A cut stump sprayed with herbicides (Steve Hoel)
Cut-stump technology is a suitable method for killing unwanted woody trees and weeds using cutting and herbicide. It involves the cutting of the target tree not more than 15 cm from the ground followed by spraying or painting the freshly cut stump surface, the stump and root collar with the herbicide. Tordon (Picloram 65g/l + 2,4-D 240g/l) is usually mixed with an oil-based substance such as diesel and applied immediately and not more than 15 minutes after cutting for best results to be achieved. Oil-based solvents act as penetrants increasing the rate of chemical absorption by the plants. For mature trees with wide diameters, the cambium at the edge of the cut stump is usually targeted in addition to the cut surface to kill the roots and stems hence prevent regrowth. The area should be fully wet with herbicide, but not so much that it induces runoff. This approach should be avoided in times of heavy rain which could prevent the herbicide from reaching the ground line. It is suitable where the density of the target invasive plant is low.
Localização: Baringo, Isiolo, Quênia
Nº de sites de tecnologia analisados: 2-10 locais
Difusão da tecnologia: Aplicado em pontos específicos/concentrado numa pequena área
Data da implementação: menos de 10 anos atrás (recentemente)
Tipo de introdução
Especificações técnicas
Autor: https://www.youtube.com/watch?v=gCbHkPPkRZI
The target tree is cut above the ground, usually 15 cm, after which a pressurized spray or painting brush is used to apply a herbicide around the freshly cut surface. The cambium should be targeted for trees with wider diameters to facilitate absorption of the herbicide solution to the roots.
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| Especifique a entrada | Unidade | Quantidade | Custos por unidade (Kenyan Shilling) | Custos totais por entrada (Kenyan Shilling) | % dos custos arcados pelos usuários da terra |
| Mão-de-obra | |||||
| Cutting and treating tree stumps | man days | 10,0 | 300,0 | 3000,0 | 100,0 |
| Equipamento | |||||
| Power saw | |||||
| Fertilizantes e biocidas | |||||
| Tordon chemical (www.desertcart.co.ke) | 32 oz bottle | 1,0 | 10689,0 | 10689,0 | 100,0 |
| Diesel | liter | ||||
| Custos totais para a implantação da tecnologia | 13'689.0 | ||||
Prosopis is known to threaten lake shores frequented by Flamingos (e.g. Lake Bogoria)
Once prosopis is cleared, more diverse habitats may develop - however this also depends on the land management strategies.
As an evergreen species, dense prosopis stands can evaporate large amounts of water (up to 70 liters/day/tree)
