Sokoine University of Agriculture

How much nitrogen would move down? Evaluating the effect of water application regimes on n leaching in the soil

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dc.contributor.author Mthandi, J.
dc.contributor.author Salim, B.A
dc.contributor.author Kahimba, F.C.
dc.contributor.author Tarimo, A.K.P.R
dc.contributor.author Lowole, M.W.
dc.date.accessioned 2016-07-11T14:28:49Z
dc.date.available 2016-07-11T14:28:49Z
dc.date.issued 2015
dc.identifier.uri https://www.suaire.sua.ac.tz/handle/123456789/820
dc.description 8p en_US
dc.description.abstract Nitrogen is the nutrient most often deficient for crop production and its use can result in substantial economic return to farmers. However, when N inputs exceed crop needs, excess N may contaminate water. N Management is therefore important to achieve a balance between profitable crop production and environmentally tolerable levels. The aim of this paper is to evaluate the impact of water application regimes on the leaching of nitrogen. The research study was conducted at Nkango Irrigation Scheme in Kasungu district. Maize (SC 407) planted on Julian day of 2012152 and harvested Julian day of 2012250 was used as test crop in the study. The water regimes were full (100%) water requirement regime (FWRR) of maize plant; 60% of FWRR; and 40% of FWRR. The nitrogen application regime used was 92 N kg/ha which was constant.. The EU-Rotate_N model was run to quantify nitrogen leached below 90cm of the soil profile. The study found out that water application regime has a large influence on N leaching. The study concluded that applied water in the soil should not exceed field capacity of the soil and in such way leaching of nitrogen will be minimised. en_US
dc.language.iso en en_US
dc.publisher Research Journal of Agriculture and Environmental Management en_US
dc.subject N leaching en_US
dc.subject N application regime en_US
dc.subject Typical Nitrogen Placement Rate en_US
dc.subject EU-Rotate_N model en_US
dc.subject Nitrogen management en_US
dc.subject Irrigation schemes en_US
dc.title How much nitrogen would move down? Evaluating the effect of water application regimes on n leaching in the soil en_US
dc.type Article en_US


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