I. Watanabe

发表

Involvement of nematodes in the soil sickness of a dryland rice-based cropping system

W. Ventura, I. Watanabe, M. B. Castillo, 1981 .

Methane formation and emission from flooded rice soil incorporated with 13C-labeled rice straw

A. Chidthaisong, I. Watanabe, 1997 .

The utilization of the Azolla - Anabaena complex as a nitrogen fertilizer for rice

I. Watanabe, C. Espinas, N. S. Berja, 1977 .

Azolla—Anabaena symbiosis — its physiology and use in tropical agriculture

I. Watanabe, 1982 .

The Anabaena-Azolla symbiosis: Diversity and relatedness of neotropical host taxa

T. Lumpkin, W. Zimmerman, I. Watanabe, 1991 .

Aspects of the genetic and botanical status of Neotropical Azolla species

T. Lumpkin, W. Zimmerman, I. Watanabe, 1991 .

Green manure production of Azolla microphylla and Sesbania rostrata and their long-term effects on rice yields and soil fertility

W. Ventura, I. Watanabe, 1993, Biology and Fertility of Soils.

Technologies for utilizing biological nitrogen fixation in wetland rice: potentialities, current usage, and limiting factors

P. Roger, I. Watanabe, 1986 .

Nitrogen Fixation by Pseudomonas saccharophila Doudoroff ATCC 15946

R. Knowles, W. Barraquio, I. Watanabe, 1986 .

Ammonia and nitrous oxide losses following applications of ammonium sulfate to flooded rice

J. Freney, E. Craswell, O. T. Denmead, 1981 .

Sexual hybridization among Azolla species

I. Watanabe, D. Cat, W. Zimmerman, 1989 .

RE-ESTABLISHMENT OF SYMBIOSIS TO Anabaena-FREE Azolla

I. Watanabe, Lin Cang, Liu Zhong-zhu, 1989 .

Sexual Hybrids of Azolla filiculoides with A. microphylla

I. Watanabe, T. Ventura, B. Padre, 1993 .

Nitrogen-Fixing (Acetylene Redution) Activity and Population of Aerobic Heterotrophic Nitrogen-Fixing Bacteria Associated with Wetland Rice

W. Barraquio, I. Watanabe, M. R. De Guzman, 1979, Applied and environmental microbiology.

Nodule Bacteroids and Anabaena: Natural 15N Enrichment in the Legume-Rhizobium and Azolla-Anabaena Symbiotic Systems

J. Ladha, T. Yoneyama, I. Watanabe, 1987 .

Microbial Ecology of Flooded Rice Soils

I. Watanabe, C. Furusaka, 1980 .

Azolla as a component of the space diet during habitation on Mars

M. Yamashita, I. Watanabe, H. Wada, 2008 .

ELECTRON TRANSPORT SYSTEMS OF RHIZOBIUM GROWN IN NODULES AND IN LABORATORY MEDIUM

I. Watanabe, K. Tuzimura, 1964 .

Algae and aquatic weeds as source of organic matter and plant nutrients for wetland rice

P. Roger, I. Watanabe, 1984 .

3. Technologies for utilizing biological nitrogen fixation in wetland rice: Potentialities, current usage, and limiting factors

I. Watanabe, P. Roger, 1986, Fertilizer research.

Estimating N2 fixation by Sesbania rostrata and S. cannabina (syn. S. aculeata) in lowland rice soil by the 15N dilution method

J. Ladha, I. Watanabe, R. P. Pareek, 1990, Biology and Fertility of Soils.

Seeding vs. vegetative propagations of the stem-nodulating green manure Sesbania rostrata

J. Ladha, M. Becker, J. Ottow, 1988, Biology and Fertility of Soils.

Nitrogen accumulation and changes in natural 15N abundance in the tissues of legumes with emphasis on N2 fixation by stem-nodulating plants in upland and paddy fields

J. Ladha, T. Yoneyama, I. Watanabe, 1991 .

Survival of Azorhizobium caulinodans in the Soil and Rhizosphere of Wetland Rice under Sesbania rostrata-Rice Rotation

