Effect of Planting Pattern on Physico-chemical Properties of Two Garlic Cultivar

Background: Garlic (Allium sativum L.) member of the family Alliaceae, quality planting material is one of the major inputs to successful crop production. Planting spacing is the systematic evaluation of the farm area or any growing surface for crop production. Methods: In order to investigate the effect of planting pattern on morphology and physiology variables of two garlic cultivars an experiments was conducted as a factorial based randomized block design with three replications in research field of Gonbad-e-Kavous University during 2016-2017. The factors were included seven planting patterns (12.5×12.5, 15×15, 17.5×17.5, 20×20, 22.5×22.5, 25×25 and 27.5×27.5 cm) and two garlic cultivars (Tarom and Hamedan) and the measurements were phenology bulb yield, harvest index, biological yield and quality parameters (total phenol, antioxidant activity, total flavonoid and allicin). Result: The highest bulb yield (19014.4 kg ha-1) was recorded in planting pattern 12.5×12.5 cm that obtained from the Hamedan cultivar. The highest and lowest of total phenol content ranged from 10.43 mg/100 g (27.5 × 27.5 cm) to 8.50 mg/100gr (12.5 × 12.5 cm). The antioxidant activity varied from 85.20% (27.5 × 27.5 cm) to 77.59% (12.5 × 12.5 cm). The results also showed that Hamedan cultivar had a higher bulb yield, total phenol, Flavonoid and antioxidant activity than Tarom cultivar. The minimum days to 50% leafing (24.16 days), days to 50% bulb initiation (74.50 days) and days to 50% maturation (152.83 days) observed in planting pattern 12.5×12.5 cm treatment.

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Effects of cultivar and planting spacing on yield and yield components of garlic (Allium sativum L.)

Italian Journal of Agronomy ◽

10.4081/ija.2019.1303 ◽

2019 ◽

Vol 14 (2) ◽

pp. 108-113

Author(s):

Fahimeh Fakhar ◽

Abbas Biabani ◽

Mehdi Zarei ◽

Ali Nakhzari Moghadam

Keyword(s):

Correlation Analysis ◽

Yield Components ◽

Crop Production ◽

Allium Sativum ◽

Block Design ◽

The Other ◽

Stem Length ◽

Systematic Evaluation ◽

Yield And Yield Components ◽

Bulb Yield

Planting spacing is the systematic evaluation of the farm area or any growing surface for crop production. In order to study the effect of varying planting patterns in two garlic (Allium sativum L.) cultivars, an experiment was carried out as a factorial design based on randomised complete block design with three replications in the farm of Gonbad-e-Kavous University during 2016- 2017. The factors consisted of seven planting spacing (12.5×12.5, 15×15, 17.5×17.5, 20×20, 22.5×22.5, 25×25 and 27.5×27.5 cm) and two cultivars (Tarom and Hamedan). The fresh bulb yield, bulb weight, clove weight, clove number of bulb, plant height, bulb diameter, bulb length, clove diameter, skin number and stem length were recorded. Results showed that there were significant differences between both planting spaces and cultivars in all variables assessed. The highest bulb yield (19,014 kg ha–1) was recorded in Hamedan with the spacing 12.5×12.5 cm, while the lowest bulb yield (7572 kg ha–1) was detected in Tarom with the spacing 27.5×27.5 cm. The highest number of cloves was produced by Hamedan under the 27.5×27.5 cm arrangement. In addition, upon the correlation analysis between variables, the bulb weight showed the highest effect on garlic yield that bulb weight was negatively correlated with bulb yield (r= –0.60**). Generally, Cultivar Hamedan had a higher yield and yield components than Tarom and the spacing 12.5×12.5 cm had a higher yield than the other spacing.

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Diversity of Functional Soil Microbes in Manures and Its Effect on Organic Mustard Green (Brassica juncea) Production

Journal of Tropical Crop Science ◽

10.29244/jtcs.6.01.60-66 ◽

2019 ◽

Vol 6 (01) ◽

pp. 60-66

Author(s):

Ari Kurniawati ◽

Maya Melati ◽

Sandra Arifin Aziz ◽

Purwono Purwono

Keyword(s):

