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Kazuo HIRAI
1991Volume 1991Issue 38 Pages
159-160
Published: November 01, 1991
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Field survey on overwintering larvae of
Parnara guttata (BREMER et GREY) was carried out from Dec. 1990 to March 1991 in rice fields of National Agriculture Research Center, Yawahara Ibaraki Pref. In December several larvae were found in bag-formed leaves of regenerated younger rice plants. One fourth-instar larve was found inside of a dead stock at the same height as the ground. Probably this is the most northest finding of overwintering larva in this species.
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Toshimitsu NAGANO, Kazuo HIRAI
1991Volume 1991Issue 38 Pages
161-162
Published: November 01, 1991
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Tomoyuki YOKOSUKA, Keinosuke HARA, Ryutaro KOMORI
1991Volume 1991Issue 38 Pages
163-164
Published: November 01, 1991
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Toshimitsu NAGANO, Kazuo HIRAI
1991Volume 1991Issue 38 Pages
165-167
Published: November 01, 1991
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Toshimitsu NAGANO, Kazuo HIRAI
1991Volume 1991Issue 38 Pages
169-170
Published: November 01, 1991
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Nobuo MORIMOTO
1991Volume 1991Issue 38 Pages
171-173
Published: November 01, 1991
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Kunio NAKAJIMA, Keinosuke HARA, Michio NAKATA, Ryutato KKOMORI
1991Volume 1991Issue 38 Pages
175-176
Published: November 01, 1991
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Shiro AKUTSU, Shun-ichi YABUKI, Hideo TAKEZAWA
1991Volume 1991Issue 38 Pages
177-179
Published: November 01, 1991
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Naoki IWATA, Akio TAKAHASHI, Ichio SENBONGI, Yukio KANAI
1991Volume 1991Issue 38 Pages
181-184
Published: November 01, 1991
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(4) Effect of granular insecticides applied in furrow by a dispenser attached to a transplanter
Ichio SENBONGI, Satoru KOYAMA, Sadatoshi HAYASHI, Toshihiko OKISHIMA
1991Volume 1991Issue 38 Pages
185-186
Published: November 01, 1991
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Kuniyosi TOMIZAWA, Hiroyuki IKEZAWA, Naoki IWATA, Ichio SENBONGI, Nobu ...
1991Volume 1991Issue 38 Pages
187-189
Published: November 01, 1991
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Tsutomu SAITO, Setsuo TAKESHIMA, Yoshiaki KOBAYASHI
1991Volume 1991Issue 38 Pages
191-193
Published: November 01, 1991
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Twelve of twenty-six larval populations, which were reared from separate egg-masses collected in Shizuoka Prefecture, showed high resisitance to methomyl. Change of methomyl susceptibility by selfing or mating between field populations and a susceptible strain, was demonstrated. Several pyrethroids were effective against methomyl resistant populations.
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Hiroyuki HIRADE, Yoshiaki KOBAYASHI
1991Volume 1991Issue 38 Pages
195-196
Published: November 01, 1991
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Takashi AMANO, Atsuo MOCHIZUKI, Yoshiaki KOBAYASHI
1991Volume 1991Issue 38 Pages
197-199
Published: November 01, 1991
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Hisashi NAGATSUKA
1991Volume 1991Issue 38 Pages
201-202
Published: November 01, 1991
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Isuke ICHIHARA, Koichi KOGURE, Akira SHIMANO
1991Volume 1991Issue 38 Pages
203-206
Published: November 01, 1991
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Tsutomu SAITO
1991Volume 1991Issue 38 Pages
207-208
Published: November 01, 1991
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Light-colored forms were produced at higher temperatures and dark-colored forms were produced at lower temperatures in a clone of A.
gossypii isolated from melon. These color forms in the clone or a population of melon did not have difference of aliesterase activity, associating with organophosphorus resistance.
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Takashi FUKUDA, Kenji AIDA
1991Volume 1991Issue 38 Pages
209-210
Published: November 01, 1991
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Fumitaka IKEDA
1991Volume 1991Issue 38 Pages
211-212
Published: November 01, 1991
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Yoshifumi ITO, Yasutaka SUZUKI
1991Volume 1991Issue 38 Pages
213-215
Published: November 01, 1991
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Akio TATARA
1991Volume 1991Issue 38 Pages
217-219
Published: November 01, 1991
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Takehiko MATSUI
1991Volume 1991Issue 38 Pages
221-222
Published: November 01, 1991
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Larvae of
Anomala cuprea were maked at abdominal segments (9, 10th) with a heated wire. Thirty maked larvae were released in the sweet potato field (7.2m×25m). Two of them were recaptured at two sites of 13.9m and 17.1m away from the released point, and nineteen non-maked larvae were collected after 20 days from the date of release. As survival rate of larvae was assumed to be30%-40%, number of larvae in this field was estimated to be 94 to 126.
