Phytoseius plumifer could develop and reproduce when fed on the different stages of the red spider mite T. cinnabarinus. The female immature stages lasted for an average of 4.8, 3.8 and 4.5 days respectively when fed on eggs, immatures and adults of the prey at an average temperature of 29.5 ± l°C. The average number of deposited eggs per female was significantly greater when it fed on immatures and adults (about 45 eggs) than when it fed on prey eggs (about 29 eggs). During the whole life‐span the predator female fed on an average of 969 eggs or 438 immatures or 346 adults, of these more than 93% were consumed during the adult stage. Males lived for shorter time and consumed fewer prey than females. The predator could develop and reproduce successfully on date‐palm pollen but at a slower rate. On this diet the immature stages lasted 10.5 days and female laid an average of 16.6 eggs. On hollyhock and cotton pollen, or sweet potato leaves, larvae failed to develop to adults. ZUSAMMENFASSUNG DIE LEBENSWEISE DER RAUBMILBE PHYTOSEIUS PLUMIFER UND DIE WIRKUNG DER ERNÄHRUNG AUF IHRE BIOLOGIE (ACARINA: PHYTOSEIIDAE) Phytoseius plumifer konnte sich entwickeln und fortpflanzen, wenn er mit verschiedenen Stadien der Roten Spinnmilbe, Tetranychus cinnabarinus, gefüttert wurde. Die Entwicklungs‐Stadien des Weibchens dauerten bei einer Mitteltemperatur von 29,5 ± 1° je nach Fütterung mit Eiern, Jungtieren oder Adulten der Beute durchschnittlich 4,8, 3,8 oder 4,5 Tage. Die durchschnittliche Anzahl von einem Weibchen abgelegter Eier war signifikant größer, wenn sie mit Larven und Erwachsenen gefüttert wurden, (etwa 45 Eier), als wenn sie mit Eiern der Beutetiere ernährt wurden (etwa 29 Eier). Während der Gesamtlebensdauer verzehrte ein Raubmilben‐Weibchen im Durchschnitt 969 Eier oder 438 unreife oder 346 erwachsene Beutetiere, von denen mehr als 93% während des Imaginalstadiums verbraucht wurden. Männchen lebten kürzere Zeit und vertilgten weniger Beute als die Weibchen. Der Räuber konnte sich an Dattelpalmen‐Pollen entwickeln und erfolgreich fortpflanzen, jedoch mit einer geringeren Rate. Bei dieser Ernährung dauerte die Entwicklung bis zur Imago 10,5 Tage und ein Weibchen legte im Durchschnitt 16,6 Eier. Mit Stechpalmen‐ und Baumwoll‐Pollen oder an Süßkartoffel‐Blättern entwickelten sich die Larven nicht bis zur Imago.
Zusammenfassung Es wurden die Morphologie, Biologie und Schadensweise der beiden an Dattelpalmen schädlichen Milben Raoiella indica Hirst und Phyllotetranychus aegyptiacus Saved in ägypten untersucht. Die erstgenannte Art hat zwei Nymphenstadien, die letztere nur eins. Phyllotetranychus hat eine längere Gesamtentwicklung als Raoiella, was z. T. in der längeren Inkubationszeit begründet ist. Freilandbeobachtungen ergaben, daß die zwei Arten ihre Entwicklung und Reproduktion zwar im Winter fortsetzen, jedoch in verlangsamter Form.
The production of arabica coffee in Indonesia is still low because of leaf rust disease suppression caused by Hemileia vastatrix. Basically, it can produce well in the overlapping zone (1000-1500 masl). This potential can be used as basic for intensifying arabica coffee cultivation to the lowland. For anticipation steps to reduce the spread of leaf rust can be done by increasing the production of polyphenol as plant resistance. The addition of mineral element such as silica, boron, iodine, calcium, and potassium can stimulate the synthesis of plant polyphenol. In this research, five minerals above were tested into 7 treatment with single factor RCBD, that is without additional of the mineral element, 150 mg L-1 Si, 300 mg L-1 B, 3000 mg L-1 Ca, 20.000 mg L-1 K, 300 mg L-1 I, and the combination/mix of five mineral elements. The laboratory analysis shows that calcium able to produce the highest polyphenol, but it is not a real difference with silica. The polyphenol that synthesized by Si, I, and K was able to reduce the leaf rust incidence until 78,13%, while Ca can reduce the incidence up to 71,88%.
Lowland arabica coffee can be affected by leaf rust and its decrease the coffee production up to 80%. The resistance level of the plant can be determined by the content of cellulose, lignin, calcium pectate, and polyphenols in leaf tissue. Many publications reported that the mineral element could increase the content of the metabolites. This study aimed to determine the effect of Si, B, I, Ca, and K on the incidence of leaf rust attack. The experiment was carried out at 400 m a.s.l. in 2018. The experimental subjects were KT variety, which was six years old. The experiment used a randomized block design with seven treatments. The results showed that there were 1) decrease the number of leaves affected by rust between first and second observation, and 2) compared to controls, all treatments has decreased the incidence of attacks leaf rust disease. Conclusion: There is a tendency of differences in the incidence rate of attack of leaf rust disease in each treatment. Control plants showed the highest incidence rate of 1.25%, while the lowest incidence was affected by Silica, iodine, and potassium, which were 0.63%. The treatment of silica and iodine was able to reduce the highest number of colonies Leaf Rust.
Pengabdian kepada masyarakat sebagai Tri Dharma Perguruan Tinggi, harus dilakukan secara kontino demi sebagai penerapan sebuah ilmu pengetahuan yang dimiliki serta sebagai wujud kepadulian kepada masalah-masalah atau fenomena sosial yang terjadi pada masyarakat umum. Dengan adanya kegiatan pengabdian ini diharapkan menjadi solusi atau mampu mengatasi masalah-masalah atau fenomena sosial yang terjadi pada masyarakat tersebut. Tanpa kepedulian dari kelompok atau masyarakat akademik, maka sulit untuk menumbuhkan sumber daya manusia yang berdaya dan berpengetahuan luas. Salah satu pendampingan pembinaan yang dilakukan adalah, 1) sosialisasi pencegahan covid 10; 2) pembinaan baca tulis al-Quran; 3) pembinaan ibadah; dan 4) pembinaan moral atau akhlak anak/remaja. Harapan dari kegiatan pengabdian menjadi solusi dan pengatehuan praktis bagi masyarakat, anak-anak dan remaja.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.