. This shows that none of the varieties used for this study is completely resistant to Helicoverpa armigera. Yields were generally higher in the major season (March-July) than in the minor season (September-December) for pectomec and power rhino. The best insecticides are Oxymatrin (2.4%), Lambda-cyhalothrin (2.5%) and Dimethoate (400g/l) +Cypermethrin (36g/l) in descending order. Contrarily, UC 82 had low yields in the major season than in the minor season. The study recommends that Helicoverpa armigera Mill should be controlled with pesticides to improve yields of tomato.

scholarly journals Inheritance of Resistance to Anthracnose Caused by Colletotrichum coccodes in Tomato (Lycopersicon esculentum)

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 449C-449
Author(s):  
John R. Stommel ◽  
Kathleen G. Haynes
Keyword(s):  
Lycopersicon Esculentum ◽  
Tomato Fruit ◽  
Fruit Rot ◽  
Colletotrichum Coccodes ◽  
Inheritance Of Resistance ◽  
Breeding Line ◽  
Tomato Cultivar ◽  
Breeding Lines ◽  
Anthracnose Resistance ◽  
Plant Introductions

Anthracnose, caused by Colletotrichum coccodes, is a serious ripe tomato fruit rot disease. Genetic resistance to anthracnose is not available in commercial tomato cultivars, but has been reported in small-fruited Plant Introductions (P.I.), and with lesser intensity in a number of breeding lines. Transfer of high levels of resistance from these breeding lines or P.I.s to elite materials has proven difficult. Inheritance of resistance has been described as complex with at least six loci influencing resistance reactions. Segregating populations originating from a cross between a susceptible tomato breeding line and a large-fruited breeding line (88B147) with resistance derived from Lycopersicon esculentum var. cerasiforme P.I. 272636, were evaluated for anthracnose resistance. Analysis of anthracnose resistance in puncture-inoculated fruit indicated small, but significant, additive genetic effects for resistance. Additional populations were developed from crosses of a susceptible inbred processing tomato cultivar with: 1) the resistant P.I. 272636, 2) an unadapted small-fruited resistant line developed from P.I. 272636, and 3) the large-fruited breeding line 88B147, also with resistance derived from P.I. 272636. Small additive effects identified in large-fruited material, in comparison to the resistant P.I., suggests that resistance loci have been lost during germplasm development. This is consistent with the relatively larger lesions observed in large-fruited lines derived from P.I. 272636. Positive correlations were noted between small fruit size and high levels of anthracnose resistance. Identification of molecular markers linked to resistance genes in the respective populations will be discussed.

EFFECT OF IRRIGATION AND PLANT POPULATION ON YIELD, FRUIT SPECK AND BLOSSOM-END ROT OF PROCESSING TOMATOES

1985 ◽  
Vol 65 (4) ◽  
pp. 1011-1018 ◽  
Author(s):  
C. S. TAN ◽  
B. N. DHANVANTARI
Keyword(s):  
Soil Moisture ◽  
Lycopersicon Esculentum ◽  
Pseudomonas Syringae ◽  
Tomato Fruit ◽  
Plant Population ◽  
Southern Ontario ◽  
Available Soil Moisture ◽  
Blossom End Rot ◽  
Irrigation Effects ◽  
Processing Tomatoes

Two tomato (Lycopersicon esculentum Mill.) cultivars, Heinz-2653 and Campbell-28, were grown on Fox loamy sand in the subhumid region of southern Ontario from 1979 to 1982. Irrigation increased the marketable yields of H-2653 in a dry year, 1982, but not in the other years. Irrigation substantially increased marketable yields of C-28 in 1979 and 1982. Irrigation, when the available soil moisture (ASM) level reached 50%, was no more effective than when the ASM level in the soil was allowed to drop to 25%. Without irrigation yield increased as plant population increased in normal and wet years, but not in a dry year. Blossom-end rot (BER) of C-28 cultivar was markedly reduced by irrigation. Effects of irrigation or plant population treatments on the incidence of fruit speck did not appear to be significant.Key words: Available soil moisture, Lycopersicon esculentum, Pseudomonas syringae pv. tomato, fruit speck

Determination of optimum tuber planting density in the potato varieties Pentland Squire, Cara, Estima, Maris Piper and King Edward

1992 ◽  
Vol 119 (1) ◽  
pp. 35-44 ◽  
Author(s):  
D. C. E. Wurr ◽  
J. R. Fellows ◽  
E. J. Allen
Keyword(s):  
Complex Analysis ◽  
Seed Tuber ◽  
Tuber Size ◽  
Planting Density ◽  
Potato Seed ◽  
Stem Density ◽  
Seed Tubers ◽  
Net Returns ◽  
Analysis Technique ◽  
The Cost

SummaryThirty-two experiments examining the effects of the weight and within-row spacing of potato seed tubers on graded tuber yields of five varieties were conducted on eight sites from 1980 to 1985. A complex analysis technique was used to combine these data and estimate the optimum tuber planting densities for different ratios of seed cost to small (40–60 mm) and large (60–80 mm) ware value. The same technique could be applied to any other combination of seed cost, ware size and ware value.The optimum tuber planting density decreased with increasing seed-tuber weight. Differences in optimum planting density between varieties were much greater with small (35 g) than with large (105 g) seed tubers and decreased as the cost of seed increased relative to the value of ware. As large ware became worth more than small ware the influence of increasing seed cost on the optimum density was reduced. As the value of large ware increased, net returns increased and the effect of seed cost on net returns was reduced. Mean tuber size decreased with increasing stem density at harvest and at the same stem density was lower in varieties producing more daughter tubers/stem. Changes of mean tuber size (μ) and the spread of yield across size grades (σ) with time were well described by parallel curves in different varieties. It is suggested that in future it may not be necessary to determine optimum tuber planting densities by complex experiments involving several seed-tuber weights and spacings. Instead μ and σ could be estimated from simple experiments and tuber spacings determined by comparison with control varieties.

Comparison of optical and physical measurements with sensory assessment of the ripeness of tomato fruit Lycopersicon esculentum

1990 ◽  
Vol 2 (4) ◽  
pp. 243-254 ◽  
Author(s):  
Mandy J. Hetherington ◽  
Alan Martin ◽  
Douglas B. MacDougall ◽  
Keith R. Langley ◽  
Nick Bratchell
Keyword(s):  
Lycopersicon Esculentum ◽  
Tomato Fruit ◽  
Sensory Assessment ◽  
Physical Measurements
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