Effect of fertilization on seedling growth, ectomycorrhizal symbiosis, and nutrient uptake in Larixlaricina

1990 ◽  
Vol 20 (2) ◽  
pp. 245-248 ◽  
Author(s):  
P. Chakravarty ◽  
L. Chatarpaul
Keyword(s):  
Slow Release ◽  
Ectomycorrhizal Fungus ◽  
Fertilizer Treatment ◽  
Total Biomass ◽  
High Fertility ◽  
Fertilizer N ◽  
Ectomycorrhizal Symbiosis ◽  
Slow Release Fertilizer ◽  
Fertility Treatments ◽  
Soluble Fertilizer

Container-grown Larixlaricina (Du Roi) K. Koch seedlings were inoculated with the ectomycorrhizal fungus Laccarialaccata (Scop, ex Fr.) Berk and Br. and grown under two levels of slow-release fertilizer (Osmocote) or two levels of soluble fertilizer (N–P–K). Nonmycorrhizal seedlings grew better under high fertility regimes, whereas no significant differences were observed between low and high fertility levels for the mycorrhizal seedlings. Mycorrhizal seedlings had significantly greater root length, total biomass, and a lower shoot:root ratio under all fertility treatments. Ectomycorrhizal development was excellent regardless of fertilizer treatment. Nitrogen, P, K, Ca, and Mg concentrations were significantly higher in the mycorrhizal seedlings than in the nonmycorrhizal seedlings under all fertility regimes.

Inoculation of container-grown Douglas-fir seedlings with basidiospores of Rhizopogonvinicolor and R. colossus: effects of fertility and spore application rate

1985 ◽  
Vol 15 (1) ◽  
pp. 10-13 ◽  
Author(s):  
Michael A. Castellano ◽  
James M. Trappe ◽  
Randy Molina
Keyword(s):  
Slow Release ◽  
Application Rate ◽  
Height Growth ◽  
Douglas Fir ◽  
Low Fertility ◽  
High Fertility ◽  
Slow Release Fertilizer ◽  
Application Rates ◽  
Soluble Fertilizer ◽  
Fertilizer Regimes

Basidiospores of Rhizopogonvinicolor Smith and R. colossus Smith were inoculated onto container-grown Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) seedlings and grown under two levels of soluble fertilizer and one level of slow-release fertilizer. Both fungi formed abundant ectomycorrhizae on more than 54% of feeder roots under the soluble fertilizer regimes. Slow-release fertilizer suppressed mycorrhizal formation by both fungi. Height growth was significantly increased under low fertility with all basidiospore application rates of R. colossus and the three lowest application rates of R. vinicolor. The high fertility regime produced plantable Douglas-fir seedlings with abundant ectomycorrhizae of R. colossus and R. vinicolor.

scholarly journals (133) Influence of Two Types of Fertilizers on the Growth and Development of Tissue-cultured Daylilies Transferred to the Greenhouse

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1087A-1087
Author(s):  
Johnny Carter ◽  
Diondre Palmer ◽  
Lianghong Chen
Keyword(s):  
Growth And Development ◽  
Shoot Growth ◽  
Slow Release ◽  
Block Design ◽  
Maximum Growth ◽  
Water Soluble ◽  
Fertilizer Treatment ◽  
Slow Release Fertilizer ◽  
Randomized Complete Block Design ◽  
Soluble Fertilizer

During Summer 2004, a study was conducted to determine the effect of two types of fertilizers on the growth and development of tissue-cultured daylilies transferred to the greenhouse. Peters 20–20–20 water-soluble fertilizer and a slow-release fertilizer were the two fertilizers evaluated. Peters 20–20–20 fertilizer was used at 0 (control), 50, 100, and 200 mg·L–1 rates. The slow release fertilizer was used at 2.5 g per 10.2 cm pot. Each treatment was replicated four times in a randomized complete-block design. After 6 weeks of growth, the results showed that, when compared to the control, all treatments except for 200 mg·L–1 caused a significant increase in root growth. Shoot growth was significantly increased by the 100 mg·L–1 treatment, while the 200 mg·L–1 and slow-release treatments suppressed shoot growth. Similar to root and shoot growth, the 100 mg·L–1 treatment caused a significant increase in fresh weight, while the 200 mg·L–1 and slow-release treatments caused a reduction. These results imply that the 100 mg·L–1 Peters 20–20–20 fertilizer treatment is the best treatment for maximum growth and development of tissue-cultured daylilies transferred to the greenhouse.

