Kensuke Okada

ORCID: 0000-0003-4828-2863
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About
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Research Areas
  • Soil Carbon and Nitrogen Dynamics
  • Rice Cultivation and Yield Improvement
  • Crop Yield and Soil Fertility
  • Agricultural Science and Fertilization
  • Agronomic Practices and Intercropping Systems
  • Plant Micronutrient Interactions and Effects
  • Soil and Water Nutrient Dynamics
  • Aluminum toxicity and tolerance in plants and animals
  • Plant nutrient uptake and metabolism
  • Fungal Plant Pathogen Control
  • Sunflower and Safflower Cultivation
  • Soybean genetics and cultivation
  • Genetic and Environmental Crop Studies
  • Silicon Effects in Agriculture
  • Peatlands and Wetlands Ecology
  • Muscle activation and electromyography studies
  • Ion channel regulation and function
  • Irrigation Practices and Water Management
  • Legume Nitrogen Fixing Symbiosis
  • Plant Disease Resistance and Genetics
  • Sugarcane Cultivation and Processing
  • Plant Physiology and Cultivation Studies
  • Genomics, phytochemicals, and oxidative stress
  • Plant responses to water stress
  • RNA Interference and Gene Delivery

The University of Tokyo
2012-2021

Okayama University
2014

Japan International Research Center for Agricultural Sciences
2001-2010

National Agriculture and Food Research Organization
2010

Central Region Agricultural Research Center
2008

Kwansei Gakuin University
2008

NTL Institute for Applied Behavioral Science
2008

Agricultural Research Center
2007

Northwestern University
1998

Illinois Institute of Technology
1998

Pigeon pea was shown to be more efficient at utilizing iron-bound phosphorus (Fe-P) than several other crop species. This ability is attributed root exudates, in particular piscidic acid and its p-O-methyl derivative, which release from Fe-P by chelating Fe(3+). normally intercropped with cereals under low-input conditions the Indian subcontinent. Although pigeon can utilize relatively insoluble Fe-P, must rely on soluble calcium-bound phosphorus. finding suggests that cultivation of...

10.1126/science.248.4954.477 article EN Science 1990-04-27

Wild edibles continue to be a significant contributor the global food basket in much of developing world. A consensus has now been formed that information on wild is an important part ethnobotanical knowledge and hence elucidating region-specific patterns habitat management consumption assists policy making with regard natural conservation, human nutrition, health. Using original data set from Gujarat, India, present research aims document collective possessed by local Vasava tribe, as well...

10.1186/s13002-018-0254-3 article EN cc-by Journal of Ethnobiology and Ethnomedicine 2018-08-29

10.1023/a:1004298817861 article EN Plant and Soil 1997-01-01

The capability to utilize different forms of nitrogen (N) by sorghum (Sorghum bicolor), rice (Oryza sativa), maize (Zea mays), and pearl millet (Pennisetum glaucum) was determined in pot experiments. Seedlings were grown for 21 d without N, or with 500 mg N kg(-1) soil applied as ammonium nitrate, bran a mixture straw. No treatment-dependent changes root length, surface area, fractal dimension observed. Shoot growth uptake correlated the inorganic (ammonium nitrate) concentration soil,...

10.1093/jxb/erh167 article EN Journal of Experimental Botany 2004-06-18

Sunflower, a major edible oil crop producing high-quality and healthful for human consumption also recycled use as feedstock to produce biodiesel fuel, is recently being cultivated in rotation with rice the paddy field. The of cultivars high oleic acid content has higher oxidation stability better nutritional properties than standard cultivars, which have linoleic content. In this study, we evaluated effects excess water on plant growth, seed yield, quality. Seed yield components, total were...

10.1626/pps.14.233 article EN cc-by-nc Plant Production Science 2011-01-01

In crop rotations that include rapeseed (Brassica napus L.), the growth of crops following is sometimes inhibited. The aim this study was to assess role glucosinolates (GSLs) in inhibitory effect. Three cultivars with zero erucic acid content (Asakano-natane, Kizakino-natane, Nanashikibu: single-low cultivars) and one cultivar low GSL contents (Kirariboshi: double-low cultivar) were grown. differed greatly depending on plant part, stage development, cultivar. Progoitrin gluconapin detected...

10.1626/pps.13.150 article EN Plant Production Science 2010-01-01

Double-low rapeseed cultivars that produce no erucic acid and have only a small amount of glucosinolates are widely used. However, the roots in mature plant residue leaves these seedlings still contain large biologically active glucosinolates, it is important to clarify effect cultivation on subsequent crops. We analyzed biological activities tissues double-low cultivar at harvest. The laboratory bioassays revealed seeds plants contained some autotoxic components were volatile water-soluble....

10.1626/pps.14.339 article EN cc-by-nc Plant Production Science 2011-01-01

Bisphenol A (BPA) is an endocrine disrupting chemical and several biological effects have been reported. Previously, protein disulphide isomerase (PDI) was isolated as a target molecule of bisphenol A. In this study, to clarify the BPA on PDI functions, we investigated relationship between structure derivatives PDI-mediated chaperone activity. We also changes in domain binding chemicals, using mutants oxidized or reduced PDI. Among six only which phenol group, can bind these chemicals...

10.1093/jb/mvn075 article EN The Journal of Biochemistry 2008-05-15

Abstract Growth responses of rice (Oryza sativa), sorghum (Sorghum bicolor), pearl millet (Pennisetum glaucum), and maize (Zea mays) to applications the organic form nitrogen (N) were examined under field conditions in 2000–2001. Nitrogen was applied at rate 15 g m−2 inorganic N (IN, urea) or (ON, a mixture bran straw). Organic application had no significant effect on concentration soil (ammonium nitrate), but increased neutral phosphate-buffer- extractable early growth stage. The shoot dry...

10.1080/00380768.2003.10410030 article EN Soil Science & Plant Nutrition 2003-06-01

The production of pearl millet [ Pennisetumn glaucum (L.) R. Br.] in the low fertility sandy soils Sahel region northern sub‐Saharan Africa requires careful management. An experiment was established 1993 at Niamey Center International Crops Research Institute for Semi‐Arid Tropics, Niger. objectives were to (i) determine effect long‐term applications fertilizer, crop residue, cattle manure, and combinations these on changes grain yield (GY) total dry matter (TDM) millet; (ii) management...

10.2134/agronj2015.0375 article EN Agronomy Journal 2016-01-29

Conventional seedling mats for rice transplanters in Japan are heavy to carry, and much labor is required collect, wash store the nursery boxes. In addition, seeding time overlaps with peak spring. To reduce such labor, we developed a “seed-mat” consisting of hardened seeds (Oryza sativa L.) glued onto molded rice-hull mat cover soil on. Seed hardening, which done by soaking water at 15ºC 5 d followed drying, heating 50ºC or 7 d, reduced 50% germination (T50). dormant seeds, before hardening...

10.1626/pps.11.108 article EN cc-by-nc Plant Production Science 2008-01-01
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