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Effect of Organic Sources and Urea on N Transformation and Yield of Lowland Rice Grown in Clay Loam Soil
N forms yield organics urea NUE rice
2010/11/15
Field experiments were conducted during Kharif 2006 and 2007 in clay loam soil to study the
effect of organic sources and urea on N transformation and yield of rice. The treatments consisted of addit...
High-yielding Crop Management by Enhancing Growth in Reproductive Stage of Direct-Seeded Rainfed Lowland Rice (Oryza sativa L.) in Northeast Thailand
Biomass production Growth duration Nitrogen uptake Reproductive stage
2010/3/4
The crop management in direct-seeded rice to promote growth during the reproductive stage was evaluated in weed-controlled toposequentially intermediate fields in a small watershed in Northeast Thaila...
Four Decades of Breeding for Varietal Improvement of Irrigated Lowland Rice in the International Rice Research Institute
Breeding Disease resistance Grain quality Insect resistance Irrigated rice Yield potential
2009/7/29
Since the establishment of the International Rice Research Institute (IRRI) in 1960, IRRI’s breeding effort in varietal improvement for irrigated lowland has passed four decades. Breeding of semi-dwar...
Genotypic Variation in Response of Rainfed Lowland Rice to Prolonged Drought and Rewatering
Drought Drought recovery Osmotic adjustment Rainfed lowland rice Root
2009/7/29
Duration of the drought period is important for plant response during drought and after rewatering. We hypothesized that, if drought duration is extended, (1) high seedling vigor and rapid developmen...
Topographic Position Influences Water Availability in Rainfed Lowland Rice at Rajshahi,Northwest Bangladesh
Rainfed lowland Rice Soil water Topography Yield
2009/7/28
Topographic Position Influences Water Availability in Rainfed Lowland Rice at Rajshahi,Northwest Bangladesh.
Estimating Percolation and Lateral Water Flow on Sloping Land in Rainfed Lowland Rice Ecosystem
Percolation Rice Toposequence Water table
2009/7/24
Quantifying water losses in paddy fields assists estimation of water availability in rainfed lowland rice ecosystem. Little information is available on water balance in different toposequence position...
Molecular Breeding for Rainfed Lowland Rice in the Mekong Region
Grain quality Marker-assisted selection Molecular breeding Rice
2009/7/24
In the past 20 years, the rice-breeding program in Thailand had little success in developing new cultivars to replace Kao Dawk Mali 105 (KDML105) and Kao Khor 6 (RD6) for the rainfed lowland rice envi...
Can Yields of Lowland Rice Resume the Increases that They Showed in the 1980s?
Aerobic culture Controlled release fertilizers Early transplanting Hybrids Plant density SRI
2009/7/24
The annual rate of rice yield increase in the world declined from 2.7 % in the 1980s to 1.1 % in the1990s. The continued world population increase requires resumption of the previous rate. The objecti...
Relay-Intercropping of Stylosanthes guianensis in Rainfed Lowland Rice Ecosystem in Northeast Thailand
Dry season Forage production Green manure Nutrient deficit Rainfed rice
2009/7/23
We evaluated the usefulness of the Stylosanthes guianensis (stylo)- rice relay-intercropping system for increasing agricultural productivity in Northeast Thailand. Although large production variabilit...
Stomatal Responses in Rainfed Lowland Rice to Partial Soil Drying;Evidence for Root Signals
Drought Rainfed lowland Rice Root signals Stomatal conductance Water deficit
2009/7/21
The role of root signals in water deficit responses of rice (Oryza sativa L.) is important in the alternate flooding and drying conditions encountered in the rainfed lowlands, where the abundant roots...
Nutrient Deficiency in the Rice-Stylo (Stylosanthes guianensis) Relay-Intercropping System in Rainfed Lowland Rice Ecosystem in Northeast Thailand
Dry season Restoration trial Successive cropping Sulfur deficiency
2009/7/21
The rice-stylo (Stylosanthes guianensis) relay-intercropping system in paddy fields has previously been shown to increase agricultural productivity in Northeast Thailand, but successive relay-intercro...
Stomatal Responses in Rainfed Lowland Rice to Partial Soil Drying;Comparison of Two Lines
Hardpan Leaf water potential Mechanical impedance Rainfed lowland Rice Root signals Stomatal conductance Water deficit
2009/7/20
Previously, we demonstrated that root tips in drying soil communicate with shoots for stomatal closure in rainfed lowland rice, despite further water being available at depth. This study examines vari...
Diurnal and Phenological Changes of Bleeding Rate in Lowland Rice Plants(Crop Physiology and Cell Biology)
Bleeding rate Developmental stage Diurnal change Oryza saliva L Phytomer
2009/7/10
The bleeding rate of rice plants grown in the farmer's paddy field was examined for use as an index of root activity. The bleeding rate started to decrease immediately after removing the shoot of rice...
Effect of Rock Phosphate Incubated with FYM on Nutrient Uptake and Yield of Lowland Rice
Rock phosphate apparent recovery STCR value relative agronomic efficiency
2010/11/9
Field experiments were conducted during 2001 and 2002 at Tamil Nadu Agricultural University,
Coimbatore to study the effect of different sources of phosphorus on nutrient uptake and yield of rice. Th...