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	Provedor de dados Ciencia e Investigación Agraria (2) Chilean J. Agric. Res. (1) Autor Restrepo-Díaz,Hermann (3) Chingaté-Cruz,Oscar F (1) Díaz-Leguizamón,Jhon J (1) Garcés-Varon,Gabriel (1) García-Castro,Alexandra (1) Sánchez-Reinoso,Alefsi D (1) Mais... Palavra-chave Chlorophyll fluorescence (1) Foliar sprays (1) Grain yield (1) Growth rates (1) Leaf area index (1) Leaf nitrogen concentration (1) Nitrate leaching (1) Nitrogen use efficiency (1) PSII efficiency (1) Planting date (1) Proline (1) Rice (1) Soil fertilizer (1) Solar radiation (1) Tillers (1) Unfilled Spikelet percentage (1) Mais... Tipo do documento Journal article (3) Ano 2016 (1) 2015 (1) 2013 (1) País Chile (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Evaluation of fertilization with uncoated urea and 3,4-dimethylpyrazole phosphate (DMPP)-coated urea on nitrogen leaching and rose (Rosa spp.) yield Chilean J. Agric. Res. García-Castro,Alexandra; Restrepo-Díaz,Hermann. 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... Tipo: Journal article Palavras-chave: Chlorophyll fluorescence; Leaf nitrogen concentration; Nitrate leaching; Nitrogen use efficiency. Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200011 Growth and yield of rice cultivars sowed on different dates under tropical conditions Ciencia e Investigación Agraria Garcés-Varon,Gabriel; Restrepo-Díaz,Hermann. Rice plants are susceptible to low light or high temperature conditions during the reproductive and maturity stages. Two rice cultivars, Fedearroz 50 ('F50') and Fedearroz 733 ('F733'), were planted on three planting dates, January 1st (PD1), February 15th (PD2) and April 1st (PD3), to expose them to different climatic conditions during the different stages of rice development. The experiment was a factorial arrangement. Of the various weather parameters, solar radiation fluctuated the most among the three different planting dates, with PD1 having the highest number of days with values ≥ 450 cal·cm-2·d-1. The yield components were influenced by the planting time. PD3 showed the lowest number of tillers per unit of area and the highest percentage... Tipo: Journal article Palavras-chave: Grain yield; Leaf area index; Planting date; Rice; Solar radiation; Tillers; Unfilled Spikelet percentage. Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000200008 The effect of foliar applications of a bio-stimulant derived from algae extract on the physiological behavior of lulo seedlings (Solanum quitoense cv. Septentrionale) Ciencia e Investigación Agraria Díaz-Leguizamón,Jhon J; Chingaté-Cruz,Oscar F; Sánchez-Reinoso,Alefsi D; Restrepo-Díaz,Hermann. The effect of foliar applications of a bio-stimulant derived from algae extract on the physiological behavior of lulo seedlings (Solanum quitoense cv. Septentrionale). Cien. Inv. Agr. 43(1):25-37. Seaweed extracts are used as nutritional supplements, biostimulants, or biofertilizers in agriculture and horticulture to increase plant growth and yield. In this experiment, foliar applications of bio-stimulant derivate from seaweed extract were tested on plant growth, leaf gas exchange properties, and proline accumulation in lulo seedlings cultivated under greenhouse conditions. Lulo plants were split into four treatments: (i) plants with soil fertilizer; (ii) plants treated only with foliar bio-stimulant sprays; (iii) a combination of soil fertilizer plus a... Tipo: Journal article Palavras-chave: Foliar sprays; Growth rates; Proline; PSII efficiency; Soil fertilizer. Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000100003 Registros recuperados: 3 Primeira ... 1 ... Última

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