Use of an Organic Fertilizer Also Having a Biostimulant Action to Promote the Growth of Young Olive Trees

In 2019–2020, trials were carried out with the aim of evaluating the possibilities of using an organic fertilizer, reported to have a biostimulant action, for promoting the growth of young olive trees. The experiments were implemented using both potted and field-grown trees. The effects of the organic fertilizer were evaluated with respect to trees treated with a chemical fertilizer; for potted trees a control without any fertilization was also used. Therefore, the compared treatments were: organic fertilization vs. chemical fertilization or no fertilization in the experiment with potted trees; organic fertilization vs. chemical fertilization in the experiment with field-grown trees. Non-fertilized potted trees had the lowest growth. The organic fertilizer, with respect to the chemical one, determined higher growth in both potted and field-grown trees (+22–29% of the increment of the trunk cross sectional area). In potted trees, it determined a rapid elongation of the stem (+30% of the increment of tree height with respect to chemically fertilized trees) and this likely favored the development of a higher number of leaves, which, together with an increase in their photosynthetic activity (in August, +27% with respect to chemical fertilized trees), created conditions for higher assimilate production and in turn greater tree growth. Trees in the field showed that the greater growth was not obtained at the expenses of reproductive growth, which increased to the same degree as the vegetative growth. Overall, the results support the biostimulant action of the organic fertilizer and indicate the possibility of its use to improve the growth of young olive trees.

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Nutrition and growth of potted gerbera according to mineral and organic fertilizer

Ornamental Horticulture ◽

10.14295/aohl.v21i2.750 ◽

2015 ◽

Vol 21 (2) ◽

pp. 251 ◽

Cited By ~ 1

Author(s):

Francielly Torres Santos ◽

Fernanda Ludwig ◽

Luiz Antonio de Mendonça Costa ◽

Mônica Sarolli Silva de Mendonça Costa

Keyword(s):

Dry Matter ◽

Organic Fertilizer ◽

Mineral Fertilizer ◽

Organic Fertilizers ◽

State University ◽

Organic Fertilization ◽

Alternative Source ◽

Aerial Parts ◽

Number Of Leaves ◽

Culture Growth

In order to meet the growing market of gerbera, it is necessary to develop studies that maximize its production, especially using organic fertilizer. In order to assess the nutrition and growth of potted gerbera conducted with mineral and organic fertilization, an experiment in a greenhouse was done, located at Western Paraná State University, Brazil. The experimental design was made in randomized blocks, with four replications and five treatments. The treatments were defined according to the source of fertilization, mineral (NPK) or organic. The organic fertilization were obtained by diluting in water four organic compost of poultry slaughter waste, obtained from in the composting process, in order to adjust electrical conductivity. The solution of the compost was used as organic fertigation, making the organic treatments. The liquid organic fertilizer, as well as irrigation of mineral treatment, was performed manually once a day. At the end of vegetative and reproductive periods, the levels of N, P, K, Ca, Mg and Fe were quantified in the plant tissue. At the same time, biometric parameters were assessed (number of leaves, plant diameter, leaf area, dry matter of aerial parts, number of heads, inflorescence dry matter, stem height, head diameter and diameter stem). The liquid organic fertilizers, obtained by composting procession of poultry slaughter waste, can be used as alternative source for potted gerbera nutrition, since they provide better or higher culture growth than the mineral fertilizer.

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Mitigation of High-Temperature Damage by Application of Kaolin and Pinolene on Young Olive Trees (Olea europaea L.): A Preliminary Experiment to Assess Biometric, Eco-Physiological and Nutraceutical Parameters

Agronomy ◽

10.3390/agronomy11091884 ◽

2021 ◽

Vol 11 (9) ◽

pp. 1884

Author(s):

Aurora Cirillo ◽

Stefano Conti ◽

Giulia Graziani ◽

Christophe El-Nakhel ◽

Youssef Rouphael ◽

...

