Comparison of Insecticide Effect of Plant Extracts on Aphids of Watermelon and Green Alfalfa

Kassimi, Abderrahmane; Lahcen, El watik

doi:10.5539/sar.v1n2p301

Cited by 4 publications

(2 citation statements)

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“…Many studies have investigated products of natural origin for pest control in organic farming (Kassimi and El watik 2012;Benelli et al 2017). Considerable progress has been made in recent years in the development of environmentally benign fungal biological control agents for pest control.…”

Section: Introductionmentioning

confidence: 99%

Journal of Plant Protection Research

Nikolova

2022

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The perspective direction in the biological regulation of insect pest populations is the combined use of different products of organic origin including fungal biological control agents. Therefore, the present study was aimed to evaluate the efficacy of products of natural origin (Aminogreen 24, Nitrogreen, Foliamin and Naturalis − strain ATCC 74040 of entomopathogenic fungus Beauveria bassiana) and one synthetic insecticide − standard (deltamethrin + thiacloprid), applied alone and in a mixture in the control of Acyrthosiphon pisum in forage pea. The study was conducted in a field experiment during the period 2017 − 2020. Infestation by leaf aphids was estimated by calculating the cumulative insect--days (CID). It was found that the combination of Aminogreen 24 + Naturalis had the most pronounced decrease in CID among products over the years from 2017 to 2020 and the average for the period. The greatest, significant reduction in the number of aphids occurred on day 5 (F 8.5 = 15.244; p < 0.033) and day 7 (F 8.5 = 33.087; p < 0.037) after treatment. On the 14th day, the decrease in CID (57.4% decrease) statistically exceeded the Proteus 110 OD standard (55.3% decrease) (F 8.5 = 49.841; p < 0.049). Good protection against A. pisum was also found with Naturalis and Nitrogreen + Naturalis. There was an additive effect between Naturalis and Aminogreen 24 throughout the entire study period. The ratio of chlorophyll a (Chl a) to chlorophyll b (Chl b) and the ratio of green pigments (Chl a + + Chl b) to carotenoids determined that plants treated with Aminogreen 24 + Naturalis and Naturalis had the best physiological state. The combination of Aminogreen 24 and Naturalis gave the largest, significant, increase in stem height, followed by Nitrogreen + Naturalis. The use of Naturalis, alone and in a combination with Aminogreen 24 and Nitrogreen can be a successful alternative to conventional chemical control.

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Section: Introductionmentioning

confidence: 99%

Journal of Plant Protection Research

Nikolova

2022

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“…They are used in traditional medicine as a remedy for cold, flu and cough and also as a food and flavor (spice). Extracts from O. syriacum show an antifungal activity [4] and they are used as an insecticidal agent against agricultural pests and diseases [8,9,10,11]. The production of O. syriacum from the wild habitat in Lebanon varies annually from 700 to 800 t (dry weight) [12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Pine Needle Mulch and Irrigation Frequency on the Yield of Origanum syriacum under Open Field Condition

Hajj

Nakhle

Talj

et al. 2019

EJMP

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Due to the intensive harvest from natural habitat and increasing competition as a source of food, O. syriacum was introduced into cultivation and soon became one of the promising crops for many farmers in rural areas. The aim of the study is to investigate the effect of pine needle mulch(PN) and irrigation frequency(IF) at 5, 10 and 15 days on the yield under open field conditions. The study was conducted at the Lebanese agricultural research institute (LARI) in Lebaa station (33°32.681′ North, 35°27.088′ East, 354 m a.s.l.), south Lebanon, province of Jizzin, under open field condition for two seasons during 2016. Treatments were organized in randomized complete block design (RCBD) with three replicates. The results indicated a significant effect of mulch in both spring and fall seasons F (1, 172) = 59.34, p < .0001, η²=.24, F (1, 172) = 77.71, p < .0001, η²=.30 respectively. The two-way anova showed no significant effect of irrigation frequency on the average and total plant fresh weight (PFW) across two seasons F (2, 349) = .80, p= .4522, η²=.0038, F (2, 159) = 1.07, p= .3460, η²=.007 respectively. Very little variance of the plant fresh weight ,(0.2% – spring and 3.1 %- fall) was attributed to the interaction of mulch and irrigation frequency .In a comparison between percent weight contribution(PWC) of a different plant part, leaves formed the highest proportion (48.6%) compared to the inflorescence and stem. The fresh weight of weeds(g/ m2 ) was significantly less in plots mulched with pine needles compared to the control (F(1,66)=24.43, p<.0001, η²=.75). Applying pine needle mulch enhanced most of the yield parameters. Under calcareous clayey soil O. syriacum could be irrigated at10 or 15 days frequencies without remarkable decrease in the yield.

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