Forgoing the fallow in Bangladesh's stress-prone coastal deltaic environments: Effect of sowing date, nitrogen, and genotype on wheat yield in farmers’ fields

Krupnik, Timothy J.; Ahmed, Zia; Timsina, Jagadish; Shahjahan, Md.; Kurishi, A.S.M. Alanuzzaman; Miah, A. Ahad; Rahman, Basri; Gathala, Mahesh K.; McDonald, Andrew J.

doi:10.1016/j.fcr.2014.09.019

Cited by 57 publications

(57 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Simulation results, with long term historic weather, indicated that maximum leaf area index (LAImax) increased with the increase in N rate and decrease with temperature rise (Figure 2 ) were calculated and presented in Table 4 These findings were at parity with the findings of Krupnik et al [21] who obtained higher agronomic N use efficiency in wheat in Bangladesh with lower N rates.…”

Section: Effect Of Temperature Rise and Variable Nitrogen Inputs On Gsupporting

confidence: 77%

Simulating Nitrogen and Irrigation Effects on Wheat Production in Bangladesh under Changing Climate

Sen¹,

Choudhury²,

Akhter³

et al. 2017

AJPS

View full text Add to dashboard Cite

Climate change impacts are visible in Bangladesh which requires adoption of judicious crop management practices for sustainable agriculture. Crop simulation models are effective in this regard and can be used for optimizing water and nitrogen inputs for maximization of wheat yields. Two field studies were conducted at Bangladesh Agricultural Research Institute (BARI) for evaluating the effect of increased temperature on wheat production under variable water and N rates, through the use of DSSAT v4.6 model. Thirty years historic weather data and BARI Gom-26 wheat-cultivar coefficients, as generated through use of GLUE of DSSAT model, were used for evaluating the impact of temperature rise with variable rates of irrigation water and nitrogen. The effects of four levels of nitrogen (0, 40, 80 and 120 kg ha ) and four irrigation levels [0 (no irrigation), 1, 2 and 3] on wheat yield were evaluated under 0˚C, 1˚C, 2˚C and 3˚C rise in temperature. Simulation results indicated that wheat yield increased with increase in nitrogen application rate, but decreased with the temperature rise. Crop growing duration was reduced by about five days for each degree rise in temperature, irrespective of levels of irrigation water and nitrogen-rates. In general, there was yield reduction of 8.13, 16.77 and 24.97 % with increased temperature of 1˚C, 2˚C and 3˚C, respectively, when compared with no temperature rise treatment. For interaction of temperature rise-N dose, the magnitude of yield decline under temperature rise was higher with increased dose of N. Agronomic N use efficiency at different N rates and Simulation results indicated increase in wheat yield with higher levels of irrigation water, and interaction of irrigation level with temperature rise was significant. Irrigation use efficiency decreases with the increase in temperature rise. From the present study, it was seen that the interaction of temperature rise with varying levels of N and irrigation water was significant, and there is a need to design the appropriate inputs' management, as the adaptation strategy, to sustain the wheat yield under climate change situation.

show abstract

Section: Effect Of Temperature Rise and Variable Nitrogen Inputs On Gsupporting

confidence: 77%

Simulating Nitrogen and Irrigation Effects on Wheat Production in Bangladesh under Changing Climate

Sen¹,

Choudhury²,

Akhter³

et al. 2017

AJPS

View full text Add to dashboard Cite

show abstract

“…Within each field studied, farmers imposed different nitrogen (N) rates and trialed two new genotypes in comparison to a traditionally grown local check. In contrast to northern Bangladesh, where optimal wheat sowing time is November 15, Krupnik et al (2015) recommended sowing around mid-December in southern Bangladesh because of the late land availability following the harvesting of long-duration rice varieties and prolonged monsoon-season flooding. We consequently chose 15 December as the mid-point for sowing, and grouped four farmers as early-(before December 15) and late-(after December 15) sowers in each environment.…”

