Abstract
SUMMARY A tied ridge system of hand cultivation has been practised successfully in parts of Tanzania for many years. Equipment to mechanize this system was devised and constructed by the National Institute for Agricultural Engineering, U.K., particularly for use in areas of marginal rainfall where water conservation is essential. Agronomic trials with this equipment were carried out on three soil types in Northern Tanzania. Records from resistance units showed much better penetration of rainfall under tied ridges than under flat cultivation. Corresponding yield responses in maize were only obtained when the increase in available water made an appreciable difference to conditions of water stress at the time of tasselling and silking. Weeding operations using a ridging body achieved a satisfactory control. After a few modifications to the equipment, especially the incorporation of a small tine to rip the bottom of the basins to improve infiltration, the system of cultivation based on ripping, ridging and tieing proved to be an adequate alternative to ploughing and harrowing for seed bed preparation, and a much more efficient method of water conservation.
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Claims 5
Claim · model-written summary
Tied ridges gave much better rainfall penetration than flat cultivation.
- Treatment
- tied ridgese1
- Outcome
- penetration of rainfalle1
- Direction
- much bettere1
- Comparator
- flat cultivatione1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Records from resistance units showed much better penetration of rainfall under tied ridges than under flat cultivation”
e2“Corresponding yield responses in maize were only obtained when the increase in available water made an appreciable difference to conditions of water stress at the time of tasselling and silking”
Claim · model-written summary
Maize yield responses were obtained only when the increase in available water made an appreciable difference to water stress at tasselling and silking.
- Outcome
- yield responsese2
- Qualifier
- only obtained when the increase in available water made an appreciable difference to conditions of water stresse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Corresponding yield responses in maize were only obtained when the increase in available water made an appreciable difference to conditions of water stress at the time of tasselling and silking”
Claim · model-written summary
Weeding with a ridging body achieved a satisfactory weed control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Corresponding yield responses in maize were only obtained when the increase in available water made an appreciable difference to conditions of water stress at the time of tasselling and silking”
e3“Weeding operations using a ridging body achieved a satisfactory control”
Claim · model-written summary
The ripping, ridging and tieing system was an adequate alternative to ploughing and harrowing for seed bed preparation.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the system of cultivation based on ripping, ridging and tieing proved to be an adequate alternative to ploughing and harrowing for seed bed preparation”
e2“Corresponding yield responses in maize were only obtained when the increase in available water made an appreciable difference to conditions of water stress at the time of tasselling and silking”
Claim · model-written summary
The tied ridge system was a much more efficient method of water conservation.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“a much more efficient method of water conservation”
e2“Corresponding yield responses in maize were only obtained when the increase in available water made an appreciable difference to conditions of water stress at the time of tasselling and silking”