scholarly journals Predation of Florida red scale Chrysomphalus aonidum (L.) by the metallic blue ladybeetle Curinus coeruleus (Mulsant)

2021 ◽  
pp. 1-8
Author(s):  
Salman Al-Shami ◽  
Jawwad A. Qureshi
Keyword(s):  
Consumption Rate ◽  
Production Systems ◽  
Petri Dish ◽  
Pest Species ◽  
Valencia Orange ◽  
Citrus Production ◽  
Florida Red Scale ◽  
Chrysomphalus Aonidum ◽  
Curinus Coeruleus ◽  
Efficient Predator

Abstract Florida red scale, Chrysomphalus aonidum (L.) is a species of armored scales, which attacks citrus crops. Biological control, particularly ladybeetles, are critical for its management in citrus production systems. We evaluated predation of C. aonidum by adult and larvae (3rd–4th instar) of the metallic blue ladybeetle, Curinus coeruleus. C. coeruleus were tested against C. aonidum in three separate treatments on Valencia orange leaves in Petri-dish arenas (1) individuals with armor intact, (2) individuals with armor removed, and (3) mix of individuals with armor intact or removed, to determine if armor inflicts distraction to predator consumption of scale and impact. Within 24 h of exposure to C. aonidum, adult beetle consumption rate averaged 64–68% in the two treatments containing all or half of the individuals with armor, compared to 100% in the treatment with armor removed. The consumption rate in the former two treatments increased to 83–89% within 72 h. Larval consumption of C. aonidum with armor intact was 25% at 24 h and 41% at 72 h, compared to 92–100% in the treatment with armor removed. The adults resulting from the larvae developed on C. aonidum with the armor intact or between the diets of armor intact or removed consumed more scales without armor than with armor. Significant consumption of C. aonidum by adults and larvae of C. coeruleus indicates that it is an efficient predator of this pest species. These novel findings suggest that this predator could be useful for suppressing C. aonidum populations in citrus production systems, particularly in habitats where both species are established such as Florida.

2020–2021 Florida Citrus Production Guide: Citrus Under Protective Screen (CUPS) Production Systems

EDIS ◽  
2020 ◽  
Author(s):  
Arnold W. Schumann ◽  
Ariel Singerman ◽  
Alan L. Wright ◽  
Rhuanito S. Ferrarezi
Keyword(s):  
Production Systems ◽  
Citrus Production ◽  
Florida Citrus ◽  
Protective Screen

RARE EARTH ELEMENTS IN CITRUS PRODUCTION SYSTEMS

2013 ◽  
Vol 36 (5) ◽  
pp. 762-771 ◽  
Author(s):  
Christian Turra ◽  
Elisabete A. De Nadai Fernandes ◽  
Márcio Arruda Bacchi ◽  
Gabriel Adrián Sarriés ◽  
Fernando Barbosa Júnior ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Production Systems ◽  
Citrus Production

scholarly journals A Way Forward to Combat Insect Pest in Rice

2021 ◽  
Vol 25 (1) ◽  
pp. 1-22
Author(s):  
MP Ali ◽  
B Nessa ◽  
MT Khatun ◽  
MU Salam ◽  
MS Kabir
Keyword(s):  
Yield Loss ◽  
Production Systems ◽  
Insect Pests ◽  
Insect Pest ◽  
Brown Planthopper ◽  
Mobile App ◽  
Rice Production ◽  
Economic Losses ◽  
Pest Species ◽  
Management Options

