Journal of the Japanese Institute of Landscape Architects

Foundamental Studies on the Rapid Stabilizing Method by Seeding for Cut and Filled Slopes I

Shinzo NITTA, Sumiji KOBASHI

1961 Volume 24 Issue 3 Pages 47-51
Published: March 31, 1961
Released on J-STAGE: July 19, 2011

DOIhttps://doi.org/10.5632/jila1934.24.47

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1. Obtaining satisfactory results on the Rapid Stabilizing method by seeding for cut and filled Slopes, we make tests on the germination of grasses and the relation between water and the germination.
2. There are four types on the germinative energy of grasses. The type of Ryegrass and Weeping Love grass is the best for hte R. S. method.
3. The grasses of small seeds finish their germinations more rapidly than of large seeds. But using the grasses of large seeds, we will obtain satisfactory result.
4. The water absorption curves of grass seeds differ according to the kind of grasses, the temperature and the moisture content.
The moisture content has less effect on the germination curve than the water absorption curve.
5. Damage from drought on germination of Ryegress will very frequently happen on two or three days after seeding.
6. It is a urgent problem how to keep the moisture of soil in the germination period.

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Betrachtungen über die Verbesserung des Schulgartens (1)

Masayoshi NISHIDA

1961 Volume 24 Issue 3 Pages 52-55
Published: March 31, 1961
Released on J-STAGE: July 19, 2011

DOIhttps://doi.org/10.5632/jila1934.24.52

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Foundamental studies on the culture of American and European lawn grasses.(3)

On the treading-pressure effects and the mowing effects on the growth of American and European lawn grasses

Fumio KITAMURA, Tomoo OZAWA

1961 Volume 24 Issue 3 Pages 56-60
Published: March 31, 1961
Released on J-STAGE: July 19, 2011

DOIhttps://doi.org/10.5632/jila1934.24.56

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Experiments were carried out to know the treadingpressure effects and the mowing effects on the growth of American and European lawn grasses (Kentucky bluegrass, colonial bentgrasses-Highland bent and Astoriabent, redtop, Bermudagrass, Chewings fescue and Italian ryegrass) in Japan, and the following results obtained.
(1) By the tread, the height of them became low, and by the moderate tread, their weight (fresh and dry measure), the amount of stems, stolons and roots increased, but by the over tread, all decreased, while the length of roots was not influenced. As a rule, Highland bent, Astoria bent and Bermudagrass were comparatively strong to the tread, while Kentucky bluegrass and Italian ryegrass were comparatively weak.
(2) By the mowing, their weight (fresh and dry measure), the height of them, the amount of stems and stolons and the length of roots decreased, and by the moderate mowing, the amount of stems, stolons and roots of some kinds increased, but by the over mowing, all decreased. As a rule, Bermudagrass was comparatvely strong to the mowing, while Kentucky bluegrass and Italian ryegrass were comparatively weak.

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Studies on trees' form.(1-1)

Haruo OYAMA

1961 Volume 24 Issue 3 Pages 61-65
Published: March 31, 1961
Released on J-STAGE: July 19, 2011

DOIhttps://doi.org/10.5632/jila1934.24.61

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Studies on the value of Cytisus scoparius in flower garden's maferial

Sinji NINOMIYA

1961 Volume 24 Issue 3 Pages 66-68
Published: March 31, 1961
Released on J-STAGE: July 19, 2011

DOIhttps://doi.org/10.5632/jila1934.24.66

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[title in Japanese]

[in Japanese]

1961 Volume 24 Issue 3 Pages 70-72
Published: March 31, 1961
Released on J-STAGE: July 19, 2011

DOIhttps://doi.org/10.5632/jila1934.24.70

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