Lowland rice improvement in northern and northeast Thailand

Khunthasuvon, S.; Rajastasereekul, Satit; Hanviriyapant, Prissana; Romyen, Panya; Fukai, S.; Basnayake, J.; Skulkhu, Ekasith

doi:10.1016/s0378-4290(98)00109-9

Cited by 40 publications

(10 citation statements)

References 4 publications

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“…This is in line with previous studies (Schnier et al, 1990;Peng et al, 1996;Khunthasuvon et al, 1998;Haefele et al, 2008). This is in line with previous studies (Schnier et al, 1990;Peng et al, 1996;Khunthasuvon et al, 1998;Haefele et al, 2008).…”

Section: Discussionsupporting

confidence: 94%

“…The results of ANOVA indicated that the response of grain yield to fertilizer application was consistent across environments, and was not aff ected by water availability, soil properties, or establishment methods. This is in line with previous studies (Schnier et al, 1990;Peng et al, 1996;Khunthasuvon et al, 1998;Haefele et al, 2008). Khunthasuvon et al (1998) and Haefele et al (2008) indicated that without severe water stress, grain yield of lowland rice could be improved through increased nutrient availability.…”

Section: Discussionsupporting

confidence: 92%

“…This is in line with previous studies (Schnier et al, 1990;Peng et al, 1996;Khunthasuvon et al, 1998;Haefele et al, 2008). Khunthasuvon et al (1998) and Haefele et al (2008) indicated that without severe water stress, grain yield of lowland rice could be improved through increased nutrient availability. There was signifi cant genotypic diff erence in response to applied fertilizer, confi rming previous studies in the lowlands in Asia Inthapanya et al, 2000;Haefele et al, 2008).…”

Section: Discussionsupporting

confidence: 92%

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Grain Yield Performance of Selected Lowland NERICA and Modern Asian Rice Genotypes in West Africa

2010

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Six lowland experiments were conducted over three years in southern Benin to assess yield differences in 28 rice (Oryza spp.) genotypes grown under nonfertilized and fertilized conditions. These included the interspecific hybrids, the lowland New Rice for Africa (NERICA) genotypes developed from crossing O. sativa and O. glaberrima Fertilizer rates were 70–86N: 30–37P2O5: 30–37K2O kg ha−1 Fertilizer application increased average grain yield across all genotypes and experiments by 39% (154 g m−2 increase). Considerable genotypic differences existed in grain yields under both nonfertilized and fertilized conditions, and in yield response to fertilizer application. Two lowland NERICA genotypes (‘NERICA‐L‐6’ and ‘‐54’) outyielded ‘IR 72’ and ‘WITA4’ (standard checks) across nonfertilized and fertilized conditions in four experiments with favorable water availability in wet seasons (651 vs. 575 g m−2). The high grain yields resulted from large spikelet number m−2 and biomass accumulation. In contrast, three indica genotypes from Asia (‘B 6144F‐MR‐6‐0‐0’, ‘IR 70181‐32‐PMI‐1‐1‐5‐1’, and ‘PSBRc 80’) outperformed the checks in two experiments, one straddling wet and dry seasons and the other with no standing water during most of the usual wet rice‐growing season. These results indicate that while specific adaptations are likely to provide significant yield advantage in particular environments, interspecific breeding still offers an effective approach to improving lowland rice productivity.

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Section: Discussionsupporting

confidence: 94%

Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 92%

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Grain Yield Performance of Selected Lowland NERICA and Modern Asian Rice Genotypes in West Africa

2010

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“…Multiple regression analysis on the factors of SOC content (g kg-I), growth duration (GD, days) and the amount of N fertilizer (N, g m-2 ) explained 71 % of the variation of rice biomass (RB, g m-2 ) and 67% of that of yield (RY, g m-2 ) at each field, as shown in the following regression equations: RB= 20.2 X SOC+49.0 X N + 11.9 X GD-1022 R2=0.71 (standardized: RB* = 0.31 X SOC* + 0.26 X N* +0.62 X GD*) RY=6.15 xSOC+27.6 X N +3.37 X GD-293 R2=0.67 (standardized: RY*=0.27xSOC*+0.42xN* +0.51 XGD*) Agronomic efficiency of nitrogen (yield increase per unit applied nitrogen) estimated from the multiple regression analysis was 27.6 g g-I and similar to those experimentally obtained in Northeast Thailand (Khunthasuvon et al, 1998;Ohnishi et al, 1999). The regression equations suggest that the differences in the rice biomass and yield between the SOC-richest field and the SOC-poorest field were 410 and 130 g m-2 , respectively, even when the transplanting date and fertilizer application rate were the same.…”

