Doug,
I remember a while back, in one of your pictures, there was an area really trampled down by your cattle showing their path around the area. In their main travel areas do you see better growth from your preferred plants, do these areas have a harder time because of compaction, or does it make no difference at all? Thanks.
It's really hard to say without seeing the exact picture, but I will give a few generalities with examples:
The longer cattle stay in one area the greater the compaction risk.
- Compaction not an issue where cattle spend <20% of the year. Most of our paddocks suffer no compaction issues.
- Compaction is evident where cattle spend > 20% of year. Long time loafing areas, sacrifice paddocks, weaning pens, and feed lots all show variable degrees of compaction.
- Any compacted area can be healed with plant roots if given enough recovery days and grazed again when compaction risk is nil and plants have fully recovered. The necessary plants for healing may come naturally or may need to be planted as cover crops. Time required for alleviation varies tremendously.
-Compaction in pasture is created more from our desire for convenience of management than of natural animal behavior under intense rotation.
-Compaction isn't a problem when there is organic matter to trample into the soil.
-Compaction is a problem when there isn't any organic matter to trample.
-You can feel compacted soil if walking on it with thin soled boots (plain jane muck boots are the best)....its either like walking on a mattress or on concrete!
The absolute best side by side example I have is the corral....it has 2 holding pens.......one north and one south....the south one is closest to road and gates thus the most convenient to keep a sick animal, feed the herd for working or keeping a water trough to be filled....I have trampled both sides to the point where they were a well mixed slurry of mud, manure, urine, animal parts, thatch and green forage annually over the years. When we excavated soil to pour the chute pad, the differences between each half was night and day....the north half had a very tilthly silt loam topsoil extending over a foot deep and earthworms numerous...it dug easily with FEL......the south half had very platy compacted soil structure starting 4" deep and extending over 12" thick without earthworms....harder to dig and mostly came out as a 'slab' with the FEL.
It is for that reason I absolutely abhor 'sacrifice areas' and 'weaning pens'!
When a continuously grazed pasture is split up into 20+paddocks the historic nutrification and compaction issue of loafing areas is nullified. The herd can no longer repeatedly go to a handful of loafing areas....instead they will spend less time on 20-40 new loafing areas.....nutrification becomes more even over space to increase soil fertility and minimize time spent in one spot + opportunity for long recovery nullifies detrimental compaction. I like to see a herd just keep on moving....adjusting paddock size with temp fence as conditions warrant.
There is no harm in 'making mud' with a cow herd. Sometimes that is a must to get native seeds/rhyzomes to germinate from deep in the soil seed bank....provided you have long enough recovery period to allow the new plants to re-establish themselves. Think about that....30 years in tame pasture under a reasonable degree of grazing management builds new topsoil....native seeds which were once at the surface when the land was first broke may now be 2-6" deep....so the 'degree of hoof massage' needed to stimulate desirable plants is not set in stone....stock density must the varied and sufficient time given to monitor succession. When Allen Williams does high stock density grazing in his flex system, recovery period starts at 90 days.
I also take advantage of letting the cattle make some mud as a seeding opportunity.....normally by placing the mineral feeder in vegetation I'd like to see disappear or become thin....then seed anything from clover mixes, switch, johnsongrass, lespedeza, jap millet, etc by hand in that area to increase plant diversity and ecosystem complexity. Deep rooted plants like switch and JG also go a long way to bust up deep compaction moreso than most tame pasture forages. Bermuda and fescue usually come back easily with 80+ day recoveries....but it will take a few committed years to get rid of weeds like buttercup, smooth doc, and hedge mustard which opportunistically colonize the same compacted, bare and/or poorly drained areas....none of those forbs are preferred forages (cattle or deer...sheep yes).