Keyword(s):

Antioxidant Activity ◽

High Temperature ◽

Stomatal Conductance ◽

Cross Sectional Area ◽

Tree Seedlings ◽

Sectional Area ◽

Dry Matter Partitioning ◽

Cross Sectional ◽

Positive Effects ◽

Olive Trees

Various products are used to mitigate the negative effects of abiotic stress in olive trees. The aim of the research was to examine an anti-transpirant product (Vapor Gard®, V) and a kaolin- based product (Manisol, K) effect on the growth of two-year-old olive tree seedlings under high temperature. The study was conducted in a greenhouse on trees of a native cultivar of Campania (cv. Salella) grown in pot during the growing season from May to September 2020. The experimental design included two products: di-1-p-menthene (product V) and kaolin (product K), applied five times at 20 day intervals compared with a control. The following biometric, physiological, and nutraceutical parameters were evaluated: stomatal conductance, chlorophyll a fluorescence, Soil Plant Analysis Development (SPAD) index, relative water content (RWC), shoots growth, total leaf area per plant, trunk cross-sectional area, dry matter partitioning, total polyphenols, and antioxidant activity. The results obtained showed that the application of di-1-p-menthene (V) was able to induce a significant improvement of shoots growth (+37.22%) and trunk cross-sectional area (+46.60%) and a reduction of the stomatal conductance and an increase of leaf RWC values. Application with kaolin had positive effects on the total polyphenol content, with an increase over the control of 240.33% and higher antioxidant activity values. Further studies are necessary to determine the effect of these products on the biometric, physiological and nutraceutical parameters of mature olive trees cultivated in open field conditions.

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GROWTH RESPONSE OF Bauhinia Variegata L. TO INOCULATION AND ORGANIC FERTILIZATION

Revista Árvore ◽

10.1590/1806-90882019000100004 ◽

2019 ◽

Vol 43 (1) ◽

Author(s):

Caliane da Silva Braulio ◽

Rafaela Simão Abrahão Nóbrega ◽

Flávia Melo Moreira ◽

Ângela Santos de Jesus Cavalcante dos Anjos ◽

Janildes de Jesus da Silva ◽

...

Keyword(s):

Dry Mass ◽

Additional Treatment ◽

Initial Growth ◽

Stem Height ◽

Organic Fertilization ◽

Aerial Portion ◽

Chemical Fertilization ◽

Number Of Leaves ◽

Bauhinia Variegata ◽

Organic Compost

ABSTRACT The objective of this work was to evaluate the initial growth of Bauhinia variegata L. when inoculated and fertilized with different proportions of organic compost. The experiment was performed in greenhouse in a completely random factorial (2 x 5) + 1 design, with 9 replicates, constituted by the presence or absence of inoculation, five proportions of organic compost:soil (0:100, 20:40, 40:60, 60:40 and 80:20; v/v) and one additional treatment with chemical fertilization without inoculation. Ninety days after sowing, the plant height, stem diameter, number of leaves, radicular length, dry mass of the aerial portion, dry mass of roots, total dry mass, Dicksosn's quality index (IQD), contents of nitrogen and carbon and the C/N ratio of the dry mass of the aerial portion, were evaluated. The inoculation with diazotrophic bacteria stimulated growth in height, stem height/diameter ratio, dry mass of the aerial portion, dry mass of roots, total dry mass and the foliar contents of nitrogen and carbon in seedlings of B. variegata L. Seedlings grown using organic compost showed better development when compared to seedlings grown only in soil with or without chemical fertilization. Seedlings grown with formulated substrate at a proportion of 16:84 (organic compost:soil + inoculation) exhibited higher IQD, therefore, this constitutes the recommended proportion for production of B.variegata L. seedlings.

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Chemical suppression of spininess in Geneva 30 apple rootstocks and its residual effects on nursery tree characteristics

Australian Journal of Experimental Agriculture ◽

10.1071/ea98144 ◽

2000 ◽

Vol 40 (3) ◽

pp. 451

Author(s):

T. Jacyna ◽

J. Barnard ◽

J. N. Cummins ◽

...