Section: Research Design and Managementmentioning

confidence: 93%

“…However, it is also sensitive to high temperatures from anthesis to maturity (Mondal et al, 2013). Terminal heat stress is more pronounced when farmers plant late, a common occurrence given the predominant use of long-duration monsoon season rice varieties and late vacating floodwaters, both of which delay wheat sowing in this region (Krupnik et al, 2015). Farmers' lack of familiarity with wheat cultivation also affects yield, although the relative contribution of these factors to yield remains poorly understood.…”

Section: Introductionmentioning

confidence: 99%

“…Poulton (2011) estimated that up to 0.8 M ha of the country's southern coast is fallowed during the rabi season, and that this land could be reliably planted with wheat. Farmers however grapple with myriad production challenges including late vacating monsoon floodwaters that delay planting, heat stress, and soil salinity, which in combination prevent reaching attainable yield, which is estimated at 4.5 t ha −1 (Krupnik et al, 2015). Wheat is moderately tolerant of soil salinity and can withstand levels up to 4-6 dS m −1 before yields decline (Chauhan et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…In both Bangladesh and South Asia, wheat is widely grown during the November-April dry 'rabi' (winter) season, following monsoon season 'aman' rice crop (Krupnik et al, 2015;Timsina and Connor, 2001). In Bangladesh, wheat is mostly grown in the north, where environmental stresses are limited (Hossain and Silva, 2012).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Untangling crop management and environmental influences on wheat yield variability in Bangladesh: An application of non-parametric approaches

Krupnik

Ahmed

Timsina

et al. 2015

Agricultural Systems

Self Cite

View full text Add to dashboard Cite

Effect of slow‐release nitrogen on the nitrogen availability in an andisol and the critical nitrogen concentration in wheat

Clunes

Pinochet

2020

Agronomy Journal

View full text Add to dashboard Cite

The use of coated fertilizers and the concept of the critical N dilution curve are alternatives capable of improving the production efficiency of wheat (Triticum aestivum L.) crops in agro-ecosystems. The objectives of this work were to evaluate the effect of a slow release urea-coated fertilizer on (i) the production of wheat's shoot biomass at the anthesis stage, (ii) the concentration of N in the shoot biomass, and (iii) the N availability in the Andisol. Two fertilizers: urea and urea-coated were evaluated using four increasing N rates and a control treatment (without fertilization), in three application strategies, during two growing seasons (late sowing [S1] and early sowing [S2]). Samples of shoot biomass and soil (0-20-cm depths) were collected at five wheat growth stages (Z21, Z31, Z39, Z45, Z69 on the Zadoks scale). The average production of shoot biomass was 10.3 t dry matter (DM) ha -1 for S2 and 7.9 t DM ha -1 for S1 and N concentrations was between 1.0-3.0%. When using a coated urea fertilizer in this Valdivian agro-ecosystem, no statistical differences (P < .05) in shoot biomass or wheat N concentrations were found at anthesis (Z69). Differences were principally between seasons. We therefore proposed a new adjustment to the dilution N curve, with a value concentration critical, N c start of 3.80%, and 4.15%, for S1 and S2, respectively. Use demand parameters such as N c adjusted to the agro-ecosystem for wheat crop, allows to rationalize the fertilization according to inorganic N available from the soil.Abbreviations: AS, all of the fertilizer was applied at sowing; AT, all of the fertilizer was applied at the end of tillering; CU, Nutrisphere-Urea; DM, dry matter; GDD, growing degree days; N c , critical nitrogen concentration; NNI, nitrogen nutrition index; S1, season 1; S2, season 2; SA, split application with one-third applied at sowing and two-thirds at the end of tillering; U, urea.

show abstract

Forgoing the fallow in Bangladesh's stress-prone coastal deltaic environments: Effect of sowing date, nitrogen, and genotype on wheat yield in farmers’ fields

Cited by 57 publications

References 25 publications

Simulating Nitrogen and Irrigation Effects on Wheat Production in Bangladesh under Changing Climate

Simulating Nitrogen and Irrigation Effects on Wheat Production in Bangladesh under Changing Climate

Untangling crop management and environmental influences on wheat yield variability in Bangladesh: An application of non-parametric approaches

Effect of slow‐release nitrogen on the nitrogen availability in an andisol and the critical nitrogen concentration in wheat

Contact Info

Product

Resources

About