2. What are the drawbacks of seeds being unevenly distributed in a field ?
3. Why is the use of biopesticides encouraged over chemical pesticides ?
What is muching and its advantages ?
Answers
The drawbacks of uneven distribution of seeds in a field, while sowing, are: They will compete for water, nutrients and sunlight that result limited growth. If they are sown far apart, it will result in the wastage of field area.
Chemical pesticides are made from harmful chemicals which damages the crops, and decreases the crops nutritional value as well as it also degrades the soil and the soil looses it's fertility. ... Thats why it is encouraged to use bio-pesticides.
The mulch stops the hot, drying sun and winds from penetrating the soil and thus conserves soil moisture and coolness. The layer of mulch also protects the soil from erosion, caused by wind and heavy rains. Mulching helps soil fertility. Mulch materials contain minerals and plant nutrients.