Use of the ectomycorrhizal fungus Laccarialaccata in forestry. II. Effects of fertilizer forms and levels on ectomycorrhizal development and growth of container-grown Douglas-fir and ponderosa pine seedlings

1983 ◽  
Vol 13 (1) ◽  
pp. 89-95 ◽  
Author(s):  
Randy Molina ◽  
John Chamard
Keyword(s):  
Ponderosa Pine ◽  
Ectomycorrhizal Fungus ◽  
Douglas Fir ◽  
Low Fertility ◽  
Fertilizer Treatment ◽  
High Fertility ◽  
Pine Seedlings ◽  
Nursery Stock ◽  
Half Strength ◽  
Soluble Fertilizer

Container-grown Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) and ponderosa pine (Pinusponderosa Dougl. ex Laws.) were inoculated with the ectomycorrhizal fungus Laccarialaccata (Scop, ex Fr.) Berk, and Br. and grown under three levels of soluble fertilizer (low, high, and a combination of low changed to high) and full and half strength of a slow-release fertilizer. Ectomycorrhiza development was excellent for both hosts regardless of fertilizer treatment; percent ectomycorrhizal short roots averaged 93.6 for Douglas-fir and 94.5 for ponderosa pine. Inoculation did not affect the size of Douglas-fir but significantly reduced growth of ponderosa pine under low fertility. L. laccata performed well under high-fertility regimes; production of outplantable nursery stock with well-developed ectomycorrhizae was obtained.

scholarly journals Slow-release fertilizer to increase grain N content in spring wheat

2013 ◽  
Vol 22 (3) ◽  
pp. 318-324
Author(s):  
Ari Rajala ◽  
Pirjo Peltonen-Sainio
Keyword(s):  
Grain Yield ◽  
Spring Wheat ◽  
Nitrogen Availability ◽  
Slow Release ◽  
Grain Filling ◽  
Grain Protein ◽  
Fertilizer Treatment ◽  
Protein Accumulation ◽  
Slow Release Fertilizer ◽  
Total Plant

Low grain protein often restricts the use of grain lots for milling in Finland. Nitrogen availability during grain-filling may restrict grain protein accumulation, particularly in high yielding environments. Slow-release fertilizers could potentially sustain nitrogen availability during the grain-filling period. The aim of this study was to increase plant nitrogen uptake, grain yield and grain protein response of spring wheat cultivar ‘Amaretto’, using combinations of a regular and slow-release compound NPK fertilizer. Fertilizer treatment effects on grain yield was modest, however, slow-release fertilizer treatments lowered grain protein content as well as grain, straw and total plant N compared with control treatment. The total plant N was 10 to 27 kg ha-1 lower following application of slow-release fertilizer. The results clearly indicate that the release of N by the slow-release fertilizer tested in this trial was too slow for cool Finnish growing conditions.

scholarly journals FERTILIZANTE DE LIBERAÇÃO LENTA NO DESENVOLVIMENTO DE MUDAS DE Schinus terebinthifolius e Sebastiania commersoniana

FLORESTA ◽  
2013 ◽  
Vol 43 (1) ◽  
pp. 93 ◽  
Author(s):  
Überson Boaretto Rossa ◽  
Alessandro Camargo Angelo ◽  
Antonio Carlos Nogueira ◽  
Danielle Janaina Westphalen ◽  
Marcos Vinícius Martins Bassaco ◽  
...  
Keyword(s):  
Technical Efficiency ◽  
Slow Release ◽  
Dry Weight ◽  
Production Quality ◽  
Experimental Unit ◽  
Total Biomass ◽  
Schinus Terebinthifolius ◽  
Slow Release Fertilizer ◽  
The City ◽  
Different Doses

