scholarly journals Comparative Efficacy of Plant Extracts with Synthetic against Insect Pests of Okra (Abelmoschus esculentus L. Monech)

2014 ◽  
Vol 19 ◽  
pp. 52-58 ◽  
Author(s):  
Adeola Foluke Odewole ◽  
Fatai Olaitan Alao ◽  
Adedayo Akeem Agboola ◽  
Bolawaye Folakemi Adedapo
Keyword(s):  
Synergistic Effect ◽  
Plant Extract ◽  
Plant Extracts ◽  
Insect Pests ◽  
Block Design ◽  
Comparative Efficacy ◽  
Synthetic Insecticide ◽  
Randomized Complete Block Design ◽  
Cropping Seasons ◽  
Better Than

A field study was carried out during the two cropping seasons of okra to investigate the efficacy of plant extracts and synthetic insecticides applied singly and synergistic effect of botanicals with the synthetic insecticide on some insect pests of okra. Plots were arranged in a Randomized Complete Block Design (RCBD), with three replications. Three insect pests of okra (Podagrica uniformis, Podagrica sjostedti and Zenocerous variegatus) were observed on the field. Cypermethrin applied singly and Cypermethrin combined with plant extracts effectively controlled observed insect pests, followed by lone application of plant extracts (L camara, T. vogelii and Z. officinales plant extracts at 1st and 2nd season. Okra yield revealed that both plant extract and Cypermethrin combined with plant extract were not significantly different from one another at first season and at second season Cypermethrin combined with plant extracts performed better than Cypermethrin applied singly. This study indicates that the studied plant extracts can be good synergist for Cypermethrin in controlling field pest of okra.

scholarly journals An Assessment of Genetic Variability in Contrasting Castor Seedlings

2020 ◽  
Vol 2 (6) ◽  
Author(s):  
G. I. Ilo ◽  
I. A. Nweke ◽  
S. I. Ijearu
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Flowering Plant ◽  
State University ◽  
Randomized Complete Block Design ◽  
Region Length ◽  
Number Of Leaves ◽  
Enugu State ◽  
Cropping Seasons ◽  
Better Than

Nine genotypes of castor oil bean (Ricinus cumunis) were evaluated in 2011 and 2012 cropping seasons to determine their consistency of performance at the Enugu State University of Science and Technology, Enugu State. Eight (8) accessions were selected from various locations in the south east, while a standard check was obtained from Ahmadu Bello University Zaria. The study was carried out using a randomized complete block design with four replications. Data was collected on number of days to germination, days to 50% flowering, plant height at maturity, length of primary raceme, length of pistillate region, length of staminate region and number of leaves. The findings from the study showed that Zaria accession flowers within 80 days and significantly (P < 0.05) different from the other eight (8) accessions studied, except Udi for plant height at maturity the significant and comparable large genotypes for all the characters except number of days to germination; number of nodes and length of staminate region implies that there would be adequate gains in selecting the characters. The phenotypic coefficient of variation was found to be higher than the genotypic coefficient of variance for all the character studied indicating the influence of environment towards the total variance. The short height recorded in Zaria and Udi accessions which are at par is of a desirable trait for shorter plants are easier to manage agronomical and it also withstands lodging better than all plants. These accessions based on the agronomic characters studied were found to perform very well in Enugu south-east, Nigeria and is therefore, recommended to be grown in this region.

scholarly journals Control of field insect pests of mung bean (Vigna radiata L. Wilczek) using some plant extracts in Umudike, Nigeria

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Elechi F. Asawalam ◽  
Ekemezie Constance
Keyword(s):  
Plant Extracts ◽  
Azadirachta Indica ◽  
Vigna Radiata ◽  
Mung Bean ◽  
Insect Pests ◽  
Curcuma Longa ◽  
Block Design ◽  
Field Trials ◽  
Population Densities ◽  
Cropping Seasons

