Kit qua nghien cifu khoa hgc BVTV-So 6/2015
caused by Altemaria alternata (Fr.) Keissler. J. Gen.
Plant Pathol 68(4); 321 - 325.
8. Simmons E.G., 2007. Alternana: An identification manual CBS Fungal Biodiversity Centre, the Netherlands, pp. 248 - 251.
9. Slavov S., Mayama S. and Atanassov A., 2004.
Toxin production of Altemaria alternata tobacco
pathotype. Kobe University, Japan. Biotechnoi. &
Biotechnol. Eq, pp 90 - 95.
lO.Tomioka K., SaloT. and Koganezawa H., 2000.
Mangold leaf spot caused by Altemaria tageUca new to Japan. J. Gen. Plant Pathol &Q{4): 294 - 298.
Phan bien: TS. Ngo Vinh Viln
NGHIEN CU'U SU- DUNG BO 0 U 6 l KJM Eparchus sp. (Dennaptera: Forticulidae)
T R O N G P H 6 N G C H 6 N G REP SAP M^M NAU Coccus hesperidum LinnaeusHAI CA PHg & TiNH SON LA
Research on Application of Earwig Eparchus sp.(Dermaptera: Forticulidae) to Control Soft Brown Scale Coccus hesperidum Linnaeus on Coffee in San La
B i l l T h j SLPU, V U Q u a n g Giang, Hoang Van T h a n h , BOI T h j Hdng T h a m Khoa Ndng LSm, Dai hoc Tay BSc. San La
NgkynhSnbai: 12.8.2015 Ngky chip nhkn dSng 18.9.2015 Abstract
Our recent study recorded 10 natural enemy species of soft brown scale Coccus hesperidum Linaeus.
Experiments which were conducted in lab and in field from 2013 to 2014 determined the Eparchus sp.'s effectiveness In soft brown scale density controlling. In Entomology expenment under Laboratory condition at Tay Bac University (Son La, Viet Nam), we fed them with artifical diet and soft brown scale C. hesperidum L, The results demonstrated that all stages of Eparchus sp, were not different by the sort of food. The data of life cycle, oviposition capacity and egg hatchabiiity associated to eanh^igs eating soft brown scale were 63.90 ± 1.95 days;
112.40 (eggs/femalle) and 84.26 (%) respectively These figures associated to the ones eating artificial diet were 64.50 ± 1.33 days; 100.23 (eggs/female) and 81 99 (%) respectively, TTie difference of Eparchus sp. at prey stages indicates that the mature consumed second instars more than other stages.
Key words: Coccus hesperidum L., Coffee. Eparchus sp , predator L O A T V A N D ^
S y cd mdi cOa rdp sdp mem ndu hai cay cd phd da d u g c ghi nhdn tir Idu va trpng nhung nam g i n ddy, khi linh hinh su- dung thuoc hda hpe v d i tan s u i t cdng eac, chiing t r d Ihdnh dich hgi chii y l u vd pho b i l n . Theo Pham Thi V u g n g (2000) vd Vu Quang Giang (2011), d l i v d i ed phe che (Coffea Arabica) tai S a n La, lodi rdp sdp m i m ndu Coccus hesperidum Linnaeus Id d l i tugng gdy hgi nguy h i l m , Idm giam ndng s u i t va c h i t lugng san pham Rep sdp mem ndu chich hiit nhya cua cdy cd phd; nhung edy bi d l i lugng
ndy hgi ndng Id nho, gidn, edy edi cpe, qua nhd, ryng Rdp sdp mem ndu t i l l ra dich mgt Id mdi Irudng thuan lai eho n i m mudi den phat t r i i n . Chinh n i m mupi den nay lam giam qua trinh quang hgp, giam sue c h i n g chiu cua cdy.
D l phdng fry loai rep sap m i m nau nay mdt cdch cd hidu qua d n p h i i hgp hdi hda cac bien phap n h l m han c h l s u gay hai cua chiing gdy ra va giam thieu s y d nhidm mdi frudng va san p h l m ed phe, V d i xu hudng phdt trien ndng nghiep ben vOng, bidn phdp sinh hpc ngay cang d u g c ChO trpng trong phdng trir djch hai ndng
K i t qua nghien ciru khoa hpc B V T V - S 6 6/2015
nghidp. Nghidn cdu nay ldp Irung nghien cuu ddc diem sinh hpc vd kha ndng an m l i cua bp dudi kim Eparchus sp. d u g e sir dyng trong phdng trtr rdp sdp m i m nau C. hesperidum L. hai cd phd tai San La, V\pt Nam.