The damage caused by insect pest is the continual factor for the reduction of rice production. To date, 232 rice insect pest species are identified in Bangladesh and more than 100 species of insects are considered pests in rice production systems globally, but only about 20 - 33 species can cause significant economic loss. The major goal of this study is to explore all the possible ways of developed and proposed technologies for rice insect pests management and minimize economic losses. Insect pests cause 20% average yield loss in Asia where more than 90% of the world's rice is produced. In Bangladesh, outbreak of several insects such as rice hispa, leafroller, gallmidge, stem borers and brown planthopper (BPH) occurs as severe forms. Based on previous reports, yield loss can reach upto 62% in an outbreak situation due to hispa infestation. However, BPH can cause 44% yield loss in severe infestested field. To overcome the outbreaks in odd years and to keep the loss upto 5%, it is necessary to take some preventive measures such as planting of resistant or tolerant variety, stop insecticide spraying at early establishment of rice, establish early warning and forecasting system, avoid cultivation of susceptible variety and following crop rotation. Subsequent quick management options such as insecticidal treatment for specific insect pest should also be broadcasted through variety of information systems. Advanced genomic tool can be used to develop genetically modified insect and plants for sustainable pest management. In addition, to stipulate farmers not use insecticides at early crop stgae and minimize general annualized loss, some interventions including training rice farmers, regular field monitoring, digitalization in correct insect pests identification and their management (example; BRRI rice doctor mobile app), and demonstration in farmers field. Each technology itself solely or combination of two or more or all the packages can combat the insect pests, save natural enemies, harvest expected yield and contribute to safe food production in Bangladesh. Bangladesh Rice J. 25 (1) : 1-22, 2021

2021–2022 Florida Citrus Production Guide: Citrus Under Protective Screen (CUPS) Production Systems

EDIS ◽  
2021 ◽  
Author(s):  
Tripti Vashisth ◽  
Arnold W. Schumann ◽  
Ariel Singerman ◽  
Alan L. Wright ◽  
Rhuanito S. Ferrarezi ◽  
...  
Keyword(s):  
Production Systems ◽  
Citrus Production ◽  
Florida Citrus ◽  
Protective Screen

scholarly journals Exploiting Olive Mill Byproducts and Other Waste for Organic Weed Management

Horticulturae ◽  
2019 ◽  
Vol 5 (3) ◽  
pp. 59 ◽  
Author(s):  
Tubeileh ◽  
Schnorf ◽  
Mondragon ◽  
Gray
Keyword(s):  
Weed Management ◽  
Crop Production ◽  
Production Systems ◽  
Agricultural Waste ◽  
Petri Dish ◽  
Bell Pepper ◽  
Loam Soil ◽  
Vegetation Water ◽  
Organic Weed Management ◽  
Olive Mill

Weed management represents one of the most serious and costly challenges in organic crop production systems. Agricultural waste/byproducts might present phytotoxicity that can be exploited to control weeds. Two experiments were designed to study the effects of four concentrations of olive vegetation water (OVW) and a control water treatment (with no OVW) on cheeseweed (Malva parviflora L.) seed germination in petri dishes and pots. In a third experiment, two rates of four composts (crop residue mix (CR), olive pomace (OP), dairy/horse manure (DM), and an OP/DM mix) were mixed into a clay‒loam soil at 0.10 or 0.20 L L−1, to assess their effects on weed number and biomass, in addition to bell pepper (Capsicum annuum L.) growth. In the petri dish experiment, the three highest OVW concentrations completely prohibited germination during the five-week duration of the study. For the pot experiment, 25 mL application of OVW significantly delayed and reduced cheeseweed germination, with the reduction being proportional to the concentration of OVW. In the third experiment, composts reduced weed dry matter (composed mostly of purslane (Portulaca oleracea L.)), with the CR compost being the most effective, reducing total weed biomass by 67% compared to the control. CR10 and DM10 tended to increase bell pepper yields, although none of the plant parameters was significantly affected by the compost treatments.

EFFICACY OF FOLIAR UREA AS AN N SOURCE IN SUBSTAINABLE CITRUS PRODUCTION SYSTEMS

2002 ◽  
pp. 611-617 ◽  
Author(s):  
M. El-Otmani ◽  
A. Ait-Oubahou ◽  
F. Zahra ◽  
C.J. Lovatt
Keyword(s):  
Production Systems ◽  
N Source ◽  
Citrus Production ◽  
Foliar Urea

Intraguild predation among ladybeetles and a green lacewing: do the larval spines of Curinus coeruleus(Coleoptera: Coccinellidae) serve a defensive function?

