Question : The organic horizon is generally absent from agricultural soils because tilling, e.g., plowing, buries organic matter. Why is an organic horizon generally absent in desert soils?

Question : The organic horizon is generally absent from agricultural s

1.	Question : The organic horizon is generally absent from agricultural soils because tilling, e.g., plowing, buries organic matter. Why is an organic horizon generally absent in desert soils?
Answer» Solution :(i) O-Horizon (Organic horizon) Consists of fresh or partially decomposed organic matter. (ii) `O_(1)` - Freshly fallen leaves, TWIGS, FLOWERS and fruits `O_(2)` - Dead PLANTS, animals and their excreta decomposed by micro-organisms. (iii) Desert SOIL has very little water to support a large community of plants and animals. (iv) Therefore the formation of O-Horizon is very negligible or absent in dessert soil.