2. VAT LIEU VA PHUONG PHAP NGHIEN ClKj 2.1. V | t li#u nghien cu>u
Lodi bp dudi kim Eparchus sp. vd lodi rdp sdp m i m ndu Coccus hesperidum L. d u g c thu b i t trdn cd phd chd tai xa C h i i n g Ban, huydn Mai San, tinh San La.
2.2. Phuvng phap nghien CLFU
2.2.1. Phuang phSp diiu tra ngoSi ddng rupng
• Xac dinh thanh phdn thien djch cua rep sdp mdm nau: Chon 5 v u d n ca phd dgi dien cho edc y l u t l nhu dia hinh, c h l dd canh tde, tuoi cdy. M i l v u d n ed didn tfch 0,5 - I h a . Mdi v u d n d i l u tr_a 20 d i l m , D i l u Ira dmh kJ 10 ngdy / i l n . Tai mdi d i l m dieu tra quan sat k? todn bd cay cd phd phdt hidn cdc lodi Ihidn dich cd mat trong q u i n I h l lodi rdp sdp m i m ndu. Sau dd thu thdp chting d l Idm mdu, bao quan, djnh loai. De ed thdnh p h i n ong ky sinh, t i l n hdnh thu rdp sdp m i m ndu dem v l phdng nudi vd theo ddi eho den khi chiing c h u y i n -sang pha phdt due sau ( n l u khdng bi kf sinh) hodc x u l t hien ong ky sinh ( n l u bj ky- sinh). Thu Ihdp cdc m i u ong kf sinh vd gidm djnh
- Xdc djnh chi s l h^i cOa rep sap mem nau:
D i l u tra djnh kJ 7 ngdy/lln Irdn 3 vudn cd phd chd c l dinh (mdi v u d n 1 ha) d t u l i kinh doanh bj n h i l m rdp sdp mem ndu. Tai moi v u d n d i l u tra 30 diem (mdi d i l m d i l u fra 1 cdy), mdi cdy lay mau 12 cdnh phdn bo d i u 3 t i n g va 4 hudng Sau dd phdn d p mdc dd n h i l m rdp sdp m i m ndu theo thang 5 d p :
+ d p 1. d u d i 25% didn tich cdnh ed rdp sdp m i m ndu, cdc cd I h l phdn b l rai rdc;
+ d p 2: 25% d i n d u d i 50% didn lich cdnh ed rdp, edc d the phdn b l chua day dde,
+ d p 3: 50% d i n d u d i 75 % dipn tich ednh bi n h i l m r$p sdp m i m ndu, rdP sdp mdm ndu cd s l lugng cao, phdn b l h i u h i t tren b l mdt cdnh d i l u Ira;
+ d p 4: 2 75 % di0n lich cdnh bj nhidm rpp sdp m i m ndu. rdp sdp m i m ndu phdn b l ddy ddc frdn cdnh d i l u tra.
- Xac djnh didn b i l n eda bp duoi kim: Trdn 3 v u d n d i l u tra chf s l rdp sdp m i m ndu, song song d i l u Ira s l lugng bp dudi kim theo 10 diem ngdu nhidn Iren d u d n g chdo gdc. M l i d i l m 1 ho bdy (kich Ihudc moi h i 20 x 20 x 5 cm, ddy h i trai nilon, bdn trong cd hon hgp dai bdt + Irlu muc Iheo ty Id 3 : 1 ; mdt h i phu Id cdy cd phd). 7 ngay/lan k i l m fra xde djnh s l lugng bp dudi kim ed Irong h i .
2.2 2. Phuang phSp nhSn nudi quin thi bQ dudi kim
Nhan nudi bp dudi kim b i n g 2 loai Ihuc dn:
Rdp sap m i m ndu vd Cdm trirng cua Tmng ldm Nghidn ciru Chim Ba Vi (Thdnh p h i n : Trirng gd, qua ddu chin, ddu t u a n g , bOt tdm, bdt ngd, bdt nhdng tdm, vitamin t i n g hgp, Khodng chit) Irong thting nhya cao 26em ; d u d n g kinh 26 cm. Ddy thimg ldi mdt Idp gid I h l bdng 2/3 chilu cao Ihung nudi. Gid the sir dyng Id h i n hgp d i t b | t : trau muc theo ty Id 3:1. Trdn b l m§t phu 1 Idp Id cd phd khd, 1- 2 ngdy Ihay thirc dn mdi mdt Iln, Phun nudc giti' dd I m gid t h i nudi dgt 70%.
