Combined effects of provenance and slow-release fertilizer on nursery and field performance of yellowhorn seedlings

Yellowhorn ( Bunge) has been widely planted for biodiesel production in China, but has frequently shown poor field performance. Container-grown yellowhorn seedlings originating from three Chinese provenances, Wengniute Qi (WQ), Alukeerqin Qi (AQ), and Shanxian (SX), were fertilized with slow-release fertilizer (SRF) at 40, 80, 120, 160 or 200 mg N seedling. Tree growth, survival and nutrient content were measured after one yearâs growth in a greenhouse followed by two years in a field site. Plants from AQ and SX tended to have higher stem and root P contents in the nursery. Higher rates of SRF increased root N, and stem and root P contents. After one year in the nursery, there were a number of interactions between provenance and SRF for plant growth responses and nutrient content in the nursery, however after two years of additional growth in the field, plants from the different provenances generally responded similarly to applied SRF in the nursery, with few interactions. Final plant height was approximately 10% lower in trees from provenance SX but was not affected by application of SRF. Conversely, final trunk diameter and stem and root biomass were unaffected by provenance but increased with higher rates of applied SRF. Our results indicate that application of SRF may be a useful tool to nutrient load yellowhorn in the nursery and facilitate transplanting performance in the field. Overall, optimal nursery and field performance of yellowhorn were observed in provenance AQ at 120â200 mg N seedling SRF. We suggest that growers consider a wider range of yellowhorn provenances and SRF rates (above 200 mg N seedling) to yield even better growth response.Xanthoceras sorbifoliumâ1â1â1

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Slow Release NPK Fertilizer Preparation from Natural Resources

Materials Science Forum ◽

10.4028/www.scientific.net/msf.948.43 ◽

2019 ◽

Vol 948 ◽

pp. 43-48 ◽

Cited By ~ 3

Author(s):

Windia Hanifah ◽

Chandra Wahyu Purnomo ◽

Suryo Purwono

Keyword(s):

Slow Release ◽

Nutrient Content ◽

Release Profile ◽

Chicken Manure ◽

Equal Weight ◽

Nutrient Sources ◽

Slow Release Fertilizer ◽

N Source ◽

Npk Fertilizer ◽

Release Method

Preparation of Natural multi-nutrient Slow Release Fertilizer (NSRF) aims to reduce the environmental burden from some waste and increase the efficiency of fertilizer in releasing nutrient content. In this study,slow-release fertilizer was prepared from all natural components from waste which aredried chicken manure (N source), struvite (P source), and palm empty fruit bunch ash (K source). The equal weight of the three main nutrient sources was used with the addition of starch powder as the binder by 10%, 15% and 20% of the total nutrient mixture. The mixture of all nutrient with binder was granulated using pan granulator. Dried NSRF granule was tested using sand bed release method to observe the release profile of the contained nutrient. Based on the results of a 30-day leaching study, it was found that increasing concentration of binder will reduce the release of the nutrient from NSRF granules.

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Effect of different fertilization on the growth and nutrition of azalea (Rhododendron L.)

Acta Agrobotanica ◽

10.5586/aa.2012.029 ◽

2012 ◽

Vol 65 (4) ◽

pp. 123-132 ◽

Cited By ~ 2

Author(s):

Zenia Michałojć ◽

Michał Koter

Keyword(s):

