The aim of one part of the POMO project is to study if it is  possible to estimate the migration of insects beforehand by adding meteorological information to the decision making

Markkula, Irmeli

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Insect trapping: a field experiment with rotating tow-nets and yellow sticky papers was done. Insects and all relevant meteorological data including weather radar and satellite data was collected. All the catches were photographed, identifyid and stored. Yellow sticky papers: sticky papers were located in a circle of about 20-60 kilometers from the polarimetric radar in Kumpula. Papers were examined whenever FMI predicted a migration was on its way.

Lygus bugs, flea beetles and bird-cherry aphids were the most common insects on traps in May.

Lygus bugs and flea bettles were probably domestic and bird-cherry aphids migrated

Organic Eprints

Forecasting Rhopalosiphum padiin  Finland and experiences of POMO-projectIrmeli MarkkulaNJF Seminar 402 October 9.-11.10.2007Rhopalosiphum padi• the most importantaphid species on cereals• great differences in annual occurrence• winter-egg counts• suction trap catches• aphid monitoring in cereal crops with yellowsticky trapsCounting the winter eggs• the eggs are counted from the same 3-5 trees every year near the fields• 20-30 twigs (0,5 m) are collected fromevery tree• the eggs are counted from 100 buds/tree• the probable mortality is deducted fromthe amount of eggsMortality values• Mortality values:• 65 % the coastal areas of southernFinland• 75 % the coastal areas of southernOstrobothnia• 90 % the coastal areas of northernOstrobothnia• 55 % central Finland Susceptibility to risk• coastal area means the zone of 0-80 kilometers from the coastline• eggs <15/100 buds; no risk• eggs 15-40/100 buds; damage is possible• eggs > 40/100 buds, the risk is highRhopalosiphum padiRhopalosiphum padiPOMO -project• POMO = Multi-scientific applications of polarimetric weather radars, POMO• polarimetric radar: it is possible to sort out different forms of rain (water, wet snow, snow, hail, freezing rain) and nonmeteorological targets (insects, birds, sea clutter etc.)The aim of POMO WP 7• The aim of POMO WP 7 is to studyif it is possible to estimate the migration beforehand by addingmeteorological information to the decision makingMost harmful insectsdiamondback moth coloradobeetle bird-cherry aphidleaf hoppers Lygus bugs flea beetlesInsect trapping• A field experiment with rotating tow-netsand yellow sticky papers was done• insects and all relevant meteorologicaldata including weather radar and satellitedata was collected• all the catches were photographed, identifyid and storedRotating tow-net• Five rotating tow-netson Jokioinen-Viikkiline• One tow-net in Kumpula• All tow-nets wereexamined twice a week from the middleof May to the end of JuneYellow sticky papers• sticky papers werelocated in a circle of about 20-60 kilometers from the polarimetric radar in Kumpula• papers wereexamined wheneverFMI predicted a migration was on itswaySome results• Lygus bugs, flea beetles and bird-cherryaphids were the most common insects on traps in May• Lygus bugs and flea beetles wereprobably domestic and bird-cherry aphidsmigratedAaltojuovakirppaTorro, Tammela-505101520253010.5. 14.5. 16.5. 21.5. 24.5. 28.5. 1.6. 4.6. 7.6. 11.6. 14.6. 18.6. 21.6. 25.6. 28.6. 2.7.PVMKelta-ansa-200020040060080010001200ViirihaaviKelta-ansaviirihaaviInsect mass migration from SE/S/SW 27.5.2007Migrating aphids coming from Estonia 29.5.20071 17 13:00 1.6. 14:30 30.5. 06 V07060104 3 13:20 1.6. 13:30 28.5. 05 K070500912 91 12:30 1.6. 28.5. 19 K071900530 73 12:30 1.6. 28.5. 19 K0719004166 4 15:45 1.6. 10:00 27.5. 04 V070400711 18 14:45 28.5. 12:15 26.5. 17 K071700119 49 13:10 28.5. 14:20 26.5. 16 K071600220 20 13:10 28.5. 14:20 26.5. 16 K071600129 279 12:00 28.5. 13:00 24.5. 19 K07190039 148 12:00 28.5. 13:00 24.5. 19 K071900218 189 12:00 28.5. 13:00 24.5. 19 K0719001fleabeetle R.padi time date time date Place TrapRemoval RemovalThank you!

Forecasting Rhopalosiphum padi in Finland and experiences of POMO-project

NJF Report • Vol 3 • No 5 • Year 2007NJF Seminar 402Virus vector management  Kristianstad, Sweden, 9-11 October 2007 Nordic Associationof Agricultural ScientistsForecasting Rhopalosiphum padi in Finland and experiences of POMO-project  Irmeli Markkula MTT Agrifood Research Finland  Rhopalosiphum padi is the most important aphid species on cereals. There are however great differences in its annual occurrence. The prediction of the abundance of bird-cherry aphid comprises winter-egg counts, suction trap catches and aphid observation in cereal crops. Counting the winter eggs of bird-cherry aphid from the twigs of Prunus padus is made in late autumn from the same trees annually in different parts of Finland. The twigs are collected from 3-5 bird-cherries at one site. The eggs are counted from one hundred buds per tree. The probable mortality is taken off from the amount of eggs. The probable mortality changes from 55% in inland areas to 90% in the coast of North Ostrobothnia. The coastal area means here the zone of 0-80 kilometres from the coast. Weather data is not included in the forecast. This method gives an reliable estimate of the size of the domestic bird-cherry aphid population in the spring. Yellow sticky traps are used to determine the real field situation. Additionally three suction traps in Viikki, Jokioinen and Tyrnävä, as well as the weather radar of Helsinki university registrating insect migration are used to  monitor aphids. Field monitoring of the above mentioned pest is used to evaluate the reliability of the forecast. POMO (Multi-scientific applications of polarimetric radars) -project Besides aphids there are a lot of insects that can cause considerable damage to agriculture. Some of the insects have very local habitat, some migrate. The using of pesticides can be optimized if it would be possible to estimate the timing of the maximum appearance. The aim of one part of the POMO project is to study if it is possible to estimate the migration beforehand by adding meteorological information to the decision making. With the knowledge of life span and meteorological conditions a prototype system will be developed and tested for forecasting and warning of insect migration. The project is a cooperation of MTT, University of Helsinki and FMI. The most harmful and numerous insects have been selected (aphids, cabbage moths). A theoretical study of the life span and meteorological conditions effecting migration of the insects was made. Then a field experiment with insect traps was made. The catch network covered most of Southern Finland. Some of the traps were collected twice a 49week from middle of May to the end of June. Some were collected during periods of favorable migration conditions according to the ” insect weather” forecasts and warnings from FMI. Insects and all relevant meteorological data ( weather radar and satellite data) was collected. The field experiment will be analyzed in the autumn.    50

Forecasting Rhopalosiphum padi in Finland and experiences of POMO-project

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