2.2.3. Phuang phkp xkc dinh mpt s6 dpc diim sinh vkt hoc cua bg duoi kim
- Xkc djnh thdi gian phdt t r i i n cdc pha vS vdng ddi eua bp dudi kim. Nudi 30 ed I h l bp dudi kim Eparchus sp. trong dieu kidn nhi^t dp phdng Ihf nghfem Irudng Dai hpe Tdy B i c , m l i h i p thd 1 bp dudi kim mdi nd, ddy hijp'ddt bdng thim nudc d l giu am dd. Sir dyng hdp nhya nhd, nip khodt Id vd ddn lai b i n g ludi m i t nhd. Thirc dn nudi Id rdp sdp m i m ndu vd cdm trirng. Hdng ngdy thay thirc dn, k i l m Ira vd b l sung nudc vdo bdng t h i m vd quan sdi xdc dinh thdi gian phdt dye cua cdc pha. Thf nghidm d u g c theo ddi d i n khi Irudng thdnh e h i l sinh ly.
- Xac djnh kha ndng de trirng, ly td trirng nd cua bo dudi kim: Nudi 1 bp dudi kim d\/c vd 1 bp duel kim edi mdi vO hda trudng thdnh Irong hdp nhya cao 18 cm, d u d n g kinh 11 cm. Gid t h i vd thu'c an g i l n g nhu phuang phdp nhdn nudi q u i n I h l . Thi nghiem d u g c t i l n hdnh Irdn 30 edp bp dudi kim. Theo ddi s l qua trirng n d Irdn m l i I trung d l xde djnh ly Id IrO-ng n d . S l I trirng Iheo ddi n = 22
2 2.4. XSc dmh khk nSng tiPu thg rpp skp mimnSu cua bg dudi kim Epachus sp.
T i l n hdnh ddnh gid sO-c dn cua bp dudi kim vdi cac pha phdt dye cua rdp sdp mem ndu (r$p non l u l l 1. rdp non l u l l 2, rdp non l u l l 3, Irudng 24
K i t qua nghien c u u khoa hpc B V T V - S o 6 / 2 0 1 5
thdnh). Cho canh cd phd chira 20 con rdp sdp m i m ndu cimg l u l l , ctmg kfch c d vac hop nhya I h l lich 2 Ift. Mdi hdp tha 1 bp dudi kim trudng thdnh, bd ddi 24h, theo ddi sau 24h d i m s l lugng r^p sap m i m nau cdn lai. Thf nghi$m d u g c l i l n hdnh v d i n = 30 bp dudi kim.
3. KET QUA VA THAO LUAN
3 . 1 . T h a n h p h i n t h i e n d j c h cua rdp s a p mdm nau (Coccus hesperridum L.)
Thanh p h i n cdn trung dn thjt rdp sdp m i m ndu khd phong phii v d i 10 lodi khac nhau, thude
4 bd, Irong dd 5 lodi bp riia t h u | c vdo hp Coccinelidae, bd Coleoptera; 2 fodi sdu dn r$p Ihudc hp Noctuidae vd- hp Pyraiidae (chua djnh danh) IhuOc bd Lepidoplerd; vd 2 lodi thugc hp Forticulidae, bd Dermaplera va 1 lodi thude hp Encyrtidae, bd cdnh mang Hymenoptera.
Trong dd bp rtia do, bp dudi kim den x u l t hi^n nhilu nhat, day Id fridnh p h i n rat pho biln va cd tdc dyng han c h l s l lugng quan t h i rdp sdp m i m ndu.
Bp riia khing l l ; bp riia dd v i l n den; bp rtia dd 6 v i n den x u l t hidn frung binh, fl x u l l hidn hgn Id bp riia den, bp dudi kim ndu vd sau dn rdp sdp 1, 2
Bang 1. T h a n h phdn t h i e n d j c h cua rep sap m i m nau (Coccus hesperidum L.) TT
1 1 2 3 4 5 II 6 7 III 8 9 IV 10
Ten Vidt Nam Ten khoa hpc Hp Mircdd
phi biln Bg canh cii>ng (Coleoptera)
Bp rtia k h i n q l l Bp rtia 6 v i n den Bp rtia dd v i l n den Bo rtia den Bp rtia do
Synonycha qrandis (Thunberq) Menochilus sexmaculatus (Fabrieius) Chilocorus sp.