Keyword(s):

Tree Height ◽

Cross Sectional Area ◽

Fatty Alcohols ◽

Residual Effects ◽

Naphthaleneacetic Acid ◽

Sectional Area ◽

Apple Rootstocks ◽

Cross Sectional ◽

Cumulative Length ◽

Tree Characteristics

A proprietary mixture of butralin + fatty alcohols or naphthaleneacetic acid were applied to reduce or prevent spininess in Geneva 30 apple rootstock. Rootstock liners were foliar treated with butralin + fatty alcohols or naphthaleneacetic acid, or hand-cleared. Spine regrowth responses to both compounds, expressed as spine cumulative length, were rate dependent and decreased as the concentration of the compound increased (P<0.003). Before budding, all rates of butralin + fatty alcohols or naphthaleneacetic acid (except naphthaleneacetic acid at 25 mg/L ), or hand-cleared reduced the number of spines and their cumulative length compared with controls. The rootstocks were budded to apple cv. ‘Jonagold’. None of the treatments caused significant spininess recurrence, or stimulated root suckering. All treatments reduced rootstock stem cross-sectional area, except butralin + fatty alcohols at 250 and 750 mg/L in comparison with control rootstock stem cross-sectional area. Budded rootstocks were transplanted into the nursery and grown for an additional year without chemical treatment. No adverse effects of previous treatments on tree characteristics were found, except a significant reduction in tree height caused by naphthaleneacetic acid at 200 mg/L. No differences in quality characteristics between trees grown on chemically or manually deshooted Geneva 30 rootstocks were found.

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Seedlings of cassava varieties are responsive to organic fertilization

Semina Ciências Agrárias ◽

10.5433/1679-0359.2019v40n5supl1p2151 ◽

2019 ◽

Vol 40 (5Supl1) ◽

pp. 2151

Author(s):

Inácio Mucutai Jala ◽

Caeline Castor da Silva ◽

Juraci Souza Sampaio Filho ◽

Eder Jorge Oliveira ◽

Rafaela Simão Abrahão Nóbrega

Keyword(s):

Organic Fertilizer ◽

Dry Mass ◽

Production Costs ◽

Organic Fertilizers ◽

Healthy Plant ◽

Initial Growth ◽

Organic Fertilization ◽

Randomized Design ◽

Number Of Leaves ◽

Cassava Varieties

In Brazil, there is already a recommendation for the production of cassava seed-cuttings for the production of seedlings originated from micropropagation, which may be extended for the production of seedlings obtained from cuttings from healthy plant stems, in order to avoid the spread of diseases. Therefore, it is essential to establish adequate cultivation substrates of easy acquisition which may stimulate the growth of seedlings, both to reduce the nursery period, as well as the seedling’s production costs. The objective of this work was to evaluate the effect of organic fertilizers made from bovine and goat manures, and tree pruning residues, to produce seedlings of three cassava varieties. The plots were set in a completely randomized design, with six replicates. The treatments consisted of three cassava genotypes (BRS Formosa, BRS Tapioqueira and BRS Kiriris) and five proportions of organic fertilizer: soil (0: 100, 20:80, 40:60, 60:40 and 80:20). The evaluations were performed 30 and 45 days after planting (DAP). There were isolated effects for shoot dry mass, total dry mass, leaf area and number of leaves. Interactions were verified for root length, chlorophyll a and total chlorophyll index, root dry mass and shoot dry mas/root dry mass ratio 45 DAP. The organic fertilizer stimulated the initial growth of cassava seedlings in the three varieties studied in the proportion of 50% of organic fertilizer and 50% of Latosol. Varieties BRS Formosa and BRS Kiriris showed the highest Dickson Quality Scores. Genotypes reacted efficiently to organic fertilization and can be propagated on these easily acquisition cultivation substrates.

