Zobrazeno 1 - 10
of 25
pro vyhledávání: '"L Schwankl"'
Autor:
G Mcgourty, D Lewis, J Metz, J Harper, R Elkins, J Christian-Smith, P Papper, L Schwankl, T Prichard
Publikováno v:
California Agriculture, Vol 74, Iss 1 (2020)
Agricultural water demands can conflict with habitat needs in many North Coast watersheds. Understanding different water use patterns can help reduce conflict over limited supplies. We measured on-farm crop water use and conducted grower interviews t
Externí odkaz:
https://doaj.org/article/b8bc10f878fa4d0f80fd272e54b9aa25
Publikováno v:
California Agriculture, Vol 68, Iss 3 (2014)
In response to Napa Sanitation District's interest in expanding its delivery of recycled water to vineyards for irrigation, we conducted a feasibility study to assess the suitability of the water for this use. We adopted two approaches: comparing the
Externí odkaz:
https://doaj.org/article/b90438611ea0445ca917fb4c1c4f4642
Autor:
L Schwankl, C Frate
Publikováno v:
California Agriculture, Vol 58, Iss 3 (2004)
Many of the dairies in California's Central Valley use a water flush system for manure handling; the manure water is eventually mixed with freshwater and applied to cropland during irrigation. Good performance during irrigation applications is import
Externí odkaz:
https://doaj.org/article/aaaaeaa825744c6e904b233d0636c79e
Publikováno v:
California Agriculture, Vol 57, Iss 3 (2003)
As California's dairy industry continues to grow, manure management has become an increasingly important issue for dairy producers, government regulators and the public living in close proximity to dairies. Dairies are increasingly required to prepar
Externí odkaz:
https://doaj.org/article/c80de4858cd34738971a6598d23a463e
Publikováno v:
California Agriculture, Vol 53, Iss 5 (1999)
The costs of solid-set sprinkler and microirrigation (drip, micro-sprinkler and minisprinkler) systems are a major factor in the adoption of these irrigation technologies. Following design criteria provided to them, an irrigation design firm prepared
Externí odkaz:
https://doaj.org/article/743dd2211a4f41f3a44766a4ab33a4eb
Publikováno v:
California Agriculture, Vol 53, Iss 2 (1999)
In the Arbuckle area of the Sacramento Valley, a 22-acre orchard was planted in 1990 with four almond varieties (‘Nonpareil’, ‘Butte’, ‘Carmel’ and ‘Monterey’). The orchard was irrigated with three types of microirrigation — surface
Externí odkaz:
https://doaj.org/article/2fef307305ea47aea6e0bf6c6decf5f6
Autor:
B Hanson, L Schwankl
Publikováno v:
California Agriculture, Vol 52, Iss 1 (1998)
Flow meters were tested under a variety of conditions to determine potential errors in flow rate measurements due to excessive turbulence in the water. Results showed that propeller meters, the Hall meter and the Collins meter were not particularly s
Externí odkaz:
https://doaj.org/article/cc88c8413c964c81938cb43889515e3a
Publikováno v:
California Agriculture, Vol 46, Iss 6 (1992)
To increase irigation uniformity and to reduce drainage volumes, some San Joaquin Valey growers drag weighted stel cylinders (torpedoes) in furows before irigation to sped the advance of water acros the field. The efectivenes of this practice and
Externí odkaz:
https://doaj.org/article/7b29f72da7cf4b92961963b56f405073
Publikováno v:
California Agriculture, Vol 46, Iss 6 (1992)
Three devices that physically treat irrigation water were tested in the laboratory and the field. Results of these experiments indicate these water conditioners were ineffective in increasing the infiltration rate of water into the soil or in prevent
Externí odkaz:
https://doaj.org/article/b8158878697b46418008ecc28a6747c2
Autor:
L Schwankl, G Mcgourty
Publikováno v:
California Agriculture, Vol 46, Iss 5 (1992)
The practice of injecting organic fertilizers into low-volume irrigation systems is not widespread, partly because of concerns that the materials will clog emitters. This study looks at two spray-dried organic fertilizers (fish protein and poultry pr
Externí odkaz:
https://doaj.org/article/9407be773d3d466aaf8fd1890a20eb69