Studies on weed vegetation in non-cultivated paddy fields III. effects of different soil moisture levels on growth during early stage of some summer grasses

Tomoshiro Takeda, Susumu Hakoyama, Waichi Agata, Shigeki Furuya

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

For a reasonable understanding of the difference of weed ecological distribution caused by soil moisture conditions in non-cultivated paddy fields, a growth analysis experiment was carried out on several Gramineous summer species under three different soil moisture levels. Soil moisture treatments were started at the early growth stage of plants with five to seven leaves, by means of keeping the soil submerged under water, wet, and dry conditions. The wet and dry conditions of the soil were controlled by means of constant capillary tention method. Results obtained are as follows: 1. It was found that each of the species in this experiment exhibited a tendency to flourish better in an optimum soil moisture, required for their growth. They were grouped under three categories according to their growth response to the different soil moisture conditions. Some species showed the tendency of declining relative growth rate (RGR) as the soil moisture decreased (type-I), whereas some other species showed the highest RGR under wet conditions (type-II) and the remaining species scarcely reduced the RGR even under drought conditions (type-III) (Fig.3). 2. Change in the two growth parameters, the net assimilation rate (NAR) and the leaf-area ratio (LAR), depending on soil moisture conditions were different for each of the three types. LAR of the species in type-III and NAR of the species in type-II were more affected by soil moisture conditions in these two types, whereas type-I species were little affected by soil moisture conditions in both the parameters (Fig. 4). 3. Comparing the growth response to soil moisture of C3 with C4 plants, the results showed that C4 species had a tendcncy of higher RGR and LAR under relatively dry conditions, while C3 species grew better under relatively wet conditions. 4. Results showed that the ecological distribution of the weeds in non-cultivated paddy fields, as for their growth response was concerned, seemed to be attributed to the soil moisture.

元の言語英語
ページ(範囲)432-438
ページ数7
ジャーナルJapanese Journal of Crop Science
49
発行部数3
DOI
出版物ステータス出版済み - 1 1 1980

Fingerprint

Poaceae
paddies
Soil
weeds
soil water
grasses
vegetation
summer
Growth
leaf area
net assimilation rate
C4 plants
C3 plants
Droughts
soil quality
drought
developmental stages

All Science Journal Classification (ASJC) codes

  • Food Science
  • Agronomy and Crop Science
  • Genetics

これを引用

Studies on weed vegetation in non-cultivated paddy fields III. effects of different soil moisture levels on growth during early stage of some summer grasses. / Takeda, Tomoshiro; Hakoyama, Susumu; Agata, Waichi; Furuya, Shigeki.

:: Japanese Journal of Crop Science, 巻 49, 番号 3, 01.01.1980, p. 432-438.

研究成果: ジャーナルへの寄稿記事

@article{142d7cb8443446ea93cfeeda933b4cc5,
title = "Studies on weed vegetation in non-cultivated paddy fields III. effects of different soil moisture levels on growth during early stage of some summer grasses",
abstract = "For a reasonable understanding of the difference of weed ecological distribution caused by soil moisture conditions in non-cultivated paddy fields, a growth analysis experiment was carried out on several Gramineous summer species under three different soil moisture levels. Soil moisture treatments were started at the early growth stage of plants with five to seven leaves, by means of keeping the soil submerged under water, wet, and dry conditions. The wet and dry conditions of the soil were controlled by means of constant capillary tention method. Results obtained are as follows: 1. It was found that each of the species in this experiment exhibited a tendency to flourish better in an optimum soil moisture, required for their growth. They were grouped under three categories according to their growth response to the different soil moisture conditions. Some species showed the tendency of declining relative growth rate (RGR) as the soil moisture decreased (type-I), whereas some other species showed the highest RGR under wet conditions (type-II) and the remaining species scarcely reduced the RGR even under drought conditions (type-III) (Fig.3). 2. Change in the two growth parameters, the net assimilation rate (NAR) and the leaf-area ratio (LAR), depending on soil moisture conditions were different for each of the three types. LAR of the species in type-III and NAR of the species in type-II were more affected by soil moisture conditions in these two types, whereas type-I species were little affected by soil moisture conditions in both the parameters (Fig. 4). 3. Comparing the growth response to soil moisture of C3 with C4 plants, the results showed that C4 species had a tendcncy of higher RGR and LAR under relatively dry conditions, while C3 species grew better under relatively wet conditions. 4. Results showed that the ecological distribution of the weeds in non-cultivated paddy fields, as for their growth response was concerned, seemed to be attributed to the soil moisture.",
author = "Tomoshiro Takeda and Susumu Hakoyama and Waichi Agata and Shigeki Furuya",
year = "1980",
month = "1",
day = "1",
doi = "10.1626/jcs.49.432",
language = "English",
volume = "49",
pages = "432--438",
journal = "Japanese Journal of Crop Science",
issn = "1349-0990",
publisher = "日本作物学会",
number = "3",

