Ni Siluh Putu Nuryanti
Jurusan Budidaya Tanaman Pangan Politeknik Negeri Lampung

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Potensi Gulma Rorippa indica Sebagai Reservoar Parasitoid Hemiptarsinus varicornis untuk Mengendalikan Liriomyza huidobrensis Hamdani, Hamdani; Nuryanti, Ni Siluh Putu
Jurnal Penelitian Pertanian Terapan Vol 11, No 2 (2011)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v11i2.226

Abstract

Leafminers, Liriomyza huidobrensis (Blanchard) (Diptera: Agromyzidae) known as main pest at vegetable and ornamental crop. Hemiptarsinus varicornis (Girault) (Hymenoptera: Eulophidae) is one of ectoparasitoid larvae of L. huidobrensis that usually find in the field, however the levels of parasitism at field relative lower. Therefore we need the conservation technology of parasitoid in order to its population overflow so that its performance increases. Rorippa indica (L) have potential as reservoir of parasitoid H. varicornis, so that can be used as conservation medium of H. varicornis. Planting weeds R. indica among of chickpea crop, can decraese the population of adult and larvae L. huidobrensis significantly, increase adult population H. varicornis and larvae population L. huidobrensis parasitism by H. varicornis. Growth rate of population adult H. varicornis at block without weeds R. indica follow the pattern of regretion equation Y=0,1312X–0,2246 and Y=0,7172X+1,1 while at the block planted weeds R. indica. Growth rate of larvae population L. huidobrensis at block without weeds R. indica follow the pattern of regretion equation Y=0,9315X–0,9835 and Y=0,8647X+1,0875 while at the block planted weeds R. indica. Weeds R. indica can be used as reservoar parasitoid H. varicornis in the effort the conservation parasitoid. Keywords: Biological control, Leafminer, Liriomyza huidobrensis, conservation technology reservoir parasitoids, Hemiptarsinus varicornis
PENAMBAHAN BEBERAPA JENIS BAHAN NUTRISI PADA MEDIA PERBANYAKAN UNTUK MENINGKATKAN VIRULENSI BEAUVERIA BASSIANA TERHADAP HAMA WALANG SANGIT Nuryanti, Ni Siluh Putu; Wibowo, Lestari; Azis, Abdul
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 12, No 1 (2012): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.11264-70

Abstract

 A research was conducted to increase the virulence of Beauvaria bassiana to the rice bug, L.  acuta, by adding four different substances (materials) to the rice media to grow the fungus. The research was conducted from April to August 2011 at Polinela Laboratory, Bandar Lampung.  To do this a set of experimental unit consisting of five treatments and five replications were arranged in completely randomized design. The  four treatments were media made up of rice (rice based media) each given or added with four different materials such as rice skin powder, corn sugar, grasshopper powder and chitosan powder. The result showed that B. bassiana grown on rice media added with grasshopper powder or rice skin powder were able of causing mortality to the L. acuta as high as 78% and 71%, respectively, meaning that both mortalities were much higher than that of other replication. The virulence values of Beauveria bassiana  grown on those both powder were also higher than that of three others.
CHARACTERISTICS AND TOXICITY OF NANOEMULSION FORMULATION OF PIPER RETROFRACTUM AND TAGETES ERECTA EXTRACT MIXTURES Nuryanti, Ni Siluh Putu; Martono, Edhi; Ratna, Endang Sri; ., Dadang
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 1 (2018): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.1181-11

