All issues
Volume 1974 (1974)
- Issue 18 Pages 1-
- Issue 17 Pages 1-
- Issue Suppl13 Pages 1･･･
Volume 1974, Issue 18
Displaying 1-12 of 12 articles from this issue
- |<
- <
- 1
- >
- >|
-
Takashi TAKENAGA1974 Volume 1974 Issue 18 Pages 1-4
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSDownload PDF (612K) -
II. Absorption and Translocation in Plants and Behaviour in SoilAkihiko MINE, Naganori HINO, Minoru UEDA, Shooichi MATSUNAKA1974 Volume 1974 Issue 18 Pages 5-10
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSThis study was conducted to examine bentazon absorption and translocation in plants and its behaviour in soil. Bioassay methods and 14C-ring labeled bentazon were used in this investigation. The results obtained are summarized below.
1. Bentazon was readily absorbed by roots and leaves of Cyperus serotinus Rottb, Sagittaria pygmaea Miq. and Raphanus sativus L. under water culture and soil culture conditions.
2. Bentazon was absorbed by the roots and rapidly translocated to the leaves in C. serotinus. Both acropetal and basipetal translocation occured when bentazon was applied to the leaf. However, acropetal translocation was greater than basipetal translocation. Translocation in the rhizome was also observed.
3. The downward movement of water under paddy conditions caused severe leaching of bentazon into the soil.
4. The persistence of bentazon in the soil was greater than 30 days under non-leaching conditions.
5. The concentration of bentazon in the leaves of S. pygmaea was about 6 times greater when roots only were immersed in a herbicide solution as compared to the immersion of the entire plant.
Accumulation of bentazon in the roots was approximately the same under both treatment conditions.View full abstractDownload PDF (750K) -
1. Herbicidal Characteristics of NK-049 on WeedsKensaku ITO, Fumio FUTATSUYA, Katsuhiko HIBI, Shuichi ISHIDA, Osamu YA ...1974 Volume 1974 Issue 18 Pages 10-15
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESS3, 3′-Dimethyl-4-methoxybenzophenone (NK-049) is a new type herbicide which was obtained from studies of plant growth regulation activities of anisomycin antibiotic and it's derivatives.
NK-049 has adaptabillities for an upland and paddy field herbicide.
In this report, herbicidal activities in paddy field are described.
NK-049 showed high effectiveness to most of annual weed species by pre-emergence treatment.
NK-049 was absorbed mainly through young shoots of weeds at emergence and induced severe chlorosis which lead to kill weeds.
Mode of action of NK-049 is considered to be different from the prometoryne action which inhibits the photosynthesis.
On all treatment methods experiment with NK-049, at pre-emergence soil surface treatment, soil incorporation and soil surface treatment immediately after emergence under flooded condition showed high effectiveness to weeds.View full abstractDownload PDF (614K) -
2. Responses of Rice Plant to NK-049Kensaku ITO, Fumio FUTATSUYA, Katsuhiko HIBI, Shuichi ISHIDA, Osamu YA ...1974 Volume 1974 Issue 18 Pages 16-20
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSEffects of NK-049 on rice are discribed in this report.
NK-049 showed a high selectivity between rice and barnyardgrass by pre-emergence treatment. Chlorophyll contents in rice plant were lowered for 7 to 10 days after treatment, but were granually recovered up to the normal level and no effect on growth was resulted. In case of barnyardgrass, persistent low level of chlorophyll contents, remarkable growth inhibition, and final death were observed.
The photosynthesis in rice plant was reduced for a few days after treatment with NK-049 under flooded condition, but recovered up to the normal level and no effect on growth was obtained.
There was little injury owing to the absorption of NK-049 through root of rice.
Therefore, NK-049 was very safety to rice in pre-transplanting treatment.View full abstractDownload PDF (515K) -
(2) Effects of the Particle Size and the Application Rate of Carrier on the Herbicidal Effect and the Growth of Dry-seeded RiceYasuaki MORI, Yoshiharu EDO, Hisayoshi TORYU, Teisuke ITO1974 Volume 1974 Issue 18 Pages 21-26
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSDownload PDF (760K) -
An Evaluation Method of Phytotoxic Effect of Agricultural Chemicals applied to SoilSumio NAGASAWA, Shoji ASANO1974 Volume 1974 Issue 18 Pages 26-31
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSThe growth inhibiting effect of PCBA (pentachlorbenzylalcohol) in soil on soy bean seedlings was evaluated by weighing the upper part of seedling from cotyledons. The median growth inhibiting concentration determined by the probit analysis method for quantitative response data was ca. 20.80ppm. At a concentration near the median growth inhibiting concentration, susceptibilities of soy bean seedlings of 8 varieties to PCBA were compared and the data obtained were analysed by Duncan's multiple range test.View full abstractDownload PDF (2523K) -
Kenji CHIKAI, Yoshimasa HAGIMORI1974 Volume 1974 Issue 18 Pages 31-34
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSDownload PDF (502K) -
Factors Influencing the Effect of Soil-incorporated Herbicides on Weeds in Water-submerged ConditionShooji FURUYA, Takayoshi KATAOKA1974 Volume 1974 Issue 18 Pages 34-39
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSThis experiment was carried out to clarify the factors influencing the effect of soil-incorporated herbicide on annual weeds in water-submerged condition. The herbicides examined were CNP, TOPE, Benthiocarb and Oxadiazone [5-t-butyl-3 (2, 4-dichloro-5-isoproxyphenyl) 1, 3, 4-oxadiazole-2-one].