Field trials were conducted at Umudike, Nigeria, during the 2015 and 2016 cropping seasons to determine the efficacy of plant extracts from seven plant species against field insect pests of mung bean, Vigna radiata L. Wilczek. The extracts tested were obtained from scent leaf (Ocimum gratissimum), neem leaf (Azadirachta indica), bitter leaf (Vernonia amygdalina), garlic (Allium sativum), turmeric (Curcuma longa), plantain (Musa paradisiaca) peel and Negro pepper (Xylopia aethiopica). Karate (Lambda-cyhalothrin EC) at 50 mL was introduced as a check in the trials. The experimental design was a randomised complete block design (RCBD) with three replicates. Data were collected weekly on the insect population densities, yield and yield components. The results indicated that all the treatments were effective against mung bean insect pests (Aphis craccivora [aphid], Bemisia tabaci [whitefly], Amrasca biguttula biguttula [jassid] and Zonocerus variegatus[grasshopper]). There was a significant (p ≤ 0.05) reduction in the population of insects on the plots treated with plant extracts and karate in 2015 and 2016 cropping seasons. The population densities of grasshoppers in 2015 and whitefly in 2016 were significantly lower in the treated plots compared with the control plots. Azadirachta indica and C. longa extracts recorded the highest seed yield of 50.00 kg/ha and 42.33 kg/ha in 2015 and 2016, respectively. No significant differences were observed between the plant extracts and karate, which recorded significantly higher yields when compared with the control (23.30 kg/ha). All the plant extracts used exhibited insecticidal activity against the insect pests of mung bean. It is, therefore, recommended that these plant extracts can be used for the control of mung bean insect pests to achieve sustainable production, food security and quality.

scholarly journals Comparative Efficacy of Tephrosia vogelii and Moringa oleifera against Insect Pests of Watermelon (Citrullus lanatus Thumb)

2015 ◽  
Vol 51 ◽  
pp. 5-12 ◽  
Author(s):  
F.O. Alao ◽  
T.A. Adebayo
Keyword(s):  
Plant Extracts ◽  
Moringa Oleifera ◽  
Insect Pests ◽  
Block Design ◽  
Phyllotreta Cruciferae ◽  
Insecticidal Efficacy ◽  
Randomized Complete Block Design ◽  
Tephrosia Vogelii ◽  
Set Up ◽  
Fast Acting

Despite the fact that synthetic insecticides are fast acting, they constitute environmental hazard thereby necessitating the use of ecologically based alternative such as plant based insecticide. This experiment was conducted during the late and early planting seasons of 2011 to determine the insecticidal efficacy of Tephrosia vogelii and Moringa oleifera extracts at three tested concentrations (5, 10 and 20% v/v) against insect pests of watermelon. The experiment was set up in a randomized complete block design with three replicates. The results showed that M. oleifera extracts had 62% reduction of Phyllotreta cruciferae compared with T. vogelii which had 45% control. However, T. vogelii extracts had 64% control of Diabrotica undecimpunctata and Bactrocera curcubitea but M. olefera extracts had 50% control. The plant extracts proved effective against studied insects when compared with untreated plots. However, the effectiveness of the two plants extracts were concentration dependent. Therefore, the two plant extracts can be used in the control of insect pests of the watermelon

scholarly journals On - Farm Evaluation of Natural Toxicants from Tephrosia Vogelii and Petiveria Alliacea on Megalurothrips Sjostedti and Apion Varium of Cowpea (Vigna Unguiculata (L) Walp)

2012 ◽  
Vol 36 (4) ◽  
pp. 575-582 ◽  
Author(s):  
F O Alao ◽  
T A Adebayo ◽  
O A Olaniran
Keyword(s):  
Plant Extracts ◽  
Insect Pests ◽  
Block Design ◽  
Botanical Insecticides ◽  
Megalurothrips Sjostedti ◽  
Petiveria Alliacea ◽  
Randomized Complete Block Design ◽  
Tephrosia Vogelii ◽  
Set Up ◽  
On Farm

