All issues
Volume 1969 (1969)
- Issue 9 Pages 1-
- Issue 8 Pages 1-
- Issue Suppl8 Pages 1-
Volume 1969, Issue 9
Displaying 1-13 of 13 articles from this issue
- |<
- <
- 1
- >
- >|
-
Yoshiji TOGARI1969 Volume 1969 Issue 9 Pages 1-4
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSDownload PDF (768K) -
Tatsuo MANABE1969 Volume 1969 Issue 9 Pages 5-10
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSDownload PDF (827K) -
On the Mode of Action of SolanNorio SHIRAKAWA1969 Volume 1969 Issue 9 Pages 11-15
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSThis studies was conducted to obtain some informations on the mode of action of a selective herbicide, solan (CMMP) for tomato, carrot and japanese honewort.
(1) Both of Hill reaction and photophosphorylation of spinach chloroplast were inhibited strongly by solan.
50% inhibition by solan was observed at the concentrations of 2.7×10-6M for the Hill reaction, 1.4×10-6M for the non cyclic photophosphorylation and 5.3×10-6M for the cyclic photophosphorylation. It appears that main sites of action of solan are Hill reaction and photophosphorylation.
(2) The inhibition of the Hill reaction and non cyclic photophosphorylation by solan were investigated about several kinds of resistant and susceptible plants to solan. Both reactions were inhibited by solan regardless the kinds of plant.
(3) Hill reaction and photophosphorylation were inhibited additionally by addition of ethylthiometon, phenitrothion or dimethoate to solan. These organic phosphorous insecticides which reduce selectivity of solan in vivo, fairly inhibited Hill reaction and photophosphorylation by themselves at high concentration.View full abstractDownload PDF (618K) -
The Herbicidal Effect and the Utility under Condition of Plastic Mulch CultivationNorio SHIRAKAWA, Hiromi TOMIOKA, Kazutoshi NAKAMURA, Kunihiko TOGASHI1969 Volume 1969 Issue 9 Pages 15-21
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSThe herbicidal effect and the utility of vernolate under condition of plastic mulch cultivation were examined.
(1) The herbicidal activity of this herbicide was changed by the application methods. Descending order of activity was as follows:
mulching after incorporation of the herbicide in the soil≥mulching after treatment of herbicide on the soil surface>incorporation of the herbicide in the soil after treatment>the treatment of herbicide on the soil surface.
(2) It appeared that the time from treatment on the soil until the mulching with plastic sheets should be within twelve hours in order to expect sufficient activity.
(3) The hole off plastic mulch sheet had no influence to the herbicidal activity under the experimental condition using standardized goods.
(4) The depth of treatment of the herbicide in the soil was an important factor to the herbicidal activity, and the treatments at the depth from 0 to 3cm showed the highest activity.
(5) The herbicidal activity at high temperature (15-33°C) was more effective than low temperature (0-10°C).
(6) The vapor of this herbicide had herbicidal activity for the tested plants.
(7) The utility for tomato and tobacco was recognized on mulching after the treatment on the soil surface (after the transplanting).View full abstractDownload PDF (925K) -
Hiroshi WATANABE1969 Volume 1969 Issue 9 Pages 21-25
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSDownload PDF (713K) -
Haruo SATAKE, Masanobu KUWANO1969 Volume 1969 Issue 9 Pages 25-29
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESS(1) The tubers of Sagittaria pygmaea Miq. likely had not the dormancy for germination, however, the dormancy was noticed in rooting and vernalization was effective for the dormancy breaking.
(2) The tubers which had awaked from dormancy, got emergence under submerged condition possibly at mean atmospheric temperature 14-15°C.
(3) The limit depth for emergence out of the tubers would be about 15cm below the surface of the soil. Emergence from the layers deeper than 10cm was seldom observed. The depth of the tuber-formation was relatively shallow, and almost of them was located at 0-5cm layer.
(4) Several herbicides useful for Sagittaria pygmaea Miq. control were found through the screening tests.View full abstractDownload PDF (739K) -
2. Several Characteristics of Sprouting and the Development at Early StageKunikazu UEKI, Toshio SAKAGUCHI1969 Volume 1969 Issue 9 Pages 29-36
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSThe present investigation was undertaken in order to evaluate the laws of sprouting and the modes of action of the factors influencing the early stage of development of kuroguwai.
1) The buds covered with prepuces are regularly located on the tuber. Differences in sprouting activity due to the bud position are existent. Moreover, the sprouting activity of each bud is affected by the number of prepuces.
2) The elongation of the negative-geotropic rhizome in water is promoted under low oxygen concentration below 1mg/l and dark condition, but suppressed above 3mg/l. On the other hand, the differentiation of stem and root is promoted only under high oxygen concentration above about 6mg/l.
3) Under intermittent irrigation in pot experiment the plural primordiums of stem and root are formed. The new primordiums begin to be formed about one week after planting.View full abstractDownload PDF (1099K) -
Yasushi WATANABE, Fumihiko HIROKAWA1969 Volume 1969 Issue 9 Pages 36-41
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSEffects of some treatments in winter on the dormancy of seeds of common ten annual weed species in Hokkaido were studied.
