Colophon

Pesticides Research No. 116 2008 of fungicide application in winter wheat

Title:
Pesticides Research No. 116 2008 of fungicide application in winter wheat

Key Subjects:
Kvælstof; jord; afgrøder;

Key Subjects in Danish:
Nitrogen; soil; crops;

Abstract:
Field experiments in winter wheat were carried out in to years with varying nitrogen and fungicide doses on field with large spatial variation in soils. Soils and crops were characterised using all relevant available sensor measurements. Measurements of soil texture using EM38 and crop status using remote sensing (RVI) could explain observed variations in yields, diseases and yield gain from fungicide application. An algorithm was developed to vary the fungicide dose depending on measurements of EM38 and RVI. A test of the algorithm showed that there were only small yield gains from use of sensor-based fungicide application compared with a standard uniform dose. However, the sensor-based application reduced fungicide deposition on the soil.

Abstract in Danish:
Der er over to år gennemført forsøg i vinterhvede med varierende kvælstof- og fungiciddoseringer på marker med stor jordbundsvariation. Jord og afgrøder blev karakteriseret med alle relevante tilgængelige sensormålinger. Især målinger af jordens tekstur med EM38 og afgrødens status med telemåling (RVI) kunne forklare forskelle i udbytter, sygdomsforekomst og merudbytte for svampebekæmpelse. Der blev udviklet en algoritme til at graduere fungicidtildelingen afhængig af målingerne af EM38 og RVI. Afprøvningen af algoritmen viste, at der kun var meget små merudbytter for anvendelse af den sensorbaserede fungicidtildeling sammenlignet med en ensartet behandling. Dog blev fungicidafsætningen på jorden reduceret ved den sensorbaserede fungicidtildeling.

Series title and no.:
Pesticides Research No. 116 2008

Publisher:
Danish Environmental Protection Agency

Performing organizations:
Det Jordbrugsvidenskabelige Fakultet, Aarhus Universitet; Faculty of Life Sciences, Aarhus University; Dansk Landbrugsrådgivning, Landscentret; Danish Agricultural Advisory Service, The National Centre

Copyright:
Danish Environmental Protection Agency

Creators:
Jørgen E. Olesen, Lise Nistrup Jørgensen, Peter Kryger Jensen, Anton G. Thomsen, Jens Erik Jensen

Contributor:
Schultz Grafisk (web)

Language:
eng

URL:
http://www.mst.dk/

ISBN nr. Electronic version:
978-87-7052-701-9

ISBN nr. Printed version:
978-87-7052-702-6

Version:
1.0

Version/edition:
2008-01-29

Data formats:
html, gif, pdf, css

Inventory:
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Publisher category:
statslig