J. Ladha, A. Padre, I. Watanabe, 1989, Applied and environmental microbiology.

Ecology of flooded rice fields

P. Roger, I. Watanabe, 1985 .

Improvement of phosphate fertilizer application to Azolla

W. Ventura, I. Watanabe, M. Lapis, 1988 .

Pentachlorophenol-decomposing and PCP-tolerant bacteria in field soil treated with PCP

I. Watanabe, 1977 .

ISOLATION OF PENTACHLOROPHENOL DECOMPOSING BACTERIA FROM SOIL

I. Watanabe, 1973 .

Methane formation and substrate utilisation in anaerobic rice soils as affected by fertilisation

A. Chidthaisong, I. Watanabe, H. Obata, 1998 .

Methanogenic Characteristics of Flooded Rice Soils in Response to Glucose Amendment

A. Chidthaisong, K. Inubushi, I. Watanabe, 1996 .

A plant sampling procedure for acetylene reduction assay to detect rice varietal differences in ability to stimulate N2 fixation

J. Ladha, A. Tirol-Padre, I. Watanabe, 1988 .

Evaluation of methane oxidation in rice plant-soil system

R. Wassmann, K. Inubushi, I. Watanabe, 2002, Nutrient Cycling in Agroecosystems.

Changes in concentration andδ13C values of soil-trapped CH4 and C02 in flooded rice soil

A. Chidthaisong, I. Watanabe, 1997, Biology and Fertility of Soils.

Nitrogen mineralization in tropical wetland rice soils : I. Relationship with temperature and soil properties

I. Watanabe, J. Tallada, I. J. Manguiat, 1996 .

Production Potential and Emission of Methane in Flooded Rice Soil Microcosms after Continuous Application of Straws

A. Chidthaisong, K. Inubushi, I. Watanabe, 1996 .

Low levels of fixed nitrogen required for isolation of free-living N2-fixing organisms from rice roots

W. Barraquio, I. Watanabe, WILFREDO L. BARRAQUIO, 1979, Nature.

Difference in Natural Abundance of 15N in Several Rice (Oryza sativa L.) Varieties: Application for Evaluating N2 Fixation

J. Ladha, T. Yoneyama, I. Watanabe, 1987 .

Fixation of Dinitrogen-15 Associated with Rice Plants

I. Watanabe, O. Ito, D. Cabrera, 1980, Applied and environmental microbiology.

A new nitrogen-fixing species of pseudomonad: Pseudomonas diazotrophicus sp. nov. isolated from the root of wetland rice

J. Ladha, I. Watanabe, R. So, 1987 .

Seasonal change of N2 fixing rate in rice field assayed by In Situ acetylene reduction technique

I. Watanabe, Kuk-Ki Lee, M. R. Guzman, 1978 .

Nitrogen fixation by non-legumes in tropical agriculture with special reference to wetland rice

I. Watanabe, 1986, Plant and Soil.

Quantitative estimation of decomposition process of plant debris in paddy field. II. Amounts and C/N ratios of plant debris in tropical paddy soils.

M. Kimura, I. Watanabe, Y. Takai, 1990 .

Supplemental Nitrogen Fertilizer to Soybeans : III. Effects on nitrogen fixation

H. Nakano, I. Watanabe, Kosei Tabuchi, 1989 .

Supplemental nitrogen fertilizer to soybeans. I. Effect of side-dressing at early ripening stage on yield, yield components and protein content of seeds

H. Nakano, I. Watanabe, Kohsei Tabuchi, 1983 .

ANTIGENIC ANALYSIS OF ANABAENA AZOLLAE AND THE ROLE OF LECTIN IN THE AZOLLA–ANABAENA SYMBIOSIS

J. Ladha, I. Watanabe, 1984 .

Quantitative study on nitrification in flooded rice soil

I. Watanabe, B. Padre, S. Santiago, 1981 .

The abundance of heterocystous blue-green algae in rice soils and inocula used for application in rice fields

P. Roger, P. Reddy, I. Watanabe, 1987, Biology and Fertility of Soils.

Chemical composition of cultures and natural samples of N2-fixing blue-green algae from rice fields

P. Roger, I. Watanabe, A. Tirol, 1986, Biology and Fertility of Soils.

Collection of Azolla microphylla in Paraguay and its Characterization by Allozymes and DNA-RAPDs

C. Simon, W. Zimmerman, I. Watanabe, 1994 .

Biofertilizer germplasm collections at IRRI.

