A15N tracer study to compare nitrogen supply by Azolla and ammonium sulphate to IR8 rice plants grown under flooded conditions

Three experiments were conducted to compare the attraction and repulsion of second-stage juveniles (J2) of the root-knot nematode, Meloidogyne graminicola, to rice plants supplied with different forms of nitrogen. The rice plants were hydroponically grown in a full nutrient solution containing different concentrations (0.1 or 10.0 mM) of nitrate (NO3−) or forms of nitrogen supply (2.85 mM calcium nitrate (Ca(NO3)2), ammonium nitrate (NH4NO3) or ammonium chloride (NH4Cl)) for 2 weeks. Five rice plants were placed with their roots in one corner of a Perspex X or Y-chamber partly filled with agar and J2 were inoculated onto the chambers. The data show that J2 of M. graminicola were significantly attracted towards the roots of rice plants grown in hydroponics containing 0.1 mM NO3− and 2.85 mM Ca(NO3)2, but repelled by 10.0 mM NO3−, 2.85 mM NH4NO3 and NH4Cl. The results suggest that the application of ammonia-based nitrogen fertiliser to the rice nursery bed may interfere with nematode attraction and thus reduce invasion, and the application of chemical nitrification inhibitors to rice nursery beds may decrease nematode invasion.

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The Effect of Amount on Release of NH4 and NO3-N in the Soil at two Harvests of Nitrogen through five BGA Species and N-fertilizers in Rice Growing Plant

Bangladesh Journal of Scientific and Industrial Research ◽

10.3329/bjsir.v43i3.1160 ◽

1970 ◽

Vol 43 (3) ◽

pp. 427-432

Author(s):

M Didar-ul-Alam

Keyword(s):

Ammonium Sulphate ◽

Mineral N ◽

Rice Plants ◽

N Fertilizers ◽

Bluegreen Algae

Among all treatments pots without growing rice plants containing N. muscorum showed the highest amount of mineral-N and P. boryanum was the lowest. On the contrary, treatments with rice plants containing all BGA species the amounts of NH4-N and NO3-N remaining were more or less equal to the fertilizers treatments. Among BGA species and fertilizers the highest amount of NH4-N and NO3-N were found at the 90 mg N pot-1 with urea and ammonium sulphate and A. doliolum gave the highest amount in comparison to other four species.Key words: Mineral-N, Nitrification, Denitrificatoin, Bluegreen algae, Rice yield.DOI = 10.3329/bjsir.v43i3.1160Bangladesh J. Sci. Ind. Res. 43(3), 427-432, 2008

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Aquaporin Expression and Water Transport Pathways inside Leaves Are Affected by Nitrogen Supply through Transpiration in Rice Plants

International Journal of Molecular Sciences ◽

10.3390/ijms19010256 ◽

2018 ◽

Vol 19 (1) ◽

pp. 256 ◽

Cited By ~ 8

Author(s):

Lei Ding ◽

Yingrui Li ◽

Limin Gao ◽

Zhifeng Lu ◽

Min Wang ◽

...

Keyword(s):

Water Transport ◽

Nitrogen Supply ◽

Transport Pathways ◽

Rice Plants

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Water absorption is affected by the nitrogen supply to rice plants

Plant and Soil ◽

10.1007/s11104-015-2603-5 ◽

2015 ◽

Vol 396 (1-2) ◽

pp. 397-410 ◽

Cited By ~ 27

Author(s):

Binbin Ren ◽

Min Wang ◽

Yupei Chen ◽

Guomei Sun ◽

Yong Li ◽

...

Keyword(s):

Water Absorption ◽

Nitrogen Supply ◽

Rice Plants

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The influence of temperature and available nitrogen supply on the growth of pasture in the spring

The Journal of Agricultural Science ◽

10.1017/s0021859600023091 ◽

1936 ◽

Vol 26 (4) ◽

pp. 620-635 ◽

Cited By ~ 28

Author(s):

G. E. Blackman

Keyword(s):

Ammonium Sulphate ◽

Nitrogen Supply ◽

Available Nitrogen ◽

Influence Of Temperature ◽

Grazing Season ◽

Grazed Pasture

In recent years a number of workers have investigated the influence of nitrogenous fertilizers on the growth of pastures. In some cases they have claimed that such fertilizers lengthen the grazing season by producing grass earlier than normal in the spring, but no research has been carried out on the factors controlling this spring growth. Watson et al. (15) in a study of the influence of nitrogenous fertilizers on the seasons’ yield of rotationally grazed pasture at Jealott's Hill, showed that in 1 year ammonium sulphate applied at the rate of 23·2 lb. nitrogen per acre in March enabled the treated plots to be grazed some 14 days earlier than the control. Richardson(13) found that 44·8 lb. nitrogen per acre gave marked increases in yield. Woodman & Underwood(16), however, claimed that ammonium sulphate (14·5 lb. nitrogen per acre) produced no strikingly higher yields.

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