The field study was conducted during the planting season of cowpea to evaluate the natural toxicant from Tephrosia vogelii and Petiveria alliacea and their mixture against Megalurothrips sjostedti and Apion varium at three different   concentrations (5, 10, and 20% v/v). The experiment was set up in randomized complete block design. The field observations showed that the two insect pests were effectively controlled by the botanical insecticides compared with untreated plants. Also, the plant extracts at 20% and 10% v/v significantly protected cowpea pods and grains from the damage. However, higher grain yield was obtained from the plant treated with 20% v/v compared to those treated with 10%, 5% v/v and untreated plants. Combination of the two plant extracts at 20%   v/v had the same efficacy with synthetic insecticide (Decis). Thus, these plant   extracts can be used in organic farming.   DOI: http://dx.doi.org/10.3329/bjar.v36i4.11745   Bangladesh J. Agril. Res. 36(4): 575-582, December 2011    

scholarly journals Comparative Efficacy of Tephrosia vogelii and Moringa oleifera against Insect Pests of Watermelon (Citrullus lanatus Thumb)

2015 ◽  
Vol 35 ◽  
pp. 71-78 ◽  
Author(s):  
F.O. Alao ◽  
T.A. Adebayo
Keyword(s):  
Plant Extracts ◽  
Moringa Oleifera ◽  
Insect Pests ◽  
Block Design ◽  
Phyllotreta Cruciferae ◽  
Insecticidal Efficacy ◽  
Randomized Complete Block Design ◽  
Tephrosia Vogelii ◽  
Set Up ◽  
Fast Acting

Despite the fact that synthetic insecticides are fast acting, they constitute environmental hazard thereby necessitating the use of ecologically based alternative such as plant based insecticide. This experiment was conducted during the late and early planting seasons of 2011 to determine the insecticidal efficacy of Tephrosia vogelii and Moringa oleifera extracts at three tested concentrations (5, 10 and 20% v/v) against insect pests of watermelon. The experiment was set up in a randomized complete block design with three replicates. The results showed that M. oleifera extracts had 62% reduction of Phyllotreta cruciferae compared with T. vogelii which had 45% control. However, T. vogelii extracts had 64% control of Diabrotica undecimpunctata and Bactrocera curcubitea but M. olefera extracts had 50% control. The plant extracts proved effective against studied insects when compared with untreated plots. However, the effectiveness of the two plants extracts were concentration dependent. Therefore, the two plant extracts can be used in the control of insect pests of the watermelon

scholarly journals Green entrepreneurship in India

2022 ◽  
Vol 11 (2) ◽  
pp. 72-75
Author(s):  
YD Nayak ◽  
AP Sahoo
Keyword(s):  
Yield Components ◽  
Agricultural Research ◽  
Block Design ◽  
Fruit Yield ◽  
System Software ◽  
Randomized Complete Block Design ◽  
Yield And Yield Components ◽  
Number Of Leaves ◽  
Cropping Seasons ◽  
Better Than

The experiment was conducted to evaluate the adaptability of newly released papaya varieties at Chano Mille research site of Arba Minch Agricultural Research Center during 2019-2020 cropping seasons. The three hermaphrodite papaya varieties namely; Braz-HS1, Koka-HM1 and Meki-HL1 were used for the study and laid-out in a Randomized Complete Block Design in three replications. Data on yield and yield components were collected and analyzed by using analysis of variance (ANOVA) through Statistical Analytics System software. The ANOVA results revealed that there were significant variations among papaya varieties for the studied parameters. Significantly, the highest number of fruits plant-1, number of leaves and fruit yield were obtained from Braz-HS1 papaya variety. The fruit yield of Braz-HS1 variety was 46% higher than that of Koka-HM1. In general, Braz-HS1 papaya variety performed (in terms of number of fruits and fruit yield) better than the rest two varieties. Thus, Braz-HS1 papaya variety could be recommended for the papaya growers in the study area and vicinity with similar agro-ecology. Int. J. Agril. Res. Innov. Tech. 11(2): 72-75, Dec 2021

Evaluation of the Efficacy of Some Pre-Emergence Herbicides in Cotton (Gossypium Spp.) in Northern Ghana