Crop Production ◽

Soil Microbes ◽

Block Design ◽

Organic Fertilizer ◽

Research Field ◽

Chicken Manure ◽

Long Term Effects ◽

Soil P ◽

Goat Manure ◽

Mustard Green

The application of organic fertilizer, especially manures, for crop production has long-term effects for soil nutrients availability and improvement of soil structure. The improvement of soil properties involves interactions of various types of microorganism in the soil. The research aimed to study the effects of different types of manures on the diversity of functional soil microbes and its effects on organic green mustard production. The experiment was conducted at IPB organic research field, Cikarawang, Darmaga, Bogor, from April to June 2015. The experiment used a randomized complete block design with two factors; the first factor was types of manure, i.e. chicken, cow, and goat manures; the second factor was manure rates, i.e. 0 and 10 ton.ha-1, so there were six treatments in total, replicated three times. The results showed that chicken manure application resulted in a higher mustard green yield and soil-P content than application of goat manure. The addition 10 ton.ha-1 of manures increased C-organic, N, K, and C/N ratio in soil significantly, but mustard green production was not affected. The diversity of microbe population of the soil treated with all types of manures was high. The addition 10 ton.ha-1 of manures decreased the total number of microbes, but increased the number of cellulose-degrading microbes. The population of cellulose-degrading and phosphate-solubilizing microbes in the soil applied with cow manure was higher than those applied with the other manures.

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UJI AKTIVITAS ANTIOKSIDAN DAN PENENTUAN TOTAL KANDUNGAN FENOLIK EKSTRAK ETANOL DAUN NANAMUHA (Bridelia monoica Merr)

PHARMACON ◽

10.35799/pha.9.2020.29268 ◽

2020 ◽

Vol 9 (2) ◽

pp. 178

Author(s):

Julia Elsa Lakoro ◽

Max R. J. Runtuwene ◽

Paulina V. Y. Yamlean

Keyword(s):

Antioxidant Activity ◽

Extraction Method ◽

Total Phenol ◽

Total Phenolic ◽

Total Phenol Content ◽

Phenol Compounds ◽

Activity Test ◽

Ic50 Value ◽

Dpph Method ◽

Ethanol Extracts

ABSTRACTNanamuha (Bridelia monoica Merr.) is a plant that was used as a cancer and tumor drug by the Sangihe Islands community. This plant contains phenol compounds, flavonoids, alkaloids and tannins. The purpose of this study was to determine the potential of nanamuha leaves that grow in the Sangihe Island to have antioxidant activity and determine the total phenolic ethanol extracts of nanamuha leaf. The extraction method used is maceration with ethanol solvent p.a. The extracts obtained was determined total phenolic and antioxidant activity test using DPPH method. Based on the results obtained, the ethanol extracts of nanamuha leaves has antioxidant activity with an IC50 value of 75,03 µg / mL and the result showed that the total phenol content the ethanol extracts of nanamuha leaves of 53,34 mg / L. Keywords : Nanamuha leaf, total phenol, antioxidant activity, DPPH ABSTRAKNanamuha (Bridelia monoica Merr.) merupakan tanaman yang dimanfaatkan sebagai obat kanker dan tumor oleh masyarakat Kepulauan Sangihe. Tanaman ini memiliki kandungan senyawa fenol, flavonoid, alkaloid dan tanin. Tujuan dari penelitian ini adalah unutuk mengetahui potensi dari daun nanamuha yang tumbuh di Kepulaun Sangihe ini memiliki aktivitas antioksidan dan menentukan total fenolik dari ekstrak etanol daun nanamuha. Metode ekstraksi yang digunakan adalah maserasi dengan pelarut etanol p.a. Ekstrak yang diperoleh ditentukan total fenolik dan uji aktivitas antioksidan dengan metode DPPH. Berdasarkan hasil yang didapatkan ekstrak etanol daun nanamuha memiliki aktivitas antioksidan dengan nilai IC50 75,03 µg/mL dan hasil penelitian menunjukan total kandungan fenolik ekstrak etanol daun nanamuha sebesar 53,34 mg/L. Kata kunci : Daun Nanamuha, Total fenol, Aktivitas antioksidan, DPPH

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Antioxidant activity and total phenolic content in Caulerpa filiformis (Chlorophyta) from Sechura Bay and Paracas Bay, Peru

Revista Peruana de Biología ◽

10.15381/rpb.v27i1.17596 ◽

2020 ◽

Vol 27 (1) ◽

pp. 061-066 ◽

Cited By ~ 1

Author(s):

Joyce Mamani ◽

Jorge Chávez ◽

Eder Apumayta ◽

Patricia Gil-Kodaka

Keyword(s):

