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Analysis of the Tillering Behavior of the Rice Plant in the Paddy Field:I. The tillering pattern under two nitrogen levels of basal dressing
First emerged tiller Number of tillers Relative tiller position Rice Synchronous growth
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2009/8/5
Under the two types of nitrogen dressing which prevail in Miyagi prefecture, rice cv. Sasanishiki was cultivated in the paddy field, and the tillering pattern was analyzed. One type of nitrogen dress...
Response of Leaf Water Potential of Rice (Oryza sativa L.) to Evaporative Demand under Paddy Field Conditions:II. Relationship between response and yield
Evaporative demand Grain yield Leaf water potential Location Radiation Spikelet number
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2009/7/31
We observed previously (Part 1) that maintenance ability of leaf water potential (Ψ1) in rice plants under paddy field conditions changed depending on planting years and seasons and individual locatio...
Response of Leaf Water Potential of Rice (Oryza sativa L.) to Evaporative Demand under Paddy Field Conditions : I. Changes with plant development
Evaporimeter Evaporative demand Growth stage Leaf water potential
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2009/7/31
Because the leaf water potential (Ψ1) of the rice plant (Oryza sativa L.) is strongly affected by the evaporative demand of the atmosphere under paddy field conditions, and most changes in Ψ1 reflect ...
Effect of Field Drainage on Root Lodging Tolerance in Direct-Sown Rice in Flooded Paddy Field
Direct-sown rice cultivation Field drainage Irrigation management Pushing resistance Rice Root Root-lodging tolerance
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2009/7/29
To elucidate the effect of drainage of paddy fields on root lodging tolerance in direct-sown rice, we measured the pushing resistance (R), diameter of hill at the base (Dm), shoot dry weight (Ws) and ...
Effects of Planting Pattern on the Interception of Solar Radiation by the Canopy and the Light Extinction Coefficient of the Canopy in Rice Plants Direct-sown in a Submerged Paddy Field
Crop growth rate Direct sowing Interception of solar radiation Light-intercepting characteristics Planting pattern Rice
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2009/7/24
In order to investigate effects of planting pattern on the interception of solar radiation by the canopy and the light extinction coefficient of the canopy in rice, the rice plants direct-sown in a su...
Effects of High Temperature on Growth,Yield and Dry-Matter Production of Rice Grown in the Paddy Field
Grain yield High temperatures Photosynthetic rate Rice (Oryza sativa L.) Spikelet sterility
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2009/7/23
The effect of high temperatures on growth, yield and dry-matter production of rice growing in the paddy field was examined during the whole growth period in a temperature gradient chamber (TGC) from 2...
Seedling Establishment of Rice Sown on Soil Surface in Flooded Paddy Field : I. Varietal difference in seedling establishment
Direct seeding Establishment Floating seedling Flooded paddy field Rice Seedling establishment
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2009/7/23
Field experiments were carried out to clarify the differences and key factors in the rate of seedling establishment among rice varieties sown on the soil surface in flooded paddy fields. The percentag...
Analysis of Physiological and Ecological Characteristics of Rice Cultivated with Direct Seeding on Dry Paddy Field
Direct seeding cultivation Mechanical transplanting cultivation Photosynthesis Rice
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2009/7/23
To understand the growth habit of rice plants under direct seedling cultivation on well-drained paddy fields, physiological and ecological characteristics were compared among directly seeded and trans...
Effect of Winter Weeds on Growth and Yield of Direct-Seeded Rice in No-tillage Dry Paddy Field
Direct sowing culture of paddy rice Fertilizer No-tillage Rice Winter weeds Yield
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2009/7/23
The effects of winter weeds on the growth and yield of direct-seeded rice (Oryza sativa L. cv. Akebono) were evaluated in a no-tillage dry paddy field where Alopecurus aequalis Sobol. var. amurensis (...
Studies on Palatability of Rice in Northern Kyushu:VIII. Nitrogen fertilizer and zeolite application fbr improving the eating-quality of rice produced on Andosol paddy field
Andosol Nitrogen fertilizer Palatability Protein content
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2009/7/22
This study was carried out to establish cultivation techniques that improve the eating-quality of rice grown in Andosol (AL) paddy fields by the modification of nitrogen fertilizer application and the...
Performance of a High-Yielding Modern Rice Cultivar Takanari and Several Old and New Cultivars Grown with and without Chemical Fertilizer in a Submerged Paddy Field
Dry matter production Grain yield Light extinction coefficient Nitrogen accumulation Old and new cultivars Rice Root length density
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2009/7/21
A high nitrogen-uptake capacity and effective use of absorbed nitrogen for dry matter and grain production are required to improve the production cost and environmental pollution. We characterized gra...
Studies on Direct Sowing Cultures of Rice in Northern Kyushu : Estimation of plant characteristics on lodging resistance for a highly palatable rice cultivar using direct sowing cultures in flooded paddy field
Direct sowing High palatabilty Lodging resistance Principal component analysis Rice Varietal difference
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2009/7/21
This study was undertaken to determine the plant characteristics which might be associated with lodging resistance for the selection of good eating-quality rice cultivars well adapted to direct sowin...
Varietal Differences in Growth, Lodging and Related Characters of Rice Plants Broadcasted in Submerged Paddy Field at Different Densities(Agronomy)
Direct sowing in submerged paddy field Flexural rigidity Grain yield Lodging Moment of inertia of area Planting density Rice Young's modulus
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2009/7/15
Seeds of rice cultivars, Nipponbare, Takanari and Chugoku 153 were broadcasted in the submerged paddy field at different densities. The density of seedlings after establishment was in the range of ab...
Characteristics of Dry Matter Production in Rice Plants, Cultivar Takanari Sown Directly in Submerged Paddy Field Compared with Conventionally Transplanted Plants(Agronomy)
Direct-sown rice in submerged field Dry matter production Extinction coefficient Grain yield
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2009/7/10
Dry matter production and the related characters in the rice plants sown directly in the submerged paddy field or in the drained field after puddling were compared with those in conventionally transpl...
Effect of Unevenness in a Paddy Field on the Early Growth and Tillering in Direct Seeding Cultivation of Rice(Agronomy)
Depth of water Direct seeding Early growth Lower nodal tiller Maximum number of tillers
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2009/7/10
To clarify the effect of unevenness in a field on the tiller development of direct-seeded rice plants, we investigated the height and growth at the same measuring points. The paddy field had a high de...