חיפוש מתקדם
Journal of Environmental Quality
Feigin, A., Agric. Res. Org., Volcani Cent., Bet Dagan, Israel
Feigenbaum, S., Agric. Res. Org., Volcani Cent., Bet Dagan, Israel
Limoni, H., Agric. Res. Org., Volcani Cent., Bet Dagan, Israel
Effects of irrigation with secondary municipal sewage effluents on N availability in a fertilized soil were studied in a greenhouse experiment using 15N as a tracer. Corn (Zea mays) was grown in a clay soil with ammonium-N added as solid fertilizer, sewage effluent, and a mineral source. Between 55 and 69% of the ammonium sulfate-15N was taken up by the corn plants. Between 21 and 32% of the fertilizer-N was recovered as organic-N in the soil after 43 days, while negligible amounts of exchangeable-NH4 and NO3 were detected. Losses of ammonium sulfate-N applied to the soil before seeding, probably through denitrification, ranged between 6 and 15%. Similar results were obtained whether the fertilized soil was irrigated with demineralized water, sewage effluent, or a mineral solution simulating the mineral composition of the sewage effluent. About 61% of the tagged ammonium-N applied as sewage effluent was taken up by the corn plants, and 14% was immobilized in the organic fraction of soil. About 24% of the effluent-tagged-ammonium-N was lost, apparently through both denitrification and volatilization. The corresponding loss from the mineral-solution-tagged-N was about 17%. The simultaneous application of C and N by sewage effluents was probably responsible for the increased losses of N through denitrification found in the effluent-tagged-ammonium-N treatment. Recovery of N, in plant and soil, from ammonium sulfate incorporated into the soil before planting was somewhat greater than that of sewage effluent ammonium-N, and was not affected by irrigation with sewage effluent.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
Utilization efficiency of nitrogen from sewage effluent and fertilizer applied to corn plants growing in a clay soil
10
Feigin, A., Agric. Res. Org., Volcani Cent., Bet Dagan, Israel
Feigenbaum, S., Agric. Res. Org., Volcani Cent., Bet Dagan, Israel
Limoni, H., Agric. Res. Org., Volcani Cent., Bet Dagan, Israel
Utilization efficiency of nitrogen from sewage effluent and fertilizer applied to corn plants growing in a clay soil
Effects of irrigation with secondary municipal sewage effluents on N availability in a fertilized soil were studied in a greenhouse experiment using 15N as a tracer. Corn (Zea mays) was grown in a clay soil with ammonium-N added as solid fertilizer, sewage effluent, and a mineral source. Between 55 and 69% of the ammonium sulfate-15N was taken up by the corn plants. Between 21 and 32% of the fertilizer-N was recovered as organic-N in the soil after 43 days, while negligible amounts of exchangeable-NH4 and NO3 were detected. Losses of ammonium sulfate-N applied to the soil before seeding, probably through denitrification, ranged between 6 and 15%. Similar results were obtained whether the fertilized soil was irrigated with demineralized water, sewage effluent, or a mineral solution simulating the mineral composition of the sewage effluent. About 61% of the tagged ammonium-N applied as sewage effluent was taken up by the corn plants, and 14% was immobilized in the organic fraction of soil. About 24% of the effluent-tagged-ammonium-N was lost, apparently through both denitrification and volatilization. The corresponding loss from the mineral-solution-tagged-N was about 17%. The simultaneous application of C and N by sewage effluents was probably responsible for the increased losses of N through denitrification found in the effluent-tagged-ammonium-N treatment. Recovery of N, in plant and soil, from ammonium sulfate incorporated into the soil before planting was somewhat greater than that of sewage effluent ammonium-N, and was not affected by irrigation with sewage effluent.
Scientific Publication
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