Manpriya Chopra
In this 20th century, with the increasing population demand of food also enhances. To cope up with the rising demands, various techniques are used to increase productivity of crops. The major cause that decreases the productivity of crops is weeds. Weeds are considered as unwanted plants that interferes the normal growth and development of plant by obtaining useful nutrients from soil, competing main plants for space etc. Commonly growing weeds are Chenopodium, Amaranthus, Cannabis, Medicago etc. They decrease the yield of main crop also. To get rid off from weeds, certain weedicides are used that decrease the growth of weeds, but they may also affect soil, health of the organisms that consumes it after harvesting. So basic practices used by farmers, now a days is mulching. Mulching is a treatment that is given to crops to protect it from weeds. In this treatment, soil is covered with a substance (known as mulch either organic or inorganic) and weeds do not get proper conditions to grow. It suppresses the growth of weeds by covering the top layer of soil and thus weeds don’t get proper conditions to germinate. Two types of mulches are seen exclusively in the fields, organic mulches and inorganic mulches. Organic mulches include bark, dry leaves, saw dust, newspaper, ash etc. while inorganic mulches include plastic mulches (black plastic mulch, red plastic mulch etc.). The type of mulch used in crop depends upon the type of soil and weather climates of the area [1].