Antioxidant Activity ◽

Secondary Metabolites ◽

Methanolic Extract ◽

Total Phenol ◽

North Coast ◽

Total Phenolic ◽

Total Phenol Content ◽

Phytochemical Screening ◽

Phenol Content ◽

The North

In Peru, Caulerpa filiformis is a marine algae listed as an invasive species. For years, its distribution has been considered to be in the north coast (Isla Lobos de Afuera and Piura) until a recent report of its distribution in the central coast (Ancash, Lima, and Ica). The present investigation aims to determine the main groups of secondary metabolites, total phenol content, and antioxidant activity of the methanolic extract of C. filiformis from Sechura Bay (Piura) and Paracas Bay (Ica). The main chemical groups were determined through phytochemical screening, the content of phenols by the Folin–Ciocalteu method, and antioxidant activity by the ABTS method (2,2-azinobis-[3-ethylbenzothiazoline-6-sulfonic acid]) and 2,2′-diphenyl-1-picrylhydrazyl (DPPH). The phytochemical screening of the methanolic extract of C. filiformis from Sechura Bay and Paracas Bay revealed the presence of carbohydrates, polyphenols, tannins, flavonoids, lipids, alkaloids, steroids, and triterpenes for both extracts. The total phenol content of the extract of C. filiformis from Sechura Bay (39.31 ± 0.39 mg of AGE/g extract) was significantly higher (p < 0.05) than that from Paracas Bay (18.78 ± 0.31 mg of AGE/g extract). In the ABTS and DPPH assays, the antioxidant capacity of the Sechura C. filiformis extract (IC50 = 3.49 ± 0.01 and 2.18 ± 0.02 mg/mL) was significantly higher (p < 0.05) than that of the Paracas C. filiformis extract (IC50 = 6.41 ± 0.02 and 2.42 ± 0.04 mg /mL). These findings suggest that the methanolic extract of C. filiformis is a source of secondary metabolites with an antioxidant potential.

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PENGARUH JENIS PELARUT TERHADAP AKTIVITAS ANTIOKSIDAN EKSTRAK MENIRAN (Phyllanthus niruri L.)

Jurnal Ilmu dan Teknologi Pangan (ITEPA) ◽

10.24843/itepa.2020.v09.i04.p10 ◽

2020 ◽

Vol 9 (4) ◽

pp. 458

Author(s):

Rizky Amalia Rachmawati ◽

Ni Wayan Wisaniyasa ◽

I Ketut Suter

Keyword(s):

Antioxidant Activity ◽

Total Phenol ◽

Total Phenol Content ◽

Flavonoid Content ◽

Phyllanthus Niruri ◽

Randomized Design ◽

Completely Randomized Design ◽

Four Levels ◽

Effect On Yield ◽

The Right

This study was conducted to determine the effect of different solvents on the antioxidant activity of gale of the wind extract and to find out the right type of solvent used to extract gale of the wind with the highest antioxidant activity using maceration method. The experimental design used in this study was a completely randomized design (CRD) with a type of solvent as a treatment. The treatment consisting of four levels, namely methanol, ethanol, acetone, isopropanol. All treatments were repeated four times so that they were obtained 16 experimental units. The data obtained were analyzed by variance and if the treatment had significant effect followed by Duncan test. The results showed that the type of solvent treatment had a very significant effect on yield, total phenol, total flavonoids, total tannin, and antioxidant activity (IC50). The results showed that acetone solvent had the best treatment which produced a yield of 22.58%, total phenol content of 188.77 mg GAE/g, total flavonoid content of 247.60 mg QE/g, total tannin content of 297.51mg TAE/g, and antioxidant activity (IC50) of 15.19 ppm.

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Effects of Liming on Dithionate and Oxalate Extractable Aluminium in Acid Soils

Asian Journal of Soil Science and Plant Nutrition ◽

10.9734/ajsspn/2019/v5i330069 ◽

2020 ◽

pp. 1-9

Author(s):

Esther Mwende Muindi

Keyword(s):

Crop Production ◽

Block Design ◽

Chemical Properties ◽

Acid Soils ◽

P Availability ◽

Acidic Soils ◽

Training Centre ◽

Wide Range ◽

World Information ◽

Considerable Work

Liming and phosphorus (P) applications are recommended practices for improving crop production in acid soils of the tropics. Although considerable work has been done to establish liming rates for acid soils in many parts of the world, information on the effects of lime on the forms of aluminium which actively sorb P in such soils is minimal. A greenhouse pot experiment was conducted at Waruhiu Farmers Training Centre, Githunguri to evaluate the effect of liming on oxalate and dithionate extractable aluminium in acid soils. Extremely (pH 4.48) and strongly (pH 4.59) acidic soils were evaluated. Four liming (CaO) rates namely 0, 2.2, 5.2 and 7.4 tonnes ha-1 for extremely acidic and 0, 1.4, 3.2, and 4.5 tonnes ha-1 for strongly acidic soils were evaluated. The experiment was laid out in a Randomized Complete Block Design (RCBD) and replicated three times. Data collected included: initial soil chemical properties, oxalate (Alo) and dithionate (Ald) aluminium levels. The tested soils had high exchangeable Al (> 2 cmol Al kg-1), Al saturation of (> 20% Al) and low extractable P values (< 15 mg P kg-1 soil). Liming significantly (p=.05) reduced Alo by 70% and 68% in extremely and strongly acidic soils respectively and Ald by 78% in both extremely and strongly acidic soils compared to control. Use of 7.4 tonnes ha-1 of lime in extremely acidic soils and 4.5 tonnes ha-1 of lime in strongly acidic soils significantly (p=.05) reduced both Alo and Ald by > 68% compared to no lime. It was, therefore, concluded that liming contributes to the reduction of soluble Alo and Ald in acid soils of the Kenya highlands leading to increased soluble P availability. Studies are required to provide short and long term optimal liming rates that reduce Alo and Ald without distabilizing availability of other nutrients in field conditions under wide range of acid soils.

