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 Influence of radiation level on plant growth, yield and quality of essential oil in carqueja

2006 ◽  
Vol 30 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Fabiano Guimarães Silva ◽  
José Eduardo Brasil Pereira Pinto ◽  
Maria das Graças Cardoso ◽  
Evandro A. Nascimento ◽  
David Lee Nelson ◽  
...  
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Growth Yield ◽  
Radiation Level ◽  
Long Period ◽  
Yield And Quality ◽  
Four Levels ◽  
Baccharis Trimera ◽  
Essential Oil Yield

In this research it was studied the influence of the radiation intensity on growth and on the essential oil yield of Baccharis trimera. The plants growth was studied under four levels of radiation: 100, 60, 50 and 20% during a 259-day long period. Plants were then evaluated for height, number of nodes, branches, stem diameter (at the height of the colon), biomass formation, and content and composition of the oil. The highest level of radiation caused increases in all of the variables evaluated, except for height, which was reduced with increasing radiation. Essential oil content also increased with increasing level of radiation.

scholarly journals Effect of organic manures, PGPR and micronutrients on yield and quality enhancement in ajwain (Trachyspermum ammi L)

2021 ◽  
pp. 100-106
Author(s):  
G S Thanuja ◽  
B Srinivasulu ◽  
K M Yuvaraj ◽  
K. Giridhar
Keyword(s):  
Essential Oil ◽  
Seed Yield ◽  
Oil Content ◽  
Foliar Application ◽  
Seed Priming ◽  
Organic Manures ◽  
Combined Application ◽  
Yield And Quality ◽  
Essential Oil Yield

Experiments were conducted for two consecutive years during 2017-19 to study the effect of organic manures, PGPR and micronutrients on yield and quality of ajwain seed. Farm yard manure (FYM) and vermicompost (VC) were used as organic sources at 50% and 75% recommended dose of nitrogen (RDN) as basal dose. PGPRs namely Azospirillum lipoferum, Bacillus megaterium and Frateuria aurantia were used for seed priming. Micronutrients namely ZnSO4 and Fe2SO4 were applied thrice as foliar application @ 0.5% first before flowering, second at 50% flowering and third during grain formation. The results revealed that highest number of umbels plant-1, umbellets umbel-1, number of fruits umbellet-1, seed yield plant-1, seed yield hectare-1, straw yield, biological yield, test weight of seeds and essential oil yield were recorded with the application of 50% RDN through VC, which was on par with 50% RDN through FYM, seed priming with Azospirillum and foliar application of zinc with respect to their individual effect. Maximum essential oil content, fixed oil content and thymol content were also observed in case of application of 50% RDN through VC, seed priming with Azospirillum and foliar application of zinc individually. Highest Benefit Cost Ratio (BCR) of 3.33 was recorded with combined application of 50% of RDN through FYM along with seed priming with Azospirillum and foliar spray of Zn at 0.5%. The integrated use of organic manures, PGPRs and micronutrients could also exert significant influence on yield and quality of Ajwain. It was observed that highest seed yield, yield attributing characters and essential oil yield  and quality parameters were recorded with combined application of 50% of RDN through vermicompost along with seed priming with Azospirillum and foliar application of zinc which was statistically on par with application of 50% of RDN through FYM  along with seed priming with Azospirillum and foliar application of zinc.

scholarly journals Influence of Organic and Inorganic Fertilizers on Coriander (Coriandrum sativum L.) Agronomic Traits, Essential Oil and Components under Semi-Arid Climate

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1427
Author(s):  
Gulen Ozyazici
Keyword(s):  
Essential Oil ◽  
Seed Yield ◽  
Harvest Index ◽  
Agronomic Traits ◽  
Climatic Conditions ◽  
Coriandrum Sativum ◽  
Inorganic Fertilizers ◽  
Yield And Quality ◽  
Biological Yield

Environmental contamination and the excessive use of inorganic fertilizers resulting in stagnant yields of field crops which necessitate the utilization of combined fertilization approach under changing climatic conditions. Current study was aimed to clarify the influence of several fertilizer sources (chemical, organic, organomineral fertilizers) on yield and quality of coriander (Coriandrum sativum L.). The results revealed that the fertilizer sources significantly affected the yield of coriander cultivars. The absence of “Year x Variety x Fertilizer Type” interactions for any of the noted parameters signaled that the detected “Variety x Fertilizer Type” interactions were constant regardless of the year factor. The recorded values of traits according to fertilizer sources different for the plant height from 61.85 to 69.67 cm, number of branches from 5.98 to 7.71 (piece/plant), number of umbels per the main umbel from 5.62 to 7.18 pieces, seed yield from 1.06 to 1.66 t/ha, the biological yield from 4.29 to 5.70 t ha−1, harvest index from 25.29 to 29.41%, essential oil ratio from 0.29 to 0.33%, and essential oil yield from 3.1 to 5.6 L ha−1. Erbaa variety was observed to be superior over the rest of the varieties producing the maximum values of 6.5 L ha−1 of essential oil, 0.36% essential oil content, 30.9% harvest index, 1.81 t/ha seed yield, and 5.9 t ha−1 biological yield with the treatment of chemical fertilizers.