P. Roger, J. Ladha, I. Watanabe, 1992 .

The effect of pesticides on the denitrificatitn in paddy soil

I. Watanabe, M. Honma, S. Mitsui, 1964 .

Growth inhibition due to continuous cropping of dryland rice and other crops

W. Ventura, I. Watanabe, 1978 .

Population of Aerobic Heterotrophic Nitrogen-Fixing Bacteria Associated with Wetland and Dryland Rice

W. Barraquio, I. Watanabe, M. R. De Guzman, 1982, Applied and environmental microbiology.

Isolation and identification of nitrogen fixing Enterobacter cloacae and Klebsiella planticola associated with rice plants

J. Ladha, W. Barraquio, I. Watanabe, 1983 .

Effect of an Azolla Cover on the Conditions in Floodwater

I. Watanabe, J. Alkämper, T. Kröck, 1988 .

Field Trial of Cowpeas (Vigna unguiculata (L.) WALP.), Differing in Drought Tolerance, in the Dry Season of Sudan Savanna and Dry Matter Production of Potted Plants under Water-stress

I. Watanabe, T. Terao, 1997 .

An ultrastructural study of postmeiotic development in the megasporocarp of Azolla microphylla

I. Watanabe, E. G. Cutter, Y. R. Herd, 1986 .

Iron Toxicity of Rice as A Multiple Nutritional Soil Stress

J. Ottow, I. Watanabe, G. Benckiser, 1981 .

Long-term effects of urea and green manure on rice yields and nitrogen balance

J. Ladha, D. Dawe, W. Ventura, 2000 .

Limited Multiplication of Symbiotic Cyanobacteria of Azolla spp. on Artificial Media

I. Watanabe, C. C. Liu, L. Tang, 1990, Applied and environmental microbiology.

Difference in survival of uptake hydrogenase positive and negative strains of Bradyrhizobium japonicum in flooded and non-flooded soil

S. Maskey, I. Watanabe, 1992 .

Further study on iodine toxicity in relation to “Reclamation Akagare” disease of lowland rice

I. Watanabe, K. Tensho, 1970 .

Differential Responses of Azolla to Phosphorus Defficiency:II. Screening Method under Concentration Controlled Conditions

I. Watanabe, D. Kushari, 1992 .

Differential Responses of Azolla to Phosphorus Deficiency : I. Screening Methods in Quantity Controlled-Condition

I. Watanabe, D. Kushari, 1991 .

The effect of nitrogen fertilizer on N2 fixation in the paddy field measured byin situ acetylene reduction assay

I. Watanabe, M. R. Guzman, D. Cabrera, 1981, Plant and Soil.

EFfect of phosphorus on N2-fixation as measured by the field acetylene reduction technique in Thailand long-term fertility plots

I. Watanabe, W. Cholitkul, P. Sangtong, 1980 .

Field studies on nitrogen fixation in paddy soils.

I. Watanabe, W. Cholitkul, 1979 .

Ecosystem Manipulation for Increasing Biological N2 Fixation by Blue-Green Algae (Cyanobacteria) in Lowland Rice Fields

P. Roger, I. Watanabe, I. Grant, 1986 .

The degradation of carbofuran in paddy water and flooded soil of untreated and retreated rice fields

J. Seiber, I. Watanabe, E. Heinrichs, 1978 .

Effect of fertilization on exudation, dehydrogenase activity, iron-reducing populations and Fe++ formation in the rhizosphere of rice (Oryza sativa L.) in relation to iron toxicity

H. Neue, Gero Benckiser, J. Ottow, 1984, Plant and Soil.

Genetic diversity and phylogeny analysis of Azolla based on DNA amplification by arbitrary primers.

