With correct rotation and strategic use of nitrogen I have seen winter
(July) Growth rates consistantly in excess of 40 kg/dm/ha. Frost and soil
temp are no excuse for low growth rates. While they do have an effect they
only play a small roll in overall pasture performance.
----- Original Message -----
From: "leon" <leon@grazinginfo.com>
To: <vicdairy-l@unimelb.edu.au>
Sent: Sunday, July 02, 2006 6:18 PM
Subject: Winter yields.
>
> On 2/7/06 6:31 AM, "Frank Tyndall" <ftyndall@ozemail.com.au> wrote:
>
>> I think we tend to blame low soil temp unfairly for low growth in winter.
>> It obviously has an effect on growth, and will reduce it to near zero if
>> the grazing rotation is too short and the previous graze height too
>> short. Last winter I saw 60kg DM per day growth rate at Maffra. Annual
>> ryegrass, great soil moisture and nutrient, 60 days since grazing, and
>> residue at previous grazing about 5cm.
>
> Id 5 cm is 1,200 kg DM/ha, and 60 times 60 is 3,600, plus 1,200 = 4,800 at
> the next grazing.
>
> Is this correct?
>
>
> Best wishes,
>
> Vaughan Jones
> Hamilton
> Waikato
> New Zealand
>
>
>
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