Macalister Demonstration Farm

Dairy Research Farm demonstrating best management practice

 

Macalister Demonstration Farm

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Gibberellic Acid & Nitrogen Fertilizer

Nitrogen Fertiliser and Acid Pasture Trial

"Gibberellic Acid"The objective of the projects on an established grazed flood irrigated, perennial ryegrass dairy pasture was to:

  • compare the effectiveness of Easy N®, Green Urea™, and granular urea;
  • with and without Gibberellic Acid (GA);
  • assess effectiveness of Easy N at 3 different rates

Green Urea was shown to be the best option for growing extra pasture dry matter.  It can produce a large extra quantity at an acceptable price per tonne. The periods in which Green Urea most outperformed conventional urea (based on $/t extra grass), was following applications in September, October, November and January.

When comparing the cost of the extra dry matter produced by Green Urea and Urea over the seasons (462 day period) Green Urea seemed to be the most cost effective overall if used for every application.

GA only increased dry matter production when nitrogen was also applied. It was also found there is some antagonistic relationship GA and Green Urea suggesting some interaction between the modes of action of these products.

Easy N gave satisfactory yield results but was not as effective as Green Urea.

  • Information sheet 7 Pasture response to Gibberellic Acid & Nitrogern Fertilizer Dec 09

Latest Publications

The MDF IoT Project: Introduction

December 29, 2020 By MDF

MDF Fortnightly Update 533

December 29, 2020 By MDF

MDF Fortnightly Update 532

December 29, 2020 By MDF

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About the MDF

The Macalister Demonstration Farm, formerly the Macalister Research Farm, is a farmer-owned co-operative established on April 13th 1960. A collaboration between dairy farmers of the MID and the Department of Agriculture at Maffra resulted in the … Read More

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