Slow Release ◽

Nutrient Content ◽

Magnesium Content ◽

Shoot Length ◽

First Year ◽

Fertilizer Rate ◽

Slow Release Fertilizer ◽

Growth And Nutrition ◽

Growing Medium ◽

Second Year

A study on azalea (Rhododendron L.), 'Kilian' and 'Persil', was conducted in 2009–2010. Plants were grown in pots in the open air, in a peat substrate with a pH of 4.8. The effect of the following fertilization methods was studied: I – traditional fertilization (single fertilizers were applied in 2 rates); II – a slow-release fertilizer (Hortiform pH); III – combined fertilization (¼ of the rate of nutrients was applied in the form of single fertilizers and ¾ in the form of Hortiform pH). The slow-release fertilizer Hortiform pH and combined fertilization were applied once in each study year when filling the pots with growing medium. Fertilizers were applied at the basic rate (D1) and at a twice higher rate (D2). In the first year of cultivation, the study showed no significant effect of fertilization method on shoot length in both azalea cultivars, whereas in the second year the longest shoots were found after application of the slow-release fertilizer Hortiform pH. In both years of the study, significantly longer shoots were found in the cultivar 'Persil' after application of the lower fertilizer rate (D1) than after application of the higher fertilizer rate (D2). On the other hand, the study showed that the fertilizer rate had no effect on shoot length in 'Kilian'. After application of the higher fertilizer rate, a higher content of nitrogen and potassium as well as a lower content of phosphorus, calcium, and magnesium were determined in the leaves of both cultivars. The study found the following percentages to be the optimal nutrient content in azalea leaves: 1.88 – 2.20% N; 1.0 – 1.7% K; and 0.60% – 1.20% Ca, while the phosphorus content of 0.09 – 0.25% and the magnesium content of 0.14 – 0.25% were shown to be the lower limit for optimal plant nutrition. After the end of the growing season, a low content of all nutrients in the medium was found in both study years, irrespective of the applied fertilizer rate and fertilization method.

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Field Performance of Three Stock Sizes of Douglas-fir Container Seedlings Grown with Slow-release Fertilizer in the Nursery Growing Medium

New Forests ◽

10.1007/s11056-004-5396-6 ◽

2006 ◽

Vol 31 (1) ◽

pp. 1-24 ◽

Cited By ~ 23

Author(s):

Diane L. Haase ◽

Robin Rose ◽

John Trobaugh

Keyword(s):

Slow Release ◽

Field Performance ◽

Douglas Fir ◽

Container Seedlings ◽

Slow Release Fertilizer ◽

Growing Medium

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Nutrition and Performance of Container-Grown Japanese Black Pine Seedlings

Journal of Environmental Horticulture ◽

10.24266/0738-2898-2.1.9 ◽

1984 ◽

Vol 2 (1) ◽

pp. 9-12 ◽

Cited By ~ 1

Author(s):

Robert D. Hathaway ◽

Carl E. Whitcomb

Keyword(s):

Growth Medium ◽

Slow Release ◽

Growing Season ◽

Black Pine ◽

Slow Release Fertilizer ◽

Shoot Ratio ◽

Japanese Black Pine ◽

Pine Seedlings ◽

And Performance ◽

One Year

Growth of Japanese black pine (Pinus thunbergi Parl.) seedlings in containers was enhanced by incorporating a slow-release fertilizer (Osmocote) and micronutrient source in the growth medium while dolomite was detrimental. Seedlings transplanted into the field showed excellent survival, regardless of propagation treatment, however, plants grown with Osmocote and micronutrients in the container medium were significantly larger after 1 growing season. Root-to-shoot ratio was not related to survival or growth. Container-grown seedlings were larger after 3 months than 2-year-old conventional bed-grown plants and continued to outgrow the bed-grown seedlings after one year in the field.

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Growth Response of Newly Planted Valley Oak Trees to Supplemental Fertilizers

Journal of Environmental Horticulture ◽

10.24266/0738-2898-10.4.242 ◽

1992 ◽

Vol 10 (4) ◽

pp. 242-244

Author(s):

Ed Perry ◽

Gary W. Hickman

Keyword(s):

Growth Response ◽

Slow Release ◽

Single Application ◽

Quercus Lobata ◽

Adequate Nutrition ◽

Valley Oak ◽

Oak Trees ◽

Native Soil ◽

Soluble Fertilizer ◽

One Year

Abstract Growth of Valley Oak (Quercus lobata Neé) trees was not improved by slow-release or soluble fertilizers applied at planting time, nor by a single application of soluble fertilizer one year after planting. The native soil, with nutrient levels typical of newly developed residential and park areas in the region, provided adequate nutrition for good tree growth over the term of the 3-year study.

