Effects of Biochar, Lime, and Compost Applications on Soil Physicochemical Properties and Yield of Pomelo (Citrus grandis Osbeck) in Alluvial Soil of the Mekong Delta

Table 6

Economic aspects of soil amendment addition.

Year	Treatment	Revenue	Total cost	Profit	Profit compared with control (USD ha^−1)
		USD ha^−1
2018	Control	7,219	3,500	3,719	—
	Biochar	9,309	5,000	4,309	590
	Lime	8,264	4,160	4,104	385
	Compost	9,240	5,000	4,240	521
2019	Control	9,585	5,000	4,585	—
	Biochar	12,270	7,250	5,020	1,301
	Lime	11,175	6,160	5,015	1,296
	Compost	12,195	7,100	5,095	1,376
2020	Control	10,230	5,500	4,730	—
	Biochar	15,465	8,600	6,865	3,146
	Lime	13,155	6,500	6,655	2,936
	Compost	15,165	8,350	6,815	3,096