Nutrient management for rainfed lowland rice in northeast Thailand

Haefele, Stephan M.; Konboon, Yothin

doi:10.1016/j.fcr.2009.09.007

Cited by 36 publications

(17 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Schmitter et al (2011) reported that the grain yield increase along the cascade with increasing distance from irrigation channel resembled the soil fertility pattern observed in the top soil (that is, an increase in SOC and decrease in sand content in this watershed area). A similar spatial variability of grain yield has been reported by Homma et al (2003), Rüth and Lennartz (2008) and Haefele and Konboon (2009) who observed increasing grain yields due to deposition of nutrient rich fine sediments at the end of a toposequence.…”

Section: Seasonal Differencessupporting

confidence: 85%

Toposequential variation in soil properties and crop yield from double-cropping paddy rice in Northwest Vietnam

Oo¹

2013

J. Cereals Oilseeds

View full text Add to dashboard Cite

To access the spatial differences in soil properties and crop yield at cascade level affected by either sediment induced or farmers' fertility practice, field experiments were conducted in Cheing Khoi watershed area during spring and summer seasons with two different cascades. The cascades had fertilized and unfertilized parts and all the measurements were conducted at the top, middle and bottom field of each part. In both rice cascades, middle and bottom fields showed high silt and clay content while sand was the dominant type in the top field. Total nitrogen (TN) and carbon (TC) contents were significantly higher in lower lying fields than top field. Seasonal average surface water NH 4 concentrations for top, middle and bottom fields were 2.7, 3.4 and 3.2 mg L -1 in spring and 2.8, 3.5 and 3.1 mg L -1 in summer, respectively. Differences were substantial in yield components parameters and grain yield depending on toposequence position. Grain yields in the middle fields of both rice cascades were higher than other field positions in both fertilized and unfertilized fields. The grain yields were significantly related with surface water NH 4 concentration, TN content, sand and silt content of soil. The larger toposequential differences in crop yield require different field specific management practices for each position in order to improve rice production in this watershed area.

show abstract

Section: Seasonal Differencessupporting

confidence: 85%

Toposequential variation in soil properties and crop yield from double-cropping paddy rice in Northwest Vietnam

Oo¹

2013

J. Cereals Oilseeds

View full text Add to dashboard Cite

show abstract

“…Another problem is the low fertilizer-use efficiency in the conventional nutrient management regime in rice farming (Haefele & Konboon, 2009). A recent large-scale on-farm demonstration (291 sites in 20 provinces over 9 years) in our study area showed that the yield of transplanted rice increased by 10% under site-specific nutrient management (from 2.60 to 2.86 t ha −1 ) relative to farmer nutrient management, leading to an increased net return by around 100 USD ha −1 (Jairin et al, 2017a;Wongboon et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Thus, relying on a single fertilizer regime is likely to result in low fertilizer-use efficiency of rice (Banayo et al, 2018a). To enhance fertilizer-use efficiency in rainfed lowland rice, the principle of site-specific nutrient management was proposed for northeastern Thailand after a series of on-farm trials in the 2000s demonstrated the viability of this approach (Haefele & Konboon, 2009). Subsequently, a user-friendly decision-support tool was developed to help farmers determine the amount of fertilizer they required from soil fertility and the topographic position of the rice field, and was successfully evaluated in fields in all provinces in the region (Wongboon et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Farmer-participatory evaluation of mechanized dry direct-seeding technology for rice in northeastern Thailand

Sansen

Wongboon

Jairin

et al. 2019

Plant Production Science

View full text Add to dashboard Cite

Rice technologies that are designed to reduce risks due to climate variations, improve productivity, or overcome labor scarcity are important in tropical Asia. The objective of this study was to evaluate mechanized options for dry direct-seeding of rice in terms of the productivity and production costs in rainfed lowlands. In a series of on-farm research trials over 3 years in Ubon Ratchathani province, Thailand, we compared seeding by seed drills mounted on two-wheel tractors with manual broadcast seeding. Demonstration trials of seed drills and site-specific nutrient management in 2017 with 11 of 26 participating farmers produced 2.50 t ha −1 of grain yield, but unexpected heavy storms forced the other 15 farmers to switch from dry to wet direct-seeding or manual transplanting. The seed drills produced 32% higher grain yield than manual broadcast seeding (3.3 vs. 2.5 t ha −1) in 2014, and 14-24% higher yield (3.3-3.6 vs. 2.9 t ha −1) in 2015. Mechanized seeding enabled seeding rate reduction by 50% in 2014 and by 52-61% in 2015, resulting in lower production costs than with manual seeding. Our results suggest that mechanized dry direct-seeding of rice with improved nutrient management can enhance farmer livelihoods in rainfed environments in northeastern Thailand. This approach can significantly reduce production costs compared with manual transplanting, while maintaining or increasing productivity compared with conventional manual broadcast seeding.

show abstract

“…It is important to recognize variation in fertilizer requirement and risks associated with fertilizer application. Thus, site-specific fertilizer recommendations are required that take toposequence and the field-specific indigenous nutrient supply into account, as proposed by Haefele and Konboon (2009) for Northeast Thailand.…”

Section: Discussionmentioning

confidence: 99%

Spatial Variations in Water Availability, Soil Fertility and Grain Yield in Rainfed Lowland Rice: A Case Study from Savannakhet Province, Lao PDR

Inthavong

Fukai

Tsubo

2011

Plant Production Science

View full text Add to dashboard Cite

Nutrient management for rainfed lowland rice in northeast Thailand

Cited by 36 publications

References 21 publications

Toposequential variation in soil properties and crop yield from double-cropping paddy rice in Northwest Vietnam

Toposequential variation in soil properties and crop yield from double-cropping paddy rice in Northwest Vietnam

Farmer-participatory evaluation of mechanized dry direct-seeding technology for rice in northeastern Thailand

Spatial Variations in Water Availability, Soil Fertility and Grain Yield in Rainfed Lowland Rice: A Case Study from Savannakhet Province, Lao PDR

Contact Info

Product

Resources

About