Anagrus nilaparvatae (Pang et Wang) is an egg-parasitoid of rice brown planthopper (Nilaparvata lugens Stål). The objective of this study was to develop a mass-rearing technique of A. nilaparvatae. Mass-rearing was done using a plastic box (14 cm × 18.5 cm × 18.5 cm, made of plastic-mica, the upper side equipped with a 10 cm test tube), placed on a tray with rice seedlings containing an estimated of 11,130 eggs of N. lugens. About 355 adult parasitoids were successfully released per box when each box was infested with 50 parasitoids. The number of parasitoids produced were reduced to 164 adults when the infestation was made at 100 parasitoids per box. The emergence of parasitoids started around 07:00 am until 04:00 pm with the highest rate (36.2%) occured at 10:00 am. One plastic box cost only Rp10.000,-; thus the estimate cost to produce one parasitoid using this tecnique was Rp60,- These findings suggest that the plastik box is a simple and inexpensive technique for mass-rearing of A. nilaparvatae.
Acid sulfate soil productivity is low due to the low availability of nutrients and high levels of soil acidity. It needs the organic material and dolomite to create the growing medium to be balance on its nutrient available, both physical and biological characteristic on the acid sulfated land. The aim of this research was to know the respond of cacao germ and the optimal doses of organic fertilizer of palm oil mill effluent. This research was take place in Jambi during September 2012 until March 2013. The factorial completely randomized design was applied. The first factor was organic fertilizer of palm oil mill effluent doses (0, 70, 140 and 280 ml.polybag-1 or equivalent with 0, 28.000, 56.000 and 84.000 l.ha-1). The second factor was dolomit doses (0, 2 and 4 g.polybag-1 or equivalent with 0, 800 and 1600 kg.ha-1). Kakao Lindak Klon ICS 13 was used as indicator plant. The acid sulfated soil was taken from Lagan Ulu Village Tanjung Jabung Timur District Jambi Province. The result of the research showed that the respond of cacao germ toward to an organic fertilizer of palm oil mill effluent and dolomite useness effected on the increasing of vegetative growth. Generally conclusions showed that the combination of 800 kg.ha-1 of dolomite and 84.000 l.ha-1 organic fertilizer of palm oil mill effluent was the optimal treatment which show the maximum of plant high, crown dry weigh, leaf wide and root crown ratio.
Parasitoids are natural enemies of insect pests that can be used for biological pest control. Effective performance of parasitoid on the insect pest can be disrupted by the use of insecticides. This paper discussed the effect of insecticides on parasitoids, as well as the effect of deltamethrin insecticide on the behavior and biology of parasitoids. The effect of insecticides on parasitoids generally was studied by using sublethal dosage. Review of literatures indicated that deltamethrin insecticide disturbed parasitoids which affected the nervous system, and ultimately changed the behavior and biology of parasitoids. Inappropriate use of insecticide in the field reduced the ability of parasitoids in controlling insect pests.
