Effect of Fertilization Practice on Nitrate Accumulation and Leaching in Vegetable Greenhouse System
نویسنده
چکیده
A leaching experiment was conducted on three level of total N soils transplanted with lettuce in packed soil columns. Nitrate content in the surface soil layer increased to 52.6, 92.8 and 92.1 mg kg-1 when 30 t ha-1 poultry manure was used alone in the low, medium and high level of total N soils. Measured leachate data showed that more nitrate was leached in the chemical fertilized soils in the low and high level of total N soils. In conclusion, the study clearly demonstrated that the appropriate application rate of poultry manure and chemical fertilizer with minimized nitrate leaching loss. Copyright © 2014 IFSA Publishing, S. L.
منابع مشابه
Soil acidification with various planting patterns in Lhasa, Tibet, China
The spread of vegetable production around Lhasa, Tibet, China, with high nitrogen fertiliser use may cause accelerated acidification which has consequences for soil productivity. In order to understand the different patterns of soil acidity in Lhasa, Tibet, China three patterns of land use were studied namely: grain, openfield vegetable, and greenhouse vegetable. Fertilizer application was high...
متن کاملWater Leakage and Nitrate Leaching Characteristics in the Winter Wheat–Summer Maize Rotation System in the North China Plain under Different Irrigation and Fertilization Management Practices
Field experiments were carried out in Huantai County from 2006 to 2008 to evaluate the effects of different nitrogen (N) fertilization and irrigation management practices on water leakage and nitrate leaching in the dominant wheat–maize rotation system in the North China Plain (NCP). Two N fertilization (NF1, the traditional one; NF2, fertilization based on soil testing) and two irrigation (IR1...
متن کاملتأثیر مقدار نیترات و زمان برداشت بر غلظت آهن، روی، مس، پتاسیم و فعالیت آنزیم نیترات ردوکتاز در کاهو و اسفناج
Leafy vegetables are considered as the main sources of nitrate in the human diet. In order to investigate the effect of nitrate levels and harvest times on nitrate accumulation, nitrate reductase activity, concentrations of Fe, Zn, Cu and K in Lettuce and Spinach and their relation to nitrate accumulation in these leafy vegetables, two harvest times (29 and 46 days after transplanting), two veg...
متن کاملResponses of soil microbial processes and community structure to tillage events and implications for soil quality
The short-term responses of soil microbial processes and community structure to perturbation constitute one aspect of soil quality. Such responses are often associated with an increase in the emissions of greenhouse gases (i.e., CO2, NO, or N2O) and the accumulation and potential loss of nitrate by leaching. Here we describe our recent work on responses of soil carbon and nitrogen dynamics, mic...
متن کاملEffect of Different Nutrient Solutions on The Yield, Chemical Composition and Nitrate Accumulation of Lettuce in Soilless Culture System
An experiment was conducted to select the optimum nutrient solution for growing lettuce (Lactuca sativa L.) under hydroponic conditions (open system) and Shahrekord climate, as a completely randomized design with five different nutrient solutions and three replicates, in Shahrekord University. The nutrient solutions were: 1) Research Station for Floriculture and Greenhouse Vegetables (the Nethe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2014