I. Watanabe, G. Sécond, C. Van Hove, 1993, Genome.

Accumulation of ammonium-N and amino-N in theAzolla-Anabaena association

I. Watanabe, H. F. Tung, 1983, Plant and Soil.

The growth of four species of Azolla as affected by temperature

I. Watanabe, N. S. Berja, 1983 .

Dynamics of Available Nitrogen in Paddy Soils: II. Mineralized N of Chloroform-Fumigated Soil as a Nutrient Source for Rice

K. Inubushi, I. Watanabe, 1986 .

Different growth and survival of Rhizobium species in the rhizosphere of various plants in different sorts of soil: Ecological studies on root nodule bacteria in soil (Part 4)

I. Watanabe, K. Tuzimura, Shi Jia-fu, 1966 .

The effect of rhizosphere of various plants on the growth of Rhizobium

I. Watanabe, K. Tuzimura, 1962 .

The growth of Rhizobium in the Rhizosphere of the host plant

I. Watanabe, K. Tuzimura, 1962 .

ESTIMATION OF NUMBER OF ROOT-NODULE BACTERIA BY A NODULATION-DILUTION FREQUENCY METHOD : ECOLOGICAL STUDIES OF RHIZOBIUM IN SOILS (PART 1)

I. Watanabe, K. Tuzimura, 1961 .

J. Ladha, I. Watanabe, 1982, Biochemical and biophysical research communications.

FATE OF NITROGEN FROM A BLUE-GREEN ALGA IN A FLOODED RICE SOIL

P. Roger, I. Watanabe, A. Tirol, 1982 .

Genetic diversity and phylogeny analysis of Anabaena azollae based on RFLPs detected in Azolla-Anabaena azollae DNA complexes using nif gene probes

N. Huang, I. Watanabe, C. Hove, 1995, Theoretical and Applied Genetics.

Effect of surface application of straw on phototropic nitrogen fixation

P. Roger, I. Watanabe, I. Grant, 1982 .

Biological nitrogen fixation by epiphytic microorganisms in rice fields.

P. Roger, W. Barraquio, I. Watanabe, 1980 .

Effects of N-fertilizers, straw, and dry fallow on the nitrogen balance of a flooded soil planted with rice

I. Watanabe, M. Bravo, A. App, 1986, Plant and Soil.

The fate of markerAzospirillum lipoferum inoculated into rice and its effect on growth, yield and N2 fixation of plants studied by acetylene reduction,15N2 feeding and15N dilution techniques

J. Ladha, I. Watanabe, D. N. Nayak, 1986, Biology and Fertility of Soils.

Effect of grazer regulation and algal inoculation on photodependent nitrogen fixation in a wetland rice field

P. Roger, I. Watanabe, I. Grant, 1985, Biology and Fertility of Soils.

The contribution of atmospheric N2 to Azolla spp. grown on flooded soils

T. Yoneyama, W. Ventura, I. Watanabe, 1991 .

A new method for obtaining Anabaena-free Azolla.

I. Watanabe, Chang Lin, 1988, The New phytologist.

Nitrogen-Fixing (C2H2-Reducing) Activity and Plant Growth Characters of 16 Wetland Rice Varieties

J. Ladha, A. Tirol-Padre, I. Watanabe, 1987 .

Azolla and Sesbania as biofertilizers for lowland rice.

W. Ventura, I. Watanabe, G. Mascarina, 1987 .

The photosynthetic aquatic biomass in wetland rice fields and its effect on nitrogen dynamics.

P. Roger, P. Reddy, I. Watanabe, 1987 .

Response of Azolla to P, K, and Zn in Different Wetland Rice Soils in Relation to Chemistry of Floodwater

Sikander Ali, I. Watanabe, 1986 .