Abstract

Characteristics and Toxicity of Nanoemulsion Formulations of Piper retrofractum and Tagetes erecta Extract Mixtures. Nanotechnology has been used in the developing of botanical insecticide formulation for improving its stability and effectiveness. The research was aimed to make nanoemulsion formulations of Piper retrofractum fruits and Tagetes erecta flowers extracts and to evaluate their toxicity against brown planthopper (Nilaparvata lugens [Stål]) nymphs. The development of nanoemulsion formulaions was carried out by using the low energy method with inversion phase emulsification.  The toxicity of the four formulations was tested against brown planthopper nymphs using a contact method. Four nanoemulsion formulations were obtained.  The study showed that in the developing of the formulations, the type and level of emulsifier materials affected the physical characteristics of formulas, such as stability, surface tension, viscosity, particle size, and particle morphology. The nanoemulsion formulation containing 1% of the mixture of P. retrofractum fruits and T. erecta flowers extracts, 1.75% Triton X-100 emulsifier showed the highest toxic on the brown planthopper nymph, with the LC95 value was 0.15%.  The study indicates that nanoemulsion formulation of P. retrofractum and T. erecta extracts are potential to be developed as botanical insecticide to control brown planthopper of rice.
CHARACTERISTICS AND TOXICITY OF NANOEMULSION FORMULATION OF PIPER RETROFRACTUM AND TAGETES ERECTA EXTRACT MIXTURES Nuryanti, Ni Siluh Putu; Martono, Edhi; Ratna, Endang Sri; ., Dadang
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 1 (2018): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.1181-11

Abstract

Characteristics and Toxicity of Nanoemulsion Formulations of Piper retrofractum and Tagetes erecta Extract Mixtures. Nanotechnology has been used in the developing of botanical insecticide formulation for improving its stability and effectiveness. The research was aimed to make nanoemulsion formulations of Piper retrofractum fruits and Tagetes erecta flowers extracts and to evaluate their toxicity against brown planthopper (Nilaparvata lugens [Stål]) nymphs. The development of nanoemulsion formulaions was carried out by using the low energy method with inversion phase emulsification.  The toxicity of the four formulations was tested against brown planthopper nymphs using a contact method. Four nanoemulsion formulations were obtained.  The study showed that in the developing of the formulations, the type and level of emulsifier materials affected the physical characteristics of formulas, such as stability, surface tension, viscosity, particle size, and particle morphology. The nanoemulsion formulation containing 1% of the mixture of P. retrofractum fruits and T. erecta flowers extracts, 1.75% Triton X-100 emulsifier showed the highest toxic on the brown planthopper nymph, with the LC95 value was 0.15%.  The study indicates that nanoemulsion formulation of P. retrofractum and T. erecta extracts are potential to be developed as botanical insecticide to control brown planthopper of rice.
Potensi Gulma Rorippa indica Sebagai Reservoar Parasitoid Hemiptarsinus varicornis untuk Mengendalikan Liriomyza huidobrensis Hamdani, Hamdani; Nuryanti, Ni Siluh Putu
Jurnal Penelitian Pertanian Terapan Vol 11, No 2 (2011)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v11i2.226

Abstract

Leafminers, Liriomyza huidobrensis (Blanchard) (Diptera: Agromyzidae) known as main pest at vegetable and ornamental crop. Hemiptarsinus varicornis (Girault) (Hymenoptera: Eulophidae) is one of ectoparasitoid larvae of L. huidobrensis that usually find in the field, however the levels of parasitism at field relative lower. Therefore we need the conservation technology of parasitoid in order to its population overflow so that its performance increases. Rorippa indica (L) have potential as reservoir of parasitoid H. varicornis, so that can be used as conservation medium of H. varicornis. Planting weeds R. indica among of chickpea crop, can decraese the population of adult and larvae L. huidobrensis significantly, increase adult population H. varicornis and larvae population L. huidobrensis parasitism by H. varicornis. Growth rate of population adult H. varicornis at block without weeds R. indica follow the pattern of regretion equation Y=0,1312X?0,2246 and Y=0,7172X+1,1 while at the block planted weeds R. indica. Growth rate of larvae population L. huidobrensis at block without weeds R. indica follow the pattern of regretion equation Y=0,9315X?0,9835 and Y=0,8647X+1,0875 while at the block planted weeds R. indica. Weeds R. indica can be used as reservoar parasitoid H. varicornis in the effort the conservation parasitoid. Keywords: Biological control, Leafminer, Liriomyza huidobrensis, conservation technology reservoir parasitoids, Hemiptarsinus varicornis