Question

why does a nursery not have fully grown plant

Answer 1

By growing in nursery, it is obvious that only the germinated seeds are shifted to main field and hence plants per unit area is maximum. This also helps in transplanting healthy plants only (in case the nursery has a surplus of plants)Since it is easy to irrigate a small area, seeds can be sown much before monsoon and hence the main monsoon can be used for watering the transplanted crop in fields.Main field is puddled just before transplanting. Thus all the weeds in the field are removed. When paddy plants are transplanted, the weeds do not compete as they have to restart from ZERO and the paddy already has a lead in the race. Water is filled after transplantation and thus in most part of the field, weeds do not germinate.Paddy plants shoot out as a single branch. Once disturbed either by crushing them or by transplanting them, they shoot out multiple branches and thus the growth is naturally increased. This is the most important reason of transplanting.

Answer 2

Nursery not have fully grown plant because in nursery seeds are shown to get small plants which can be again sown in farm, this helps farmers to cultivate their ladnd in organised and in easy way. For example paddy are first grown in nursery not in farm, because seeds of paddy are very small and it is difficult to sown it one by one or if it is down by throwing it will be costly but when pady seeds grown in nursery they grow as a plants and after sometimes they are unrooted and sown in farm. This helps farmer to sow the plants in a row with desired space between the plants.