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Agroforum Extra 26.

AGAIN ABOUT RAGWEED

What do we know about ragweed?
(Dr. Imre Béres, Dr. Gyula Berta, László Hoffmann, Zsuzsanna Hoffmann Pathy, Dr. Gabriella Kazinczi, Róbert Novák)
This article summarises and partly updates the papers published earlier in Agrofórum in connection with ragweed and gives the answers to the most frequently asked and most important questions.

Means of chemical control of ragweed in the field
(Zsuzsanna Hoffmann Pathy)
The attention paid to achieve efficient and complex control of ragweed has not been sufficient in the past few years and decades, though appropriate products have not always been available. This is why ragweed is widespread in the whole territory of Hungary. Ragweed can be suppressed in cultivated fields only if herbicide use is properly considered. The specialist of the Plant Protection and Soil Conservation Directorate of the Agricultural Office of County Somogy supports this also by presenting the list of products registered for use in the particular crops.

Do we have new information about the spreading of ragweed and its adverse effects? Report
(Dr. László Bódis)
We asked dr. Anna Páldy, deputy director of the Institute of Environmental Health about the recent knowledge on ragweed, the spreading of this weed and adverse effects. She, at the same time, also manages the Aerobiological Network of the National Public Health and Medical Officer Service.

Ragweed pollen dispersal in 2007 compared to previous years’ data
(Dr. Anna Páldy)
The staff of the Aerobiological Network of the National Public Health and Medical Officer Service carried out a survey at 19 stations in 2007 to monitor pollen and spore concentration of 32 plants and 2 fungi in the air. The article summarises previous year’s data on the pollen concentration of ragweed among the particular atmospheric allergens in the light of earlier years’ records.

Legal means for suppressing ragweed infestation
(Dr. Orsolya Vercseg)
Three years have gone by since the legislation concerning the obligation for ragweed control and the related official procedures have been changed. It cannot be declared that the occurring problems have fully been solved during the elapsed time, but it is true that the number of official measures taken during 2005-2007 is much higher than earlier, and it is a fact that the pollen concentration in the air has decreased. The overall area infested with ragweed in the country has become smaller. Considering that “ragweed season” starts again soon, it is especially justified to think over what kinds of official measures – at the very worst, judgement at the court – can land owners, users and growers count on in a given case.

IN THE FIELDS AND ORCHARDS

About pest management in spring barley
(Péter Hertelendy)
The author provides an overview of the most important diseases of spring barley.

Yield prospects in cereals and rapes for the EU-27
(Sándor Oravecz)
The Joint Research Centre (JRC) of the European Commission (Ispra, Italy) published its first yield evaluation for the EU-27 member states for 2008 at the end of April. It was prepared based on the meteorological data of the period between 11 November 2007 and 10 April 2008. You may get to know the forecasts for Hungary by reading the article.

SERGOMIL-L 60 – the canon of cereals (x)
This is Summit-Agro’s offer for plant conditioners in field and horticultural products.

Is in-crop protection of sunflower diseases cost-efficient?
(Zoltán Papp)
The article informs on sunflower diseases and the experience about controlling them.

Weed control practice in sunflowers and maize at Tura. Report
(Attila Kosztolányi)
We talked with József Lukács, the crop production manager of Galgamenti Agricultural Cooperative in Tura about weed control in sunflowers and maize. We were focusing on the weed control practice in sunflowers based on post-emergence ragweed control.

Hamsters at population increase in county Békés
(László Vasas)
It happened already in years 2005-2006 that there were signs of population increase of hamsters in the central and southern parts of county Békés (south-eastern Hungary). Last year reports arrived from various parts of Hungary about the increasing damage by the pest. In connection with this, the specialist of the Plant Protection and Soil Conservation Directorate of the Agricultural Office of County Békés gives an account of the control options.

Nutrient supply in spring for winter wheat with Genezis fertilizers (x)
Nitrogénművek (“Nitrogen Works”) Plc. recommends Genezis fertilizers for nutrient supply of winter wheat in spring.

Under the magnifying glass… (43) HARDI COMMANDER TWIN FORCE – a field sprayer with airbag
(Dr. György Dimitrievits)
This part of the series puts HARDI COMMANDER TWIN FORCE, a field sprayer with airbag under the magnifying glass. The article gives an account of the most important technical characteristics, structure and operation of the sprayer.

Protecting fruit trees in summer
(Dr. Klára Véghelyi)
Fruit orchards make us going on carrying out plant protection operation in summer, too. The most important job there is to observe symptoms, determine the causing agent and diagnose the case. The pesticides suitable for control and insect traps are summarised in tables contained in the appendix.

The role of a biological control agent, Bacillus thuringiensis in integrated pest management
(Gyula László)
Products with active substance of Bacillus thuringiensis (Bt) are not unfamiliar for plant protection professionals, because they have been present on the market also in Hungary for several decades. In spite of all these, BT products are surrounded by a certain mystery, although in the countries of environmental concern the application of such active substances has been increasingly spreading. You can get acquainted with the active substance of BT products, their mode of action, selectivity and the possible uses in integrated and conventional pest management.

About sulphur as a plant nutrient
(Dr. István Terbe)
The author draws the attention to returning sulphur as a plant nutrient to the soil. We may get to know the causes of sulphur deficiency, the symptoms of deficiency, the sulphur demand of crops and the options for sulphur supply.

An evergreen topic – application technique
(Dr. György Sárospataki)
Application technique – the way of targeting the active ingredients – has a decisive role in the efficacy of the control. The article informs on the most important requirements of the performance.

Contravention of regulations in the sales, distribution and use of pesticides
(Dr. Zsolt Mike)
The “new” plant protection act published in 2000 and the related decrees on its implementation have basically changed the conditions of the sales, distribution and use of pesticides in Hungary. The provisions of the law place a big responsibility on pesticide retailers and wholesalers, plant protection professionals, users and growers. See the details in the article.

TOPPS programme for the protection of waters
(Dr. Zoltán Ocskó)
It was concluded from surveys that pesticide operators and users pay little attention to good plant protection practice and the necessary equipments are lacking. This leads to the occurrence of serious point source pollutions through which a significant part of pesticides reaches waters. The TOPPS programme, launched in 2005 wishes to change this situation to achieve that point-source pollution of our waters could decrease within a reasonable time. The article presents the wider scope of the message and one of the preliminary surveys conducted. Furthermore, we may get to know that a guideline will be published for informing growers in order to implement best plant protection practice.

Written anno…
(Dr. Péter Inczédy)