Jua Kali Intermediate Technology

Weeding and Weeding Tools PDF Print E-mail
Weeding and Weeding Tools

Introduction: Weeds cause greater reduction in potential yields than any other single factor by their competition for light, nutrient and water with the crop the farmer is trying to grow. This is particularly true at the small scale level where to tools available, such as the machete, are intended to be for multipurpose use rather than for weeding.

It is often traditional to start weeding when the weed canopy covers the whole area. At present most weeds are removed by mechanical means but the rate and type of work of the existing tools is both slow and tends to loosen the soil thus allowing valuable moisture to escape. In any one area weeds develop at the same time so the hand labour is limited to those who normally work on that area and where extra casual labour is available the cost is high in relation to the daily output. The net result is that some weeds are able to seed before they can be removed and the weed seed reservoir in the soil increases thus compounding the problem.
FileDescriptionFile size
Download this file (Hand Hoes Nov 08.pdf)Hand HoePlans for the hand hoe13 Kb
Low Energy Hand/foot Precision Planter for Seed and Fertiliser' PDF Print E-mail


Designed for use by women

This tool will plant through surface mulch in dry and moist soils.

In use the tool is rocked backward and forward as foot and hand pressure is applied.

Prior to dropping the seed the tool is pushed forward and this creates and maintains the tapered slot in the ground.

One person operates the tool and drops a controlled amount of fertiliser using a small plastic container  whose capacity has previously been calibrated for the field and crop requirements.

FileDescriptionFile size
Download this file (PlanterTHREE FunnelTemplate.pdf)Spear Planter Plans 03The third set of spear Planter plans that show how to make the seed and fertiliser funnels5 Kb
Download this file (PlanterTWOTemplateSpearBlade.pdf)Spear Planter Plans 02This file contains the second set of plans for the Spear Planter6 Kb
Download this file (PlantingSpearONEApril08.pdf)Spear Planter Plans 01The first of three plans for the Spear Planter as described in the article17 Kb
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