2018 ◽  
Vol 1 (1) ◽  
pp. 82-90
Author(s):  
M. Mawunya ◽  
I. K. Dzomeku ◽  
I. Baba ◽  
M. Abudulai
Keyword(s):  
Agricultural Research ◽  
Block Design ◽  
Dry Weight ◽  
Northern Ghana ◽  
Seed Cotton ◽  
Weed Growth ◽  
Gossypium Spp ◽  
Randomized Complete Block Design ◽  
Cropping Seasons ◽  
Better Than

A field experiment was conducted at the Savanna Agricultural Research Institute to investigate the effects of pre-emergence herbicides for weed control in cotton during the 2014 and 2015 cropping seasons. The study determined the effects of different rates of three novel cotton herbicides with different formulations on weeds, yield components and yield of seed cotton, applied as pre-emergence. The treatments were laid out in randomized complete block design with four replications and consisted of Diflufenican + Flufenicent and Diflufenican + Flufenicent + Flurtamone as 500SC formulations of each and applied at the rate of 0.3, 0.4, 0.6, and 0.8 l/ha, whilst Diflufenican + Flufenicent + Flurtamone as 200SC formulation was applied at 0.4, 0.5, 0.8, and 1.0L/ha. A reference herbicide + product with active ingredients Promotrin + Metolachlor applied at 3.0l /ha and untreated weedy and weed free checks were included.  Results showed that. Diflufenican + Flufenicent + as 200SC applied at 0.8 l/ha gave the lowest weed dry weight (65.0 g/m2) similar to the reference herbicide (189.4 g/m2) and Diflufenican + Flufenicent + Flurtamone as 200SC applied at 0.8 l/ha (144.8 g/m2), whilst weedy check gave highest (548.7 kg/m2). Consequently, Diflufenican+ Flufenicent applied at 0.8 l/ha gave significantly (p<0.05) the highest number of bolls and number of opened bolls than the reference herbicide; but similar to weed free. Diflufenican + Flufenicent +Flurtamone as 500SC, applied at 1.0 l/ha supported tallest plants similar to Diflufenican + Flufenicent + Flurtamone as 200SC at 0.4 and 0.6 l/ha and Diflufenican + Flufenicent as 500SC applied at 0.6 and 0.8 l/ha and better than the reference herbicide. Diflufenican+ Flufenicent as 500SC applied at 0.8L/ha (81.3 %), Diflufenican + Flufenicent + Flurtamone as 500SC   at 0.8 l/ha (78.7 %) and the reference herbicide (76.3 %) did better (90 %) than weed free. Generally, early control of weeds with the tested herbicides using 0.4 to 1.0 l/ha minimized weed growth and supported high seed cotton yields.

scholarly journals Evaluation of improved hermaphrodite papaya (Carica papaya L.) varieties at Arba Minch, Southern Ethiopia

2022 ◽  
Vol 11 (2) ◽  
pp. 69-71
Author(s):  
G Fikre ◽  
A Mensa
Keyword(s):  
Yield Components ◽  
Carica Papaya ◽  
Agricultural Research ◽  
Block Design ◽  
Fruit Yield ◽  
Southern Ethiopia ◽  
Randomized Complete Block Design ◽  
Number Of Leaves ◽  
Cropping Seasons ◽  
Better Than

The experiment was conducted to evaluate the adaptability of newly released papaya varieties at Chano Mille research site of Arba Minch Agricultural Research Center during 2019-2020 cropping seasons. The three hermaphrodite papaya varieties namely; Braz-HS1, Koka-HM1 and Meki-HL1 were used for the study and laid-out in a Randomized Complete Block Design in three replications. Data on yield and yield components were collected and analyzed by using analysis of variance (ANOVA) through Statistical Analytics System software. The ANOVA results revealed that there were significant variations among papaya varieties for the studied parameters. Significantly, the highest number of fruits plant-1, number of leaves and fruit yield were obtained from Braz-HS1 papaya variety. The fruit yield of Braz-HS1 variety was 46% higher than that of Koka-HM1. In general, Braz-HS1 papaya variety performed (in terms of number of fruits and fruit yield) better than the rest two varieties. Thus, Braz-HS1 papaya variety could be recommended for the papaya growers in the study area and vicinity with similar agro-ecology. Int. J. Agril. Res. Innov. Tech. 11(2): 69-71, Dec 2021

scholarly journals Seed Yam Production Using High-Quality Minitubers Derived from Plants Established with Vine Cuttings

