scholarly journals Seedling quality of Agonandra brasiliensis in response to different Osmocote® doses and recipient volumes

2021 ◽  
Vol 10 (1) ◽  
pp. e55010111903
Author(s):  
Eduardo Rodrigues Mota ◽  
Oscar José Smiderle ◽  
Luiz Fernandes Silva Dionisio ◽  
Aline das Graças Souza ◽  
Raiovane Araújo Montenegro ◽  
...  
Keyword(s):  
Controlled Release ◽  
Factorial Design ◽  
Tree Species ◽  
Stem Height ◽  
Monthly Basis ◽  
Collar Diameter ◽  
Set Up ◽  
Positive Effect ◽  
Different Doses

The objective of this work was to evaluate seedlings quality of the tree species Agonandra brasiliensis under different doses of the controlled release fertilizer (CRF) Osmocote® and recipient volumes. The experiment was set up in a factorial design for two recipient volumes (1.8 L and 2.2 L) and five CRF doses (0.0; 0.5; 1.0; 2.0; and 3.0 g L-1 of substrate). Four repetitions of one plant each were used. After transplanting seedlings, stem height, stem collar diameter, and the robustness index (RI) were measured in a monthly basis during eight months. The highest seedlings growth was observed with the CRF Osmocote® dose of 2.0 g L-1 and recipients of 2.2 L. The treatment with CRF dose of 2.0 g L-1 in 240 days presented higher initial accumulated growth in height of A. brasiliensis seedlings (mean = 31.38 cm). Seedlings under the dose of 2.0 g L-1 presented 85.90% increase of stem height in relation to the control (substrate without CRF). CRF Osmocote® had positive effect on growth of A. brasiliensis seedlings. Growth was influenced by the different CRF doses and recipient volumes, both for the variables stem height and stem collar diameter and for the RI. The dose 2.0 g L-1 allowed greater accumulated growth in height and diameter in 240 days.

scholarly journals IBA levels and substrates in the rooting of UENF/CALIMAN 02 hybrid papaya minicuttings in a semi-hydroponic system

2018 ◽  
Vol 40 (1) ◽  
Author(s):  
Márcio José Vieira de Oliveira ◽  
Edilson Romais Schmildt ◽  
Ruimário Inácio Coelho ◽  
José Augusto Teixeira do Amaral
Keyword(s):  
Factorial Design ◽  
Growth Regulator ◽  
Adventitious Roots ◽  
Coconut Fiber ◽  
Hydroponic System ◽  
Hoagland Solution ◽  
Mother Plants ◽  
Set Up ◽  
Plastic Trays

Abstract Mini-cutting is a technique with large applications in various crops, mainly due to the increase in the percentage and quality of adventitious roots, reducing time for the formation of clonal seedlings. The aim of this study was to evaluate IBA levels and substrates on the rooting of UENF/CALIMAN 02 hybrid papaya mini-cuttings. To perform the experiment, papaya mini-cuttings were taken from mother plants grown in pots in greenhouse, induced to produce shoots through pruning and growth regulator applications. Mini-cuttings were fixed in vermiculite or coconut fiver substrates placed in alveolate trays with 4.5x4.5x5.0 cm cells, and styrofoam trays were placed in plastic trays where different IBA levels were added in a modified Hoagland solution. After 45 days, rooted buds were transplanted to plastic pots of 600 mL of volume with soil, sand, well-cured bovine fertilizer, in the proportion of 3:1:1, remaining for 45 days. When they were taken from pots, roots were carefully washed, and the length of shoots, length of the largest root, dried mass of shoots and radicular system and root percentage were measured. The experiment was set up in a randomized complete block 5 x 2 factorial design, with 5 IBA levels: 0; 2.5; 5.0; 7.5 and 10 mg L-1, two substrates: vermiculite and coconut fiber, three replicates, with six plants per replicate. IBA levels of 5.0 mg L-1 and substrate vermiculite are the most adequate for the rooting of ‘UENF/CALIMAN 02’ papaya mini-cuttings in semi-hydroponic system in alveolate styrofoam trays with 4.5x4.5x5.0 cm cells.

scholarly journals Influence of preemergently applied herbicides on the yield and quality of caraway achenes (Carum carvi L.)

