Crop | Experimental Type | Soil | Region | Biochar | Application Rate | Effect | Authors |
Cherry, tomato | Pot | Chromosol | Australasia | Wastewater sludge pyrolysed at 550˚C | 10 ton/ha | 64% | [116] |
Wheat, Soybean, Radish |
| Ferrosol & Calcerosol | Australasia | Pyrolysed paper grindery waste
| 10 ton/ha | Up to 225% rise in biomass production (soybean only: negative responses for wheat and soybean). | [115] |
Rice (Oryza sativa L., cv Wuyunjing 7) | Field
|
| China |
| 10 & 40 ton/ha | Increase in rice yield of up to 14% in highest application rate and in the absence of applied N. | [117] |
Maize | Pot | Ultisol | China | Rice straw, pyrolysed at 250˚C - 400˚C for 2 - 8 Hours. | 1% ± NPK | Increased maize yield of 146% in the presence of NPK and 64% in its absence. | [118] |
Maize
| Pot | Top soil & subsoil | South America | sugarcane, bagasse | 50 g kg/soil +/−bio digest waste(100kgN /ha) | Biochar improved green biomass growing of maize in top soil non-attendance and attendance of waste. Biochar increased green biomass in presence of effluent in subsoil. | [119] |
Maize | Field | Degraded Amazonian | South America |
|
| Biochar doubled maize yield. | [120] |
Radish | Pot | Alfisol | Australasia | Poultry litter, pyrolysed at 450˚C and 550˚C | 0 - 50 ton/ha +/− 100 kg N/ha | (+42%) at 10 ton/ha without N (+96%) at 50 ton/ha without N with N, lower temp material more effective. | [121] |
Radish (Raphanus sativus) | Pot | Alfisol | Australasia | Green waste, pyrolysis | 10 - 100 ton/ha | At highest rates with nitrogen (100 kg∙ha−1) application, +280% yield, compared to +95% in absence of biochar. | [122] |