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Impact of Nursery Root Pruning and Tree Orientation at Planting on Growth and Anchorage

Arboriculture & Urban Forestry ◽

10.48044/jauf.2016.014 ◽

2016 ◽

Vol 42 (3) ◽

Author(s):

Edward Gilman ◽

Maria Paz ◽

Chris Harchick

Keyword(s):

Root Architecture ◽

Acer Rubrum ◽

Tree Height ◽

Root Pruning ◽

Bending Stress ◽

Sectional Area ◽

Cross Sectional ◽

Trunk Diameter ◽

Quercus Virginiana ◽

Second Year

Root pruning by shaving 12 L container root balls when shifting to 51 L containers did not impact Acer rubrum L. or Quercus virginiana Mill. root architecture within the top 12 cm of planted 51 L root balls five years later, despite marked differences at planting, and had no impact on tree height or trunk diameter increase. Root pruning in the nursery did not affect bending stress required to tilt Acer trunks up to five degrees (anchorage) either one, two, or three years after landscape planting. In contrast, anchorage was greater the second year after planting Quercus that were root pruned. Rotating trees 180 degrees at planting from their orientation in the nursery had no impact on Acer or Quercus anchorage, tree height, or trunk diameter. Rotating oak (not maple) trees 180 degrees at planting increased root cross-sectional area growing from the hot (south) side of the root ball when trees were rotated at planting.

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The Effect of Preplant Monoammonium Phosphate Fertilizer and Compost on the Growth and Yield of 'Macoun' Apple Trees

HortScience ◽

10.21273/hortsci.40.6.1854 ◽

2005 ◽

Vol 40 (6) ◽

pp. 1854-1856 ◽

Cited By ~ 5

Author(s):

Renae E. Moran ◽

James R. Schupp

Keyword(s):

Tree Growth ◽

Untreated Control ◽

Tree Height ◽

Phosphate Fertilizer ◽

Growth And Yield ◽

Sectional Area ◽

Monoammonium Phosphate ◽

Cumulative Yield ◽

Apple Trees ◽

Cross Sectional

'Macoun'/B.9 apple (Malus ×domestica Borkh.) trees were planted in May 1998 in ± compost or ± monoammonium phosphate (MAP) for a total of four preplant treatments: 1) 90 g phosphorus (P) per tree, 2) 128 kg compost per tree, 3) 90 g P and 128 kg compost per tree, and 4) and an untreated control. MAP did not increase tree growth or yield in any year of the study. Compost increased canopy width into the sixth year after planting, and increased tree height and trunk cross-sectional area (TCA) into the seventh year. Annual yield was increased by compost in the fifth and seventh years, but not fourth or sixth year after planting. Compost increased cumulative yield in the sixth and seventh years.

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Dynamic of Phenolic Compounds, Antioxidant Activity, and Yield of Rhubarb under Chemical, Organic and Biological Fertilization

Plants ◽

10.3390/plants9030355 ◽

2020 ◽

Vol 9 (3) ◽

pp. 355 ◽

Cited By ~ 1

Author(s):

Alexandru Cojocaru ◽

Laurian Vlase ◽

Neculai Munteanu ◽

Teodor Stan ◽

Gabriel Ciprian Teliban ◽

...

Keyword(s):