2008 ◽  
Vol 56 (2) ◽  
pp. 255-266
Author(s):  
Antonín Vaculík
Keyword(s):  
Essential Oil ◽  
Standard Length ◽  
Oil Content ◽  
Competitive Ability ◽  
Weed Species ◽  
Yield And Quality ◽  
Significant Difference ◽  
Positive Effect ◽  
Different Doses

Caraway has very low competitive ability against most of weed species. Therefore, it is important to choose a suitable herbicide control, especially at biennial caraway. The experiments with the herbicides applied in caraway were found in pure growth, with variety Kepron (with standard length of ve­ge­ta­ti­ve period). The aim of the trials was to find out the differences at achenes yiled and essential oil content after the treatment by the various herbicides, applied preemergently. Also, the selective ac­ti­vi­ty of individual herbicides was tested, including the different doses. The herbicides used in the ex­pe­ri­ments had enough level of selektivity on the plants of caraway. They had a positive effect on the yiled comparing to non-treated control variant in all observed years. There was no statistically significant difference in essential oil kontent between the treated variants and non-treated control. On the basis of these results, the most suitable herbicide was chosen for the „minor“ registration for caraway.

scholarly journals Controlled-Release Fertiliser and Substrates on Seedling Growth and Quality in Agonandra brasiliensis in Roraima

2020 ◽  
Vol 8 (3) ◽  
pp. 70 ◽  
Author(s):  
Aline das Graças Souza ◽  
Oscar José Smiderle ◽  
Raiovane Araújo Montenegro ◽  
Thiago Komuro Moriyama ◽  
Thiago Jardelino Dias
Keyword(s):  
Controlled Release ◽  
High Standard ◽  
Dry Weight ◽  
Organic Substrate ◽  
Shoot Height ◽  
Shoot Dry Weight ◽  
Slow Development ◽  
Collar Diameter ◽  
Total Dry Weight

The aim of this study was to verify the effect of different substrates, in the presence and absence of controlled-release fertiliser, on the growth and morphological quality of seedlings of Agonandra brasiliensis Miers ex Benth. & Hook.f., in the state of Roraima, Brazil. The experimental design was a 2 * 5 factorial scheme, with and without the addition of 1.0 g L-1 NPK 18-05-09 formulation controlled-release encapsulated fertiliser (Forth CoteR) and five substrates. The following were evaluated: shoot height (H), collar diameter (CD), increase in shoot length (IncH) and collar diameter (IncCD), shoot dry weight (SDW), root dry weight (RDW), total dry weight (TDW) and Dickson quality index (DQI). The use of NPK 18-05-09 formulation controlled-release fertiliser (Forth CoteR) in a medium-sand substrate is recommended for obtaining plants of Agonandra brasiliensis of greater robustness, balance of biomass distribution, and a high standard of quality. In the substrate composed of soil from the cerrado + carbonised rice husks - CRH + organic substrate (2:1:1), the addition of NPK 18-05-09 formulation Forth CoteR is not necessary to obtain Agonandra brasiliensis plants of good morphological quality. Substrate 3, composed of soil + CRH (3:1), with or without the addition of NPK 18-05-09 formulation Forth CoteR, is not recommended for producing plants of Agonandra brasiliensis, due to the slow development and reduced morphological quality of the plants.

scholarly journals Controlled-Release Fertilizer in the Production of Seedlings of Anonna cacans Warm

2020 ◽  
Vol 8 (3) ◽  
pp. 125 ◽  
Author(s):  
Oscar José Smiderle ◽  
Aline Das Graças Souza ◽  
Renata Diane Menegatti
Keyword(s):  
Controlled Release ◽  
Nutritional Status ◽  
Initial Growth ◽  
Medium Sand ◽  
Promising Alternative ◽  
Controlled Release Fertilizer ◽  
Root Collar Diameter ◽  
Collar Diameter ◽  
Root Collar ◽  
Different Doses

The use of controlled-release fertilizers is a promising alternative for supplying nutrients during the initial growth of nursery seedlings. The aim of this study was to verify the effects of different doses of controlled-release fertilizer (CRF) on initial growth and nutritional status in seedlings of Anonna cacans Warm. The seeds were originally sown in a seedbed and then, after initial seedling development, were transplanted into polyethylene bags containing a substrate of washed medium sand, to which different doses of CRF had been added before transplanting. The experimental design was completely randomised, with four treatments, five doses of Osmocote® NPK 19-06-10 formulation (0, 1, 2, 4 and 8 g L-1 of substrate), with four replications, each replication comprising three seedlings (one in each container). Increases in root-collar diameter and plant height were determined throughout the experimental period (6 months) from data collected every 30 days after transplanting. At the end of the experiment the following were evaluated: height, root-collar diameter, N concentration, chlorophyll index, chlorophyll concentration (a, b and total) and leaf area. Root-collar diameter and height showed a positive linear response to increases in the fertilizer dose. From a 4 g L-1 dose of CRF, the nutrient supply added to the substrate of medium sand optimises the initial phase of plant growth and guarantees the adequate nutritional status of Anonna cacans, and can be suggested as a viable technique for use in forest nurseries, and one which results in efficient use of the input material and avoids fertilizer wastage.

