2012
DOI: 10.1590/s0104-77602012000200008
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Doses of controlled-release fertilizer for production of rubber tree rootstocks

Abstract: This experimental study aimed to evaluate the effects of doses of controlled-release fertilizer (ALL) on the development of rubber tree rootstocks. The fertilizer used was Osmocote®, scheduled to be released for 8-9 months and with the following composition: N (15%), P 2 O 5 (9%), K 2 O (12%), Mg (1%), S (2.3%), B (0.02%), Cu (0.05%), Fe (1%), Mn (0.06%), Mo (0.02%) and Zn (0.05%). A randomized block design was used, with four treatments and eight replicates of 20 plants per plot. The controlledrelease fertili… Show more

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Cited by 13 publications
(13 citation statements)
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“…As expected, seedling height, RCD, biomass, DQI, and nutrient uptake all increased with application rate from A1 to A3, consistent with findings by many others (Irino et al 2004, Klooster et al 2012, Zamunér Filho et al 2012, Santelices et al 2013, Fu et al 2017. The decrease of growth parameters from A3 to A4 may result from toxic uptake (Oliet et al 2004).…”
Section: Discussionsupporting
confidence: 90%
See 1 more Smart Citation
“…As expected, seedling height, RCD, biomass, DQI, and nutrient uptake all increased with application rate from A1 to A3, consistent with findings by many others (Irino et al 2004, Klooster et al 2012, Zamunér Filho et al 2012, Santelices et al 2013, Fu et al 2017. The decrease of growth parameters from A3 to A4 may result from toxic uptake (Oliet et al 2004).…”
Section: Discussionsupporting
confidence: 90%
“…CRF can also be used to enhance nursery seedling quality through nutrition-loading before transplanting (Irino et al 2004, Zamunér Filho et al 2012, Klooster et al 2012. In southern nurseries of China, one of the widely-used CRFs by nursery managers is Apex™ (J.R. Simplot Company, USA) which contains nitrogen (N), phosphorus (P, P2O5), and potassium (K, K2O) in a ratio of 18-8-8 and is typically applied at 2.5 kg m -3 .…”
Section: Introductionmentioning
confidence: 99%
“…Zamunér Filho et al (2012) também observaram uma resposta quadrática positiva ao aumento das doses de Osmocote ® para as variáveis altura, massa seca da parte aérea, raiz e total no desenvolvimento de porta enxertos de seringueira (Hevea brasiliensis (Willd. ex Adr.…”
Section: Resultsunclassified
“…Zamuner Filho et al (2012), avaliando doses de fertilizantes de 0, 3, 6 e 9 g L -1 de substrato, contento a formulação N (15%), P 2 O 5 (9%), K 2 O (12%), Mg (1%), S (2,3%), B (0,02%), Cu (0,05%), Fe (1%), Mn (0,06%), Mo (0,02%) e Zn (0,05%), obteve maiores valores de matéria seca da parte aérea com a dose de 6 g L -1 de fertilizante, equivalendo a 69,52 g planta -1 . As soluções nutritivas representaram diferença significativa (p < 0,01) de porcentagem de plantas de seringueira aptas à enxertia (PAE %) (Tabela 5).…”
Section: Tratamentosunclassified
“…Uma alternativa promissora e com aceitação crescente entre viveiristas consiste na aplicação de fertilizantes via fertirrigação, pois, aumenta a eficiência de seu uso (as perdas por evaporação superficial são reduzidas), reduzindo a demanda por mão de obra e o custo com máquinas, além de flexibilizar a época de aplicação, podendo as doses recomendadas serem fracionadas, conforme a necessidade da cultura (Zamuner Filho, 2012).…”
unclassified