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

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.

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

Journal of Spices and Aromatic Crops ◽

10.25081/josac.2021.v30.i1.6576 ◽

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.

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

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis ◽

10.11118/actaun200856020255 ◽

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.

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Effect of arsenic on trichome ultrastructure, essential oil yield and quality of Ocimum basilicum L.

Medicinal Plant Research ◽

10.5376/mpr.2015.05.0006 ◽

2015 ◽

Cited By ~ 1

Author(s):

S. Biswas

Keyword(s):

Essential Oil ◽

Ocimum Basilicum ◽

Oil Yield ◽

Yield And Quality ◽

Essential Oil Yield

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Environmental influence over the emblements and content of the caraway essential oil (Carum carvi L.)

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis ◽

10.11118/actaun200755050083 ◽

2007 ◽

Vol 55 (5) ◽

pp. 83-94

Author(s):

Jaroslav Králík ◽

Miroslav Jůzl ◽

Blanka Kocourková

Keyword(s):

Essential Oil ◽

Cover Crop ◽

Oil Content ◽

Environmental Influence ◽

Oil Yield ◽

Vegetative Period ◽

Qualitative And Quantitative ◽

Carum Carvi ◽

Essential Oil Yield

The work deals with the possibility of improvement of qualitative and quantitative parameters of caraway (Carum carvi L.). The yield of the achenes is not satisfactory during last years and qualitative demands are clarify in correspondence to the market. The possibilities of this variation can be found in growing technology and in variety spectrum. The influence of weather is inconsiderable. Therefore, the experiments with three varieties were found (PROCHAN, KEPRON and REKORD). They were cultivated in cover crop and as pure growth on three sites. The yield components were evaluated in all variants: the yield of the achenes from m2, HTS (the weight of thousand seeds in g), the essential oil content in % and essential oil yield in kg.ha–1. On the basis of the results from the experiments we can make following conclusions. The highest yield was recorded in Šumperk site with cover crop. The varieties did not affect the yield. HTS was different on the sites, the highest HTS had the achenes from Telč. The differences were determined between vegetative periods. Also the essential oil content, similarly as the HTS, was influenced by the vegetative period and by the site. The essential oil yield corresponded with the essential oil content and with the yield of the achenes. The vegetative period almost always affected yield and the quality of caraway fundamentally. There were no differences among the varieties for all studied traits.

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Improving Carrot Yield and Quality through the Use of Bio-slurry Manure

Sustainable Agriculture Research ◽

10.5539/sar.v2n1p164 ◽

2012 ◽

Vol 2 (1) ◽

pp. 164 ◽

Cited By ~ 3

Author(s):

Agnes Jeptoo ◽

Joseph N Aguyoh ◽

Mwanarusi Saidi

Keyword(s):

Block Design ◽

Growth Yield ◽

Continuous Cultivation ◽

Quality Parameters ◽

Soluble Solids ◽

Daucus Carota L ◽

Yield And Quality ◽

Four Levels ◽

And Performance

<p>Continuous cultivation of farms has led to decline in soil fertility due to constant removal of nutrients leading to reduction of carrot (Daucus carota L.)<strong> </strong>yields. A field study was carried out at Egerton University, Horticulture Research and Teaching field in two seasons (October 2010 to January 2011 and February to May 2011) with the aim of investigating the effects of decomposed cattle bio-slurry manure on carrot growth and performance. The experimental design was a Randomized Complete Block Design (RCBD) with 3 replications. Treatments comprised four levels (0, 2.6, 5.2 and 7.8 t/ha) of decomposed bio-slurry manure. Growth, yield and quality parameters were recorded and used to discern the treatment effects. Application of bio-slurry manure generally improved growth, yield and quality of carrots. Application of 7.8 t/ha of bio-slurry increased yields by 8.8% in season 1 and 23.5% in season 2 compared to the control. Leaf numbers, plant height, dry weights of shoot and roots and root volume were also generally higher for the 7.8 t/ha treatment compared to other treatments. Total Soluble Solids of roots from plant treated with 7.8 t/ha were higher by 12.7% in season 1 and 13.2% in season 2 compared to the control. The study recommends 7.8 t/ha of bio-slurry manure for enhanced yield and quality of carrot.</p>

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Differential response of genotype × environment on phenology, essential oil yield and quality of natural aroma chemicals of five Ocimum species

Industrial Crops and Products ◽

10.1016/j.indcrop.2016.04.001 ◽

2016 ◽

Vol 87 ◽

pp. 210-217 ◽

Cited By ~ 13

Author(s):

Rajendra P. Patel ◽

Rakshapal Singh ◽

B.R. Rajeswara Rao ◽

R.R. Singh ◽

Abhilasha Srivastava ◽

...

Keyword(s):

Essential Oil ◽

Differential Response ◽

Oil Yield ◽

Yield And Quality ◽

Ocimum Species ◽

Essential Oil Yield

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Effect of Molybdenum Rate on Yield and Quality of Lettuce, Escarole, and Curly Endive Grown in a Floating System

Agronomy ◽

10.3390/agronomy8090171 ◽

2018 ◽

Vol 8 (9) ◽

pp. 171 ◽

Cited By ~ 14

Author(s):

Alessandra Moncada ◽

Alessandro Miceli ◽

Leo Sabatino ◽

Giovanni Iapichino ◽

Fabio D’Anna ◽

...

Keyword(s):

Nutrient Solution ◽

Nutritional Quality ◽

Growth Yield ◽

Leafy Vegetables ◽

Morphological Alteration ◽

Nitrate Content ◽

Yield And Quality ◽

Floating System ◽

Four Levels

Molybdenum (Mo) is required in enzymes involved in a number of different metabolic processes, and is crucial for the survival of plants and animals. The influence of nutrient solutions containing four levels of molybdenum (0, 0.5, 1.5, and 3.0 µmol/L) on growth, yield, and quality of lettuce, escarole, and curly endive grown in a hydroponic floating system was evaluated. Biometric, nutrient, and quality analyses were conducted to assess the response of each species to Mo. The results demonstrated that molybdenum is essential for harvesting marketable plants. Lettuce, escarole, and curly endive plants differed significantly in their response to molybdenum fertilization. The increase of Mo concentration in the nutrient solution was not harmful for plants and had no influence on yield and morphological traits of the leafy vegetables; however, it significantly affected some quality characteristics. Mo fertilization raised the nutritional quality by increasing ascorbic acid content up to 320.2, 139.0, and 102.1 mg kg−1 FW (fresh weight), and reducing nitrate content down to 1039.2, 1047.3, and 1181.2 mg kg−1 FW for lettuce, escarole, and curly endive, respectively. The addition of Mo in the nutrient solution increased the Mo content of plants up to 0.50, 4.02, and 2.68 μg g−1 FW for lettuce, escarole, and curly endive, respectively. Increasing Mo supply to lettuce, escarole, and curly endive up to 3.0 µmol L−1 could lead to a higher nutritional quality with no significant morphological alteration or yield loss.

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