scholarly journals Influence of basic soil tillage methods on fresh yield and quality of winter rape cultivars

2020 ◽  
Vol 15 (4) ◽  
pp. 335-342
Author(s):  
Anvar Sh. Gadzhikurbanov
Keyword(s):  
Crop Yields ◽  
Maximum Yield ◽  
Soil Tillage ◽  
Flowering Stage ◽  
Winter Rape ◽  
Yield And Quality ◽  
Significant Difference ◽  
Weed Infestation ◽  
The Republic

The development of rational system of basic soil tillage results in formation of sufficiently high crop yields. A two-factor field experiment was carried out to address these issues when cultivating winter rape cultivars on light chestnut soils of the Primorsko-Caspian sub-province of the Republic of Dagestan. VEM (standard), Elvis and Meteor winter rape cultivars were studied in the experiment. The following methods of soil tillage were studied: real tillage (control), subsoil tillage. The research revealed that there was no significant difference in agrophysical indicators between the soil cultivation variants. Data on weed infestation of winter rape fields showed that the number of weeds and their weight increased significantly after subsoil tillage. At the budding stage, the number of weeds increased 2.1-fold compared to the control (real tillage), and the weight of weeds increased 1.88-fold. During flowering stage, these indicators were 2.2 times higher. The maximum yield in all variants of the experiment was formed by Elvis cultivar - 44.9 and 41.4 t/ha, respectively, which is more than VEM (standard) and Meteor cultivars by 20.4 t/ha (7.9 %) and 20.0 t/ha (8.7 %), respectively. The yield of Meteor cultivar in these variants was also high and amounted to 41.6 and 38.1 t/ha, respectively, which was higher by 11.5 and 10.4 % compared with the standard. The greatest increase in the fresh yield was provided by real tillage. On average, the yield increased by 8.7 % for varieties in comparison with subsoil cultivation. Elvis cultivar formed the best quality indicators, followed by Meteor cultivar.

scholarly journals YIELD OF PERENNIAL GRASSES AND SOIL FERTILITY OF SOD-PODZOLIC SOIL IN CASE OF LONG-TERM APPLICATION OF MINERAL FERTILIZERS

2021 ◽  
Vol 250 ◽  
pp. 71-77
Author(s):  
A. Yu. Gavrilova ◽  
◽  
A. M. Konova ◽  
Keyword(s):  
Perennial Grasses ◽  
Mineral Fertilizers ◽  
Yield And Quality ◽  
Mobile Forms ◽  
Unit Dose ◽  
Phosphorus And Potassium ◽  
Higher Doses ◽  
Positive Effect

The article considers the effect of increasing doses and various combinations of mineral fertilizers applied to the cover crop on the yield and quality of a mixture of perennial grasses of two - years use, as well as the effect of fertilizers on the agrochemical parameters of sod-podzolic light loamy soil. The objects of the study were Stodolich meadow clover and Leningradskaya 204 meadow timothy grass. The studies were carried out in two crop rotations - with standard and reduced single doses of mineral fertilizers. The research results showed that in the years (VIII rotation) when the unit dose of fertilizers was increased to N20P20K25, the yield of perennial grasses was higher compared to the harvest in the VII rotation. The most appropriate dose in the VII rotation on perennial grasses of the 1st year was N30P30K45, on grasses of the 2nd year - doses of N30P30K45 and N40P40K60. In the VIII rotation, the highest yield of perennial grasses of the 1st year of use was obtained at a dose of N160P160K200 (8.4 t / ha), of grasses of the 2nd year of use at doses of N80P80K100 and N100P100K125 (6.5 t / ha). Positive effect of increasing doses of mineral fertilizers on the content of soil organic matter has been noted. On the contrary, the soil acidity increased from 4.7 to 4.3 units with an increase of mineral doses. Higher doses of fertilizers increased the content of mobile forms of phosphorus and potassium in the soil.

scholarly journals Study on the Improvement of Essential Oil Quality and Its Repellent Activity of Betel Leaves Oil (Piper betle l.) from Indonesia

2018 ◽  
Vol 34 (6) ◽  
pp. 2913-2926 ◽  
Author(s):  
Dante Alighiri ◽  
Edy Cahyono ◽  
Willy Tirza Eden ◽  
Ersanghono Kusuma ◽  
Kasmadi Imam Supardi
Keyword(s):  
Citric Acid ◽  
Essential Oil ◽  
Sodium Carbonate ◽  
Iron Content ◽  
Oil Quality ◽  
Acid Value ◽  
Piper Betle ◽  
Significant Difference ◽  
Main Component

