source;https://bangladeshtimes.com/krishi/article/13111
The places of cultivation are getting smaller day by day.It is difficult to find a place where people can plant trees.So there is no alternative to roof for urban people to meet the needs of hobby garden or their own family.
If you have a desire and love for trees, you can use the roof space to fulfill your hobby of gardening.For this you need to know the method of planting trees on the roof,selection of good varieties of trees suitable for roof gardening and other care issues.
This is considered to be an easy method as it can be easily moved from one place to another.The size of the tub is usually not very good for fruit trees.Fruit trees can be planted in large tubs.
In that case large tubs made of cement can be used. Adequate amount of organic manure should be used for tub cultivation.For a tub of size 16 inches to 18 inches,organic manure as well as 100 g TSP and 50 g MOP fertilizer should be well mixed and left for 10 to 12 days.Then the tub needs to bbetter
led.Today most people grow orchards on the roof in a half-drum manner.A hole should be made in the bottom of the half-drum. Pieces of brick should be placed in the holes;The top of the drum should be covered with the first 1 inch of khoya or suraki and the top with an inch of organic manure or rotten dung.This will allow excess water to drain out easily.
In addition to organic fertilizer,200 g TSP, 100 g MOP can be used in each drum.Keep in mind - vegetables, even small tubs or pots for flowers.But in the case of fruit, the bigger the pot / drum, the better
Permanent beds are a modern method.
Before gardening on the roof,the roof should be specially finished with net welding.In order to make a permanent bed system, 1.5 feet high walls on both sides of the 2 feet width around the roof should be given a net finish of 3 inch masonry.
Then in the middle of the empty space, first one inch of brick suraki or khoya, then the next one inch of dung manure,the remaining part is filled with a mixture of 2 percent soil and 1 part dung to make a permanent bed.Excess water, fertilizer should be kept in a proper way.
When gardening on the roof, it is important to make sure that the tree is not large.Hybrid varieties or pen trees can be planted in small size trees to get more fruits. Different hybrids of mango or pen varieties like Amrapali and Mallika varieties of Mango,Apple Cool, Guava, Lemon, Papaya, Olive, Mango, Karamcha, Sharifa, Ata, Pomegranate, even Banana can be planted.
Also pen olive, sweet olive of Thailand, pen sherifa, pen palm, pomegranate, strawberry, baukul, apple, coconut, litchi, red jamrul of Thailand, green drop jamrul, apple jamrul, grape guava, Thai guava, falsa, Kamranga of twin pens, and even corals of the Kerala draft species can be cultivated.
Since it is produced in a limited size, in a limited space, extra care must be ensured and care must be taken in various care. Caution is especially important when applying fertilizers. Because if the fertilizer is less, if it gets on the tree, the tree will die, and if it is not in the right amount, it will suffer from malnutrition.