Clackers cereal Clackers cereal Clackers was the name of a breakfast cereal that the General Mills Corporation manufactured and marketed from 1968 to 1973. Noted primarily for being promoted through TV commercials in which a box of the cereal would suddenly appear and interrupt some other activity, Clackers was a wheat-based breakfast cereal whose flavor was intended to be similar to that of graham crackers. Each individual piece of the cereal was almost large enough to fit onto a teaspoon, and the shape of a typical piece resembled a small gear with a hole in the center. Pre-sweetened, promoted as being nutritious,
Crop residue whereas cereal straw would reduce next year's soil supply of available nutrients. Over time, the nutrients fixed by soil microbes and humus are released and available to crops. Nutrients from residue are not fully recovered by crops. Just like fertilizer nutrients, nutrients released from crop residue into the soil are susceptible to losses such as leaching (N and S), denitrification (N), immobilization (N, P, K and S), and fixation (P and K). The efficiency of nutrient uptake by crops from fertilizers or residue release is generally thought to be similar. For example, about 50 percent recovery of N in the