Results 111 to 120 of about 1,812,137 (388)

Vulnerability assessments of pesticide leaching to groundwater [PDF]

, 2007
Pesticides may have adverse environmental effects if they are transported to groundwater and surface waters. The vulnerability of water resources to contamination of pesticides must therefore be evaluated.
Stenemo, Fredrik
core  

Transport and reduction of nitrate in clayey till underneath forest and arable land. [PDF]

, 2004
Transport and reduction of nitrate in a typically macroporous clayey till were examined at variable flow rate and nitrate flux. The experiments were carried out using saturated, large diameter (0.5 m), undisturbed soil columns (LUC), from a forest and ...
Eiland, F., Helstrup, T., Jensen, M.B., Jørgensen, P.R., Urup, J., Vinther, F.P.   +5 more
core   +1 more source

Concurrent Response of Soybean to Fixed (Full and Limited) and Variable Rate Irrigation Management in Three Soil Types: II. Growth, Yield, Evapotranspiration and Water Productivity

Irrigation and Drainage, EarlyView.
ABSTRACT Soybean growth, yield, crop evapotranspiration (ETc) and crop water use efficiency (CWUE or crop water productivity, CWP) under different irrigation levels in three different soil types in the same field were investigated concurrently. Treatments in each soil type were: (i) variable rate irrigation (VRI), (ii) fixed rate full irrigation (FR‐1″)
S. Irmak, T. A. Hinn
wiley   +1 more source

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

Land, 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, Salsabila Fairuzzana, Deltanti Willianto, Eka Pradesti, Niall P. McNamara, Rebecca L. Rowe, Meine van Noordwijk   +6 more
doaj   +1 more source

Assessment of Constraints, Opportunities and Income Impacts Associated with Small‐Scale Irrigation in Zebit, Ethiopia

Irrigation and Drainage, EarlyView.
ABSTRACT Small‐scale irrigation represents a highly effective system designed to enhance production and productivity, mitigate risks associated with rainfall variability and increase the income of rural farm households. This study was conducted to analyse small‐scale irrigation impact on household income and assess the challenges and opportunities in ...
Molla Gessesse, Guesh Zeru, Amare Bitew, Derjew Fentie   +3 more
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]

, 2016
M.J.D. Hack‐ten Broeke, J.G. Kroes, Ruud P. Bartholomeus, J.C. van Dam, Allard de Wit, Iwan Supit, D.J.J. Walvoort, P.J.T. van Bakel, R. Ruijtenberg   +8 more
openalex   +2 more sources

The forest-hydrology-poverty nexus in Central America : An heuristic analysis [PDF]

A"forest-hydrology-poverty nexus"hypothesis asserts that deforestation in poor upland areas simultaneously threatens biodiversity and increases the incidence of flooding, sedimentation, and other damaging hydrological processes.
Chomitz, Kenneth M., Nelson, Andrew
core  

Hydrological degradation of automorphic soils in agricultural landscapes

Dokuchaev 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

Concurrent Response of Soybean to Fixed‐ (Full and Limited) and Variable‐Rate Irrigation Management in Three Soil Types: I. Soil Water Dynamics

Irrigation and Drainage, EarlyView.
ABSTRACT This research investigated soybean soil water dynamics under different irrigation levels in three different soil types in the same field concurrently. Treatments imposed in each soil type were: (i) variable‐rate irrigation (VRI), (ii) fixed‐rate full irrigation (FRI‐1″ or FRI‐25.4 mm) and (iii) fixed‐rate limited irrigation (FRI‐0.75″ or FRI ...
S. Irmak, T. A. Hinn, M. S. Kukal, A. T. Mohammed   +3 more
wiley   +1 more source

Agronomic Performance and Water Use Indicators of Cactus Species Widely Cultivated in Semiarid Regions

Irrigation and Drainage, EarlyView.
ABSTRACT This study aimed to evaluate the agronomic performance, crop evapotranspiration (ETc), crop coefficients (Kc, Kcb and Ke) and yield response factor (Ky) of three forage cactus clones—Orelha de Elefante Mexicana (OEM), Miúda (MIU) and IPA Sertânia (IPA)—grown in a semiarid environment.
George do Nascimento Araújo Júnior, Luciana Sandra Bastos de Souza, Alexandre Maniçoba da Rosa Ferraz Jardim, Carlos André Alves de Souza, Sérvulo Mercier Siqueira e Silva, Djalma Cordeiro dos Santos, Antonio José Steidle Neto, José Edson Florentino de Morais, José Francisco da Cruz Neto, Marcelo José da Silva, José Carlos Mendonça, Enio Farias de França e Silva, Thieres George Freire da Silva   +12 more
wiley   +1 more source