The weeding effect of each herbicide was less when it was incorporated with soil in non- and shallowly-submerged condition and when water was percolated after the herbicide application.
The weeding effect had close relation with the herbicide concentration in the surface water. The concentration of each herbicide in the surface water was higher in the application of emulsion than in that of granule. From this result, it is estimated that emulsion is more adaptable for soil-incorporation treatment of herbicide in water-submerged condition than granule.View full abstractDownload PDF (744K) -
Atsushi YAMAGISHI, Atsushi HASHIZUME1974 Volume 1974 Issue 18 Pages 39-43
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSLowland paddy fields become frequently infested with several kind of green algae soon after the transplanting of rice plants, and occasionally they bring about the unexpected damage to rice plants. This studies were carried out to make clear the ecology of these green algae, especially Hydrodactyon reticulatum and Spirogyra communis, and additionally to establish the method of their control with chemicals. The results obtained are as follows.
(1) Green algae in paddy fields were classified three types viz. unicellular, colonial and filamentous type. Of these, Hydrodactyon reticulatum as colonial type and Ulothrix aequalis as filamentous type were the most injurious to rice plants.
(2) In paddy fields, emergence of Spirogyra communis and Ulothrix aequalis was two or three times a year, and Hydrodactyon reticulatum once or two times.
(3) Nitrogen and phosphoric acid were indispensable to the growth and multiplication of Hydrodactyon reticulatum, especially phosphoric acid to the multiplication.
(4) Water-and soil-temperature went down as the increase of colonies, and as the results emergence of tillers of rice plants was inhibited.
(5) Several herbicides useful as an algicide were found through the screening test.View full abstractDownload PDF (582K) -
Kunji SHIMOTSUBO, Haruhiko NAKAYAMA1974 Volume 1974 Issue 18 Pages 44-48
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSThis experiment was conducted to investigate the control rating of MCP to slender spikerush collected from several regions (Kagoshima, Fukuyama, Zentsuji, Tsu, Kanazawa and Takada) in Japan, from the view point of the difference of the weed ecotype. The following results were shown.
(1) The overwintering organ of slender spikerush was divided into two types. One is the well-developed bud which is formed on the base of discolored long leaves (Kagoshima, Tsu, Kanazawa and Takada, See Fig. 1-1), and the other is poor-developed bud formed on the base of green adult leaves (Fukuyama, See Fig. 1-2).
(2) The growth condition of overwintering buds of slender spikerush from Kagoshima, Fukuyama and Zentsuji in early spring season was more viable than ones from Tsu, Kanazawa and Takada, and such phenomenon was remarkable under the low temperature than high temperature conditions.
(3) The effectiveness of MCP was clearly different among slender spikerushes from different locality, and became larger in the order, Fukuyama, Takada, Kanazawa, Kagoshima. Such phenomenon was also observed even under the different conditions of the growth or temperature after MCP treatment.View full abstractDownload PDF (2134K) -
2. Effects of Air-temperature on the Growing PeriodKatsuyoshi NOGUCHI, Kanenori NAKAYAMA1974 Volume 1974 Issue 18 Pages 48-52
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSEffects of air-temperature on the growing period from seeding to ripening of common purslane (Portulaca oleracea L.), seeded at different dates were studied with an aim to knowing the times of generative alternation in a year.
1. When common purslane was seeded at the period between April and the beginning of August, the accumulated value of the daily mean air-temperature subtracted by 4°C for the days from seeding to the early stage of ripening was 847±22°C and this value gave the minimum CV (the coefficient of variation), 3.26%.
When seeded after the middle of August, the daily mean air-temperature should be subtracted by 3°C before summing up in order to minimize the value of CV, and 709±43°C (CV=5.30%) of the accumulated value was obtained in this way.
2. For the the production of mature seeds, the average of the daily mean air-temperature for the growing period had to be above 18°C or so, regardless of seeding dates.
3. From the above facts, it may be concluded that common purslane could alternate the generation four times in a year and obtain the growth to ripening in the seeding before the middle of September, in Kanto plane.View full abstractDownload PDF (581K) -
Kunikazu UEKI, Hiroshi NAKAMURA, Tadao YAMADA, Kanenori NAKAYAMA, Kats ...1974 Volume 1974 Issue 18 Pages 53-65
Published: September 15, 1974
Released on J-STAGE: December 17, 2009
JOURNAL FREE ACCESSDownload PDF (1863K)
- |<
- <
- 1
- >
- >|