نتایج جستجو برای: soil physical quality
تعداد نتایج: 1518383 فیلتر نتایج به سال:
this study was conducted to investigate the characteristics of input and output wastewater of the bandargaz wastewater treatment plant on the basis of the data collected during operation and the samples taken during the study period. for this purpose, three samples were taken from the outflow wastewater and 25 quality parameters were tested. also, four soil samples were taken from the soils whi...
In Nigeria irrigated agriculture is an important tool for economic growth, food security, and poverty reduction during dry periods of rain-fed agriculture. The concentration and composition of dissolved constituents in water determines its quality for irrigation use. Water quality studies strongly suggest that agriculture is a leading source of water quality problems, due to pesticides and othe...
Earthworm biomass and production in savannas are limited by seasonal precipitation and the lack of organic and nutrient resources; I hypothesize that after a long-term protection of savanna from fire and agricultural activities drastic changes in the physical and chemical characteristics of the soil occur with a concomitant increase in earthworm abundance and activities. Similar changes might o...
Tillage management is a direct factor in affecting soil quality, which key sustainable agriculture. However quality evaluation needs significant manpower, material resources and time. To explore the sensitive indicators of affected by tillage management, eight physical chemical properties under three managements, including plow tillage, subsoiling rotary were determined long-term experiment Nor...
Capacity-based indicators of soil physical quality (SPQ) and pore distribution parameters were proposed to assess the effects compost amendment but their determination was limited desorption water retention experiments. This study also considered size obtained from adsorption experiments establish effectiveness in modifying hydrological attributes a sandy loam soil. Repacked samples with differ...
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