Global programs / Global project 931-0116 · 1970–1978 · agriculture · Utah State University
This paper deals exclusively with the water distribution or uniformity of application aspects of sprinkler irrigation system design. As a first step in optimizing system design, the anticipated field performance of each sprinkler-pressure-nozzle-discharge selection must be predicted. A number of researchers, including Bilanski and Kidder (1958), Chu and Allred (1968), Seginer (1963), and Umback and Lembke (1966), have dealt with this problem from a theoretical basis. While a knowledge of the aerodynamic aspects of sprinkler jets may be helpful in the mechanical design of sprinklers and for a better understanding of the general interactions between wind speed, trajectory angle, pressure, and nozzle size, it has not been successfully applied to predicting sprinkler uniformity under field conditions.
Source: DEC abstract, PN-AAA-446 (1971). The source's own text.
Operated in: Ecuador, Latin America, Uganda, China, Bolivia, Nigeria, India.
When the program ran, from its start year to the latest document year. A hatched bar means the start is our estimate.
Axis: years in documents. The start year comes from evaluation period; the end is the latest document year, so the program may have run longer.
A few documents to read first. Each opens in the side panel, with the PDF to download.
Evaluation studies and evaluation-type documents linked to this program.
Showing 3 of 4 evaluations.
| Name | Role | Years | Basis | Evidence |
|---|---|---|---|---|
| Utah State University | implementer | 1971 to 1978 | Stated in a document | 36 sources |
| Utah State University. Dept. of Agricultural and Irrigation Engineering | implementer | 1970 to 1978 | Stated in a document | 7 sources |
Awards, topics, similar programs and how to read this page.
Scope: global. How the scope was set is not described yet. High confidence.
How sure we are: 0.95.
| Name | Years | Basis | Evidence |
|---|---|---|---|
| AID/CSD-2459 (award, fiscal year not recorded) | 1970 to 1978 | Stated in a document | 45 sources |
Showing 10 of 31 documents.
| Title | Year | Type |
|---|
| implementer |
| 1974 |
| Stated in a document |
| 1 source |
| U.S. Dept. of Agriculture. Economic Research Service. Resources and Technology Div. | implementer | 1972 | Stated in a document | 1 source |
| Name | Years | Basis | Evidence |
|---|---|---|---|
| Ecuador | 1971 to 1974 | Stated in a document | 4 sources |
| Latin America | 1970 to 1975 | Stated in a document | 3 sources |
| Uganda | 1971 | Stated in a document | 1 source |
| China | 1974 | Stated in a document | 1 source |
| Bolivia | 1972 | Stated in a document | 1 source |
| Nigeria | 1972 | Stated in a document | 1 source |
| India | 1974 | Stated in a document | 1 source |
| Name | Years | Basis | Evidence |
|---|---|---|---|
| USAID. Bur. for Development Support. Ofc. of Agriculture | 1970 to 1978 | Stated in a document | 45 sources |
Sector profile (computed): Agriculture: crop production, inputs, pests, irrigation 47%; Natural resources and biodiversity (forests, wildlife, water resources) 23%; Agriculture: research, extension, training, technology 7%
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32 facts shown; 0 unconfirmed links; 0 support mechanisms (not programs); 46 documents cite this program.
Program key prj:9310116
No quote: this fact comes from a metadata field, shown as stored.
No quote: this fact comes from a metadata field, shown as stored.