 O objetivo do trabalho foi avaliar diferentes doses de fertilizante de liberação lenta (FLL) no desenvolvimento de mudas de Schinus terebinthifolius e Sebastiania commersoniana. O estudo foi realizado na região do Vale do Itajaí (SC), entre março e dezembro de 2009, em viveiro localizado no município de Rio do Sul, com sementes provenientes da própria região. O delineamento experimental foi inteiramente casualizado, com 6 tratamentos em 4 repetições, tendo 40 plantas como unidade experimental. Os tratamentos foram: T1–0 kg (testemunha); T2–2 kg; T3–4 kg; T4–6 kg; T5–8 kg e T6–10 kg de FLL por m³ de substrato-base. Decorridos 189 (aroeira) e 245 (branquilho) dias da semeadura, foram analisadas as variáveis altura total, diâmetro do coleto, biomassa seca da parte aérea, biomassa seca da raiz, biomassa seca total e dose de máxima eficiência técnica. As mudas de aroeira e branquilho tiveram um melhor crescimento com a dose de 10 kg de FLL por m³ de substrato padrão e 6 kg de FLL por m3, respectivamente. Ambas as plantas responderam significativamente ao uso do fertilizante de liberação lenta, apresentando as seguintes doses de máxima eficiência técnica: 9,48 (aroeira) e 5,54 kg.m-3 (branquilho) de Basacote 6M.Palavras-chave:Branquilho; aroeira-vermelha; fertilização; produção de mudas; qualidade de mudas florestais.AbstractSlow release fertilizer in development of Schinus terebinthifolius and Sebastiania commersoniana seedlings. This reserach aimed to evaluate different doses of slow-release fertilizer (FLL) in  Schinus terebinthifolius and Sebastiania commersoniana seedlings development. The study was conducted in Vale do Itajai (SC), between March and December 2009, in a nursery in the city of Rio do Sul, with seeds from the region. The experimental design was completely randomized with 6 treatments in 4 replications, with 40 plants as experimental unit. The treatments were: T1-0 kg (control), T2-2 kg, T3- 4kg-, T4-6 kg; T5-8kg; and T6-10 kg per m³ FLL substrate base. After 189 (aroeira) and 245 (branquilho) days of sowing, the variables analyzed were total height, diameter, shoot dry biomass, root dry weight, total biomass and maximum dose of technical efficiency. The seedlings of aroeira and branquilho had better growth with the dose of 10 kg per cubic meter of FLL standard substrate and 6 kg per m3 of FLL, respectively. Both plants responded significantly to the use of slow release fertilizer, with the following maximum doses of technical efficiency 9.48 (aroeira) and 5.54 kg.m-3 (branquilho) of Basacote 6M.Keywords: Sebastiana; red aroeira; fertilization; seedling production; quality forest seedlings.  

scholarly journals (67) Effect of Two Types of Fertilizers on the Growth and Development of Tissue-cultured Daylilies Transferred to the Greenhouse

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1018C-1018
Author(s):  
Johnny Carter ◽  
Diondre Palmer ◽  
Lianghong Chen ◽  
Surinder Gulia
Keyword(s):  
Growth And Development ◽  
Shoot Growth ◽  
Slow Release ◽  
Block Design ◽  
Maximum Growth ◽  
Water Soluble ◽  
Fresh Weight ◽  
Slow Release Fertilizer ◽  
Randomized Complete Block Design ◽  
Soluble Fertilizer

During Summer 2005, a study similar to that of Summer 2004 was conducted to determine the effect of two type of fertilizers on the growth and development of tissue-cultured daylilies transferred to the greenhouse. Peters 20–20–20 water-soluble fertilizer and a slow-release fertilizer were the two fertilizers evaluated. Peters 20–20–20 fertilizer was used at 0 (control), 50, 100, 200 mg/L rates. The slow-release fertilizer was used at 2.5 g per 10.2-cm pot. Each treatment was replicated four times in randomized complete-block design. After 6 weeks of growth, the results showed that when compared to the control, all treatments except for 200 mg/L caused a significant increase in root growth. Shoot growth was significantly increased by the 100 mg/L treatment, while the 200 mg/L and the slow-release treatments suppressed shoot growth. Similar to the growth of roots and shoots, the 100 mg/L treatment caused significant increase in fresh weight, while both the 200 mg/L and slow-release treatments caused a reduction. Results obtained for Summer 2005 were similar to that of Summer 2004. These results imply that the 100 mg/L Peters 20–20–20 fertilizers treatment is the best treatment for maximum growth and development of tissue-cultured daylilies transferred to the greenhouse.

