Grass tetany time is here again.

Grass tetany time is here again. For those farms having a tetany history problem the following will be of interest: Feed 1/2 ounce magnesium oxide per day per brood cow to those cows being fed rations such as silage. Where feeding is not practical (and it seldom is with beef cows) keep a mixture of half salt and half magnesium oxide before them at all times. Don’t feed other sources of salt and when on a succulent feed such as new grass or silage they will generally take enough to be effective.

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Studded Tire Performance

K. D. Bird and F. R. Haselton of Cornell’s Aeronautical Laboratory have revealed a number of interesting findings about the performance of the often controversial studded snow tires.

After collecting and analyzing experimental data on the braking, traction and cornering performance of studded tires on ice, packed snow and wet and dry bare pavements, the two researchers concluded, among other things, that:

The more studs that are used in each tire (up to at least 260) - providing that there is a minimum of 12 studs in each circumferential line - the greater the tire’s resistance to sliding on ice or snow.

On bare concrete or asphalt pavements, however, increasing the number of studs per ifre above 100 increases the stopping distance required. (Two hundred studs per tire may lengthen the stopping distance by 5 to 8 percent.)

The studs’ resistance to sliding on ice is maximum at 32 degree F. and this resistance decreases linearly as the temperature drops. There is little difference in stopping distances between a car equipped only with highway tread tires and one equipped entirely with studded tires at temperatures of 0 degrees F. and below.

Significant performance gains in an automobile’s cornering ability on glare ice are achieved with studded tires on both front and rear wheels. (For example, a car with unstudded tires in rounding a corner at 30 m.p.h. might negotiate that same cornel