The study to improve the quality of Indonesia betel leaves oil is done by treatment of citric acid and sodium carbonate. The treatment showed that the iron content and acid value were reduced optimally in the addition of 5% (w/w) citric acid (12 hours, 50oC) and 5% (w/w) sodium carbonate (9 hours, 50oC) yielded 0.45 mg/L of iron content and 1.00 mg/g of acid value, respectively. The main component of Indonesia betel leaves oil are 4-allyl phenylacetate. The descriptive sensory analysis showed that there were differences between betel leaves oil from Bogor compared with Boyolali and Makassar. There is a significant difference that the content of betel leaves oil from Bogor contains an isoeugenol compound of 20.71% while, Boyolali and Makassar contain eugenol of 17.02 and 19.21%, respectively. The study of the insect repellency indicated that Indonesia betel leaves oil potentially used as mosquito of Aedes aegypti repellent.

scholarly journals Optimized supercritical CO2 extraction conditions on yield and quality of torch ginger (Etlingera elatior (Jack) R.M. Smith) inflorescence essential oil

2020 ◽  
Vol 154 ◽  
pp. 112581
Author(s):  
Anis Asyila Marzlan ◽  
Belal J Muhialdin ◽  
Nur Hanani Zainal Abedin ◽  
Nameer Khairullah Mohammed ◽  
Muna Mahmood Taleb Abadl ◽  
...  
Keyword(s):  
Essential Oil ◽  
Supercritical Co2 ◽  
Supercritical Co2 Extraction ◽  
Yield And Quality ◽  
Etlingera Elatior

Effect of harvest date on the yield and quality of the essential oil of peppermint

1993 ◽  
Vol 73 (3) ◽  
pp. 815-824 ◽  
Author(s):  
William A. Court ◽  
Robert Pocs ◽  
Robert C. Roy
Keyword(s):  
Essential Oil ◽  
Plant Biomass ◽  
Essential Oil Composition ◽  
Harvest Date ◽  
Mentha Piperita ◽  
Oil Composition ◽  
Yield And Quality ◽  
Loamy Sand Soil ◽  
Physical And Chemical

A field experiment was conducted from 1989 to 1991 on a Fox loamy sand soil to study the effects of harvest date on selected agronomic, physical and chemical characteristics of peppermint (Mentha piperita L.). Plant biomass and essential oil yields increased throughout the season to a maximum in very late August to early September. Menthol, neomenthol, and menthyl acetate concentrations increased in the essential oil with plant development. The amount of menthone and isomenthone was highest in immature plants. The concentrations of menthofuran and pulegone in the essential oil corresponded to the amount of flower bloom in the peppermint. Changes during the season in the concentrations of piperitone, terpinene-4-ol, α-terpineol, 1,8-cineole, limonene, γ-terpinene, terpinolene, α-terpinene, α-pinene, β-pinene, 3-octanol, β-myrcene, Linalool, sabinene, caryophyllene and Germacrene-D were typically quite small. In general, these preliminary results indicate that peppermint can be grown successfully on the coarse-textured soils of Ontario. Key words: Mentha piperita L., peppermint, essential oil, essential oil composition, harvesting date

scholarly journals Effects of N, P, K and S application on yield and quality of white jute (Corchorus capsularis L.) var. BJC-2197

2012 ◽  
Vol 21 (2) ◽  
pp. 109-116
Author(s):  
Sayma Khanom ◽  
Sonia Hosssain ◽  
Shahid Akhtar Hossain
Keyword(s):  
Growth Yield ◽  
Quality Parameters ◽  
Point Of View ◽  
Corchorus Capsularis ◽  
Yield And Quality ◽  
S Application ◽  
Positive Effect ◽  
S Fertilizers ◽  
Analysis Point

A field experiment was conducted at Bangladesh Jute Research Institute (BJRI) to observe the response of N, P, K and S on a pre?released white jute (Corchorus capsularis) var. BJC?2197. The experiment was carried out by applying N, P, K, S fertilizers in ten combinations including control. From the experiment it was observed that all the treatments had significant positive effect over control on growth, yield and quality parameters. The highest fiber yield (3.21 t/ha) and stick yield (6.58 t/ha) were recorded with N90P5K30S10 kg/ha treatment. However, the best quality fiber was found with combination of N90P15K30S10 kg/ha treatment. From the economic analysis point of view, it was found that combination of N90P5K30S10 kg/ha was higher (2.30) than N90P15K30S10 kg/ha (2.04). So the former can be considered as the best combination for var. BJC?2197 in terms of BCR, yield and quality. Dhaka Univ. J. Biol. Sci. 21(2): 109?116, 2012 (July) DOI: http://dx.doi.org/10.3329/dujbs.v21i2.11508

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