As I write this the last week of September, it is certainly drier than normal. This provides good conditions for grain harvesting but slows growth on forages. I, personally, have not had any rain, only teasings for over a month. Stockpiled forage growth has really slowed down and regrowth on rotated pastures has come to a sudden halt.
I’m still banking on some rain in the near future and hopefully in time to provide sufficient moisture for fall growth. At this time, I would not recommend grazing everything down to the nubbins – nor would I ever. Maintaining enough leaf material and cover to slow further evaporation and collect dew while maintaining the solar panel, usually at least four inches of growth for most cool season forages, will help spur more regrowth once moisture is replenished. Without that reserve, plants will have to rely on root reserves for new growth and that will take more time and possibly slow future production.
What pastures really need under these conditions is rest. If we don’t get the rain needed, what forage is there is not going anywhere and it could possibly be grazed later this fall, ideally after going dormant with less detriment for future growth. It is under these circumstances that we need to strongly consider what else could be grazed to allow that needed rest for pastures.
If you have late-summer planted annuals such as oats and brassicas (such as turnips), then those could be grazed if there is enough growth on them. That growth is going to be dependent on when they were planted and the amount of moisture present. If I was low on pasture, I wouldn’t hesitate to start grazing them at even 10 to 12 inches, perhaps even shorter.
If you have any summer annuals that could be grazed, then I would graze those first, especially anything that could potentially have prussic acid poisoning issues after frosts. Those potential problem plants could include sudangrass, shorgum-sudan and even Johnsongrass. Those are best grazed prior to any frosts and may even be an issue in frost pockets. Those wilted plants, whether from stress or frost/freeze, should always be avoided by grazing livestock. However, once killed by freezing conditions, they are generally safe to graze again about two weeks later after drying down. Millets and certain genetically bred varieties don’t have the prussic acid poisoning issue.
Most of the summer warm season annuals stockpile fairly well for late grazing especially when grown with a grazing turnip. The two complement each other and keep the rumen better balanced than individually.
We are well into fall harvest, specifically corn. Grazing stalks can be a valuable tool for producers trying to stretch out fall pasture and/or reduce early hay feeding. One of the first advantages achieved with grazing corn stalks in fields is nutrient retention. Most nutrients consumed are readily returned to the field and usually in a more available form than before. If stalks are “strip” grazed (allocated out in days or weekly intervals) nutrient distribution is very good and fodder quantity and quality being grazed will be a little more stable from day to day. If there is a lot of corn (grain) on the ground, then strip grazing is really important to greatly lower the risk of foundering. I don’t see this as too much a problem this year unless you have a lot of down corn or where spillage from loading areas occurs.
Source: usda.gov
Photo Credit: USDA
Categories: Illinois, General