Dead spots in grass

valtra8150

i was walking through the silage field that i closed off from the cattle about a week ago and i noticed spots of dead grass, some are very big they are usually round some have a diamature of 4/5 foot and some have bearly a foot, ive no manure or slurry put on that field this year im planning on putting maure on this week but would like to find out what them spots are if anyone could please help

pakalasa

I notice if cattle pee in one spot then it can burn it up if the weather is very dry. Usually when the rain comes then, it goes the other way, becoming lush green grass. 5 to 6 ft is a lot of pee though.:D

Grecco

I have the same thing, very puzzling. I wonder could it have been acid rain. We had a spell of rain from the East a few weeks back

valtra8150

ya i was thinkg acid rain as well but why would it be in only one spot

DMAXMAN

could be a combination of frost and p..s too. was some hard frosts around here last week and any grass walked on etcgot badly singed.

arrowman

Could also be leatherjackets

see here http://www.dowagro.com/ie/grass_bites/leatherjacket/

theMountain

Had the same problem in March, dug a hole and they they were -- Mr leatherJacket !. Sprayed whole field Trigger from DHM. 80e/5lt

valtra8150

what was the name of the spray you used, should i kill of the grass and plough? and use that spray that you used

theMountain

I just ran a chain harrow through the field, then sprayed with an insecticide that has Trigger written on the container, made by DHM Agrochemicals in Dublin. Shook a bit of grass seed & fertilizer in the patches and gave it a rolling. Thats was my solution anyway.

ptrlaurent

They may be caused by some machine leaking petrol or diesel onto the ground..

valtra8150

no its deffo not that, there hasnt been a tractor in that field sence silage last year, nd there was a few small dead spots in it last year but not as many and now

basilbuster

More than likely pasture scorch caused by high nitrogen/urea content in the cattle urine. Seen it a few times but seems to be worse this year with the dry hot weather.

valtra8150

how can that be fixed

Figerty

Had something like that a few years ago. It was in August and there was alot of lightening nearby, the static fried my computer so it must have been close. Came back in spring to find a bare patch about 6-8 feet in diameter. I wondered was it where the lightening grounded.

PMU

urea in urine is burning it