The effect of fungicides on seed yield and disease control in Italian ryegrass.
Identifieur interne : 001043 ( Main/Exploration ); précédent : 001042; suivant : 001044The effect of fungicides on seed yield and disease control in Italian ryegrass.
Auteurs : G. Rijckaert [Belgique]Source :
- Communications in agricultural and applied biological sciences [ 1379-1176 ] ; 2009.
Descripteurs français
- Wicri :
- geographic : Italie.
English descriptors
- KwdEn :
- Fungicides, Industrial (pharmacology), Italy, Lolium (drug effects), Lolium (physiology), Methacrylates (pharmacology), Phenylacetates (pharmacology), Plant Diseases (prevention & control), Plant Diseases (statistics & numerical data), Polyploidy, Seeds (drug effects), Seeds (genetics), Seeds (physiology), Spiro Compounds (pharmacology), Triazoles (pharmacology).
- MESH :
- chemical , pharmacology : Fungicides, Industrial, Methacrylates, Phenylacetates, Spiro Compounds, Triazoles.
- geographic : Italy.
- drug effects : Lolium, Seeds.
- genetics : Seeds.
- physiology : Lolium, Seeds.
- prevention & control : Plant Diseases.
- statistics & numerical data : Plant Diseases.
- Polyploidy.
Abstract
Under Belgian climatic conditions, the incidence of fungal diseases like mildew, crown rust and stem rust is much lower in seed crops of Italian ryegrass than crops of perennial ryegrass, because of the cleaning effect of the preceding forage cut and the much quicker growing rate of Italian ryegrass. However, in some mild and warm seasons, above diseases can give detrimental effects on seed yield, so a preventive fungicide programme would be very recommended in order to obtain consistently high seed yields over the years. Six different fungicides and an untreated control were tested on two tetraploid varieties of Italian ryegrass, namely cv. Meroa and cv. Salomé (more tolerant to crown rust); one fungicide application took place at early ear emergence for all three trials (2006-07-08). Only in the 2007-trial with very severe rust pressure, the most efficient fungicides increased seed yield by 22-25 % against the control (100%) and the tebuconazol-treatment (106.6%). Yield differences could be attributed to a healthier seed crop, i.e., less withered flag leaf and to a higher thousand seed weight. As both years 2006 and 2008 had very little disease pressure throughout the season, the best treatments (Allegro and Opera) resulted in a moderate seed yield increase of 6-7% in 2006, while 2008 did not give any yield response at all between the fungicide treatments and the untreated check. Seed yield, yield components and disease development are discussed and explained in relation to the seasonal meteorological conditions.
PubMed: 20222577
Affiliations:
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Le document en format XML
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Rijckaert</name><affiliation wicri:level="1"><nlm:affiliation>Institute for Agricultural and Fisheries Research (ILVO)-Plant Sciences Unit, Crop Husbandry and Environment (T&O), Burg. Van Gansberghelaan 109-box 1, BE-9820 Merelbeke, Belgium. georges.rijckaert@ilvo.vlaanderen.be</nlm:affiliation><country xml:lang="fr">Belgique</country><wicri:regionArea>Institute for Agricultural and Fisheries Research (ILVO)-Plant Sciences Unit, Crop Husbandry and Environment (T&O), Burg. Van Gansberghelaan 109-box 1, BE-9820 Merelbeke</wicri:regionArea><wicri:noRegion>BE-9820 Merelbeke</wicri:noRegion></affiliation></author></analytic><series><title level="j">Communications in agricultural and applied biological sciences</title><idno type="ISSN">1379-1176</idno><imprint><date when="2009" type="published">2009</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Fungicides, Industrial (pharmacology)</term><term>Italy</term><term>Lolium (drug effects)</term><term>Lolium (physiology)</term><term>Methacrylates (pharmacology)</term><term>Phenylacetates (pharmacology)</term><term>Plant Diseases (prevention & control)</term><term>Plant Diseases (statistics & numerical data)</term><term>Polyploidy</term><term>Seeds (drug effects)</term><term>Seeds (genetics)</term><term>Seeds (physiology)</term><term>Spiro Compounds (pharmacology)</term><term>Triazoles (pharmacology)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Fungicides, Industrial</term><term>Methacrylates</term><term>Phenylacetates</term><term>Spiro Compounds</term><term>Triazoles</term></keywords><keywords scheme="MESH" type="geographic" xml:lang="en"><term>Italy</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Lolium</term><term>Seeds</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Seeds</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Lolium</term><term>Seeds</term></keywords><keywords scheme="MESH" qualifier="prevention & control" xml:lang="en"><term>Plant Diseases</term></keywords><keywords scheme="MESH" qualifier="statistics & numerical data" xml:lang="en"><term>Plant Diseases</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Polyploidy</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Italie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Under Belgian climatic conditions, the incidence of fungal diseases like mildew, crown rust and stem rust is much lower in seed crops of Italian ryegrass than crops of perennial ryegrass, because of the cleaning effect of the preceding forage cut and the much quicker growing rate of Italian ryegrass. However, in some mild and warm seasons, above diseases can give detrimental effects on seed yield, so a preventive fungicide programme would be very recommended in order to obtain consistently high seed yields over the years. Six different fungicides and an untreated control were tested on two tetraploid varieties of Italian ryegrass, namely cv. Meroa and cv. Salomé (more tolerant to crown rust); one fungicide application took place at early ear emergence for all three trials (2006-07-08). Only in the 2007-trial with very severe rust pressure, the most efficient fungicides increased seed yield by 22-25 % against the control (100%) and the tebuconazol-treatment (106.6%). Yield differences could be attributed to a healthier seed crop, i.e., less withered flag leaf and to a higher thousand seed weight. As both years 2006 and 2008 had very little disease pressure throughout the season, the best treatments (Allegro and Opera) resulted in a moderate seed yield increase of 6-7% in 2006, while 2008 did not give any yield response at all between the fungicide treatments and the untreated check. Seed yield, yield components and disease development are discussed and explained in relation to the seasonal meteorological conditions.</div></front></TEI><affiliations><list><country><li>Belgique</li></country></list><tree><country name="Belgique"><noRegion><name sortKey="Rijckaert, G" sort="Rijckaert, G" uniqKey="Rijckaert G" first="G" last="Rijckaert">G. Rijckaert</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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