Results 211 to 220 of about 369 (258)

Take flight: predation risk induces wing polyphenism and dispersal in the aphid Myzus persicae

Pest Management Science, EarlyView.
Predator risk above a critical density induces winged morphs in Myzus persicae, promoting dispersal and reducing predation compared with wingless aphids. This density‐dependent phenotypic plasticity enhances survival but may compromise biological control by facilitating aphid dispersal.
Jamin Ali, Adil Tonğa, Bashiru Adams, Geoff M Gurr, Rizhao Chen, Qiyun Li   +5 more
wiley   +1 more source

[Hygienic aspects of the use and protection of irrigating-sprinkling systems].

Gigiena i sanitariia, 1977
A K, Pliasunov, T N, Smokotnina
openaire   +1 more source

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Designing Erosion-Safe Sprinkle Irrigation Technology

2002 Chicago, IL July 28-31, 2002, 2002
The generally used procedure and established practice of designing sprinkle irrigation systems does not include designing erosion-safe sprinkle application technology which encompasses both sprinkle application system and inherent to the system erosion-safe application schedules for the crops in the physical conditions of irrigated area. Application
exaly   +2 more sources

Profitable small-scale sprinkle irrigation in Guatemala

Irrigation and Drainage Systems, 1994
A technically successful, small program of villiage level sprinkle irrigation system installations in Guatemala was studied to ascertain its apparent economic benefits. A simple variant of high technology irrigation (pressurized demand systems) combines otherwise under-used water supply sources with idle, small plots in steep terrain.
exaly   +2 more sources

Spatial Water Distribution in Sprinkle Irrigation

Advances in Irrigation, 1987
Ido Seginer
exaly   +2 more sources

Abbreviated Sprinkle Irrigation Evaluation

Transactions of the ASAE, 1987
ABSTRACT COMPUTER simulation of uniformity and water ap-plication depth as a function of sprinkler spacing along the mainline and lateral was used to study an abbreviated method of evaluating performance of periodic and solid set sprinkle irrigation systems under no-wind conditions. A full-scale two-dimensional grid layout of collectors was abbreviated
null W. W. Wallender, null Shozo Ohira
openaire   +1 more source

Irrigation of Orchards by Sprinkling

1932
Topics Include Objects of the Experiments, Types of Sprinklers, Operating Characteristics of Sprinklers, Experimental Plots, and ...
Overley, F., Overholser, E., Garver, H., Vandecaveye, S., Spuler, A., Morris, O., Harley, C., Reeves, E., Diehl, H.   +8 more
openaire   +2 more sources

Hydraulic Ram Use for Sprinkle Irrigation

Transactions of the ASAE, 1984
ABSTRACT DIRECT hydraulic ram use for sprinkle irrigation was studied. From investigation of an actual field installation on a 24.3 ha (60 acre) farm, it was concluded that hydraulic rams could be effectively used for direct sprinkle irrigation.
null K. Kitani, null L. S. Willardson
openaire   +1 more source

Hydraulics of Sprinkling Systems for Irrigation

Transactions of the American Society of Civil Engineers, 1942
Portable systems for sprinkling agricultural crops were first used in the Sacramento Valley of California in 1931, although in 1930 there were a few scattered installations in the southern part of ...
openaire   +1 more source

Buried Lifting Sprinkling Irrigation Device

Journal of Irrigation and Drainage Engineering, 2018
AbstractSprinkler irrigation is widely used in agricultural irrigation as an important component of conserving water.
Guohua Zhang, Chongbao Xie, Haojie Lai, Xinhu Li   +3 more
openaire   +1 more source