{"product_id":"bypass-flow-nitrogen-losses-in-vertisols-in-tropical-environments-von-charles-onyango","title":"BYPASS FLOW NITROGEN LOSSES IN VERTISOLS IN TROPICAL ENVIRONMENTS","description":"\u003cp\u003eBypass flow is one of the main avenues of fertilizer nitrogen (N) loss in agricultural fields. The magnitude of fertilizer N carried in bypass flow is influenced by soil characteristics, nitrogen species (i.e., NH4+ or NO3-) and rainfall patterns, inter alia. Wetting the soil prior to fertilizer application resulted in significantly (p\u0026lt;0.05) higher bypass flow and mineral N recovered in the effluent than did the no prewetting treatments. Both ammonium- and nitrate-N recovered in the bypass flow increased with rainfall intensity and frequency. Nitrogen source and rate also resulted in significant (p\u0026lt;0.05) increases in mineral N in the effluent. The effect of N source on ammonium-N in the effluent were in the order urea \u0026gt; ammonium sulphate \u0026gt; calcium nitrate, while the effect of N sources on nitrate-N were in the order calcium nitrate \u0026gt;urea = ammonium sulphate. The increase in nitrate-N in the effluent due to fertilizer rate were in the order 200 \u0026gt; 100 \u0026gt; 50 kg N ha-1. Ammonium- N losses were low being in the range 0.1 to 1 %, while nitrate-N losses were high, being in the range 0.02 to 21 % of the applied fertilizer.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783844305951\"\u003e\u003ch3\u003eSubtitle PREDISPOSING FACTORS FOR AMMONIUM- AND NITRATE-NITROGEN LOSS IN VERTISOLS IN THE TROPICAL ENVIRONMENTS\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783844305951","offer_id":39495922679901,"sku":"9783844305951","price":49.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/0077a76f-0507-46b1-acc8-299b6db5893c.jpg?v=1773296513","url":"https:\/\/shop.autorenwelt.de\/products\/bypass-flow-nitrogen-losses-in-vertisols-in-tropical-environments-von-charles-onyango","provider":"Autorenwelt Shop","version":"1.0","type":"link"}