ABSTRACTThe objective of the study were to find the dominant weeds in palm oil plantation beforeÂ application of weeds control using effective active compound of systematical herbicide. Research doneÂ in Glorious Countryside Petaling, public plantation, River Gelam, Muaro Jambi, Jambi Province inÂ January--Februari 2008. The research used active compound of herbicide gliphosate amineisoprophyll, 2,4 D-dimethyllamine, gliphosate isoprophyllamine + 2,4 D dimethyllamine, andÂ triasulphuron 75%. The study was conducted using Randomized Completely Design, with 5 replicates.Â Data were analyzed by Duncanâs Multiple Range Test (DMRT). Data analysis of weeds vegetationusing SDR values. Result found 5 dominants weed species before herbicide application were ImperataÂ cylindrica (with SDR value 27,8%), followed with Asystasia intrusa ( SDR = 9,4%), AffinaeÂ melastoma ( SDR = 9,2%), Repens panicum ( SDR = 8,2%), and Borreria alata ( SDR = 7,7)).Â Glyphosate isoprophyllamine of herbicide active compound which suitable to control grass weedÂ species; while 2,4 D dimethyllamine active compound more suitable to control the wide leaf weed.Â Imperata cylindrica controlled with herbicide using gliphosate isoprophyllamine active compounds.Â Asystasia intrusa and Affinae melastoma controlled with 2,4 D dimethyllamines active coumpound.Â Weed competition reduce of crop production.Key words: active compound, herbicide, weed, palm oil
ABSTRACTRubber replanting in Jambi Province started from 2006 to 2010 need millions high quality of rubber clon every year. Assesment was aimed to describe a potency of rubber seedling in every year mucipal in Jambi Province. Assesment was done in three month Maret to June 2006 in Tebo, Merangin, Sarolangun and Muaro Jambi by survey, interview with questioner of state breeder of rubber estate. Respondences were selected by purposive sampling. Result show each municipal has already TRUP. Quantity rubber seed was enough produced to fulfill their own need. Treat was occurred due to aviabilitty of entress, hence it needs a supply from other breeding places.Key words: High quality of rubber clon, Breeder, Entres, TRUP
This research aims at identification of 1) weeds domination in palm oil plantation prior to herbiside treatment and 2) displcement of domination of weed species after systemic treatment of herbiside. This research was conducted at peoples plantation area petaling jaya village, district of sungai gelam, regency of muaro jambi, province of jambi. Herbiside applied was with active isprophil amina gliphosate,2.4 D dimetiamina, and triasulphuron 75 %. Analysis of weed vegetation data was SDR value. The result of the analysis shours that there are 5 species that dominate. The 5 species are imperata cylindrica with SDR value 27,8%, Asystasia intrusa (9,4%), melastoma affinae (9,2%), panicum repens (8,2%), and boreria alato (7,7%). The application of herbiside with different active substance shows different displacement of weed domination..
This research was conducted to determine the species of the egg parasitoids in rice fields in Klaten, Jawa Tengah and Bantul, Yogyakarta. The egg parasitoids were observed by trapping them with rice plant (Cisadane) containingÂ eggs ofÂ N. lugens.Â The plants containing eggs of N. lugens were exposed in each field for two days. Ten plants of trap were placed along 300 m by transects at each location. Three species of egg parasitoids found in all rice fields were similar: Anagrus nilaparvatae, A. optabilis (Hymenoptera: Mymaridae) and Oligosita (Hymenoptera: Trichogrammatidae).Key words: egg parasitoids, rice cultivation,Â Nilaparvata lugens
IndonesiasÂ cocoaÂ plantationsÂ haveÂ aÂ commodityÂ isÂ the value ofÂ exports.Â It has beenin, there are manyÂ constraintsÂ in increasingÂ productivity.Â One is aÂ pest and diseaseÂ attacks.Â Government programs through Integrated pest control (PHT) on commodities cocoa plantation has pioneered since 1997 on five commodities including cocoa crops in some areas of Indonesia and in 2002 developed into six commodity in 12 provinces. The implementation of IPM through technology and Airy School IPM Integrated Pest Control (SL-PHT).