A proposed framework for irrigation management transfer in Iran: Lessons from Asia and Iran

Water resource management/ Land management/ Leaching/ Drainage/ Sodic soils/ Soil reclamation/ Supplemental irrigation/ Irrigation programs

A review of management strategies for salt-prone land and water resources in Iran

Water resource management/ Land management/ Leaching/ Drainage/ Sodic soils/ Soil reclamation/ Supplemental irrigation/ Irrigation programs

Mechanically reclaiming abandoned saline soils: a numerical evaluation

Water quality / Groundwater / Simulation models / Calibrations / Water table / Water balance / Hydraulics / Soil reclamation / Soil water / Flow / Soil properties / Salinity / Pakistan / Punjab / Sindh

Soil salinity-sodicity and land use suitability in the Fordwah Eastern Sadiqia (South) irrigated area

Soil salinity / Sodic soils / Soil classification / Soil surveys / Soil analysis / Groundwater development / Water table / Water quality / Land use / Irrigation canals / Farmer participation / Surface drainage / Subsurface drainage / Soil reclamation / Waterlogging / Pakistan / Fordwah Eastern Sadiqia / Bahawalnagar District

Ecological spectrums of heterotrophic flagellates (protista) in water bodies of ukrainian polissya area

Dependence of 26 heterotrophic flagellate species development in central part of Ukrainian Polissya area from operating pH and concentrations of dissolved organic matter and oxygen in the waters is considered. Narrowing of existence spectrums in certain types of water body characteristic for some species of heterotrophic flagellates is stated; this peculiarity is strongly expressed in the bogs where specific complex of hydrochemical conditions to have a place

Equity Issues Relating to Irrigation-induced Soil Degradation under Left Bank Canal of Tungabhadra Project Area, Karnataka

The equity issues concerning soil degradation and soil reclamation have been analysed for Tungabhadra Project Area of the Karnataka state. The study is based on primary data obtained from 325 respondent farmers. The data gathered by survey method have been analysed using conventional and simple tabular method of analysis, Gini ratio, and Lorenz curve. The study has revealed that the small and marginal farmers are worst affected by soil degradation. The large farmers have also experienced the brunt of soil degradation but the effect has been marginal since they have alternative sources of livelihood. The study has further indicated that the extent of inequity is higher on degraded than normal soils. However, this can be reduced to a great extent by launching land reclamation programmes. Therefore, the study has suggested that the government should initiate land reclamation programmes on a large scale on long-term basis so that the fruits of land reclamation technologies could reach the vulnerable sections of the society.Agricultural and Food Policy,

Biotopic distribution of naked amoebas (protista) in ukrainian polissya area

Forty-one species of naked amoebas were found in the different types of waterbodies of Zhytomyr and Volyn’ parts of Ukrainian Polissya region. The major part of species of naked amoebas in this region demonstrated the prevalence to living in a certain type of water body that possible depends on the hydrochemical and trophic parameters of water. The limnetic and floodplain species complexes of amoebas are distinguished in Ukrainian Polissya

Комплексные задачи и решения по диагностике бетонных и железобетонных конструкций объектов гидромелиоративного назначения

Розглянуто основні принципи та розроблено методику діагностики конструкцій об'єктів меліоративного та гідротехнічного призначення. Запропоновано рекомендації по відновленню бетону.The basis foundations are considered and the technique of diagnostic of reinforced-concrete designs of objects of a soil-reclamation and hydraulic assignment is designed. The recommendations on recovery of concrete are offered

Bacterial endophytes of plants used for soil reclamation

Microorganisms that colonize the plant rhizosphere and root tissues may provide host plants with nutrients, stimulate growth and increase tolerance to abiotic stress. These plant-microbe associations are also being investigated to assist land reclamation in Alberta's oil sands. However, these newly reconstructed landscapes may be limited by several factors that include low soil nutrient levels, reduced microbial activity and the presence of residual hydrocarbons. This study was designed to assess the bacterial root microbiome of plants growing in oil sands reclamation covers and investigate the potential use of bacterial endophytes in phytoremediation. Soil microbial community structure in these areas was mainly driven by soil total and organic carbon, NH4+ and organic matter. In addition, an assessment of the bacterial root microbiome associated with sweet clover (Melilotus albus) and barley (Hordeum vulgare) strongly suggests that plants have the ability to select for certain soil bacterial consortia. Sweet clover plants were more selective and mainly associated with Sinorhizobium and Rhizobium, whereas Acholeplasma was unique to barley. Furthermore, genera such as Pseudomonas and Pantoea were able to successfully colonize both plants. However, due to the presence of residual hydrocarbons in these areas, plants may rely on association with hydrocarbon degrading endophytes. Therefore, an assessment of unculturable endophytic communities revealed that sweet clover had higher CYP153 gene copy numbers when compared to barley. In addition, a total of 42 endophytic bacteria isolates tested positive for hydrocarbon degrading genes and were further investigated for their application as inoculants. Based on overall growth promoting effects, sweet clover plants and four different bacterial strains were selected for phytoremediation experiments. Despite plant growth inhibition caused by diesel fuel toxicity, an overall higher plant biomass was observed in inoculated plants. However, only at high diesel concentrations did bacterial inoculants enhanced soil hydrocarbon degradation. In conclusion, bacterial species associated with plants growing in reclamation covers were mainly driven by plant factors and this microbiome harbors endophytes that can be potentially used in phytoremediation. In particular, bacterial endophytes such as Pantoea and Pseudomonas species in association with sweet clover plants were shown to successfully reduce petroleum hydrocarbons in soil

James Valley Agricultural Research and Extension Center Annual progress Report, 1976

This is the 1976 progress report for the James Valley Agricultural Research and Extension Center. The reports in this document represent the research conducted at the Center during 1975. The report includes weather data, information on crop production, irrigation, soil reclamation, performance and variety test, and other experiments conducted at the Redfield, South Dakota Extension Center