seed and oil yields, its components and two physiological indices including leaf canopy temperature (tc) and relative water content (rwc) were evaluated in two spring oilseed rape cultivars (rgs 300 and hyola 401) under non-stressed and water deficit imposed during stem elongation, flowering and seed filing stages. the experiments were conducted as a factorial consisted of 2 factors including i...

This study was conducted to investigate the effects of various irrigation water (W) and nitrogen (N) levels on growth, root-shoot morphology, yield, use efficiency greenhouse tomatoes in spring–summer fall–winter. The experiment consisted three (W: 100% crop evapotranspiration (ETc), 80%, 60% full irrigation) N application (N: 100%, 75%, 50% standard concentration Hoagland’s solution treatments...

Impacts of livestock grazing in arid and semiarid environments are often concentrated in and around wetlands where animals congregate for water, cooler temperatures, and green forage. We assessed the impacts of winter-spring (November-May) cattle grazing on marsh vegetation cover and occupancy of a highly secretive marsh bird that relies on dense vegetation cover, the California Black Rail (Lat...

Introduction This in vitro study was designed to evaluate and compare different endodontic irrigation and activation systems for removal of the intracanal smear layer. Methods and Materials Forty recently extracted, non-carious human intact single rooted premolars were selected and divided into five groups (n=10) according to the root canal irrigation systems; syringe and needle irrigation (C...

Agriculture of the inland arid region in Xinjiang depends on irrigation, which forms oasis of Northwest China. The production and water use of wheat, a dominant crop there, is significantly affected by undergoing climate variability and change. The objective of this study is to quantify interannual variability of wheat yield and water use from 1955 to 2006. The farming systems model APSIM (Agri...

Artificial rainwater harvesting system (ARHS) is a new way to increase water supply in semi-arid area, and has developed rapidly recent years in northwestern China. Not only it used in domestic supply, but also in agricultural as supply irrigation. More than 2 million water cellars have been built in Loess Plateau of China. In this paper, based on 5 years’ related experiments, field engineering...

The sustainable development of efficient water-saving agricultural irrigation in Loess Plateau requires reasonable and quantitative planning, design, management, and strategies based on crop-water-salt response relationship. In the present paper, data were measured by using the soil-water-salt sensor CS655 to modify the simulation of root uptake in the original Soil Water Atmosphere Plant (SWAP...

Thirteen million [corrected] metric tons of poultry litter are produced annually by poultry producers in the U.S. Poultry litter contains the sex hormones estradiol and testosterone, endocrine disruptors that have been detected in surface waters. The objective of this study was to evaluate the potential impact of poultry litter applications on estradiol and testosterone concentrations in subsur...

This work determined the impact of irrigation on the seasonal dynamics of populations of Pseudomonas spp. producing the antibiotics phenazine-1-carboxylic acid (Phz(+)) and 2,4-diacetylphloroglucinol (Phl(+)) in the rhizosphere of wheat grown in the low-precipitation zone (150 to 300 mm annually) of the Columbia Plateau of the Inland Pacific Northwest. Population sizes and plant colonization fr...