Economic evaluation of azolla use in rice production

L. D. Haws, M. Kikuchi, I. Watanabe, 1984 .

The fate of marker Azospirillum lipoferum inoculated into rice and its effect on growth , yield and N 2 fixation of plants studied by acetylene reduction , lSN 2 feeding and lSN dilution techniques

J. Ladha, I. Watanabe, D. N. Nayak, 2022 .

Relationship between soil phosphorus availability and azolla growth

I. Watanabe, C. Ramirez, 1984 .

Contribution of basal portion of shoot to N2 fixation associated with wetland rice

W. Barraquio, I. Watanabe, D. Cabrera, 1981, Plant and Soil.

RESEARCH ON ALGAE, BLUE-GREEN ALGAE, AND PHOTOTROPHIC NITROGEN FIXATION AT THE INTERNATIONAL RICE RESEARCH INSTITUTE (1963-81), SUMMARIZATION, PROBLEMS , AND PROSPECTS1

P. Roger, I. Watanabe, 1982 .

Improving nitrogen-fixing systems and integrating them into sustainable rice farming

I. Watanabe, I. Watanabe, C. C. Liu, 1992, Plant and Soil.

Seeking for Low Input Sustainable Agriculture in Tropical Rice Production

I. Watanabe, 1993 .

Physiology and agronomy of Azolla-Anabaena symbiosis

I. Watanabe, C. Lin, C. C. Liu, 1989 .

15N Dilution technique of assessing the contribution of nitrogen fixation to rice plant

W. Ventura, I. Watanabe, 1983 .

Sulfate-reducing bacteria and nitrogen fixation in flooded rice soil

I. Watanabe, K. J. Durbin, 1980 .

Dry season soil conditions and soil nitrogen availability to wet season wetland rice

W. Ventura, I. Watanabe, 1978 .

Mineralization of azolla n and its availability to wetland rice: I. Nitrogen Mineralization of Different Azolla Species as Affected by Their Chemical Composition

I. Watanabe, B. Padre, C. Ramirez, 1991 .

Laboratory acetylene reduction assay for relative measurement of N2-fixing activities associated with field-grown wetland rice plants

J. Ladha, W. Barraquio, I. Watanabe, 1986, Plant and Soil.

Estimation of the nitrogen balance for irrigated rice and the contribution of phototrophic nitrogen fixation

S. Datta, P. Roger, W. Ventura, 1984 .

Biological Nitrogen Fixation Associated with Wetland Rice

I. Watanabe, 1981 .

Nitrogen Fixation Associated with the Rice Plant Grown in Water Culture

I. Watanabe, D. Cabrera, 1979, Applied and environmental microbiology.

Seasonal change of N2-fixing rate in rice field assayed byIn Situacetylene reduction technique:I. Experiments in long-term fertility plots

I. Watanabe, B. Alimagno, Kuk-Ki Lee, 1978 .

6 – Nitrogen Fixation in Flooded Rice Soils and Aquatic and Sediment Systems

E. Wada, I. Watanabe, 1993 .

Growth of Azolla in paddy field as affected by phosphorus fertilizer

I. Watanabe, N. S. Berja, Diana C. Del Rosario, 1980 .

Phosphorus and nitrogen contents of azolla grown in the Philippines

I. Watanabe, C. Ramirez, 1990 .

Responses to high temperature of the Azolla-Anabaena association, determined in both the fern and in the cyanobacterium.

I. Watanabe, Chang Lin, T. Santiago-Ventura, 1989, The New phytologist.

Differential phosphorus requirements of Azolla species and strains in phosphorus-limited continuous culture

I. Watanabe, B. P. R. Subudhi, 1981 .

Isozyme differentiation of Azolla Lam

T. Lumpkin, W. Zimmerman, I. Watanabe, 1989, Euphytica.

Stimulating effect of hydrogen on N2 fixation in association with field-grown wetland rice

I. Watanabe, T. Gowda, 1985 .

Response of wetland rice to inoculation with azospirillum lipoferum and pseudomonas Sp.

I. Watanabe, Chang Lin, 1984 .

Immunological techniques to identify Azospirillum associated with wetland rice.

J. Ladha, W. Barraquio, I. Watanabe, 1982, Canadian journal of microbiology.

15N dilution technique of assessing nitrogen fixation in association with rice.