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 978
Author(s):  
Beatrice Aighewi ◽  
Norbert Maroya ◽  
Lava Kumar ◽  
Morufat Balogun ◽  
Daniel Aihebhoria ◽  
...  
Keyword(s):  
Block Design ◽  
Research Station ◽  
International Institute ◽  
Tropical Agriculture ◽  
Single Node ◽  
Cropping Season ◽  
Randomized Complete Block Design ◽  
The World ◽  
Cropping Seasons ◽  
Set Up

Yam (Dioscorea spp.) is a valuable food security crop in West Africa, where 92% of the world production occurs. The availability of quality seed tubers for increased productivity is a major challenge. In this study, minitubers weighing 1, 3, and 5 g produced from virus-free single-node vine cuttings of two improved yam varieties (Asiedu and Kpamyo) growing in an aeroponics system were assessed for suitability in seed production at a population of 100,000 plants ha−1. A 3 × 2 factorial experiment with randomized complete block design and three replications was set up during the cropping seasons of 2017 to 2019 at the International Institute of Tropical Agriculture Research Station in Kubwa, Abuja, Nigeria. Results showed field establishments of 87%–97.8%. Yields differed with minituber size, variety, and cropping season; the highest was 31.2 t ha−1 in 2019 and the lowest, 10 t ha−1 in 2018 from 5 and 1 g Kpamyo minitubers, respectively. The estimated number of tubers produced per hectare by 1, 3, and 5 g minitubers was 101,296, 112,592, and 130,555, with mean weights per stand of 159.2, 187.3, and 249.4 g, respectively. We recommend using less than 6 g minitubers for seed yam production due to their high multiplication rates.

scholarly journals Hill drop sowing of soybean with different number of plants per hole

2018 ◽  
Vol 48 (5) ◽  
Author(s):  
Esmael Lopes dos Santos ◽  
Victor José Agassi ◽  
Alessandro Sartor Chicowski ◽  
Julio Cezar Franchini ◽  
Henrique Debiasi ◽  
...  
Keyword(s):  
Plant Density ◽  
Block Design ◽  
Agronomic Performance ◽  
Soybean Cultivars ◽  
Lack Of Information ◽  
Cropping Season ◽  
Randomized Complete Block Design ◽  
Cropping Seasons

ABSTRACT: In the last few cropping seasons, some soybean producers have tested the application of a hill drop sowing method, usually from three to four seeds every 30 to 40cm. However, there is a lack of information in the literature about the effect of this practice on soybean performance. Thus, the objective of this study was to evaluate the effect of a hill drop sowing with different number of plants per hole on soybean performance. The study was conducted in Londrina - PR, Brazil, during the 2013/14, 2014/15 and 2016/17 cropping seasons. The experiment was a randomized complete block design with four replications and a 2x5 factorial scheme. The first factor consisted of two soybean cultivars, BRS 359RR and NK 7059RR analyzed in the first two cropping seasons and BRS 359RR and BRS 1010IPRO in the last cropping season. The second factor was constituted by five in-hill hole-spacing treatments (HS) (8, 16, 24, 32 and 40cm), with rows spaced 50cm apart. To maintain the same plant density in all treatments (270,000 plants ha-1), sowing was performed manually, being then thinned out. After thinning, the distribution was one plant per hole at HS8, 2 plants at HS16, 3 plants at HS24, 4 plants at HS32, and 5 plants at HS40. The agronomic performance of soybean in hill drop sowing with different number of plants per hole is similar to that of an equidistant distribution of plants.

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