Assessment of Soil Erosion and Its Impact on Agricultural Productivity by Using the RMMF Model and Local Perception: A Case Study of Rangun Watershed of Mid-Hills, Nepal

Table 5

Perceived impact of erosion on agricultural productivity.

Rank	Causes	Mean rank	Friedmann value	df	value
1	Topsoil removal	4.19	48.517	4
2	Gully formation	3.56
3	Lack of irrigation	2.92
4	Quality seed	2.33
5	Insect and pest attack	2