Resurjensi merupakan salah satu masalah yang penting akibat penggunaan insektisida secara tidak bijaksana. Karena faktor-faktor yang menyebabkan terjadinya resurjensi cukup banyak maka kajian-kajian teknis strategis harus juga dilakukan secara komprehensif. Dalam kajian ini dibatasi pada kajian potensi insektisida piretroid dalam menimbulkan resurjensi pada wereng cokelat termasuk evaluasi pengaruhnya terhadap musuh alami dan reproduksi wereng cokelat. Terdapat pertanyaan yang mendasar berkaitan dengan insektisida yang diaplikasikan yaitu apakah terjadinya resurjensi karena senyawa tertentu (spesifik) atau secara keseluruhan (semua golongan bahan aktif insektisida golongan piretroid). Hal lain yang perlu dijawab adalah terjadinya resurjensi karena perkembangan serangga yang cepat akibat pengaruh fisiologi pada serangga wereng cokelat atau karena tertekannya populasi musuh alami di lapangan. Kemudian karena di lapangan berbagai komponen terlibat baik untuk pertumbuhan tanaman padi maupun serangga, maka hubungan antara pertumbuhan tanaman padi dengan serangga juga perlu dikaji sehingga tampaknya perlu melakukan pengkajian resurjensi ini dikaitkan dengan ketahanan varietas padi antara varietas tahan dan kurang tahan. Dari kajian ini diharapkan akan menjawab pertanyaan dasar apakah insektisida piretroid dapat menyebabkan resurjensi pada populasi wereng cokelat. Jika terjadi mekanisme apa yang terjadi.

4 Responses to “Si Serangga Yang Semakin Menjadi”

Leave a Reply

  • Microsoft to release Windows Phone 7.5 in China on March 21st 15 Maret 2012
    Microsoft on Wednesday began sending out invitations to the press for the company’s Windows Phone 7.5 Refresh launch event in China. According to Liveside, the event will be held in Beijing on March 21st. While the invitation doesn’t mention any specific handsets, HTC recently launched the Titan — becoming the first manufacturer to release a Window Phone dev […]
    Dan Graziano
  • Digital Bolex, a cinema-quality camera for the masses, shown off at SXSW [video] 15 Maret 2012
    During the annual South by Southwest conference in Austin, Texas, Digital Bolex showcased its retro 2k resolution RAW video camera. Up until now, RAW-capable video cameras were extremely pricey, costing tens of thousands of dollars or more. Relative to these high-end units, the Digital Bolex will be very affordable when it launches later this year. The Digit […]
    Dan Graziano
  • Custom radio files give Galaxy Note access to T-Mobile’s HSPA+ network 15 Maret 2012
    If you were looking to get your enormous hands on a Galaxy Note in the U.S. but have no interest in switching to AT&T’s network, you may be in luck. AT&T’s “phablet” was previously limited to EDGE speeds on T-Mobile’s network, making the device a much less appealing option. XDA-Developers forum members have managed to figure out a way to enable HSPA+ […]
    Dan Graziano
  • Oracle suit against Google goes to trial next month 15 Maret 2012
    A U.S. judge in San Francisco has scheduled the trial between Oracle and Google for April 16th, Reuters reported on Tuesday. Oracle sued Google in 2010, alleging that the Mountain View-based company’s Android operating system infringes Oracle’s intellectual property covering the Java programming language. In addition, the company is also suing Google for cop […]
    Dan Graziano
  • Android 4.0 update coming soon to 16 HTC devices 15 Maret 2012
    HTC on Wednesday confirmed that 16 of its devices will receive a “tasty treat of Ice Cream Sandwich.” An Android 4.0 update will hit the DROID Incredible 2, Amaze 4G, Desire S, Desire HD, EVO 3D, EVO Design 4G, Incredible S, Sensation, Sensation XL, Sensation 4G, Sensation XE, Raider, Rezound, Rhyme, Thunderbolt and Vivid. The Taiwanese company is currently […]
    Dan Graziano
  • Verizon to launch its 200th 4G LTE market on March 15th 14 Maret 2012
    Verizon Wireless on Wednesday announced it will add seven new markets to its nationwide 4G LTE network and expand the service in 17 current markets on March 15th. The company’s 200th LTE market will be Dothan, Alabama, where customers will soon be able to take advantage of the high-speed network. Other markets include Enterprise, Ala.; Naples, Fla.; Greenvil […]
    Dan Graziano
  • People want supersized cell phones, new study shows 14 Maret 2012
    A new study from Strategy Analytics found that smartphone owners in the U.S. and U.K. prefer devices with a 4-inch to 4.5-inch display, as long as the device is also thin. “Almost 90 percent of existing smartphone owners surveyed chose a prototype smartphone with a display larger than their current device,” commented Paul Brown, a Director in the Strategy An […]
    Dan Graziano
  • BlackBerry PlayBooks with HSPA+ and LTE radios pass through the FCC 14 Maret 2012
    Research in Motion’s BlackBerry PlayBook may be down, but it’s definitely not out. Over a year ago, the company revealed plans to release an LTE-compatible PlayBook as well as a 3G model that will work on HSPA+ networks. Details surrounding these variants have been few and far between, with some assuming they were simply canceled. As it turns out, two tablet […]
    Dan Graziano
  • First new iPad photo samples show vastly improved camera 14 Maret 2012
    It’s doubtful that anyone will ever find a way to avoid looking ridiculous while capturing images with a 9.7-inch tablet in public, but those unafraid of how they are viewed by peers will be pleased to know that Apple has delivered on its promised of a much improved camera in the new iPad. The camera on Apple’s previous-generation iPad 2 was subpar at best, […]
    Zach Epstein
  • Web host confirms The Pirate Bay is under investigation 14 Maret 2012
    Swedish registrar and Web host Binero on Wednesday confirmed earlier reports suggesting digital piracy hub The Pirate Bay is currently under investigation by authorities in Sweden. Members of The Pirate Bay team reported last week that they believe the site is currently the focus of a new investigation, and that Swedish police are planning to execute a raid […]
    Zach Epstein
arsip
kalender
Juli 2010
M S S R K J S
« Jun   Agu »
 123
45678910
11121314151617
18192021222324
25262728293031