NITRATE NITROGEN LEACHING IN A CORN SILAGE FIELD FERTIGATED VIA A SPRINKLER IRRIGATION SYSTEM

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GHEYSARI M.; MIRLATIFI S.M.; HOMAEI MAHDI; ASADI M.E.

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Journal: JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH Year:2007 | Volume:7 | Issue:29 Page(s): 101-118

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Title

NITRATE NITROGEN LEACHING IN A CORN SILAGE FIELD FERTIGATED VIA A SPRINKLER IRRIGATION SYSTEM

Author(s)

GHEYSARI M. | MIRLATIFI S.M. | HOMAEI MAHDI | ASADI M.E. | Issue Writer Certificate

Keywords

NITRATE LEACHINGQ4

SPRINKLER IRRIGATIONQ3

FERTIGATIONQ4

NITROGENQ3

Abstract

Reduction of NO3-N contamination and increasing crop production hinges upon proper management of applied water and NITROGEN fertilizer. In order to practice such management, it is necessary to evaluate all the effective parameters involve in the cycle of NITROGEN in the soil. Such as amount, time, and method of NITROGEN and irrigation water application. The objective of this study was to evaluate the effects of various level of water and NITROGEN application via a SPRINKLER IRRIGATION system on corn silage yield and NITRATE LEACHING. The filed experiment included four levels of irrigation water, (1.13ETc (W1) , 1.0ETc (W2), 0.85ETc (W3), and 0.7ETc (W4)), and three levels of NITROGEN application (200 Kg N ha-1 (N200),150 Kg N ha-1(N150),and 0.0 Kg N ha-1 (N0)), with three replications. Soil moisture extracts were taken for the depths 30 and 60 cm by soil moisture samplers 24 hours after each irrigation and rainfall from all the treatment plots. Nitrate concentration of soil moisture extracts were measured to quantity the amount of NO3-N leaching below root zone. The NO3-N content of the soil up to the depth of 30 and 60 cm at planting and harvesting times and the total crop NITROGEN uptake were measured. The amount of NO3-N leached below the depth of 60 cm in W1, W2, and W4 treatments with 200 Kg NITROGEN applied were 6.92, 6.58, and 0.0 Kg ha-1 and with 150 Kg NITROGEN applied were 5.03, 4.47, and 0.0 Kg ha-1, respectively. No nitrate ieaching occurred from W3 and W4 plots. The major portion of applied fertilizer to W3 and W4 plots remained unused in the soil, a little was absorbed by the crop, and the rest was volatilized. Increasing the amount of applied fertilizer resulted in improving plant NITROGEN uptake, but reduced the ratio of plant uptake to total NITROGEN applied. The amount of NITRATE LEACHING significantly increased in response to over irrigation in W1 plots. Results indicate that the amount of NO3-N leaching during the growing season depends on many factors such as soil initial NITROGEN content, amount of applied NITROGEN fertilizer, crop growth condition, crop NITROGEN uptake, and irrigation-fertilizer management.

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APA: Copy

GHEYSARI, M., MIRLATIFI, S.M., HOMAEI, MAHDI, & ASADI, M.E.. (2007). NITRATE NITROGEN LEACHING IN A CORN SILAGE FIELD FERTIGATED VIA A SPRINKLER IRRIGATION SYSTEM. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 7(29), 101-118. SID. https://sid.ir/paper/28033/en

Vancouver: Copy

GHEYSARI M., MIRLATIFI S.M., HOMAEI MAHDI, ASADI M.E.. NITRATE NITROGEN LEACHING IN A CORN SILAGE FIELD FERTIGATED VIA A SPRINKLER IRRIGATION SYSTEM. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH[Internet]. 2007;7(29):101-118. Available from: https://sid.ir/paper/28033/en

IEEE: Copy

M. GHEYSARI, S.M. MIRLATIFI, MAHDI HOMAEI, and M.E. ASADI, “NITRATE NITROGEN LEACHING IN A CORN SILAGE FIELD FERTIGATED VIA A SPRINKLER IRRIGATION SYSTEM,” JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, vol. 7, no. 29, pp. 101–118, 2007, [Online]. Available: https://sid.ir/paper/28033/en

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