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Pasture renewal required after grass grub/porina damage?

AgPest — Fri, 14 Oct 2016 21:30:08 +0000

For pastures badly affected by either grass grub or porina over winter and needing renewal, consider direct drilling. This will preserve naturally occurring diseases of these pests that are building up in the soil and which will provide long term population regulation. Leave sowing as late as possible as both pests, especially in the south, may still be feeding and could devastate establishing seedlings. Be aware that slugs and clover root weevil may also be present in damaging numbers.

For further information on either of these pests, including identification, biology, impact and control, click on the links below:

Direct drilling new pasture? Look for pests…

AgPest — Sun, 04 Sep 2016 22:15:40 +0000

If pasture establishment by direct drilling is going to be used, check those pastures for pests; especially slugs and grass grub as even low numbers can devastate young seedlings of pasture or crop plants.

Fur further information on these pasture pests, including biology, impact and control please click on the links below:

Pasture renewal required after grass grub/porina damage?

AgPest — Wed, 31 Aug 2016 22:15:34 +0000

For pastures badly affected by either grass grub or porina over winter and needing renewal consider direct drilling. This will preserve naturally occurring diseases of these pests that are building up in the soil and which will provide long term population regulation. Leave sowing as late as possible as both pests, especially in the South, may still be feeding and could devastate establishing seedlings. Be aware that slugs and clover root weevil may also be present in damaging numbers. Use of treated seed is recommended.

For further information on these pasture pests, including biology, control and management please follow the links below:

Porina & Grass Grub Damage

AgPest — Sun, 31 Jul 2016 22:43:01 +0000

Porina and Grass Grub damage is showing in areas of the lower North Island.

The only option available to protect pasture now is insecticide.

For further information on these pasture pests follow the links below:

Grass Grub and Porina damage now evident

AgPest — Thu, 30 Jun 2016 22:30:15 +0000

Grass grub and porina damage will now be evident in most areas.

Grass grub damage is indicated initially by loss of clover and subsequently by patches of pasture turning yellow. At this time of year these patches become soft under foot and are prone to pugging.

Porina damage will show as bare areas of pasture often with only weed plant species present. Conventional insecticide is the only control option likely to give control of either pest.

By now production losses have already occurred but treatment may save the affected pastures.

For further information on either of these pests please follow the links below:

Grass-grub, brown beetle larvae

AgPest — Wed, 12 Jun 2013 02:39:28 +0000