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ADJUVANT ACTION NO. 107
06/04/2007
Newsletter ARMA

More ARMA news


INCREASE THE EFFECTIVENESS OF T1 FUNGICIDES

  • T1 sprays are applied at emergence of leaf 3 (Growth Stage 31/32) in order to control foliar diseases, particularly Septoria, on emerged leaf 3 and provide protection for leaf 2.
  • Leaf 2 contributes around 8% to grain yield, with leaf 3 adding 23% so keeping these leaves free from disease is essential in order to protect yield.
  • Triazoles are the key fungicides at T1, where doses between half and three-quarter rates are used. If eyespot or mildew is a particular risk, a specific spray should also be applied.

ARMA WILL INCREASE THE EFFECTIVE RATE OF TRIAZOLES

Despite drift in their field performance, triazoles in combination with chlorothalonil will continue to form the backbone of most fungicides programmes at T1. But they need to be used at an appropriate dose and as protectants.
ARMA has been shown in both trials and widespread commercial usage to enhance the performance of all triazoles, traditional and new, and when used in combination with chlorothalonil.
In 12 trials used with Proline & prothioconazole + spiroxamine mixtures, ARMA gave an average response of 0.39 t/ha, worth £35/ha, giving a return on investment of 14:1 (see below).

Extra Yield Response - Prothioconazoles + ARMA

P/S - prothioconazole + epiconazole

ARMA is able to produce such consistent results by increasing the effective rate of the fungicide, especially when used with Proline, Opus, prothioconazole + spiroxamine mixtures and in combinations with chlorothalonil, as illustrated below.
ARMA in mix with T1 fungicides helps to retain and spread the fungicides onto the leaf surface, improve the placement of fungicides on the plant and help rapid penetration into the plant where it is needed.

Septoria tritici Control - Opus + ARMA Septoria tritici Control - Proline + ARMA

 

 

Rate l/ha (% full dose) • Average over 3 assessments
CAU Kiel University - Winter Wheat

Yield Effect - Fungicides + ARMA

Unt.: 7.12 t/ha
LSD Yield: 0.965 t/ha

T1: GS 32, 29th April
T2: Proline 0.32 l/ha + Comet 0.25 l/ha, GS 45, 26th May
T3: Amistar 0.25 l/ha + Caramba 0.4 l/ha, GS 65, 17th June


© Interagro (UK) Ltd 2005, 2006, 2007. All trade marks acknowledged. READ THE LABEL BEFORE YOU BUY. USE PESTICIDES SAFELY