Triticum araraticum Triticum araraticum Triticum araraticum (Araratian wild emmer or Armenian wild emmer) is a wild tetraploid species of wheat. "T. araraticum" is one of the least studied wheat species in the world. The "T. araraticum" species appears to have arisen from the natural hybridization of T. boeoticum and Aegilops speltoides. "T. araraticum" is similar to the domestic T. timopheevii in several ways including physical appearance, cytoplasm type and DNA content. The relationship has led some taxonomists to classify "T. araraticum" as a subspecies of "T. timopheevii". In July 1988 different lines of "T. araraticum" were studied using the C-banding method revealing
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