W. Ventura, I. Watanabe, 1982 .

The effects on N2 fixation (C2H2 reduction), bacterial population and rice plant growth of two modes of straw application to a wetland rice field

J. Ladha, A. Tirol-Padre, I. Watanabe, 1987, Biology and Fertility of Soils.

Effect of inorganic N and organic fertilizers on nitrogen-fixing (acetylene-reducing) activity associated with wetland rice plants

J. Ladha, A. Tirol-Padre, I. Watanabe, 1989 .

Plant-Associated N2 Fixation (C2H2-Reduction) by Five Rice Varieties, and Relationship with Plant Growth Characters as Affected by Straw Incorporation

J. Ladha, W. Ventura, I. Watanabe, 1986 .

Effect of Rice Straw Application on the Activity of Algae in Rice Field

I. Watanabe, H. Barthakur, T. Aziz, 1983 .

Effect of Azolla Application and Plant Spacing on Rice Yield

I. Watanabe, J. Alkämper, T. Kröck, 1988 .

Immobilization, mineralization and availability to rice plants of nitrogen derived from heterotrophic nitrogen fixation in flooded soil

I. Watanabe, O. Ito, 1981 .

THE RELATIONSHIP BETWEEN COMBINED NITROGEN UPTAKES AND NITROGEN FIXATION IN AZOLLA‐ANABAENA SYMBIOSIS

I. Watanabe, O. Ito, 1983 .

Epiphytic nitrogen fixation on deepwater rice

P. Roger, W. Barraquio, I. Watanabe, 1981 .

Effect of the Insecticide Carbofuran on Microbial Activities in Flooded Soil

I. Watanabe, A. Tirol, S. Santiago, 1981 .

Organic matter production in rice field flood water

I. Watanabe, M. Saito, 1978 .

Regulation of Invertebrate Grazers as a Means to Enhance Biomass and Nitrogen Fixation of Cyanophyceae in Wetland Rice Fields

I. Watanabe, I. Grant, A. Tirol, 1983 .

Use of symbiotic and free-living blue-green algae in rice culture

I. Watanabe, 1984 .

DIFFERENTIAL RESPONSE OF AZOLLA‐ANABAENA ASSOCIATIONS TO HIGH TEMPERATURE AND MINUS PHOSPHORUS TREATMENTS

I. Watanabe, H. F. Tung, 1983 .

Improvement of nitrogen-fixing systems and their integration into sustainable rice farming.

I. Watanabe, C. C. Liu, 1990 .

DYNAMICS OF AVAILABLE NITROGEN IN PADDY SOILS : I. Changes in Available N during Rice Cultivation and Origin of N

I. Watanabe, Kazuyuki Inubushl, 1986 .

Fate of Azolla spp. and urea nitrogen applied to wetland rice (Oryza sativa L.)

W. Ventura, I. Watanabe, D. Eskew, 1989, Biology and Fertility of Soils.

Mineralization of Azolla N and its availability to wetland rice: II. Fertilizer effect and15N uptake by rice from different species of azolla with varying N contents

W. Ventura, I. Watanabe, Grace B. Mascarinia, 1992 .

Availability to Rice Plants of Nitrogen Fixed by Azolla

I. Watanabe, O. Ito, 1985 .

Dynamics of nitrogen availability in lowland rice soils: the role of soil below plow layer and effect of moisture regimes.

W. Ventura, I. Watanabe, 1984 .

Growth of azolla with rice and its effect on rice yield

I. Watanabe, O. Ito, C. Espinas, 1981 .

Composition ofAzospirillum species associated with wetland rice plant grown in different soils

J. Ladha, I. Watanabe, R. So, 1987, Plant and Soil.

Recent studies on free-living blue-green algae and azolla at the International Rice Research Institute

P. Roger, I. Watanabe, 1986 .

Gas transport through rice

I. Watanabe, Kuk-Ki Lee, A. App, 1981 .

Occurrence of aerobic nitrogen fixing bacteria in wetland and dryland plants

W. Barraquio, I. Watanabe, 1981 .

Effect of nitrate on acetylene disappearance from anaerobic soil

I. Watanabe, M. R. Guzman, 1980 .

Nitrogen fixation associated with deepwater rice

W. Ventura, I. Watanabe, 1982 .

Estimation of N2 fixation in soybean and cowpea by using soil residual 15N

Tomio Yoshida, I. Watanabe, C. Chiu, 1990 .

