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I nfluence of conservation tillage and nutrient rate on the internal Fusarium infection of winter wheat. Attila Stingli Szent István University, Institute of Crop Production, Gödöllő Dr. Árpád Bokor University of Kaposvár, Faculty of Animal Science, Kaposvár Mária Kondor-Jakab
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Influence ofconservation tillage and nutrient rate on the internal Fusarium infection of winter wheat Attila Stingli Szent István University, Institute of Crop Production, Gödöllő Dr. Árpád Bokor University of Kaposvár, Faculty of Animal Science, Kaposvár Mária Kondor-Jakab Central Agricultural Office, Budapest
The aim of the research • Investigate the effects of differentconservation tillage methods and nutrient rates on the internal Fusarium infection of winter wheat
The soil tillage experiment • Place: SZIE GAK Kht. Józsefmajor Experimental and Training Farm • Date of setting up: Sep. 2002 • Area of investigated plots: 273 m2 (13 m x 21 m) x 24 ∑ 6552 m2
Tillage methods: • Ploughing 26-32 cm (control) • Direct-drilling • Shallow cultivation 12-16 cm • Mulch-leaving cultivation 16-20 cm • Shallow disking 16-20 cm • Loosening + disking 40-45 cm + 16-20 cm
Nitrogen 2X Nitrogen 3X Stingli A. Stingli A. Ploughing Cultivator Stingli A. Stingli A.
Layout of the experiment 2006, Józsefmajor 13 m 0 X 21 m 1 X 2 X 3 X 166,4 m 0 X 1 X 2 X 3 X 0X=0 kg N a. s. 1X=34 kg N a. s. 2X=68 kg N a. s. 3X=102 kg N a. s. 1. 2. 3. 4. 20,8 m
Circumstances • Fertilizing: 22nd March, 2006. (3x, 2x,1x, 0x) • Precipitation: March 60 mm April 35 mm May 110 mm June 92 mm 5th year of winter wheat monoculture, catch crops (pea, mustard, rye)
Precipitation in May-June, 2005-2006 (OMSZ) May 2005 Scale: 30-150 mm Ave.:50-70 mm Diff.:-10-15% May 2006 Scale: 60-180 mm Ave.: 80-100 mm Diff.:+ 5% June 2006 Scale: 60-200 mm Ave.: 100-120 mm Diff.: +20% June 2005 Scale: 20-160 mm Ave.: 60-80 mm Diff.:-25-30%
Phytopathological investigation • prior to harvest 20-20 ears/plot, threshing • 100-100 seeds/plot (∑ 2400 seeds) • Laboratory of Phytopathology of former National Institute for Agricultural Quality Control, („OMMI”) • filter paper-frosting method (ISTA)
previous to investigation seeds have been disinfected with 2% NaHCl solution • seeds have been placed into Petri dishes containing three plies of wet filter paper after a thorough rinse with distilled water Stingli Stingli Stingli
3 days of dark incubation at 20°C, 5 hours of dark incubation at -20°C and 7 days of 20°C incubation under alternating lighting followed Jakabné
infection: when conidia embedded into the mycelium occurred Stingli Stingli
Results • the effect of tillage method and N rate, and interactions were investigated • treatment means were compared using alpha of 0.05 for significance in Tukey post hoc test SAS 9.1 (2004) program STAT module
Results • interaction of nitrogen rate and tillage methodwas not significant (P=0.1223) • nitrogen ratedid not affect the internal Fusarium-infection of seeds significantly (P=0.7805) • tillage method influenced Fusarium-infection(P=0.0020)
Fusarium infection of winter wheat seeds at harvest (Pest County, 2005-2006) Dr. Attila Cs. Tóth – Agricultural Office of Budapest and Pest County, Gödöllő
Summary • tillage method had significant effect on internal Fusarium-infection • beneficial biological effect of disking under certain conditions might be presumed • investigations are to be continued on Fusarium selective medium
Acknowledgements • Dr. Prof. Márta Birkás, sustaining field experiment • Mária Kondor-Jakab and Dr. Pál Békési, phytopathological evaluation • Dr. Árpád Bokor, statistical analysis This research is supported by the Hungarian National Scientific Foundation (OTKA-49.049 and F046.670), KLIMA-05 and NKFP-6/00079/2005 programs and SZIE GAK Kht. Józsefmajor Experimental and Training Farm