Interactive effects of sowing date and nitrogen fertilizer on water and nitrogen use efficiency in millet cultivars under drought stress

Nematpour, Afsaneh; Eshghizadeh, Hamid Reza; Zahedi, Morteza; Gheysari, Mahdi

doi:10.1080/01904167.2019.1659351

Cited by 10 publications

(2 citation statements)

References 37 publications

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“…The highest total N uptake and N recovery in the earlier sowing possibly related to less losses of N due to favourable soil factors such as higher SWC and lower salinity while delayed sowing was associated with reduced soil water and increase soil salinity. The reduced N recovery and use efficiency in the delayed sowing might be due to the limited availability of N and lowering the potential of N uptake by the crops (Nematpour et al., 2019; Rodrigues et al., 2019). LCCI significantly increased with the increased rate of applied N but with the similar rate of applied N, LCCI was comparatively higher in the earlier sowing and steadily declined with the delayed of sowing which can be attributed to soil water deficit (Figure 3a,b).…”

Section: Discussionmentioning

confidence: 99%

“…The reduced N recovery and use efficiency in the delayed sowing might be due to the limited availability of N and lowering the potential of N uptake by the crops (Nematpour et al, 2019;Rodrigues et al, 2019). LCCI significantly increased with the increased rate of applied N but with the similar rate of applied N, LCCI was comparatively higher in the earlier sowing and steadily declined with the delayed of sowing which can be attributed to soil water deficit (Figure 3a,b).…”

Section: Effect Of Sowing Date On Response Of Seed Yield To Nmentioning

confidence: 99%

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Early sowing increases nitrogen use efficiency of sunflower in wet clay soils

et al. 2023

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Early sowing increases yield potential of sunflower on wet, saline clay soils but the effects on nitrogen (N) requirements have not been determined. In a 2-year study on a drainable field with wet, saline clay soils in southwestern coastal Bangladesh, we investigated nitrogen use efficiency (NUE) and yield responses to N rates (0, 60, 90, 120, 150, 180 and 210 kg ha −1 ) for zero-till sunflower cv. Hysun-33 sown from November 30 (early) to December 30 (late). Early sowing produced highest seed yield (3.59 ton ha −1 ) and oil yield (1400 kg ha −1 ) at 150 kg N ha −1 . Delayed sowing (December 15-December 30) reduced seed and oil yields by 4%-15% and 7%-18%, respectively. In late sowing, crops suffered from multiple stresses (soil-water deficit, salinity, and heat), which decreased yields. The N fertilizer requirement in late sowing was higher (180 kg ha −1 ) to achieve maximum yield, yet the yield was lower than from earlier sowing. Compared with nil N supply, the rates of 60-150 kg N ha −1 increased seed and oil yields of the early-sown sunflower by 1.3-3.3 times and 1.2-2.9 times, respectively, whereas the rates of 180-210 kg N ha −1 decreased seed and oil yields by 2%-5% and 7%-14%, respectively. Higher net profit (US$764) was also achieved from earlier sowing with 150 kg N ha −1 . We conclude that under wet and saline clay soils, higher sunflower yield in early sowing is attributable to lower stress that increased NUE and decreased N requirement.

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Section: Discussionmentioning

confidence: 99%

Section: Effect Of Sowing Date On Response Of Seed Yield To Nmentioning

confidence: 99%