Temporal origin of nitrogen in the grain of irrigated rice in the dry season: the outcome of uptake, cycling, senescence and competition studied using a -point placement technique

Sheehy, J. E.; Mnzava, M.; Cassman, Kenneth G.; Mitchell, Peter; Pablico, P. P.; Robles, R. P.; Samonte, H. P.; Lales, J. S.; Ferrer, A.

doi:10.1016/j.fcr.2004.02.019

Cited by 28 publications

(37 citation statements)

References 18 publications

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“…The percentage of 15 N recovery by plants without inoculation (Table 2) ranged from 14% to 22% depending on the year. N-fertilizer recovery by plants was low but similar to that reported for other ricefields (De Datta et al 1987;Sheehy et al 2004;FernandezValiente et al 2000).…”

Section: Resultssupporting

confidence: 85%

Cyanobacterial inoculation and nitrogen fertilization in rice

Irisarri

Gonnet

Deambrosi³

et al. 2006

World J Microbiol Biotechnol

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During three rice-growing seasons in Uruguay, field experiments were conducted to study the contribution of cyanobacterial inoculation and chemical N fertilization to rice production. Neither grain yield nor fertilizer recovery by the plant were affected by inoculation with native cyanobacterial isolates. A low fertilizer use efficiency (around 20%) was observed when labelled (NH 4 ) 2 SO 4 was applied at sowing. Recovery of applied 15 N by the soil-plant system was 50%. Inoculation did not modify 15 N uptake by the plant when the fertilizer was three-split applied either. The total N-fertilizer recovery was higher when the fertilizer was split than when applied in a single dose. Plant N-fertilizer uptake was higher when the fertilizer was applied at tillering. Uptake of 15 N from cyanobacteria by rice was studied in a greenhouse pots experiment without chemical nitrogen addition. Recovery of 15 N from labelled cyanobacteria by rice in greenhouse growth conditions was similar to that of partial recovery of (NH 4 ) 2 SO 4 applied at sowing in the field. Cyanobacterial N mineralization under controlled conditions was fast as cyanobacterial N was detected in plants after 25 days. Moreover 40 days after inoculation non-planted and inoculated soil had more inorganic N than the noninoculated one.

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Section: Resultssupporting

confidence: 85%

Cyanobacterial inoculation and nitrogen fertilization in rice

Irisarri

Gonnet

Deambrosi³

et al. 2006

World J Microbiol Biotechnol

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“…4b). N accumulated in panicles has been reported to be composed of N absorbed at all growth stages (Oritani and Yoshida, 1984;Mae, 1986;Sheehy et al, 2004), and the percentage shown here is similar to those obtained in previous studies (Mae, 1986;Sheehy et al, 2004). However, the details of the progress of N accumulation in panicles and the origin of panicle N for Takanari were different from those for Nipponbare (Figs.…”

Section: Discussionsupporting

confidence: 77%

“…Since Oryza sativa generally has perennial capability (Sakagami et al, 1999a;1999b), the increase in the 15 N fraction in stems is probably for the growth of ratoons. In the short term, newly absorbed N is distributed among plant organs depending on their N demand (Sheehy et al, 2004). The difference in the change in 15 N distribution at 10 days after its application suggested that the decrease in the N sink activity of panicles and the increase in that of stems began earlier in Nipponbare than in Takanari.…”

Section: Discussionmentioning

confidence: 99%

“…1b, 4a). Since N is remobilized from leaves to panicles to meet the difference between the N demand in panicles and its supply through the roots during grain filling (Wada and Wada, 1991;Sheehy et al, 2004), N partitioning is mostly determined by the balance between the N demand in panicles and the N uptake by plants. Therefore, the difference in N allocation between Takanari and Nipponbare in this study suggests that the difference in N demand in panicles would be larger than that in N uptake.…”

Section: Discussionmentioning

confidence: 99%

“…To investigate the distribution and remobilization of N absorbed at different growth stages to the plant organs, we need to use 15 N-labeled N ( 15 N) (Kichey et al, 2007). It has been shown that a large fraction of 15 N applied at heading is distributed to panicles at harvest (Wada et al, 1973;Arai and Kono, 1980;Sheehy et al, 2004). However, the differences in the partitioning of N absorbed during the ripening period between high-yielding varieties and standard varieties have not been investigated.…”

mentioning

confidence: 99%

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Contribution of Nitrogen Absorbed during Ripening Period to Grain Filling in a High-Yielding Rice Variety, Takanari

Ida

Ohsugi

Sasaki

et al. 2009

Plant Production Science

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Nitrogen Translocation in Wheat Plants Under Soil Water Deficit

Wang

2006

Plant Soil

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Accumulation and translocation of nitrogen (N) in the vegetative organs and grains of winter wheat (Triticum aestivum L.) are important processes in determining yield and quality. The present study was conducted to compare the effects of water deficit and cultivars (cv. Lumai 21 and Jinan 17) on N translocation from vegetative organs to grains in a mobile rain-shelter using 15 N-labeled ammonium sulfate fertilizer. The N translocation amounts (defined as the difference between the N amount at anthesis and the N amount at maturity for a vegetative organ) in leaves were greatest for the two cultivars, followed by glumes, stems, and sheaths, respectively. The N translocation ratio (defined as the ratio of the translocation amount to N amount at anthesis) in total above-ground parts were greater for Lumai 21 (0.65 g g )1 DW) than for Jinan 17 (0.60 g g )1 DW), and Lumai 21 plants had a higher N translocation ratio for the N derived from fertilizers. The N contribution (defined as the ratio of the translocation amount to grain N amount) of total vegetative parts aboveground to grain N ranged from 0.50 to 0.77 g g )1 DW, and that of the leaf was the greatest. The results showed that water deficit remarkably increased the N translocation ratio derived from soil and the contributions of N in various vegetative organs to grain N. It is suggested that water deficit would weaken the availability of fertilizer N but enhance the remobilization of prestored N to the grains.

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Temporal origin of nitrogen in the grain of irrigated rice in the dry season: the outcome of uptake, cycling, senescence and competition studied using a -point placement technique

Cited by 28 publications

References 18 publications

Cyanobacterial inoculation and nitrogen fertilization in rice

Cyanobacterial inoculation and nitrogen fertilization in rice

Contribution of Nitrogen Absorbed during Ripening Period to Grain Filling in a High-Yielding Rice Variety, Takanari

Nitrogen Translocation in Wheat Plants Under Soil Water Deficit

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