| dc.creator | García-Castro,Alexandra | |
| dc.creator | Restrepo-Díaz,Hermann | |
| dc.date | 2013-06-01 | |
| dc.date.accessioned | 2019-04-24T21:19:39Z | |
| dc.date.available | 2019-04-24T21:19:39Z | |
| dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200011 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/55770 | |
| dc.description | The negative impact of N over-fertilization has acquired importance in rose (Rosa spp.) growers in Colombia. The nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) has been considered a valuable alternative to diminish the N losses by leaching and to enable more efficient N use efficiency in crops. The objective of the present work was to study the effect of DMPP on the mineral N (NH4+- N and NO3--N) content in soil and water leaching, and physiological characteristics of rose plants. A greenhouse experiment was performed for 10 wk. Four-year-old ’Charlotte’ rose cultivars grafted on ’Natal Briar’ were grown in soil and fertirrigated daily with a complete nutrient solution containing 170 mg N L-1. Two N fertilizers (uncoated urea [UA], and urea + 1% DMPP [UDMPP]) were used. Results showed that UDMPP did not show any advantages on dry mass accumulation, N use efficiency, leaf area, number of marketable stems, SPAD readings, chlorophyll fluorescence, and leaf N concentration. Despite all these results, the addition of the inhibitor reduced mean NO3-N concentrations in the percolated water by 65.81%. These results suggest that UDMPP could be a valuable tool to reduce NO3-- N leaching losses by retaining applied N in the ammoniacal form. | |
| dc.format | text/html | |
| dc.language | en | |
| dc.publisher | Instituto de Investigaciones Agropecuarias, INIA | |
| dc.relation | 10.4067/S0718-58392013000200011 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Chilean journal of agricultural research v.73 n.2 2013 | |
| dc.subject | Chlorophyll fluorescence | |
| dc.subject | leaf nitrogen concentration | |
| dc.subject | nitrate leaching | |
| dc.subject | nitrogen use efficiency | |
| dc.title | Evaluation of fertilization with uncoated urea and 3,4-dimethylpyrazole phosphate (DMPP)-coated urea on nitrogen leaching and rose (Rosa spp.) yield | |