Nitrogen Fixation in Acid Sulfate Paddy Soils

I. Watanabe, W. Cholitkul, 1981 .

Azolla and its Use in Lowland Rice Culture

I. Watanabe, 1978 .

Epiphytic Occurrence of Azorhizobium caulinodans and Other Rhizobia on Host and Nonhost Legumes

J. Ladha, I. Watanabe, A. Adebayo, 1989, Applied and Environmental Microbiology.

The Growth of Introduced Azolla in Japan

I. Watanabe, K. Kawashima, Shiho Sugh, 1996 .

The Azolla-Anabaena complex and its use in rice culture

I. Watanabe, N. S. Berja, K. Bai, 1981 .

Isolation and identification of N2-fixing Pseudomonas associated with wetland rice.

J. Ladha, W. Barraquio, I. Watanabe, 1983, Canadian journal of microbiology.

Study on the association between Anabaena azollae and Azolla microphylla during the germination of megasporocarps

I. Watanabe, Chang Lin, 1988 .

Variation in the incidence of H2-oxidizing chemolithotrophic bacteria in rice grown under different cultivation conditions

I. Watanabe, T. Gowda, 1985, Plant and Soil.

TheAnabaena-Azolla symbiosis: Diversity and relatedness of neotropical host taxa

T. Lumpkin, W. Zimmerman, I. Watanabe, 2004, Plant and Soil.

Temperature regime of Azolla under rice

I. Watanabe, J. Alkämper, T. Kröck, 1988 .

Microbial biomass nitrogen in anaerobic soil as affected by N-immobilization and N2-fixation

K. Inubushi, I. Watanabe, 1987 .

Nitrogen mineralization in tropical wetland rice soils

I. Watanabe, I. J. Manguiat, G. Mascarina, 1996, Soil Science and Plant Nutrition.

Effect of application of glucose, cellulose, and rice straw on nitrogen fixation (acetylene reduction and soil-nitrogen components) in anaerobic soil

E. Takahashi, I. Watanabe, Michiharu Kobayashi, 1989 .

Predominance of hydrogen-utilizing bacteria among N2-fixing bacteria in wetland rice roots

W. Barraquio, I. Watanabe, M. Daroy, 1982 .

Blue-green algal treatment and inoculation had no significant effect on rice yield in an acidic wetland soil

P. Roger, P. Reddy, W. Ventura, 1986 .

Relationship between blue-green alga growth and the standing crop in wetland rice fields.

P. Roger, I. Watanabe, S. Kulasooriya, 1980 .

The effects of temperature and selected growth regulating substances on sporulation in the Aquatic Fern Azolla

I. Watanabe, E. G. Cutter, Y. R. Herd, 1989 .

Phosphorus as a factor limiting nitrogen fixation in flooded rice soils.

I. Watanabe, W. Cholitkul, 1990 .

Nitrogen Mineralization in Tropical Wetland Rice Soils : II. Application of Exponential Models

I. Watanabe, I. J. Manguiat, G. Mascarina, 1996 .

NOTES Epiphytic Occurrence ofAzorhizobium caulinodans andOther Rhizobia on HostandNonhostLegumes

I. Watanabe, 1989 .

Nutrient input by the photosynthetic aquatic biomass in a ricefield and its contribution to the maintenance of soil microbial biomass

P. Roger, I. Watanabe, S. Ardales, 1989 .

INORGANIC NITROGEN MOVEMENT IN TROPICAL SOILS : I. Nitrification and Nitrogen Loss in Poorly Drained Soil during Rainy Season

I. Watanabe, B. Padre, 1977 .

Estimation of N2 fixation of soybean by comparison of different 15N labeling methods.

