Serial Change of Nitrogen Uptake after Topdressing for Rice Plants

2005 ◽  
Vol 74 (3) ◽  
pp. 285-290 ◽  
Author(s):  
Takeo Sakaigaichi ◽  
Shigenori Morita ◽  
Jun Abe ◽  
Takeshi Yamaguchi
2017 ◽  
Vol 15 (10) ◽  
pp. 1273-1283 ◽  
Author(s):  
Jingguang Chen ◽  
Xiaoru Fan ◽  
Kaiyun Qian ◽  
Yong Zhang ◽  
Miaoquan Song ◽  
...  

1979 ◽  
Vol 27 (1) ◽  
pp. 99-110
Author(s):  
S.B. Rehatta ◽  
W. Dijkshoorn ◽  
J.E.M. Lampe

In a pot trial in the Netherlands with sunflower and an upland rice cv., multiple-compartment systems with N and water supplied from different compartments were used to demonstrate that plant availability of N from a dry soil horizon was low. The separation of N and water in different soil horizons along with a decreasing input of irrigation water reduced the uptake of N more than the plant DM production was reduced by the decrease in the amount of water supplied to the plants. (Abstract retrieved from CAB Abstracts by CABI’s permission)


Agropedology ◽  
2019 ◽  
Vol 28 (2) ◽  
Author(s):  
V. N. Patel ◽  
◽  
K. C. Patel ◽  
A. S. Bhanvadia ◽  
D. Kumar ◽  
...  

Silicon is considered an agronomically essential element for sustainable rice production (Savant et al. 1997a) and reported that adequate supply of Si increased the number of panicles, the number of grains per panicle, the percentage ripening and the light-receiving posture of rice plants and also improved the availability and utilization of P by rice plants. Si is absorbed as PAS by rice plants in far larger quantities than the macro nutrients, 108 % greater than nitrogen uptake. A rice crop producing a yield of 5000 kg ha-1 removes 230-470 kg Si ha-1 and it has the potential to raise the optimum rate of N (Elawad and Green 1979). It develops resistance and/or tolerance to abiotic stresses and could tolerate Fe, Al and Mn toxicities, and the increased mechanical strength of the culm helps reduce crop lodging (Takahashi 1995).


1969 ◽  
Vol 68 (4) ◽  
pp. 387-394
Author(s):  
Servando Silva ◽  
José Vicente Chandler

Rice fertilized with 50, 100 and 150 kg of N/ha produced 5.0, 6.9 and 7.8 t/ha, respectively, of dry rough rice. Maximum uptake of N was 90, 124, and 148 kg/ha at the respective rates. At the rate of 100 kg of N/ha, uptake of N by the entire rice plant, including roots, was about 20 kg/ha during the first 4 weeks, 60 kg/ha during the following 2 weeks, and 40 kg/ha during the remainder of the cropping period. The N levels had no residual effects on a subsequent rice crop. About 66% of the first 50 kg/ha increment of N applied and 50% of the second increment were recovered in the rice plants in this experiment conducted in lysimeter tanks, with no losses by leaching.


2001 ◽  
Vol 120 (5) ◽  
pp. A558-A558
Author(s):  
T TERATANI ◽  
S SHIINA ◽  
S OBI ◽  
K HAMAMURA ◽  
Y KOIKE ◽  
...  

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