Results 111 to 120 of about 1,776,302 (383)

Modelling the Spatio‐Temporal Effects of Water Level Control in an Agricultural Collector Ditch Network

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT The study focused on modelling open channel flow in an agricultural ditch network. The objectives were (1) to set up a computational tool to explore the hydraulic impacts of water level control in a collector ditch network and (2) to test the effects of damming height and ditch flow resistance on the water level and its relation to field ...
Elina Paavonen   +3 more
wiley   +1 more source

Agroforestry Innovation through Planned Farmer Behavior: Trimming in Pine–Coffee Systems

open access: yesLand, 2020
Knowledge transfer depends on the motivations of the target users. A case study of the intention of Indonesian coffee farmers to use a tree canopy trimming technique in pine–based agroforestry highlights path-dependency and complexity of social ...
Edi Dwi Cahyono   +6 more
doaj   +1 more source

Hydrological Factors for Phosphorus Transfer from Agricultural Soils

open access: yes, 1999
Understanding and managing against phosphorus (P) transfer from agricultural soils to receiving waters is a multidisciplinary task in which the role of hydrology is particularly difficult to simplify. We review current knowledge to define the spatial and temporal controls on P transfer from agricultural soils via the various hydrological pathways ...
Haygarth, P. M.   +3 more
openaire   +2 more sources

Literature review of the remote sensing of natural resources [PDF]

open access: yes
s of 596 documents related to remote sensors or the remote sensing of natural resources by satellite, aircraft, or ground-based stations are presented.
Fears, C. B., Inglis, M. H.
core   +1 more source

Transmission Water Losses at South African Irrigation Schemes: A Case Study of the Vaalharts Irrigation Scheme

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT Irrigation water supply is under scrutiny because of dwindling water resources. Most irrigation water in South Africa (SA) is transmitted by canals. Transmission water loss (TWL) accounts for 12% of the irrigation water losses in SA. Therefore, there is a need to investigate and understand the major parameters influencing TWL at Vaalharts ...
M. Mutema   +5 more
wiley   +1 more source

Hydrological degradation of automorphic soils in agricultural landscapes

open access: yesDokuchaev Soil Bulletin, 2012
The impoverishment of physical and water properties resulted from the use in agriculture for a long period of time is exemplified by soddy-podzolic, gray soils and chernozems. Alternation of natural (forest, meadow and steppe) coenoses by agrocoenoses leads to degradation of soils, impoverishment of their temperature and water regimes, water supply and
openaire   +2 more sources

Aviation's role in earth resources surveys [PDF]

open access: yes
The role of satellites designed to make a wide variety of earth observations is discussed along with the renewed interest in the use of aircraft as platforms for similar and complementary earth resources surveys.
Mulholland, D. R., Syvertson, C. A.
core   +1 more source

Clogging Analysis in Drip Irrigation Systems: CFD and DEM Approaches

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT Clogging represents a critical challenge that undermines the efficiency and sustainability of drip irrigation systems by inducing uneven water distribution and increasing maintenance requirements. In this study, the phenomenon of clogging in drip emitters was investigated via computational fluid dynamics (CFD) in conjunction with the discrete ...
Nuri Orhan, Berk Kalem
wiley   +1 more source

Quantification of the impact of hydrology on agricultural production as a result of too dry, too wet or too saline conditions [PDF]

open access: green, 2016
M.J.D. Hack‐ten Broeke   +8 more
openalex   +2 more sources

Biomonitoring of Environmental Pollution Using Forest Tree Foliage Chemistry at Extremely Contaminated, Post-Industrial Sites

open access: yesAtmosphere
Biomonitoring based on foliage chemistry was used to study the effects of environmental sulfur (S) pollution on forest stands. The foliage samples were collected in two forest ecosystems exposed to industrial emissions: a zinc (Zn) and lead (Pb) smelter ...
Justyna Likus-Cieślik   +2 more
doaj   +1 more source

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