Page 24 - Oct22020
P. 24

It pays to maintain
      It pays to maintain                                                                       The Midwest Cattleman · October 22, 2020 · P24

      cover!
      cover!                          By Victor Shelton, NRCS State Agronomist/  rare occasions, especially under   livestock after removal of just the
                                                                                                              top one third of available forage
                                                                                                              is probably ideal under these con-
                                                Grazing Specialist
         I’ve not been on the road as  tive and remain in somewhat of       ideal moisture conditions and     ditions instead of the traditional
                                                                            with lots of forage present, you
       much lately and it’s been nice  a contingency plan mode. I have      can occasionally remove slight-   mindset of graze half and leave
                                                                                                              half.  You want to leave slightly
       to watch minute, daily chang- to remind myself that the next         ly more forage, but it’s generally   more behind for the same rea-
       es in things as the days shorten  drought period could be only two   best not to. Removal of too much   sons we started discussing earli-
       and the nights become cooler. A  weeks away and to keep a game       leaf area will slow photosynthe-  er and if you do so, you will nor-
       few spiny pigweeds in the barn  plan in check to help  reduce        sis and regrowth, but if only done   mally keep forages growing a lot
       lot were one of the first things  the negative impact if it occurs.   on rare occasion on only single   longer and be rewarded with a
       to catch my eye. They first quit  There are limits though.           paddocks or small parts of a pas-  little more production.
       growing, then with each addi-        What could you have done        ture, it won’t be too detrimental.   You may not have been short
       tional cool night you could see a  differently?  Sometimes  nothing,   If there is a lot of growth present,   on forages at any point and time
       darkening of the leaves and more  but for future ruminations here    removal can be misleading due to   or at least it didn’t appear that
       maroon showing. They don’t like  are a few options. Maintain soil    a fair amount of forage being laid   way, but I like to go back and con-
       the cooler weather; I don’t like  cover. You don’t want to see any   down rather than consumed. If     sider animal bite size.  To start
       the lack of sufficient moisture.  bare ground and you want a good    that happens, it may not be con-  with, how does a cow eat? If she
         If you have been diligent  dense stand of forage and resi-         sumed by the grazing livestock,
       about maintaining cover and not  due to keep the soil cool and re-   but some of it will be consumed   can, she will take her tongue
                                                                                                              and reach out with it and wrap
       overgrazing this summer — then  duce evaporation. Maintain good      by the microflora of the soil live-
       at least you are doing everything  stop  grazing  heights,  you  know,   stock  and that is                          continued on page 26
       you possibly can do to conserve  the  live leaf and stem  material   never a  bad  thing.
       moisture. I grazed a couple fields  that is left behind after a graz-  They need fed too.
       just a bit closer than I should  ing event.  That is the shortest      When we are in
       have in advance of this dry late  amount left, not the tallest. For   a timeframe of de-
       summer/early fall period. It was  most cool-season forages, that is   creasing  moisture
       supposed to rain! It didn’t. Fields  four inches so to have the short-  and especially if
       with closer to six inches of resid- est be four inches, there will be at   growth is slowing
       ual left behind bounced back bet- least one third of the forages at   down, then we need
       ter.                              least six inches or more.          to  adjust  that stop
         It would probably be dan-          Let’s think a bit more about    grazing height, leav-
       gerous if we could predict the  that last statement.  That stop      ing slightly more be-
       weather far enough in advance  grazing height is a good average      hind and not graz-
       to make a better impact on pas- guide to stick to, but there are al-  ing as close. Moving
       tures, but we can be more proac- ways exceptions to the rules. On

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