Â The technology ofÂ PHTÂ to controlÂ FruitÂ PenggerekÂ CocoapangkasanÂ forms,Â such asÂ harvesting,Â biologicalÂ control,Â insecticideÂ applicationsÂ andveiling of theÂ fruit;Â to controlÂ ladybirdsÂ MacGregorÂ of the fruit areÂ mechanically,Â technicallyÂ cultures,Â biological andÂ chemical;Â While theÂ rottenÂ fruitÂ diseaseÂ to controlÂ cocoaÂ isÂ sanitation,Â reducingÂ moisture,Â cocoaÂ cropÂ plantingÂ and use ofÂ fungicideÂ resistant.Â In addition to technology, SL-PHT was also very instrumental in the implementation of IPM in the cultivation of cocoa.Â Implementation ofÂ SL-PHTÂ muchÂ improve theÂ knowledge and skills ofÂ cocoa farmersÂ in theÂ cultivationÂ of cocoaÂ and haveÂ a positiveÂ impactÂ in theÂ implementation ofÂ IPMÂ inÂ plantationsÂ of cocoa.Â In line withÂ this,Â thenÂ theÂ implementation ofÂ IPMÂ inÂ the cocoaÂ plantationsÂ of the peopleÂ can be madeÂ sustainableÂ if there isÂ synergy betweenÂ farmers, Governments, NGOs andÂ relatedÂ markets.Keywords:Â Cocoa,Â PHT, SL-PHT,Â PHTÂ CocoaÂ Technology
Host searching behaviour by a parasitoid includes orientation to the volatile compounds (odor) relesead by host or host plant. The aim of this study was to determine the changes in the orientation behaviour of Anagrus nilaparvatae (Pang et Wang), the egg parasitoid of rice brown planthoppers (Nilaparvata lugens (Stål)), after being exposed to sublethal concentrations of deltamethrin. The impact of residue on plants to the behaviour of parasitoid was also studied. The sublethal concentrations (LC10 and LC40) used were 0.023 ppm and 2.235 ppm, respectively. Deltamethrin applied to the rice plants were 12.5 ppm and 6.25 ppm, and its effect was observed at 3 hours, 1, 3 and 7 days after application. Orientation behavior was studied using Y-tube olfactometer. Application of deltamethrin at subletal concentration reduced the ability of surviving A. nilaparvatae to detect odors (volatile ompounds) released by the host, N. lugens. The higher the concentration of deltamethrin applied to the parasitoid or to the rice plants, the more prominent effect observed in the changing in the parasitoid behavious, in particular disruption to the parasitoid’s orientation to find their host. As consequences, effects of deltamethrin may lead to reduce the effectiveness of A. nilaparvatae as biological control agents in the field as a result of declining their searching capacity.
AbstractThis research aimed to know the main pest type and production of âliberika tungkal komposit (libtukom)â coffea plant (coffea sp.) in Betara District, West âTanjung Jabung. â Regency. This research was conducted in August to September 2016 at three villages e.g. Parit Tomo, Serdang Jaya, and Parit Panglong and two districts e.g. Mekar Jaya, and Â Betara. Â Survey method was used in this research by observing the farmer that managed their â libtukomâ coffee farming. Â Â The data collected were primary and secondary data. This experiment result showed that Â Â the main pests type of âlibtukomâ coffee plant Â Â isÂ âhypothenemus hampeiâ insect pest.Â Average intensity of attacks in the three research areas is 10.33% or itâs around 9.11% to 10.80%. While âlibtukomâ coffee production and its productivity in the three research areas isÂ 0,66 ton ha-1 year-1 to 0,67 ton ha-1 year-1.Keywords : main pest, intensity of attacks, liberika tungkal coffea.AbstrakPenelitian ini bertujuan untuk mengetahui jenis hama utama dan produksi tanaman kopiÂ liberika tungkal komposit (libtukom) (coffea sp.) di kecamatan Betara kabupaten Tanjung Jabung Barat. Penelitian ini dilaksanakan pada bulan Agustus sampai September 2016Â di Desa Parit Tomo,Â Serdang Jaya dan Parit Panglong, Kelurahan Mekar Jaya, Betara. Â Metode pengumpulan data pada penelitian ini menggunakan metode survei. Survei dilakukan pada petani sampel yang melakukan usaha tanaman kopi âlibtukomâ. Data yang dikumpulkanÂ adalah data primer dan data sekunder. Hasil penelitian menyimpulkan bahwa jenis hama utama yang menyerang tanaman kopi âlibtukomâ di daerah penelitian adalah hama jenis serangga hypothenemus hampei. Rata-rata intensitas serangan di tiga daerah penelitian sebesar 10,33% atau berkisar antara 9,11% - 10,80%. Sedangkan produksi dan produktivitas kopi âlibtukomâ di tiga daerah penelitian masing-masing berkisar antara 0,66 ton ha-1 tahun-1 sampai 0,67 ton ha-1 tahun-1.Kata kunci : hama utama, tingkat serangan, kopi liberika tungkal