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THE EFFECTS OF DIFFERENT FERTILIZER APPLICATIONS ON Acer rubrum `AUTUMN BLAZE' AND Acer rubrum `RED SUNSET'ON POT-IN-POT NURSERY PRODUCTION

HortScience ◽

10.21273/hortsci.40.3.884c ◽

2005 ◽

Vol 40 (3) ◽

pp. 884c-884

Author(s):

Kathryn Wimberley ◽

Dr. Pat Williams

Keyword(s):

Slow Release ◽

Block Design ◽

Acer Rubrum ◽

Late Summer ◽

State University ◽

Labor Costs ◽

Slow Release Fertilizer ◽

Nursery Production ◽

Bare Root ◽

One Year

Kentucky West Nursery Cooperative, producers of pot-in-pot trees, needed recommendations on slow-release fertilizer applications due to regional environmental influences affecting production. Murray State University established a pot-in-pot tree nursery to research these influences in 2004. Two different fertilizer applications in three different treatments were tested on one-year old bare-root whips of Acer rubrum `Red Sunset' and `Autumn Blaze'. These trees were planted in 100% pine bark in 15-gallon pots and placed in the sockets with a complete random split-block design. Drip irrigation by spray stakes watered each pot. Nursery floor was kept clean by landscape fabric. New growth was pruned as needed to keep the trees within nursery standards. Tree calipers were measured on 1 Apr. and 1 Dec. 2004 at the beginning and end of growth. Leaves for chlorophyll readings were randomly selected to measure nitrogen uptake in late summer. Measurements were analyzed by SAS 9.1 and results found no significant differences among the treatments either in caliper increase or in chlorophyll levels (SAS, 2002). This experiment recommends a treatment using one application of slow-release fertilizer, versus split or additional applications, provides equal, quality growth of Acer rubrum `Autumn Blaze' and `Red Sunset'. The information gathered will direct fertilizer applications for KWNC and reduce their labor costs.

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Field Performance of ‘Hamlin’ Orange Trees Grown on Various Rootstocks in Huanglongbing-endemic Conditions

HortScience ◽

10.21273/hortsci15550-20 ◽

2021 ◽

pp. 1-10

Author(s):

Sudip Kunwar ◽

Jude Grosser ◽

Fred G. Gmitter ◽

William S. Castle ◽

Ute Albrecht

Keyword(s):

Field Performance ◽

Tree Height ◽

Nutrient Content ◽

Field Trials ◽

Early Years ◽

High Yield ◽

Production Potential ◽

Trunk Diameter ◽

Yield Efficiency ◽

Canopy Volume

Most of the commercially important citrus scion cultivars are susceptible to Huanglongbing (HLB), which is the most devastating disease the citrus industry has ever faced. Because the rootstock can influence the performance of the scion in various ways, including disease and pest tolerance, use of superior rootstocks can assist citrus growers with minimizing the negative effects of HLB. The objective of this study was to assess rootstock effects on the horticultural performance and early production potential of ‘Hamlin’ sweet orange (Citrus sinensis) trees in commercial field settings under HLB-endemic conditions. Two field trials were conducted in different locations in Central and Southeast Florida. The trials were established in 2015 and included 32 diverse diploid and tetraploid rootstock cultivars and advanced selections. One trial was performed in Highlands County, FL, on a poorly drained flatwoods-type site. Another trial was performed in Polk County, FL, on a well-drained sandy Central Florida Ridge site. Horticultural traits including tree height, canopy volume, trunk diameter, canopy health, leaf nutrient content, yield, and fruit quality were assessed during the 2018–19 and 2019–20 production years. Significant differences were found among trees on different rootstocks for most of the measured traits, particularly tree vigor and productivity, but rootstock effects also varied by location. Rootstocks that induced large tree sizes, such as the diploid mandarin × trifoliate orange hybrids ‘X-639’, ‘C-54’, ‘C-57’, and ‘C-146’, also induced higher yield, but with lower yield efficiency. Most of the tetraploid rootstocks significantly reduced tree size, among which ‘Changsha+Benton’, ‘Green-3’, ‘Amb+Czo’, ‘UFR-3’, and ‘UFR-5’ induced high yield efficiency. Therefore, these rootstocks have the potential to be used in high-density plantings. However, trees on some of these small size-inducing rootstocks had a higher mortality rate and were more vulnerable to tropical force winds. This study provides important information for the selection of rootstocks with the greatest production potential in an HLB-endemic environment, especially during the early years of production.

