Options for increasing Boro rice production in the saline coastal zone of Bangladesh

Gaydon, Donald S.; Radanielson, Ando Mariot; Chaki, Apurbo Kumar; Sarker, M.M.R.; Rahman, Md. Atikur; Rashid, MH; Kabir, Md. Jahangir; Khan, A. A.; Gaydon, E.R.; Roth, Christian

doi:10.1016/j.fcr.2021.108089

Cited by 21 publications

(12 citation statements)

References 29 publications

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“…This results partly from an increase in yields, and partly from an increase in the average number of crops grown each year on a piece of land, projected from the historical trends. Despite problems with salinity and limited water supply for irrigation, with appropriate management there is also great potential to expand cropping in the coastal zone 57 , 58 , 70 – 72 , 76 , 77 and elsewhere 78 , including under conditions of climate change 70 and sea level rise potentially leading to greater flooding 77 . In addition, there are trials with increased cropping intensity of four crops per year 79 , while agricultural land could be used more optimally by increasing the area under pulses, oilseeds and spices, and to limit the area under potatoes 18 .…”

Section: Discussionmentioning

confidence: 99%

“…Rice and wheat yields have increased substantially in recent decades 15,17,[47][48][49] . Yields in current rice farming systems are about 50% below the potential yield 50 , and 20 to 30% below those that can be achieved with better practice [51][52][53][54][55][56][57][58] . Continuing large increases in rice yield are regarded as achievable 59 .…”

Section: Discussionmentioning

confidence: 99%

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The impact of climate change, population growth and development on sustainable water security in Bangladesh to 2100

Kirby

Mainuddin

2022

Sci Rep

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There are concerns that groundwater use for irrigation and for urban water supply is unsustainable in some parts of Bangladesh, particularly in the agriculturally productive northwest region. We use an integrated population – GDP – food – water model to examine water demand to 2100 in Bangladesh in development scenarios relevant to food and water security. The results indicate that irrigation water demand is projected to increase in coming decades, but later in the century it may decrease due to increasing crop yields and a falling population. The increased demand is greatest in the northwest region and, if unchecked, would increase concerns there about the unsustainable use of groundwater. The growth in demand is determined particularly by growth in crop yields, population growth and the fraction of food demand satisfied by imports. An extreme hot-dry climate change scenario has a lesser impact. This suggests that, in principle, Bangladesh can offset the impacts of climate change on irrigation water demand through its domestic policies. Urban water use currently also leads to concerns over unsustainable groundwater use. Our results suggest that urban water demand is likely to grow proportionately significantly more than irrigation water demand. Alternative sources for urban water are therefore urgently required.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The impact of climate change, population growth and development on sustainable water security in Bangladesh to 2100

Kirby

Mainuddin

2022

Sci Rep

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“…Following the parameterisation procedure as set out by Gaydon et al (2021), APSIM requires empirical local input data to drive the simulation process, i.e., daily climate such as minimum and maximum temperatures ( • C), solar radiation (MJ m − 2 ) and rainfall (mm). Additionally, measurable soil physical and chemical parameters are required, i.e., layer-wise pH, bulk density, and soil volumetric water contents at saturation (SAT), field capacity (DUL) and permanent wilting point (LL15), as well as initial soil organic carbon (C org ) and mineral N (NO 3 -, NH 4…”

Section: Apsim Parameterisation and Calibrationmentioning

confidence: 99%

Assessing the effects of management and hydro-edaphic conditions on rice in contrasting East African wetlands using experimental and modelling approaches