scholarly journals Fertilizer Composition, Concentration, and Irrigation Method Affect Growth and Development of Oxalis regnellii and O. triangularis

HortScience ◽  
2011 ◽  
Vol 46 (8) ◽  
pp. 1110-1115 ◽  
Author(s):  
Chad T. Miller ◽  
Neil S. Mattson ◽  
William B. Miller
Keyword(s):  
Slow Release ◽  
Treatment Plant ◽  
Dry Weight ◽  
Water Soluble ◽  
Fertilizer Treatment ◽  
Greenhouse Crops ◽  
Overhead Irrigation ◽  
Current Water ◽  
Soluble Fertilizer ◽  
Fertilizer Rates

Oxalis regnellii, the shamrock plant, and O. triangularis are niche ornamental greenhouse crops produced and marketed primarily for their foliage; thus, it is imperative to produce the fullest, most colorful, and blemish-free plants as possible. An experiment was conducted using O. regnellii, comparing two irrigation methods, overhead (drip) irrigation versus subirrigation, in addition to varying 20N–2.2P–16.6K fertilizer concentrations, 50, 100, 200, 300, and 500 mg·L−1 nitrogen (N). Overhead irrigation produced larger plants with increased root mass as compared with subirrigation. Low or high fertilizer concentration (50 mg·L−1 N and 500 mg·L−1 N, respectively) led to reductions in the fresh and dry weight of overhead-irrigated plants compared with intermediate fertilizer rates. At the highest fertilizer treatment, plant height was decreased. Chlorophyll index (based on SPAD readings) increased linearly and quadratically for subirrigated and overhead-irrigated plants, respectively. A second study analyzed the effects of seven different fertilizer formulations on growth of O. regnellii and O. triangularis. The fertilizers used in this study were Jack's LX All Purpose (21N–2.2P–16.6K), Peter's Professional (20N–8.8P–16.6K), Jacks Poinsettia FeED Ca-Mg (15N–1.7P–12.5K), Jack's Petunia FeED Mg (20N–1.3P–15.7K), Peter's Professional Peat-Lite Dark Weather Feed (15N–0P–12.5K), Peter's Excel Cal-Mag (15N–2.2P–12.5K), and the slow-release fertilizer Osmocote® (14N–4.2P–11.6K). Growth of both species was significantly reduced by fertilizers that contained little or no phosphorus (P). Current water-soluble fertilizer recommendations of 21N–2.2P–16.6K or slow-release granule fertilizer of 14N–4.2P–11.6K (Osmocote®) produced acceptable, marketable plants, whereas the best O. regnellii and O. triangularis plants were produced using 15N–2.2P–12.5K and 20N–1.3P–15.7K formulations, likely as a result of the additional calcium (Ca), magnesium (Mg), and iron (Fe) in the mixtures.

scholarly journals Fertilizer Levels and Medium Affect Foliage Plant Growth in an Ebb and Flow Irrigation System

1992 ◽  
Vol 10 (2) ◽  
pp. 81-86 ◽  
Author(s):  
R.T. Poole ◽  
C.A. Conover
Keyword(s):  
Slow Release ◽  
Irrigation System ◽  
Fertilizer Rate ◽  
Slow Release Fertilizer ◽  
Foliage Plant ◽  
Height Increase ◽  
Soluble Fertilizer ◽  
Fertilizer Rates ◽  
Lower Plant ◽  
Ebb And Flow

