A5060305866- Rice Cultivation and Yield Improvement
- Plant responses to water stress
- Plant nutrient uptake and metabolism
- GABA and Rice Research
- Crop Yield and Soil Fertility
- Irrigation Practices and Water Management
- Genetic Mapping and Diversity in Plants and Animals
- Agricultural Systems and Practices
- Agricultural Science and Fertilization
- Leaf Properties and Growth Measurement
- Remote Sensing and LiDAR Applications
- Remote Sensing in Agriculture
- Plant Stress Responses and Tolerance
- Plant Micronutrient Interactions and Effects
- Soil Carbon and Nitrogen Dynamics
- Soil Mechanics and Vehicle Dynamics
- Greenhouse Technology and Climate Control
- Agriculture, Soil, Plant Science
- Climate change impacts on agriculture
- Forest ecology and management
- Plant Water Relations and Carbon Dynamics
- Agronomic Practices and Intercropping Systems
- Tree Root and Stability Studies
- 3D Surveying and Cultural Heritage
- Wheat and Barley Genetics and Pathology
The University of Tokyo
2013-2024
Bunkyo University
2024
Tokyo University of Science
2023
University of the Philippines Los Baños
2023
International Rice Research Institute
2014-2021
Nissan (United Kingdom)
1995
Aerobic culture is a water-saving technique for direct-seeded rice cultivation. Growing under continuously unsaturated soil conditions can maximize water-use efficiency and minimize both labor requirements greenhouse-gas emissions. Under temperate climate, aerobic produce yield greater than 9 t ha–1 especially in central Japan (11.4 ha–1). using large-scale center-pivot sprinklers being established the United States, where yields surpass 10 ha–1. However, remain at less 8 tropics. The high...
Background and AimsIncreasing physical water scarcity is a major constraint for irrigated rice (Oryza sativa) production. 'Aerobic culture' aims to maximize yield per unit input by growing plants in aerobic soil without flooding or puddling. The objective was determine (a) the effect of management on root morphology hydraulic conductance, (b) their roles plant–water relationships stomatal conductance culture.
Floods are major constraints to crop production worldwide. In low-lying, flood-prone areas of the tropics, longer-term partial submergence (stagnant flooding [SF]) greatly reduces rice yield. This study assesses shoot growth and several physiological mechanisms associated with SF tolerance in rice. Five genotypes contrasting responses were evaluated field ponds. Following transplanting, floodwater was gradually increased at a rate ∼2 cm day−1 reach final depth 50 then maintained until...
Abstract Severe lodging has occurred in many improved rice varieties after the recent strong typhoons East and Southeast Asian countries. The indica variety Takanari possesses culm characteristics due to its large section modulus, which indicates thickness, whereas japonica Koshihikari is subject substantial bending stress thick cortical fibre tissue. To detect quantitative trait loci (QTLs) for resistance eliminate effects of genetic background, we used reciprocal chromosome segment...
Spikelet number per panicle is a major target trait for improving rice ( Oryza sativa L.) yield in upland fields and strongly affected by water stress. The consists of rachis branches spikelets, which preflowering spikelet abortion often occurs. We investigated the effect timing intensity stress at early reproductive stage on morphology panicles field pot experiments. In experiment, caused high rates abortion, was reduced 48% average. Pot experiments revealed effects were dependent...
Abstract Background and Aims Rice ecosystems in the tropical coastal areas are subject to two types of flooding stress: transient complete submergence long-term water stagnation (stagnant flooding). Here, we aimed dissect mechanisms for stagnant tolerance rice genotypes carrying SUB1, a quantitative trait locus tolerance. Methods We screened 80 elite under stress lowland fields wet dry seasons, examined promising following seasons. Key results Yield reduction averaged 48 % season 89 season....
Unmanned aerial vehicle (UAV) and structure from motion (SfM) photogrammetry techniques are widely used for field-based, high-throughput plant phenotyping nowadays, but some of the intermediate processes throughout workflow remain manual. For example, geographic information system (GIS) software is to manually assess 2D/3D field reconstruction quality cropping region interests (ROIs) whole field. In addition, extracting phenotypic traits raw UAV images more competitive than directly digital...
The total water supply (irrigation plus rainfall) would determine biomass production. This study aimed to elucidate the effects of and cultivar differences on dry matter production rice grown under upland conditions. Three cultivars ('Yumeno-hatamochi ', YHM; 'Lemont LMT; 'Nipponbare NPB) were used an site with three regimes (rain-fed, RU; irrigated, IU; deficit during panicle-formation stage, WD) in a flooded lowland (FL) Japan from 2001 2003. amount aboveground (TDM) NPB RU (1101 g m-2)...
A Deep Root System May Be Desirable Plant Characteristic In Upland Rice Because It Improves The Plant's Water Extraction Capacity. Objective of Present Study Was To Assess Development Cultivars Relation Soil Moisture Change and Status Under Conditions With Moderate Deficits Field Simple Lysimeter Experiments. We Used One Cultivar ('Yumeno-Hatamochi [Yhm]) Two Lowland ('Lemont' [Lmt] 'Nipponbare' [Npb]) Experiment, No Supplemental From 88 106 Days After Sowing (Das) 116 145 Das. Yhm Npb...