1. Seeds of Chenopodium album, Polygonum lapathifolium, P. longisetum and P. nepalense had a deep dormancy at the time of maturity. In these seeds, dormancy was broken by burial in the soil, but the latter two species also after-ripened when stored dry at 5°C.
Seeds of Commelina communis, Echinochloa crus-galli var. praticola and Setaria faberi also showed deep dormancy and proceeded to after-ripen when stored dry at 5°C.
Seeds of Elsholtzia ciliata were moderate dormant, and rapidly germinated after short period of storing at the room temperature.
In Stellaria media, seeds harvested in August to September had no or weak dormancy; and secondary dormancy was induced by burial in the soil and was broken by the alternating temperature next spring. But seeds harvested in November were rather more dormant.
In seeds of Digitaria violascens, the strongest dormancy of ten species was found, and very few seeds germinated after burying in the soil and storing in dry condition at 5°C.
2. High percentages in germination were obtained in seeds of E. crus-galli var. praticola, E. ciliata, P. lapathifolium and S. faberi, which had over-wintered outdoor in the air.
3. Chilling at 0-1°C of seeds of C. album and P. lapathifolium for a month, and P. longisetum for two months, and E. ciliata for four months, and P. nepalese for six months, increased considerably their germination, but seed dormancy of other species was not broken by chilling.View full abstractDownload PDF (866K) -
Part I. Chemical Structures and Herbicidal Activities of HOK-7501 and Its DerivativesTakuo OHI, Tasuku SETO, Jyotaro TAMURA, Shigeru AOKI, Hiroshi OYAMA, S ...1969 Volume 1969 Issue 9 Pages 41-46
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSMany aryloxythio carboxyric acid-derivatives were synthesized their herbicidal activities were examined.
Relative activities among some derivatives of 2-methyl 4-chlorophenoxy thioacetic acid and differences of activites caused by changing the substituents on aromatic ring and alkylene branch were examined.
1. In irrigated water treatment methods most effective derivative were lower alkylesters. Thioamides and thioanilides were moderate effective derivatives. But these derivatives had a little selectivity among the weeds. The activities on slenderspikerush (Eleocharis acicularis L. R. & S.) were less than on those other weeds. Acid itself and salts had lower activities.
2. The tendency of relative activities of via the root and stem tests on slenderspikerush was the same as the tests of irrigated water treatment methods.
3. In via the roots test on rice plants the range of relative injury among each derivatives was smaller than that of relative effects on slenderspikerush.
4. As for the structure of aromatic-ring, 2-methyl 4-chloro type and 2, 4-dichloro type had the highest activities. 2, 4, 5-trichloro type had less activities than those of the formers.
5. As for the alkylene-branch, acetic acid type had the highest activities, and α-propionic acid and butyric acid type had moderate activities.
By the overall conclusion from these tests, we were determined to select HOK-7501 as herbicide for paddy field.View full abstractDownload PDF (696K) -
Part II. Injury of Rice Plant and Herbicidal ActivitiesTakuo OHI, Tasuku SETO, Jyotaro TAMURA, Shigeru AOKI, Haruo IDE, Hiros ...1969 Volume 1969 Issue 9 Pages 46-51
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSInjury on rice plant and herbicidal activities on slenderspikerush (Eleocharis acicularis L. R. & S.) and monochoria (Monochoria vaginalis Presl.) of HOK-7501 in rice plant were examined compared with MCP-ethylester.
In more practical tests, that is, under seepage or variable temperature condition, the injury by HOK-7501 were smaller than that by MCP-ethylester.
Herbicidal activites of HOK-7501 against slenderspikerush and monochoria in pot tests gave equivalent or stronger effects than those of MCP-ethylester.
The lower solubility and volatility of HOK-7501 are supposed to be one of the factors of causing these results.View full abstractDownload PDF (811K) -
Shooji FURUYA, Hideo CHISAKA, Takayoshi KATAOKA, Masao ARAI1969 Volume 1969 Issue 9 Pages 51-56
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSWe clarified the phytotoxicity of several herbicides to rice seedlings (2-3-leaf stage) and weeds in mechanized transplanting rice culture.
As a result of it, CNP, nitrofen, TOPE (3-methylphenyl-4′-nitropheizylether), simetryne and TDW-43·simetryne A (benzyl N, N-diisopropyldithiocarbamate 13%+simetryne 1.3%) were safe to rice seedlings and very effective to weeds. So they are considered to be suitable for the mechanized transplanting culture.View full abstractDownload PDF (832K) -
Kunikazu UEKI, Shooichi MATSUNAKA, Hiroshi NAKAMURA1969 Volume 1969 Issue 9 Pages 57-73
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSDownload PDF (2824K) -
Kinjiro HATTORI, Shcoji FURUYA1969 Volume 1969 Issue 9 Pages 74-86
Published: December 25, 1969
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSDownload PDF (2211K)
- |<
- <
- 1
- >
- >|