2003 ◽  
Vol 93 (6) ◽  
pp. 499-505 ◽  
Author(s):  
J.P. Michaud ◽  
A.K. Grant
Keyword(s):  
Harmonia Axyridis ◽  
Interspecific Interactions ◽  
Dorsal Surface ◽  
Petri Dish ◽  
Green Lacewing ◽  
Chrysoperla Rufilabris ◽  
Size And Morphology ◽  
Curinus Coeruleus ◽  
Mandible Size

AbstractLaboratory experiments examined interspecific interactions between larvae of three coccinellid species, Curinus coeruleus Mulsant (Chilocorinae), Harmonia axyridis Pallas and Olla v-nigrum (Mulsant) (Coccinellinae), and between these and larvae of the green lacewing, Chrysoperla rufilabris (Burmeister). Larvae of C. coeruleus, although defended on their dorsal surface with long spines, had the smallest mandibles, were the slowest-moving, and the least successful in interspecific larval combat. The long spines of third instar C. coeruleusappeared to reduce their palatability as food to H. axyridis and O. v-nigrum larvae in choice tests with dead larvae, but were not an effective defence against these species in Petri dish arenas. Larvae of O. v-nigrum had a smooth dorsal surface, were intermediate in terms of mandible size, but were the fastest moving, a trait that benefited their survival in intraguild combat. Larvae of H. axyridis were intermediate with respect to dorsal spines and speed of movement, but had the largest mandibles. This species was the most effective intraguild combatant among the coccinellids and the only one to successfully compete against C. rufilabris larvae of similar age. The speed, manoeuverability and long mandibles of C. rufilabris enabled them to impale coccinellid larvae at a relatively safe distance. The spines of C. coeruleus larvae impeded laterally oriented attacks by C. rufilabris, but did not provide sustained protection from repeated attacks. Success in these interactions appeared largely a function of offensive weaponry (mandible size and morphology) and speed of movement, although the role of dorsal spines as defensive structures was not ruled out. Rates of larval cannibalism were highest for C. rufilabris and largely mirrored the level of aggression observed in interspecific combat for each species.

Effect of malathion-bait mixture on two parasitoids of the Florida red scale, Chrysomphalus aonidum (L.)

1988 ◽  
Vol 7 (2) ◽  
pp. 91-95 ◽  
Author(s):  
Ephraim Cohen ◽  
Haggai Podoler ◽  
Muhamad El-Hamlauwi
Keyword(s):  
Florida Red Scale ◽  
Chrysomphalus Aonidum

FERTIGATION FOR CITRUS TREES

EDIS ◽  
2017 ◽  
Vol 2017 (5) ◽  
Author(s):  
Mongi Zekri ◽  
Arnold Schumann ◽  
Tripti Vashisth ◽  
Davie Kadyampakeni ◽  
Kelly T. Morgan ◽  
...  
Keyword(s):  
Water Conservation ◽  
Production Systems ◽  
Sprinkler Irrigation ◽  
Fertilizer Management ◽  
Irrigation Methods ◽  
Management Efficiency ◽  
Citrus Production ◽  
Freeze Protection ◽  
Irrigation Research ◽  
Citrus Trees

Microirrigation is an important component of citrus production systems in Florida. For citrus trees, microirrigation is more desirable than other irrigation methods for several reasons: water conservation, fertilizer management efficiency, and freeze protection. Research has shown that when microirrigation systems are properly managed, water savings can amount to as much as 80% compared with subirrigation and 50% compared with overhead sprinkler irrigation. Research has also shown the important advantage of microsprinklers for freeze protection of citrus. This 4-page fact sheet discusses fertilizer solubility and some common fertigation materials. It also offers a fertigation summary. Written by Mongi Zekri, Arnold Schumann, Tripti Vashisth, Davie Kadyampakeni, Kelly Morgan, Brian Boman, and Tom Obreza, and published by the UF Horticultural Sciences Department, September 2017.

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