Section: Resultssupporting

confidence: 79%

Toposequential Variation in Soil Fertility and Rice Productivity of Rainfed Lowland Paddy Fields in Mini-Watershed(Nong)in Northeast Thailand

Homma

Horie

Shiraiwa

et al. 2003

Plant Production Science

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“…Not only could more crops be planted, water availability would facilitate effective use of other agricultural inputs such as fertilizers, pesticides and improved crop varieties, also leading to higher crop productivity and production. Use of such inputs in conditions of water stress may not improve yields and can even be counterproductive (Khunthasuvon et al, 1998).…”

Section: Exploiting the Nexus Between Groundwater And Agriculture In mentioning

confidence: 99%

Achieving water security in Nepal through unravelling the water-energy-agriculture nexus

Nepal

Neupane

Belbase

et al. 2019

International Journal of Water Resources Development

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This article investigates water security in Nepal from the perspective of the water-energy-agriculture (food) nexus, focusing on pathways to water security that originate in actions and policies related to other sectors. It identifies promoting development of Nepal's hydropower potential to provide energy for pumping as way to improve water security in agriculture. Renewable groundwater reserves of 1.4 billion cubic meters (BCM), from an estimated available balance of 6.9 BCM, could be pumped to irrigate 613,000 ha of rainfed agricultural land in the Terai plains, with a potential direct economic gain of USD 1.1 billion annually and associated benefits including promotion of energy-based industry, food security and local employment. Governance also plays an important role in addressing water security. We conclude that a nexus-based approach is required for effective water management and governance.ARTICLE HISTORY (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.increasing recognition that water resources management is complex and intertwined with the development and social sectors (Biswas, 2004;Falkenmark, 2001). More recently, UN-Water (2013) defined water security as 'the capacity of a population to safeguard sustainable access to adequate quantities of acceptable quality water for sustaining livelihoods, human well-being, and socio-economic development, for ensuring protection against water-borne pollution and water-related disasters, and for preserving ecosystems in a climate of peace and political stability', thus balancing the needs for water management related to socioeconomic development, health, disasters and ecosystems. Further, it is now recognized that water security cannot be treated as a stand-alone issue. Attention is turning to the waterenergy-food (WEF) nexus: the complex interactions within the wider framework of water, food and energy which mean that the actions in each sector can have effects in the others, and that water security, energy security and food security are closely linked (FAO, 2014). Rasul (2014) emphasized the role of the Hindu Kush Himalaya (HKH) ecosystem services in sustaining all three in downstream areas, and the importance of the nexus in South Asia resulting from the high dependency of downstream communities on upstream ecosystem services. In this wider framework, investment in water infrastructure and securing water is equally important to bring economic productivity and growth, and water security can be considered as the longer-term payoff of higher economic growth and lower poverty (Asian Development Bank [ADB], 2016; Rasul, Neupane, Hussain, & Pasakhala, 2019).Despite having an estimated 7000 m 3 per person per year of water resources (FAO, 2016), Nepal's water security is thought to be among the weakest in Asia and the Pacific (ADB, 2016). Improving water security requires better...

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Lowland rice improvement in northern and northeast Thailand

Cited by 40 publications

References 4 publications

Grain Yield Performance of Selected Lowland NERICA and Modern Asian Rice Genotypes in West Africa

Grain Yield Performance of Selected Lowland NERICA and Modern Asian Rice Genotypes in West Africa

Toposequential Variation in Soil Fertility and Rice Productivity of Rainfed Lowland Paddy Fields in Mini-Watershed(Nong)in Northeast Thailand

Achieving water security in Nepal through unravelling the water-energy-agriculture nexus

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