scholarly journals Effects of rates of nitrogen on yield and yield components of winter triticale

2016 ◽  
Vol 61 (2) ◽  
pp. 127-135 ◽  
Author(s):  
Dragana Lalevic ◽  
Milan Biberdzic
Keyword(s):  
Yield Components ◽  
Nutritional Value ◽  
Forage Crop ◽  
Winter Triticale ◽  
Genetic Potential ◽  
Yield And Yield Components ◽  
Effect On Yield ◽  
Set Up ◽  
Positive Effect ◽  
Different Doses

Due to the high genetic potential for yield and favourable nutritional value, triticale is a promising plant species. For achieving high and stable yields, it is necessary to have favorable agroclimatic conditions of the locality, variety and advanced agricultural techniques, with special emphasis on fertilizing. This study examines the effect of increasing rates of nitrogen on yield and yield components of five cultivars of winter triticale: Odisej, Kg-20, Triumph, Rtanj and Tango. The three-year trial (2009-2012), which was set up in a randomized block system with three replications, included control and three different doses of nitrogen fertilization (0, 60, 90 and 120 kg ha-1). In all variants of fertilization, 80 kg ha-1 P2O5 and K2O were added beside nitrogen. The obtained results showed that the use of nitrogen had a positive effect on yield and yield components in all variants and in all cultivars. The variety Tango had the highest average grain yield, while the variety Kg-20 had the lowest. Also, Tango had the highest value of the 1000 grain mass and the number of grains per spike, while Triumph had the highest value of hectoliter weight. The application of fertilizers led to a very large and significant increase of yield compared with the control. Accordingly, all studied cultivars had the highest yield with the highest quantities of nitrogen (120 kg ha-1). Considering that triticale is intended mainly for feeding livestock, the results of these studies would be valuable in terms of its growing as a forage crop as well as in terms of its breeding for grain quality and productivity.

The use of a concentrate of low molecular weight soybean substances to increase the productivity of quail and improve the dietary qualities of their meat

2020 ◽  
Vol 1 (4) ◽  
pp. 56-62
Author(s):  
V. E. Podol'nikov ◽  
◽  
L. I. Podobed ◽  
Yu. V. Petrova ◽  
V. M. Bachinskaya ◽  
...  
Keyword(s):  
Live Weight ◽  
Tetrahymena Pyriformis ◽  
Essential Amino Acids ◽  
Poultry Meat ◽  
Feed Additive ◽  
Control Group ◽  
Negative Effect ◽  
Positive Effect ◽  
Different Doses

The article presents data on a scientific experiment conducted on quails of the Japanese breed. Data on the influence of the prebiotic drug «BioAxel» on the physiological parameters of quails have been established. The dynamics of the live weight of quails when feeding different dosages of the drug is estimated. In the experiment, the positive effect of different doses of the feed additive «BioAxel» on the average daily and gross growth of experimental birds (by 8,2–16,5% compared to the control) was established. The most effective method was feeding part of the BioAxel (5% of the feed weight) plus another part (4%) with water. A comprehensive veterinary and sanitary examination of quail slaughter products was also carried out when using the prebiotic drug «BioAxel»in the diet. It was found that this drug does not have a negative effect on the quality of meat. At the same time, the indicators of biological safety are within the limits of the norm established by current regulatory documents. In terms of nutritional value, the meat of quails raised with the use of the prebiotic drug «BioAxel» exceeds the meat of quails from the control group. The content of essential amino acids significantly increased in poultry meat of the experimental groups, and the total biological value in the test with Tetrahymena pyriformis exceeded the control parameters.

scholarly journals Efficiency of application of watersoluble fertilizers in various doses when growing table watermelon under the conditions of the Volgograd region