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Chestnut Drying Is Critical in Determining Aspergillus flavus Growth and Aflatoxin Contamination

Toxins ◽

10.3390/toxins10120530 ◽

2018 ◽

Vol 10 (12) ◽

pp. 530 ◽

Cited By ~ 6

Author(s):

Simona Prencipe ◽

Ilenia Siciliano ◽

Carlotta Gatti ◽

Maria Gullino ◽

Angelo Garibaldi ◽

...

Keyword(s):

Antioxidant Activity ◽

Fungal Growth ◽

Aflatoxin Production ◽

Aflatoxin Contamination ◽

Total Phenol ◽

Fungal Colonization ◽

Total Phenol Content ◽

Phenol Content ◽

Drying Treatment ◽

Drying Conditions

Chestnut drying is used to prevent postharvest losses and microorganism contamination during storage. Several studies reported the contamination by aflatoxins (AFs) produced by Aspergillus spp. in chestnuts. The effect of drying temperatures (from 30 to 50 °C) was evaluated on the growth of A. flavus and the production of aflatoxins in chestnuts. The influence of the treatment on the proximate composition, the total phenol content and antioxidant activity of chestnuts was considered. Fungal colonization was observed on the nuts dried at 30, 35, and 40 °C; the incidence was lower at 40 °C. The highest concentrations of AFB1 and AFB2 were produced at 40 °C. No aflatoxins were detected at 45 or 50 °C. At 40 °C A. flavus was under suboptimal conditions for growth (aw 0.78), but the fungus was able to synthesize aflatoxins. As the temperatures applied increased, the total phenol content increased, while the antioxidant activity decreased. A drying treatment at 45 °C for seven days (aw 0.64) could be a promising method to effectively control both the growth of aflatoxigenic fungi and the production of aflatoxins. This study provides preliminary data useful to improve the current drying conditions used in chestnut mills, to reduce both fungal growth and aflatoxin production.

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Antioxidant activity and total phenol content of blackberries cultivated in a highland tropical climate

Acta Scientiarum Agronomy ◽

10.4025/actasciagron.v39i1.28413 ◽

2017 ◽

Vol 39 (1) ◽

pp. 43 ◽

Cited By ~ 7

Author(s):

Mayara Neves Santos Guedes ◽

Rafael Pio ◽

Luana Aparecida Castilho Maro ◽

Fabíola Fonseca Lage ◽

Celeste Maria Patto de Abreu ◽

...

Keyword(s):

Antioxidant Activity ◽

Free Radical ◽

Phenolic Compounds ◽

High Performance ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Total Phenol ◽

Total Phenol Content ◽

Phenol Content ◽

Phenolic Contents

Blackberries are an important option for the diversification of fruit crops. However, there is currently no literature regarding plant cultivation in high-altitude tropical climates. Knowledge of the phenolic composition of blackberries is essential because variations in the levels of these components may exist between cultivars and may depend on environmental conditions. High performance liquid chromatography (HPLC) was used to evaluate the total phenol content of different blackberry cultivars (Arapaho, Brazos, Cainguangue, Cherokee, Choctaw, Comanche, Ébano, Guarani, Tupy and Xavante). Free radical scavenging activity in these cultivars was assayed using a DPPH test. The HPLC-UV chromatogram of blackberry fruit extracts at 280 nm revealed the presence of phenolic compounds. The results showed significant differences in the levels of phenolic compounds in the blackberry cultivars tested. Antioxidant activity was evaluated using the ABTS free radical and ranged from 2.7 ± 0.1 to 19 ± 2 μmole of Trolox equivalents per gram of sample (b.u.). These results are in good correlation with the phenolic contents of the blackberries tested. The Xavante blackberry cultivar had the highest levels of polyphenols that could be individually identified. Catechin polyphenols were found to be the main component in the blackberry varieties tested.

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