Chilocorus niqritus (Fabrieius) Rodolia sp.
Coccinellidae Coecinellidae Coccinellidae Coccinellidae Coecinellidae
++
++
++
+ ++++
6 6 c a n h da (Dermaptera) Bp dudi kim den Bp dudi kim ndu
Eparchus sp.
Nesogaster sp
Forticulidae Forticulidae
+++
+ Bg canh v a y (Lepldoptera)
Sdu dn rdp sdp 1 Sdu dn rep sdp 2
Eublemma amabilis (Moore) Chua dinh danh
Noctuidae Pyralidae
+ + B d c d n h m a n g (Hymenoptera)
Ong ki sinh | Micmterys sp. Encyrtidae +
(+;.' /(xuit hign (< 5% s6 didm bat g$p}; (++}: Xuat hign tnjng binh (5% - £ (+++;.- Xuit hidn nhieu (20% - £ 50% sd aim bat g$p); (++++): Xuit hign
20% sd diem bat g$p);
rit nhieu fS 50% sd diem batg$p) 3.2. M^t s l dac d i l m s i n h h g c cua b g dudi
kim Eparchus sp.
Bp dudi kim Eparchus sp. d u g c nudi Irong d i l u kidn phdng v d i 2 logi thirc an Id rdp sdp mem ndu C. hesperidum L. vd thirc dn nhdn tao (cdm trdng). Khi dn rdp sdp m i m ndu C.
hesperidum L., vdng d d i trung binh cua bp dudi kim Eparchus sp. kdo ddi 63.90 ± 1,95 ngdy; Ihdi gian s i n g cua trudng Ihdnh dye vd Irudng thdnh cdi t u a n g irng 9,17 ± 0,55 ngdy; 64,41 ± 1,95 ngdy. Khi nudi bp dudi kim Eparchus sp. bdng thirc dn nhdn tgc (cdm trirng), cdc chi tieu tren
ehenh Idch khdng ddng k l (bang 2). Ddy Id mOt trong nhO'ng c a s d nhdn nudi bp dudi kim Eparchus sp. chp vide sir dyng lodi Ihidn djch cd y nghia ndy trcng phdng trtr rdp sdp m i m ndu C.
hesperidum L. Irdn ed phd.
Kha ndng de frirng vd ty Id Irung nd cua mOt lodi anh hudng r i t Idn den su-c ldng ehung q u i n cua lodi dd. Thi nghidm ndy n h l m k i l m tra kha ndng sinh san cua bp dudi kim Eparchus sp. trdn 2 loai thifc dn khde nhau Id r^p sdp m i m ndu vd Ihuc an nhdn lao (cdm trirng). K i t qua d u g c t h i hien qua bang 3
K^t qua nghien CCFU l<hoa hoc B V T V - S o 6/2015
Bang 2. Thwi gian phat due cac pha cua bo Suoi kim Eparclius sp.
Pha ph^t due Tnjng Tuoi 1 TUOI 2 T u 6 i 3 T u 6 i 4 Tru-anq thanh tru-oc de trimq
V6nq doi Thai gian truong
thSnh s6ng
9
S
lhiy\ qian phat due (nq^y) Nuoi bang Ccim
trCpng 10,79 ±0,18
9,14±1,18 10,40 ±1,62 12,24 ± 0 , 8 3 10,71 ± 0 , 7 9 12.04 ± 2,62 64,50 ± 1 , 3 3 66,59 ± 2,49 9,61 ± 2,82
Nu6l bang rgp s5p mem nau 10,37 ± 0 , 7 4 9,32 ± 2,39 11,63 ± 0 , 3 9 12,86 ± 1 , 3 9 1 0 , 9 3 ± 1 , 3 1 11.07 ± 1 , 6 8 63,90 ± 1 , 9 6 64,41 ± 1 , 9 5 9,17 ± 0 , 5 5
Nhi§t d6 TB (C) 21,8 26,6 27,3 27,7 26,9 26,2
Am dp TB
(%)
78,0 79,6 77,9 77,3 75,5 67,5
Bang 3. S l lugng tru>ng va ty Id truing nd khi nudi bg dudi kim bdng thu'c an khac nhau Chi lidu theo ddi
S l trirng/l Iryng T i n q s l trirnq/BDK cdi Ty le trunq nd (%)
Thyc an nudi bo dudi kim Cdm frirng
44,69^
100,23^
81,89^
Rep sdp m i m nau 46,81^
112,40^
84,26"
Ghi chQ. SDK: bo dudi kim. Trong cOng ph^m vi mpt hang. nhCrng giS trj cd cung chO" cSi th€ hien SI/ sai khSc khdng cd y nghia d mCiv a = 0,05.
