scholarly journals Monitoring and Management of Date Palm Borers by Using Light Traps

2020 ◽  
Vol 33 (2) ◽  
pp. 147-157
Author(s):  
Aqeel Alyousuf ◽  
Ali D. Shaaban ◽  
Mohammed M. Alderawii ◽  
Huda M. Alsaadie
Keyword(s):  
Date Palm ◽  
Control Method ◽  
Phoenix Dactylifera ◽  
Management Program ◽  
Management Tool ◽  
Effective Control ◽  
Light Traps ◽  
Severe Damage ◽  
Monitoring Tool ◽  
Stem Borers

Date palm borers become a serious threat to date palm plantations in Iraq, which required management program to suppress their population by using different methods; one of them is the light traps which disseminated in Basrah province. The objective of this trial is to evaluate the effectiveness of light traps as a part of pest management tool. In three years monitoring of coleopteran adults, rhinoceros beetles Oryctes spp. and longhorn date palm borer Jebusaea hammerschmidtii infesting the date palm Phoenix dactylifera were reported by using light traps in different regions of Basrah, Iraq. Due to the result of the abundance of the borers, Oryctes spp. were the most dominant and most important causing severe damage for the date palm. Four species of Oryctes (O. agamemnon, O. elegans, O. sahariensis and O. sinaicus) were recorded in Basrah date palm orchards; the seasonal activity of the species was between April and May, reaching the peaks during summer, and the populations decreased gradually till December. The overall sex ratios of all species of Oryctes spp. were male-biased except O. elegans, which had the sex ratio of 1.13 female: 1 male. Results revealed that the light traps exhibit an effective control method to suppress the adult borer’s population and as a physical control and monitoring tool of date palm stem borers.

scholarly journals Introduction Pages

2019 ◽  
Vol 11 (1) ◽  
pp. I-VI
Author(s):  
Radu E. SESTRAS
Keyword(s):  
Date Palm ◽  
Disease Status ◽  
Shoot Elongation ◽  
Phoenix Dactylifera ◽  
Effective Control ◽  
Albino Rats ◽  
Normal Male ◽  
Shoot Cultures ◽  
African Mahogany

Notulae Scientia Biologicae (http://www.notulaebiologicae.ro), Issue 1, Volume 11, 2019: The papers published in this issue (http://www.notulaebiologicae.ro/index.php/nsb/issue/current) represent interesting novelties in different topics of life science. Among the exciting researches, we invite readers to find news about: The role of DNA Methylation in perennial plants; Peste des petits ruminants: Aetiology, pathology, immunology, disease status in Africa, diagnosis, control, prevention and treatment; Phytotherapy and polycyclic logging: implication on genetic multiplicity and diversity of African mahogany in tropical rainforest; Insight into re-emergence of cassava brown streak disease: the need to explore diverse approaches for effective control; Microbiological characterization of grilled meat “Tchatchanga” in Cotonou (Southern Benin): Enumeration, isolation and resistance profile of Staphylococcus aureus and Escherichia coli; Development of shoot cultures from leaf explant of Portulaca quadrifida L.; Evaluation of in vitro shoot elongation and rooting of date palm, and determination of physiological characteristics of regenerated plantlets; Maturation and germination of date palm (Phoenix dactylifera L.) somatic embryos; Hypoglycaemic and hypolipidemic effects of black brand of lipton tea (Camellia sinensis) on normal male albino rats.

scholarly journals Reevaluation of Factors Affecting Bunch Drop in Date Palm

HortScience ◽  
2010 ◽  
Vol 45 (6) ◽  
pp. 887-893 ◽  
Author(s):  
Yuval Cohen ◽  
Stanley Freeman ◽  
Aida Zveibil ◽  
Rachel Ben Zvi ◽  
Yaakov Nakache ◽  
...  
Keyword(s):  
Date Palm ◽  
Pathogenic Fungus ◽  
Phoenix Dactylifera ◽  
Fusarium Proliferatum ◽  
Severe Damage ◽  
Factors Affecting ◽  
Proximal Points ◽  
Fallen Fruit ◽  
Irrigation Levels

Severe damage has been observed in Israeli date palm (Phoenix dactylifera L.) plantations of the Medjool cultivar as a result of drying and dropping of fruit bunches. Both fractures and rot occurred during peduncle (fruit stalk) development at proximal points located deep within the crown. The phenomenon has been previously described as “cross–cut” or “V-cut.” The present study aimed to characterize the phenomenon and identify the main causal factors. Annual surveys have revealed high levels of fruit bunch drop in all ‘Medjool’ cultivation areas in Israel. Arenipses sabella and other insects were only occasionally detected in the damaged fruit stalks. Similar damage levels observed in insecticide-treated and untreated plots suggested that insects were not directly responsible for this phenomenon. Tissue decay was detected in many of the freshly fallen fruit stalks. The pathogenic fungus, Fusarium proliferatum, was detected in most of the necrotic fruit stalks. Fusarium proliferatum isolates from infected fruit stalks generated necrotic lesions in fruit stalk tissue in vitro. However, fungicide treatments on trees in the orchards were ineffective in reducing bunch drop. On the other hand, restraining the growth rate of the fruit stalk, by reducing irrigation levels (to 20%) during the period of fruit stalk development and growth, significantly reduced bunch drop levels in most of the examined plots. These data suggest that bunch drop in ‘Medjool’ date palm is caused mainly by physiological disorders related to fruit stalk development and growth.