Abstract Three species of foliage plants were produced with three media, in an ebb and flow irrigation system (experiments 1 and 3) or with overhead manual irrigation (experiments 2 and 4). Expt. 1 used a constant feed program of 24N-3.5P-13K (24-8-16) soluble fertilizer added to the water supply at rates of 0.21, 0.42, 0.63 or 0.84 g/L. In experiments 2, 3 and 4, plants were fertilized with a constant feed program using the soluble fertilizer at 0.63 g/L or with a 19N-2.6P-10K (19-6-12) slow release fertilizer at rates of 2.5, 5.0 or 7.5 g/15 cm (6 in) pot. Plants produced in a Canadian sphagnum peat:pine bark mix were shorter and received lower plant grades compared to Fafard #4 and Vergro Container Mix. Height increase and plant grade for all plants was greater when fertilizer rate was increased from 0.21 to 0.42 g/L (0.79 to 1.58 g/gal), but height increase and plant grade did not improve much as fertilizer rates rose beyond 0.42 g/L (1.58 g/gal). In expt. 3, increase in height and plant grade for plants treated with 0.63 g/L (2.36 g/gal) soluble fertilizer was similar to height increase and plant grade for plants receiving the 5.0 and 7.5 g/15 cm pot slow release fertilizer.

scholarly journals FERTILIZANTE DE LIBERAÇÃO LENTA NO DESENVOLVIMENTO DE MUDAS DE Eucalyptus grandis

FLORESTA ◽  
2014 ◽  
Vol 45 (1) ◽  
pp. 85 ◽  
Author(s):  
Überson Boaretto Rossa ◽  
Alessandro Camargo Angelo ◽  
Itamar Antonio Bognola ◽  
Danielle Janaina Westphalen ◽  
Jaçanan Eloisa Milani
Keyword(s):  
Slow Release ◽  
Positive Response ◽  
Maximum Dose ◽  
Eucalyptus Grandis ◽  
Dry Weight ◽  
Seedling Development ◽  
Total Biomass ◽  
Fresh Weight ◽  
Slow Release Fertilizer ◽  
Base Substrate

Uma das ações mais importantes para aumentar a produção de mudas de essências florestais é a fertilização do substrato. A utilização de fertilizante de liberação lenta (FLL) pode contribuir para a obtenção de mudas de melhor qualidade. O objetivo do trabalho foi avaliar doses crescentes de FLL e fertilizante convencional (FC), bem como comparar esses fertilizantes no desenvolvimento de mudas de Eucalyptus grandis. O estudo foi realizado na região do Vale do Itajaí, SC. Os tratamentos foram a adição de FLL e FC para cada experimento nas seguintes doses de formulado: T1 – 0 kg (testemunha); T2 – 2 kg; T3 – 4 kg; T4 – 6 kg; T5 – 8 kg e T6 – 10 kg.m-3 de substrato-base. Decorridos 174 dias da semeadura, foram analisadas as variáveis altura total, diâmetro do colo, biomassa fresca da parte aérea, biomassa seca da parte aérea, biomassa seca da raiz, biomassa seca total, dose de máxima eficiência técnica e teores de nutrientes da parte aérea das mudas de cada tratamento. Em todos os tratamentos houve resposta positiva no desenvolvimento das mudas, entretanto as mudas tiveram melhor crescimento sob doses entre 9,1 e 12,9 kg.m-3 de fertilizante de liberação lenta.Palavras-chave: Qualidade de mudas; nutrição de mudas; vivericultura; fertilização; substrato. AbstractSlow release fertilizer in development of seedlings of Eucalyptus grandis. One of the most important actions to increase production of seedlings is substrate fertilization. The use of slow release fertilizer (FLL) can contribute to the achievement of best seedlings. The aim of this research was to evaluate increasing doses of FLL and FC, as well as compare these fertilizers in developing seedlings of Eucalyptus grandis. The study was conducted in Vale do Itajai, Santa Catarina State. The treatments were the addition of FLL and HR in each experiment in the following doses: T1 - 0 kg (control), T2 - 2 kg; T3 - 4 kg, T4 - 6 kg; T5 - 8 kg and T6 - 10 kg.m-3 of base substrate. After 174 days of sowing, the variables analyzed were total height, stem diameter, fresh weight of shoot, shoot dry biomass, root dry weight, total biomass and maximum dose of technical efficiency, and nutrient levels of the seedlings of each treatment. In all treatments there was positive response in seedling development, however, the plants had better growth in doses ranging from 9.1 to 12.9 kg.m-3 of slow release fertilizer.Keywords: Seedling quality; seedlings nutrition; cultivation of seedlings; fertilization; substrate.

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