Qua theo ddi, chiing tdi t h i y bp dudi kim de trirng thdnh ttrng I . Moi con cdi trai qua 1- 3 I l n de trirng. Phdn lfch t h i n g kd d dd lin cdy 95%
eho thiy, s l qua Irirng/I trirng, t i n g s l frii-ng/bp dudi kim cdi khdng cd s y sai khdc khi ehung an cdm trung hay rep sdp m i m ndu Tuy nhien, thuc an kliac nhau anh hudng d i n ty le trung nd cua bo dudi kim. Khi nudi chiing b i n g cam frirng, ty Id frirng nd trung binh 81,89% Sir dyng rep sdp m i m ndu cho chiing dn, ly Id tryng nd dat eao han (84,26%).
3.3. Kha nang han c h l rep sap m i m nau cua bg dudi kim Eparchus sp.
3 3 . 1 Diin biin chi s6 rpp skp mim nSu vk mat dp bo dudi kim Eparchus sp t^i Son La, Vipt Nam
Theo NguySn Van DTnh (2007), mdt trong 10 dac tinh doi vdi 1 loai b i t moi an thit cdn trting Id cd nai d vd ua thfeh ky ehu giong nhu con m l i . Khi dieu tra thanh p h i n thien dich cua rdp sdp m i m ndu, xdc dinh duge s y cd mdt eiia bo dudi kim Eparchus sp. dong thdi tren d i n g rudng. Day la trong nhung ca s d cho viee sir dung lodi thidn dich cd y nghTa trong phdng trtr rdp sdp m i m nau.
S6 Imms EparcHas spJh^
Wgjiv ffeu Xr9
Hinh 1. D i l n b i l n chi so r^p sap m i m nau vd so lu>9>ng bg dudi kim Eparchus sp.
tai xa Chieng Ban, huydn Mai S e n , So-n La
Dien bien trcng hlnh 1 cho t h i y , trong thdi gian dieu tra ttr thang 9 den thdng 11 tai xd Chiing Ban, Mai San, San La cho t h i y rep gdy hgi mgnh vdo Ihdng 9 - thang 10 Chi s l hai cao n h i t vdo d i u thdng 10 sau dd gian d i n , Ttr thdng 7 d i n d i u thdng 10 nhidt dd trung binh thdng tuang d l i I n djnh (thang 8: 25,1 C, thdng 9' 24,5°C), nhung thdi gian ndy gida miia mua, lugng mua Idn (thang 7. 409,8 mm, thdng 8:
246,0 mm, thang 9: 448,7 mm), cd nhilu Irdn
K i t qua nghien ciru khoa hoc B V T V - S 6 6/2015
mua lo da fryc t i l p rCra trdi rpp, lam cho s l lugng r^p hai giam. T u dau Ihdng 10 trd di nhi0t dO giam d i n kdo Iheo s y giam d i n cua so lugng rdp hgi.
K i t qua d i l u tra cQng cho t h i y , so lugng bp dudi kim Eparchus sp. ly Id thudn vdi chi so hgi cua rdp sdp mdm ndu C. hesperidum L.
3.3.2 Sdc Sn con mdi cua bo du6t kim Eparchus sp.
Kha nang tidu thy vdt moi la m^l chi tiduquan trpng de ddnh gia higu qua cua thidn dich b i t moi Irong phdng trir sdu hai Ddy cung la ca s d d l eung edp du lugng thuc dn cho Ihidn djch b i t moi khi nhdn nudi chiing.
Bang 4. Sfrc an r f p s a p m i m nau C, hesperidum L. cua bo d u o i k i m Eparchus s p . Pha phat trien ciia rep
sap mem nau C. hesperidum L Rep non tuoi 1 Rip npn tuoi 2 Rep non tuoi 3 Rep truong thanh
Ngayl 4,80±0,69 7,15±0,81 6,35*0,75 2,60± 0,13
Si>c an cua bp duoi l(im Eparch Nqav2
4,34t0,47 7,03±0,53 5.42±0.23 2,40± 0,28
Ngay 3 4,70±0,29 6.2510,59 5.1510,35 2,20± 0.18
NqSv4 4,2010,57 6,7310,43 5,2710,15 1.9010,17
jssp (con/24h) Nqav5 4,0910.42 6,3410,72 6,1410,85 2,031 0,2
Nqav6 4,1210,39 6,66*0,65 5,1910,52 1,9710,18
Tnjnq binh 4.3810,47 7,1510,54 5,42±0,35 2,1810,18 Bang 4 cho I h l y r i n g , s l lugng rgp sdp m i m
ndu bi trudng Ihdnh bp dudi kim Eparchus sp.
