Sprinkler and Corn Canopy Effects on Water Application Characteristics

Autor:	Dwayne Beck, K. A. Stange, Darrell W. DeBoer
Rok vydání:	2001
Předmět:	Canopy Hydrology Irrigation Nozzle Soil surface Agricultural and Biological Sciences (miscellaneous) Irrigation water Impact sprinkler Animal science Medium pressure Environmental science Water Science and Technology Civil and Structural Engineering Field conditions
Zdroj:	Journal of Irrigation and Drainage Engineering. 127:272-276
ISSN:	1943-4774 0733-9437
Popis:	Water application characteristics of a very low pressure spray sprinkler (40kPa), a low pressure spray sprinkler (100 kPa), a medium pressure impact sprinkler (170 kPa), and a high pressure impact sprinkler (345 kPa) were evaluated under field conditions. Average field application rates varied from 42 to 156 mm/h and maximum 5-minute application rates varied from 54 to 226 mm/h. Both were inversely related to sprinkler nozzle pressure in a manner that can be described by a logarithmic relationship. Maximum 5-min and 10-min application rates were, respectively, about 20 and 10% higher than average rates for the irrigation events. The 100, 170, and 345 kPa sprinklers produced application uniformity coefficients of 95% for single events and up to 99% for sequential events. About 70% of applied irrigation water reached the soil surface within a 200-mm diameter area at the base of corn plants. Maximum water application rates at the base of corn plants were amplified from three to four times when compared with above-canopy rates.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2757e7a9a9f2db701b9559e9dfd86f36 https://doi.org/10.1061/(asce)0733-9437(2001)127:5(272) Zobrazit plný text záznamu Plný text ve formátu PDF