}

TY - JOUR

T1 - Studies on weed vegetation in non-cultivated paddy fields III. effects of different soil moisture levels on growth during early stage of some summer grasses

AU - Takeda, Tomoshiro

AU - Hakoyama, Susumu

AU - Agata, Waichi

AU - Furuya, Shigeki

PY - 1980/1/1

Y1 - 1980/1/1

N2 - For a reasonable understanding of the difference of weed ecological distribution caused by soil moisture conditions in non-cultivated paddy fields, a growth analysis experiment was carried out on several Gramineous summer species under three different soil moisture levels. Soil moisture treatments were started at the early growth stage of plants with five to seven leaves, by means of keeping the soil submerged under water, wet, and dry conditions. The wet and dry conditions of the soil were controlled by means of constant capillary tention method. Results obtained are as follows: 1. It was found that each of the species in this experiment exhibited a tendency to flourish better in an optimum soil moisture, required for their growth. They were grouped under three categories according to their growth response to the different soil moisture conditions. Some species showed the tendency of declining relative growth rate (RGR) as the soil moisture decreased (type-I), whereas some other species showed the highest RGR under wet conditions (type-II) and the remaining species scarcely reduced the RGR even under drought conditions (type-III) (Fig.3). 2. Change in the two growth parameters, the net assimilation rate (NAR) and the leaf-area ratio (LAR), depending on soil moisture conditions were different for each of the three types. LAR of the species in type-III and NAR of the species in type-II were more affected by soil moisture conditions in these two types, whereas type-I species were little affected by soil moisture conditions in both the parameters (Fig. 4). 3. Comparing the growth response to soil moisture of C3 with C4 plants, the results showed that C4 species had a tendcncy of higher RGR and LAR under relatively dry conditions, while C3 species grew better under relatively wet conditions. 4. Results showed that the ecological distribution of the weeds in non-cultivated paddy fields, as for their growth response was concerned, seemed to be attributed to the soil moisture.

AB - For a reasonable understanding of the difference of weed ecological distribution caused by soil moisture conditions in non-cultivated paddy fields, a growth analysis experiment was carried out on several Gramineous summer species under three different soil moisture levels. Soil moisture treatments were started at the early growth stage of plants with five to seven leaves, by means of keeping the soil submerged under water, wet, and dry conditions. The wet and dry conditions of the soil were controlled by means of constant capillary tention method. Results obtained are as follows: 1. It was found that each of the species in this experiment exhibited a tendency to flourish better in an optimum soil moisture, required for their growth. They were grouped under three categories according to their growth response to the different soil moisture conditions. Some species showed the tendency of declining relative growth rate (RGR) as the soil moisture decreased (type-I), whereas some other species showed the highest RGR under wet conditions (type-II) and the remaining species scarcely reduced the RGR even under drought conditions (type-III) (Fig.3). 2. Change in the two growth parameters, the net assimilation rate (NAR) and the leaf-area ratio (LAR), depending on soil moisture conditions were different for each of the three types. LAR of the species in type-III and NAR of the species in type-II were more affected by soil moisture conditions in these two types, whereas type-I species were little affected by soil moisture conditions in both the parameters (Fig. 4). 3. Comparing the growth response to soil moisture of C3 with C4 plants, the results showed that C4 species had a tendcncy of higher RGR and LAR under relatively dry conditions, while C3 species grew better under relatively wet conditions. 4. Results showed that the ecological distribution of the weeds in non-cultivated paddy fields, as for their growth response was concerned, seemed to be attributed to the soil moisture.

UR - http://www.scopus.com/inward/record.url?scp=84996001345&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84996001345&partnerID=8YFLogxK

U2 - 10.1626/jcs.49.432

DO - 10.1626/jcs.49.432

M3 - Article

AN - SCOPUS:84996001345

VL - 49

SP - 432

EP - 438

JO - Japanese Journal of Crop Science

JF - Japanese Journal of Crop Science

SN - 1349-0990

IS - 3

ER -