Low cost maize stover biochar as an alternative to inorganic fertilizer for improvement of soil chemical properties, growth and yield of tomatoes on degraded soil of Northern Uganda

Table 2 Costs of treatments and production of tomatoes

Season	Costs of Treatment	Costs of Production of Tomatoes (USD^a ha⁻¹)	Costs of fertilizers (USD ha ⁻¹)	Costs of biochar (USD ha⁻¹)	Total cost of treatment (USD ha⁻¹)
1	Fertilizers	1326.0	396.5	0.0	1722.5
	3.5 t ha⁻¹	1326.0	0.0	543.8	1869.8
	6.9 t ha⁻¹	1326.0	0.0	1087.6	2413.6
	13.8 t ha⁻¹	1326.0	0.0	2175.3	3501.3
	27.6 t ha⁻¹	1326.0	0.0	4350.5	5676.5
2	Fertilizers	1326.0	396.5	0.0	1722.5
	3.5 t ha⁻¹	1326.0	0.0	0.0	1326.0
	6.9 t ha⁻¹	1326.0	0.0	0.0	1326.0
	13.8 t ha⁻¹	1326.0	0.0	0.0	1326.0
	27.6 t ha⁻¹	1326.0	0.0	0.0	1326.0

^a1 USD = 3,733 UGX. It is assumed that farmers will obtain maize stover on their farms after harvesting maize and therefore it was not included as a cost

ISSN: 1471-2229