Neha takes four pots of soil, i.e., pot I, pot II, pot III, and pot IV, and adds equal amounts of manure to each of the pots. She then takes some gram seeds and spreads them on the surface of soil in pot I. In pot II, she sows the seeds at a depth of 10 cm from the soil surface. In pot III, she sows the seeds at a depth of 1 cm from the soil surface, while in pot IV, she sows the seeds at a depth of 20 cm from the soil surface. She then waters the pots regularly.
The seeds in which pot have the highest chance of germination? Why?
Answers
Answer:
Very little growth in A but lot of growth in B and C
Explanation:
Manure is an organic substance produced by the decomposition of plant and animal wastes in the presence of microorganism and used as fertilizers. Thus, the fresh manure contains decomposing bacteria along with active digestive enzymes. These enzymes contribute to the faster heating of the manure which accelerates the decomposition of organic materials by the soil microorganisms. The end result of better decomposition of organic material is faster nutrient release to the plant. When urea is placed on the surface of the soil, a chemical reaction takes place that changes the urea to ammonium bicarbonate. Urea should be mixed in with the soil for maximum effectiveness. For plants that love acidic soils, urea is one of the top fertilizers for acidifying soils. Hence, seeds will grow most in pots B and C.