Tomio Yoshida, I. Watanabe, C. Chiu, 1990 .

The mechanism of excessive iron‐uptake (iron toxicity) of wetland rice

Gero Benckiser, J. Ottow, I. Watanabe, 1984 .

Autoradiographic technique for screening chemolithotrophic hydrogen-utilizing bacteria

I. Watanabe, T. Gowda, 1983 .

Classification of Azolla spp., section Azolla

T. Lumpkin, W. Zimmerman, I. Watanabe, 1989, Euphytica.

Appearance and Chemical Composition of Soybean Seeds in Germplasm Collection of Japan : II. Correlation among protein, lipid and carbohydrate percentage

I. Watanabe, T. Nagasawa, 1990 .

Appearance and Chemical Composition of Soybean Seeds in Germplasm Collection of Japan : I. Frequency distribution of grain size, seed coat colour, hilum colour and content of chemical components, with special reference to collection site

I. Watanabe, T. Nagasawa, 1990 .

Inorganic nitrogen movement in tropical soils: II. The Fate of Ammonium Fertilizer in Well and Poorly Drained Soils in the Rainy Season

I. Watanabe, B. Padre, 1979 .

Evidence for vapor loss of14C-carbofuran from rice plants

I. Watanabe, R. Siddaramappa, 1979, Bulletin of environmental contamination and toxicology.

Persistence in Soil and Absorption and Movement of Carbofuran in Rice Plants

I. Watanabe, R. Siddaramappa, A. Tirol, 1979 .

Method for the Evaluation of Drought Tolerance in Cowpea (Vigna unguiculata (L.) WALP.)

I. Watanabe, 1997 .

Drought Tolerance of Cowpea ( Vigna unguiculata (L.)Walp.) II. Field Trial in the Dry Season of Sudan Savanna and Dry Matter Production of Potted Plants under Water-stress

I. Watanabe, T. Terao, 1998 .

Drought tolerance of cowpea (Vigna unguiculata (L.) Walp.), 1: Method for the evaluation of drought tolerance

I. Watanabe, 1998 .

Mechanism of Varietal Differences in Photosynthetic Rate of Soybean Leaves : I. Correlations between photosynthetic rates and some chloroplast characters

I. Watanabe, 1973 .

Mechanism of Varietal Differences in Photosynthetic Rate of Soybean Leaves : II. Varietal differences in the balance between photochemical activities and dark reaction activities

I. Watanabe, 1973 .

Studies on the Seed Production of Soybean : I. Effect of temperature on photosynthesis of soybean.

I. Watanabe, M. Ojima, J. Fukui, 1965 .

Pentachlorophenol (PCP) decomposing activity of field soils treated annually with PCP

I. Watanabe, 1978 .

Effect of the difference of tillage operations on microbial properties of soil layers

I. Watanabe, Y. Tokunaga, Tatsuhiko Suzuki, 1969 .

Allozyme [IbJpes Relatives of Water Fern Azolla J'aponica and its (Azollaceae) Growing in Japan

I. Watanabe, Takeshi Suzukii, Takumi Shiraiwa, 2014 .

Allozyme Types of Water Fern Azolla japonica and its Relatives (Azollaceae) Growing in Japan

I. Watanabe, Takeshi Suzuki, Takumi Shiraiwa, 2005 .

Organic matter and r ice

I. Watanabe, 2002 .

Studies on the Seed Production of Soybean : II. Effect of three major nutrient elements supply and leaf age on the photosynthetic activity and diurnal changes in photosynthesis of soybean under constant temperature and light intensity.

I. Watanabe, M. Ojima, J. Fukui, 1965 .

Mechanism of Varietal Differences in Photosynthetic Rate of Soybean Leaves : III. Relationship between photosynthetic rate and some leaf-characters such as fresh weight, dry weight or mesophyll volume per unit leaf area

I. Watanabe, Kosei Tabuchi, 1973 .

The response of Anabaena -free Azolla and the symbiotic Azolla to temperature

S. Asuming-Brempong, I. Watanabe, 1978 .