Grotelüschen

Gaydon

Langensiepen

et al. 2021

Agricultural Water Management

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Lowland rice yields in East Africa remain low despite favourable hydro-edaphic conditions as benefits from improved cultural management vary between and within wetland types and interactions are poorly understood. Hence, multi-year agronomic field experiments were established to assess the differential responses of lowland rice to management (rainfed 0 and 60 kg N ha − 1 , and irrigated 120 kg N ha − 1 + 60 kg PK ha − 1 ) and field position within a floodplain in Tanzania (fringe and middle positions) and an inland valley in Uganda (valley-fringe, midvalley and valley-bottom positions). We then calibrated and validated the Agricultural Production System Simulator (APSIM), evaluated the importance of external water table data as model input and assessed the relative effects of water and N stress on yield as affected by wetland type and field position. Yields of 3.2-9.2 Mg ha − 1 were attained in the floodplain and of 1.9-6.3 Mg ha − 1 in the inland valley, highlighting the substantial scope to boost yields beyond current regional means of around 2 Mg ha − 1 . The model estimated grain yields in both wetlands well within the experimental uncertainty during model validation (n = 12, r 2 = 0.76, RMSEa= 0.92 Mg ha − 1 in the floodplain; n = 18, r 2 = 0.71, RMSEa= 0.72 Mg ha − 1 in the inland valley). Results further emphasised the importance of external water table data for sound model performance as they evidently alleviated seasonal droughts. Simulated abiotic stress patterns additionally highlighted hydro-edaphic differences from field positioning within and between both wetlands. While low soil N was generally the main yield constraint, water stress was comparably more pronounced in the inland valley and supplemental irrigation thus more beneficial on yield. Hydro-edaphic field conditions favoured rice production in the floodplain's fringe with comparably lower N stress, while large spatial-temporal variabilities prevented a distinct delineation based on toposequential field positions in the inland valley.

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“…Rice cultivation can reduce soil salinity and increase fertility [11]. Salinity is higher and often occurs in the dry season [24]. Salinity is a barrier to global rice production that requires serious handling Guo et al, [25].…”

Section: Introductionmentioning

confidence: 99%

“…Moderate rice is sensitive to salinity [34]. In order to anticipate drought stress and salinity, Strategies to maintain food security need to be carried out, especially in overcoming the effects of drought and salinity [2], [12], [24], [25]. It is necessary to know the response of rice to drought and salinity stress in the vegetative phase in two rice varieties because the vegetative phase is a phase that is very susceptible to salinity stress.…”

Section: Introductionmentioning

confidence: 99%

Rice (Oryza sativa L.) response on increased drought and salinity in the vegetative phase

Ichsan

Erida

Hayati

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Environmental stress is a global threat to provide the world’s food. Drought and salinity are the main threats to agricultural land productivity. This is a challenge in implementing SDGs 2030 as well as an opportunity if we are able to use germplasm to overcome various environmental stresses. Research on 2 varieties of rice Inpari 42 agritan as a comparison variety and varieties Sigupai which is a local variety of Aceh originating from Abdya. This study used a 2x3x6 split plot design with 108 experimental units and 324 experimental pots. There is an interaction between varieties when salinity occurs and salinity level on the growth of rice plants in the vegetative phase and electrical conductivity in soil and water which shows different responses between the Inpari 42 Agritan variety and the Sigupai varieties. On the electrical conductivity of the Sigupai. variety, it was better able to reduce Ec at different levels of salinity and time of occurs in the vegetative phase. Meanwhile, Inpari 42 Agritan is more capable of increasing growth under conditions of increased salinity in the vegetative phase. The local variety Sigupai, the rate of growth reduction is also relatively low compared to that without salinity. This is an opportunity to deal with drought and salinity that can occur anytime and anywhere due to drought, water management and improper fertilization that can occur anywhere. It is a challenge to overcome drought and lowering salinity with the use of local varieties and appropriate agronomic practices.

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Options for increasing Boro rice production in the saline coastal zone of Bangladesh

Cited by 21 publications

References 29 publications

The impact of climate change, population growth and development on sustainable water security in Bangladesh to 2100

The impact of climate change, population growth and development on sustainable water security in Bangladesh to 2100

Assessing the effects of management and hydro-edaphic conditions on rice in contrasting East African wetlands using experimental and modelling approaches

Rice (Oryza sativa L.) response on increased drought and salinity in the vegetative phase

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