2020 ◽  
pp. 10-13
Author(s):  
T. G. Koleboshina ◽  
N. B. Ryabchikova
Keyword(s):  
Negative Impact ◽  
Agricultural Practices ◽  
Water Soluble ◽  
Experimental Station ◽  
Volgograd Region ◽  
Similar Dose ◽  
Soluble Fertilizer ◽  
Positive Effect ◽  
Different Doses

Relevance. The article presents the results of studies to determine the effectiveness of the use of new types of water-soluble fertilizers in different doses. The obtained results will be used for the development of new agricultural practices and improvement of technologies for growing table watermelon. Materials and methods. The studies were carried out in the Volgograd Trans-Volga region at the Bykovskaya melon selection experimental station in 2018-2019. We studied the dose of water-soluble fertilizer on the quality of the watermelon table variety Triumph. Results. Studies have found that the use of water-soluble fertilizers has a positive effect on the yield and its structure. The advantage of using water-soluble fertilizer Hakafos with the content of nutrients in equal proportions dose of 900 g/100 l, yield 7.2-10.6% more compared to other studied water-soluble fertilizers with a similar dose and 44.7% more compared to pure control (without treatments). Evaluation of the results showed a positive effect of water-soluble fertilizers on the marketable qualities of watermelon fruits. In variants with the use of water-soluble fertilizers, the fruits are larger, 18.1-34.1% more compared to the control (without treatments), and 4.2-9.2% more yield of standard products. Studies have found that the use of water-soluble fertilizers do not have a negative impact on the quality and environmental purity of products, the amount of nitrates in the fruit does not exceed the maximum permissible values. The use of this agricultural technique in the technology of cultivation of table watermelon, as studies have shown, can significantly improve the economic performance of the production of this product.

Удобрение огурца в Западной Сибири

2018 ◽  
Author(s):  
Т.А. Кuznetsova ◽  
N.А. Коlpakov
Keyword(s):  
Organic Fertilizers ◽  
Control Variant ◽  
Positive Effect ◽  
Different Doses

Показано, что длительное применение как минеральных, так и органических удобрений в различных дозах и сочетаниях положительно влияет на урожайность огурца. Установлено, что в условиях 14-й ротации урожайность на всех вариантах опыта была выше, чем на контрольном варианте и составила 16,4–22,3 т/га, против 16,0 т/га в контроле.The authors show that the long-term use of both mineral and organic fertilizers in different doses and combinations has a positive effect on the yield of cucumber. It was found that under 14 rotation conditions the yield on all variants of the experiment was higher than on the control variant and amounted to 16.4–22.3 t/ha, against 16.0 t/ha on the control.

Possibilities and prospects of conservative therapy for endometriosis, as a chronical progressing disease (review of literature)

GYNECOLOGY ◽  
2020 ◽  
Vol 22 (1) ◽  
pp. 14-18 ◽  
Author(s):  
Tatyana Yu. Pestrikova ◽  
Elena A. Yurasova ◽  
Igor V. Yurasov
Keyword(s):  
Quality Of Life ◽  
Abnormal Uterine Bleeding ◽  
Modern Medicine ◽  
Reproductive Age ◽  
Aim Analysis ◽  
Scientific Publications ◽  
Terra Incognita ◽  
Positive Effect

Relevance. Endometriosis is a common gynecological disease that affects up to 10% of women of reproductive age worldwide and is the main cause of pain and infertility. Endometriosis is a disease, although it has been known for a long time, nevertheless, in many ways it represents terra incognita for modern medicine. Aim. Analysis of literature on the feasibility of long-term and the use of the drug dienogest 2 mg (Vizanne), which has a positive effect on the quality of life of patients with endometriosis. Materials and methods. To write this review, a search was made for domestic and foreign publications in Russian and international search engines (PubMed, eLibrary, etc.) over the past 13 years. The review included articles from peer-reviewed literature. Results. The review presents data on the difficulties of verifying the diagnosis of endometriosis due to a combination of this pathology with pain, infertility, abnormal uterine bleeding. The pathogenesis of the origin of endometriosis-associated pain is presented. The efficacy of the use of the drug dienogest (Vizanne), which has a powerful antiproliferative effect that reduces the main symptoms of endometriosis (pain, bleeding), is substantiated. The expediency of long-term and safe use of the drug dienogest (Vizanne), which has a positive effect on the quality of life of patients with endometriosis, has been proved. Conclusions. Numerous scientific publications confirm the feasibility of prolonged use of the drug dienogest (Vizanne), to achieve remission during endometriosis.

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