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Yasuo UEDA
1991Volume 1991Issue 38 Pages
223-224
Published: November 01, 1991
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Sounds produced in soil by larvae of cupreous chafer were recorded on tape with a concrete microphone. The recorded sounds showed that larvae are always active in soil. The sounds did not show any periodicity, but suggested larval movements would alternate with the resting periods.
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Shiro AKUTSU
1991Volume 1991Issue 38 Pages
225-227
Published: November 01, 1991
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Toshiyuki KAWANA
1991Volume 1991Issue 38 Pages
229-230
Published: November 01, 1991
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Hiroshi FUKUDA, Toshiyuki KAWANA, Atsuo KUBOTA, Takeshi HAYASE
1991Volume 1991Issue 38 Pages
231-233
Published: November 01, 1991
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Nobutake HABU
1991Volume 1991Issue 38 Pages
235-236
Published: November 01, 1991
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As a result of toxicity test using the following insecticides (thocyclam, buprofezin, chinomethionate, ethofenprox, fenpropathrin), thocyclam showed the highest toxicity to adults and ethofenprox to the 4th instar larvae of the sweetpotato whitefly.
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Atsuo KUBOTA
1991Volume 1991Issue 38 Pages
237-238
Published: November 01, 1991
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Kaichi FURUHASHI
1991Volume 1991Issue 38 Pages
239-240
Published: November 01, 1991
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Makoto MINAMISHIMA, Yasumi HAGIHARA
1991Volume 1991Issue 38 Pages
241-243
Published: November 01, 1991
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Kiichi SHIMIZU, Akira SAKUAMI, Tomoaki HONGOU
1991Volume 1991Issue 38 Pages
245-247
Published: November 01, 1991
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Hiroshi HIRAI, Ryuuji HIROTA
1991Volume 1991Issue 38 Pages
249-250
Published: November 01, 1991
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Ryuuji HIROTA, Hiroshi HIRAI
1991Volume 1991Issue 38 Pages
251-252
Published: November 01, 1991
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Koichi SAITO, Mamoru WATANABE, Yoshihiko SAITO, Takeshi HONGO
1991Volume 1991Issue 38 Pages
253-255
Published: November 01, 1991
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Shun-ichi HAGIYA, Masatoshi KASE, Takashi SHINGYOUJI
1991Volume 1991Issue 38 Pages
257-259
Published: November 01, 1991
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Masaru OGAWA, Shun-ichi HAGIYA
1991Volume 1991Issue 38 Pages
261-263
Published: November 01, 1991
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Akihito OZAWA, Masanao SATOU, Tokio MAKINO
1991Volume 1991Issue 38 Pages
265-267
Published: November 01, 1991
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Calcium cyanamide was applied simultaneously on 3ha of habitat of apple snail,
Pomacea canaliculata LAMARCK, in Toyoda-Cyo Shizuoka Pref. for the purpose of eradication of the snails. Mortality of the snails was lower in paddy fields where water depth decreased more than about 3cm in a day, and as a result the snails were not eradicated. To eradicate the snails, the depth of water should be less than 3cm when calcium cyanamide applied.
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Shin-ichi FUKUDA
1991Volume 1991Issue 38 Pages
269-271
Published: November 01, 1991
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Yukihiro KUNUGI, Yasuo TERAI
1991Volume 1991Issue 38 Pages
273-275
Published: November 01, 1991
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In field trials, phytotoxicity symptoms on young grape leaves sprayed with Bordeaux mixture were reduced by including the paraffin adhesive, “Kikunou”. The most effective concentration of “Kikunou” which did not decrease control efficacy of downy mildew on grapevine was 0.25%.
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Yuko TOBITA, Kazuko KONDO, Reiichi AKANUMA
1991Volume 1991Issue 38 Pages
277-278
Published: November 01, 1991
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The soil residue of PCNB, which is much used in vegetable-growing districts, was measured for six months in the open soils and in the soils covered with black plastic mulch. The rates of disappearance of residues of PCNB were different under these two conditions. In the plastic mulched soil, PCNB remained at high concentration. The residual concentration both of the metabolite and the impurity of PCNB were lower than that of PCNB, and the rate of disappearance of them in the open soil was not so different from that in the plastic mulched one.
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Seisaku UMEMOTO
1991Volume 1991Issue 38 Pages
279-280
Published: November 01, 1991
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1991Volume 1991Issue 38 Pages
281-285
Published: November 01, 1991
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