scholarly journals Antifungal activity of Acacia tortilis subsp. raddiana tar on Fusarium oxysporum f.sp. albedinis, the cause of Bayoud disease of the date palm in Southwest Algeria

2019 ◽  
Author(s):  
A. Mezouari ◽  
A. Makhloufi ◽  
K. Bendjima ◽  
L. Benlarbi ◽  
A. Boulanouar ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Fusarium Oxysporum ◽  
Date Palm ◽  
Refraction Index ◽  
Phoenix Dactylifera ◽  
Effective Control ◽  
Pcr Analysis ◽  
Acacia Tortilis ◽  
Species Specific

Bayoud caused by Fusarium oxysporum f.sp. albedinis (Foa), is the most destructive disease of the date palm (Phoenix dactylifera L.) in Morocco and Algeria and there is no effective control strategy. We found that although Foa isolates vary morphologically, Foa strains can be identified by species-specific primers. PCR analysis revealed that the strains that we isolated from infected date palm rachis were the Bayoud pathogen Foa. We used these strains to evaluate the antifungal activity of tar extracted from Acacia tortilis subsp. raddiana. The A. raddiana tar had a density of 1.15, a refraction index of 1.3850, a pH of 5.2 and a dried matter ratio of 48.75%. The A. raddiana tar effectively inhibited the growth of Foa in vitro with a minimum inhibitory concentration of 3 µg/ml.

On the use of pharmacological sterilisation to control feral pigeon populations

2007 ◽  
Vol 34 (4) ◽  
pp. 306 ◽  
Author(s):  
D. Giunchi ◽  
N. E. Baldaccini ◽  
G. Sbragia ◽  
C. Soldatini
Keyword(s):  
Pest Management ◽  
Carrying Capacity ◽  
Field Data ◽  
Control Method ◽  
Reproductive Activity ◽  
Management Program ◽  
Effective Control ◽  
Feral Pigeon ◽  
Feral Pigeons ◽  
Study Sites

The use of chemosterilisation for controlling feral pigeon populations was investigated by: (1) quantifying the reproductive activity of pigeons in two Italian cities; (2) testing the efficacy of nicarbazin, an anticoccidial drug with rapid and reversible effects on the reproduction of laying hens, on groups of paired pigeons maintained in open aviaries; and (3) simulating the effects of the use of nicarbazin on a hypothetical population, allowing for the reproductive productivity recorded in (1) and the efficacy of this drug as obtained in (2). Breeding attempts were recorded all year round in both study sites with a minimum peak in September–October, a maximum in March–July, but with active nests in winter too. In terms of the sterility activity of the drug, the results showed only a partial inhibition of reproduction of pigeons fed ~38–82 mg nicarbazin day–1 (kg bodyweight)–1 (500 and 800 ppm in feed), which, according to the simulations, would produce only a fleeting reduction of their abundance in the field. Data do not seem to support the use of this drug as an effective control method for feral pigeons, and they cast doubts on the opportunity to make use of chemosterilants, which produce only partial and reversible effects. The use of this drug could perhaps be considered only as part of an integrated pest-management program, which necessarily has to include the reduction of carrying capacity of the urban environment.

Effect of date palm (Phoenix dactylifera L.) spikelets extract on the physicochemical and microbial properties of set-type yogurt during cold storage

LWT ◽  
2021 ◽  
pp. 111762
Author(s):  
Ibrahim A. Almusallam ◽  
Isam A. Mohamed Ahmed ◽  
Elfadil E. Babiker ◽  
Fahad Y. Al-Juhaimi ◽  
Ali Saleh ◽  
...  
Keyword(s):  
Cold Storage ◽  
Date Palm ◽  
Phoenix Dactylifera ◽  
Microbial Properties ◽  
Phoenix Dactylifera L

scholarly journals A New Model Predictive Control Method for Eliminating Hydraulic Oscillation and Dynamic Hydraulic Imbalance in a Complex Chilled Water System

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3608
Author(s):  
Yang Yuan ◽  
Neng Zhu ◽  
Haizhu Zhou ◽  
Hai Wang
Keyword(s):  
Model Predictive Control ◽  
Predictive Control ◽  
Control Method ◽  
Water System ◽  
Energy Performance ◽  
Effective Control ◽  
New Model ◽  
Chilled Water ◽  
Chilled Water System ◽  
Hydraulic Oscillation

To enhance the energy performance of a central air-conditioning system, an effective control method for the chilled water system is always essential. However, it is a real challenge to distribute exact cooling energy to multiple terminal units in different floors via a complex chilled water network. To mitigate hydraulic imbalance in a complex chilled water system, many throttle valves and variable-speed pumps are installed, which are usually regulated by PID-based controllers. Due to the severe hydraulic coupling among the valves and pumps, the hydraulic oscillation phenomena often occur while using those feedback-based controllers. Based on a data-calibrated water distribution model which can accurately predict the hydraulic behaviors of a chilled water system, a new Model Predictive Control (MPC) method is proposed in this study. The proposed method is validated by a real-life chilled water system in a 22-floor hotel. By the proposed method, the valves and pumps can be regulated safely without any hydraulic oscillations. Simultaneously, the hydraulic imbalance among different floors is also eliminated, which can save 23.3% electricity consumption of the pumps.

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