Types of Soil - Mahir River
The soil weights are named after the comparative proportion of these three distinct soil particles - sand, silt and mud.

Sandy soil: The soil that contains the amount of sand particles is called sand soil.
Polysy soil that contains large amounts of silt particles is found in poly clay.
Mud: The soil that has a large amount of mud particles, is called muddy soil.
 ![image](https://img.esteem.ws/fvk5zol9mg.jpg)
[pic source](https://pixabay.com/en/nature-outdoors-farm-summer-soil-3375247/)
To make a pond well in the management of fish farming, dehydration and sandy-dusting soil are the best. This type of soil can easily contain water. Accuracy of the pH of the soil is 5.0. The soil can be divided into 3 parts based on existing nutrients and pH. For example,
1. High productivity, (Phase dimension of 7.5.5.55 / kg, nitrogen> 50, phosphorus 6-12, carbon high> 1.5)
2. Medium productive (Ph.6 Dimensions.6.5-5.5 mg / kg, nitrogen 25-49, phosphorus 3-5, carbon high> .5-1.4)
3. Low productive (pH level <5.5 mg / kg, nitrogen <25, phosphorus <3, carbon high <.5)

The soil of Bangladesh for the cultivation of fish based on soil structure, color, pH is generally divided into 6 groups. Based on this, the classification and natural productivity of Bangladesh in the table below is given.

Parts of Varendra, Madhupur, Savar, Gazipur, Sylhet, Comilla and Noakhali, special etel, mud and sand mud are less acidic red and brown natural productivity.

2 Jessore, Faridpur, Kushtia, Pabna, Rajshahi, Dhaka and Barisal part of the petalized Atel alkaline light and brown dark gray natural productivity.

3 Mymensingh, Tangail, Sylhet, Comilla, Noakhali, Dhaka, Rangpur, Bogra, Pabna and Faridpur have comparatively more alkaline gray and dark gray natural productivity than polyester non-fibrous neutral.

4 Part of Rangpur-Dinajpur, Manikganj, Gaibandha, Faridpur and Tangail, sand and sanded silly are some of the acidic gray natural productivity comparatively less.

5 Area adjacent to the river sand is acid / alkaline / neutral gray to dusk gray natural productivity less than

6 Coastal areas: Salt and mud part are less acidic, black or ash color. Natural productivity is less.

Useful for the cultivation of profitable fish in 2 and 3 no. But there is no mention of Feni or Mirsarai? We would like to know that the soil of Feni or Mirsarai is partly in Noakhali. It is from Mirsharai's Saraykhali to the coastal Domkhali, Char Sarat, Nilchichur, Ichhalir Char 5 in Azampur, Morganj and Vrindaban Pur in the upazila union, Maulabi Bazar and Dhumghat Bridge in Fatehpur; Sonagazi Upazila on the other side of the Mahuri River. In this way the soil on the river Mahuri will be matched with the national level.

 ![image](https://img.esteem.ws/2mj1qg9crx.jpg)
[pic source](https://pixabay.com/en/composing-desert-drought-dehydrated-279862/)
There is also two types of soil in the mentioned place. Starting from Shirekhali of Mirsarai, the coastal domokhali, Char Sarat, Nilchuchar, Ichhalir Char and Sonagazi can be located outside the harsh dam and it can be included in the number two.
No.5, Awampur, Morganj and Vrindabanpur of Wichannpur Union, west of Maulabi Bazar and Dhumghat Bridge, and Sonagazi upazilas on the other side of the Mahuri river, which can be located within the pond dam and can be included in the 3rd place.

In spite of the lack of natural productivity, it is useful to cultivate profitable fish in the pond for proper management. In this case, the cost is slightly higher.
[word source](https://mbasic.facebook.com/permalink.php?story_fbid=296591894045192&id=296126107425104)