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The Potential of Biogas Slurry and Palm Oil Mill Effluent Slurry as Slow-Release Fertilizer Pellet Through Densification

Planta Tropika Journal of Agro Science ◽

10.18196/pt.v9i2.9588 ◽

2021 ◽

Vol 9 (2) ◽

pp. 90-99

Author(s):

Reni Astuti Widyowanti ◽

Candra Ginting ◽

Rengga Arnalis Renjani

Keyword(s):

Palm Oil ◽

Slow Release ◽

Block Design ◽

Organic Fertilizer ◽

Nutrient Content ◽

Palm Oil Mill Effluent ◽

Cow Dung ◽

Biogas Slurry ◽

Slow Release Fertilizer ◽

Palm Oil Mill

Organic fertilizer can yield higher production compared to regular fertilizer if properly applied. Thus, it can be a solution to improve nutrient content of soil. The biggest source of bio slurry in plantation is from Palm Oil Mill Effluent (POME) and cow dung biogas. This research aimed to analyze the residue’s potential from the result of biogas processing and bio slurry from POME as slow-release fertilizer pellet. Bio slurry was processed into pellet through densification process using pellet mill. The research was arranged in a Randomized Block Design method with five slurry compositions as treatments, including 70:30, 60:40, 50:50, 40:60, and 30:70 (ratio of biogas slurry and POME slurry), each consisted of three replications. According to the data obtained, fertilizer pellets had characteristics of 25 – 29 mm of length, 5.23 – 5.85 mm of diameter, 0.44 – 0.53 g/cm3 of density, 54.78% - 81.96% of durability, and 7.81% - 8.57% of moisture content. Based on density and durability aspects, 30:70 composition was the higher. Macronutrient content of the five compositions were 1.88% - 2.72%, in which on day 22, N, P, and K release was 0.36 – 1.01%, 73.51 – 97.48%, and 3.19 – 7.85%, respectively. Meanwhile, on day 17, the nutrition solution conductivity of all compositions had already reached 0.80 – 1 mS/cm.

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Characteristics of Corn Cobs Waste Activated Carbon for Slow Release Micro Fertilizer Carrier

Sains Tanah - Journal of Soil Science and Agroclimatology ◽

10.20961/stjssa.v16i2.25480 ◽

2019 ◽

Vol 16 (2) ◽

pp. 147

Author(s):

Priyadi Priyadi ◽

Windu Mangiring

Keyword(s):

Activated Carbon ◽

Surface Area ◽

Pore Volume ◽

Slow Release ◽

Nutrient Content ◽

Characteristic Analysis ◽

Activation Temperature ◽

Solubility Test ◽

Corn Cobs ◽

Slow Release Fertilizer

The problem of Fertilization, especially micro fertilizers, is toxication due to the excessive application. Using the concept of slow release fertilizer is a very possible solution to overcome the problem. The objectives of this study are 1) to characterize corn cobs activated carbon for slow release micro fertilizer carrier, 2) to produce and to test of slow release micro fertilizer.The research was carried out by converting corn cobs into activated carbon with an activation temperature of 600 ˚C and water vapor for 90 minutes. Production of slow release fertilizer was carried out by soaking activated carbon in a solution of CuSO4, FeSO4 and ZnSO4 1N for 24 hours. The results of micro fertilizer were then characterized, then the solubility test was carried out. The results of the characteristic analysis showed that some parameters that could be used as fertilizer carriers include, iodine adsorption 404.21 mg g-1, adsorption of methylene blue 16.88 mg g-1, the pore volume of 0.19 cc mg-1 and surface area of 315.77 m2 g-1. While, based on the results of micronutrient solubility test the highest nutrient content that can be absorbed by activated carbon (AA) is found in Cu, followed by Zn and Fe. It relates to the characteristics possessed by activated carbon namely specific surface area, pore volume, and nutrient diameter size.

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