Antioxidant Activity ◽

Phenolic Compounds ◽

Antioxidant Capacity ◽

Organic Fertilizer ◽

Antioxidant Compounds ◽

Nutritional Management ◽

Organic Fertilization ◽

Total Polyphenols ◽

Chemical Fertilization ◽

Edible Parts

In recent years, rhubarb is being increasingly cultivated, as it provides early yields when the vegetables supply to market is deficient and shows high levels of both polyphenols content and antioxidant capacity in edible parts. In 2017, we investigated crops of the rhubarb cultivar Victoria to the fifth year of production. Comparisons were performed between three root phase fertilizations—chemical (NPK 16-16-16®), organic (Orgevit®), and biological (Micoseeds MB®)—plus an unfertilized control. The determinations of polyphenols, the antioxidant capacity, and the yield indicators from the stalks (petioles) of rhubarb were made at each out of the 10 harvests carried out. The highest yield (59.16 t·ha−1) was recorded under the chemical fertilization. The total polyphenols content and antioxidant capacity varied widely from 533.86 mg GAE·g−1 d.w. and 136.86 mmol Trolox·g−1 d.w., respectively in the unfertilized control at the last harvest, up to 3966.56 mg GAE·g−1 d.w. and 1953.97 mmol Trolox·g−1 d.w. respectively under the organic fertilization at the four harvest. From the results of our investigation, it can be inferred that the chemical fertilization was the most effective in terms of yield, whereas the sustainable nutritional management based on organic fertilizer supply led to higher antioxidant compounds and activity.

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Peach Tree Growth as Influenced by Grass Species Used in a Killed-sod Planting System

HortScience ◽

10.21273/hortsci.25.5.514 ◽

1990 ◽

Vol 25 (5) ◽

pp. 514-515 ◽

Cited By ~ 2

Author(s):

W.V. Welker ◽

D.M. Glenn

Keyword(s):

Tree Growth ◽

Prunus Persica ◽

Tree Height ◽

Bare Soil ◽

Cross Sectional Area ◽

Grass Species ◽

Peach Tree ◽

Sectional Area ◽

Cross Sectional ◽

Planting System

Peach [Prunus persica (L.) Batsch] trees were planted in killed sod developed from five different grasses. Tree growth was evaluated within the killed-sod treatments, as well as between killed-sod and bare soil treatments. Canopy width, tree height, and trunk cross-sectional area were all greater in the killed-sod treatments than in the bare soil treatments. All five grasses tested were acceptable for developing a killed-sod mulch. Chemical names used: N-(phosphonomethyl) glycine (glyphosate); N1(3,4-dichlorophenyl)-N,N-dimethylurea (diuron); 5-chloro-3-(1-1-dimethylethyl)-6-methyl-2,4(1H,3H)-pyrimidinedione (terbacil).

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Pelvic Canal Narrowing Caused by Triple Pelvic Osteotomy in the Dog

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0038-1633130 ◽

1994 ◽

Vol 07 (03) ◽

pp. 110-113 ◽

Cited By ~ 6

Author(s):

D. L. Holmberg ◽

M. B. Hurtig ◽

H. R. Sukhiani

Keyword(s):

Postoperative Complications ◽

Pelvic Osteotomy ◽

Cross Sectional Area ◽

Sectional Area ◽

Cross Sectional ◽

Canal Width ◽

Operative Complications ◽

Post Operative Complications

SummaryDuring a triple pelvic osteotomy, rotation of the free acetabular segment causes the pubic remnant on the acetabulum to rotate into the pelvic canal. The resulting narrowing may cause complications by impingement on the organs within the pelvic canal. Triple pelvic osteotomies were performed on ten cadaver pelves with pubic remnants equal to 0, 25, and 50% of the hemi-pubic length and angles of acetabular rotation of 20, 30, and 40 degrees. All combinations of pubic remnant lengths and angles of acetabular rotation caused a significant reduction in pelvic canal-width and cross-sectional area, when compared to the inact pelvis. Zero, 25, and 50% pubic remnants result in 15, 35, and 50% reductions in pelvic canal width respectively. Overrotation of the acetabulum should be avoided and the pubic remnant on the acetabular segment should be minimized to reduce postoperative complications due to pelvic canal narrowing.When performing triple pelvic osteotomies, the length of the pubic remnant on the acetabular segment and the angle of acetabular rotation both significantly narrow the pelvic canal. To reduce post-operative complications, due to narrowing of the pelvic canal, overrotation of the acetabulum should be avoided and the length of the pubic remnant should be minimized.

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