tidu diet ngdy dau Id cao nhat, sau dd nhung ngdy sau sue dn cua chiing giam d i n Bp dudi kim dn rdp npn t u l i 2 Id n h i l u n h i t vdi s l lugng 7,15 ± 0,54 (eon/24h), sau dd d i n rep non tuoi 3 vdi s l lugng 5,42 + 0,35 (con/24h) vd Irudng thdnh bp
^dudi kim dn rdp sdp m i m ndu trudng thdnh it n h i t vdi s l lugng 2,18 ± 0,18 (con/24h). Ddy Id e g s d d l chting tdi tiep tyc ddnh gid kha nang khong c h l rep sdp mem nau cua bp dudi kim Eparchus sp. d ngodi d i n g rupng.
4. K t T LUAN
Trdn cdy ca phd, lodi bp dudi kim Eparchus sp x u l t hign vd dien b i l n ly \p thudn vdi lodi rdp sdp m i m ndu Coccus hesperidum Linnaeus. Vdng ddi cua bp dudi kim Eparchus sp kdo ddi 63,90 ± 1,95 ngdy khi chiing an rdp sap m i m ndu, trai qua cdc pha phdt dye trirng, l u triing vd trudng thanh, Trudng thdnh cdi cd sire de trirng ldn, de trung 1- 3 I l n , trung binh dgt 46,81 qua/ o; ty Id tryng n d cap, trung binh 84,26%. Trudng thdnh cd t h i dn i l l ca edc pha phdi t r i i n cua rep sdp mem ndu nhung chung dn rdp non t u l i 2 nhieu nhdt. Nhu vdy loai bp dudi kim Epachus sp. Id lodi b i t moi hi^u qua cd y nghTa Irong phdng Irtr rep sdp m i m ndu C. hesperidum L. hgi cd phd ehd.
Lcri cam on
ChOng tdi xin chSn thknh ckm an Ban quan ly dl/ kn JICA vk ckc chuykn gia Nhat Bkn dk h5 trg chOng tdi thi/c hipn nghien c&u nky. Nhdm tSc
gik xm ckm an nhCrng nguai dan t^i Chiing Ban.
Mai Son, San La dk cho nhdm s u di^ng ckc niiang ca phd di thu thSp ckc du'lipu.
TAI LIEU THAM K H A O 1. Biii Xudn Phong, Tru-ang Xuan Lam, 2010. Dgc dilm sinh hpc cua bp duoi kim den Euborellia annulipes Lucas va kha nang kim ham mat so sau khoang, sau ta hai rau hg hoa thap ty t^i nha lu-di, Tap chi khoa hgc vi phit triin 2010: tUp 8, s6 5:75 -771, trudng dai hpc Nong nghiep Ha Npi.
2. Nguyen Van DTnh, 2007 Giao trinh Bi^n phap sinh hpc BVTV. Nxb Nong nghipp, tr. 162-180
3. Nguyen Xuan Nipm, 2006 Si> dyng bp duoi kim mau vang Chelisochesvariegatus (Dermaptera:
chelisochidae) tieu di^l bp canh cirng h^i dira {Brontispa longissima), truy cgp 15/2/2009 (http //www.khoahoc.net/baivo/nguyenxuanniem/02110 6_ boduoikim.htm.)
4 Pham Thi Vupng va Truang Van Ham. 2000 Kit qua nghien c&u va ung dijng bign phip phdng trii mgt so siu h^i quan trgng trin ca phd a phia Bac, 1997-2000. Vien Bao v? thyc vgt, truy cdp ngay 19-6- 2009, (http://www.ppd. gov.vn/tapsanbvtv/ 2006 /so%203/bai%206.htm)
5 Vu Quang Giang, 2011. R#p sap mem nau Coccus hesperidum L (Homoptera: Cocddae) hgi ca ph6 che va bi?n phap ph6ng chong theo hudng long h(?p tai tinh Son La. lugn an TSNN, Dgi hpc Nong nghiep Hd N^.
Phan bipn: GS.TS. Pham Van Ldm