Soil nitrogen. VII.—correlations between measurements of nitrogen status of soils and nitroǵn % and nitroǵn content of crops

1963 ◽  
Vol 14 (4) ◽  
pp. 269-277 ◽  
Author(s):  
J. K. R. Gasser ◽  
R. J. B. Williams
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Status

Impacts of Bioinoculants Pseudomonas jesenii MP1 and Rhodococcus qingshengii S10107 on Chickpea (Cicer arietinum L.) Yield and Soil Nitrogen Status

Pedosphere ◽  
2019 ◽  
Vol 29 (3) ◽  
pp. 388-399 ◽  
Author(s):  
Divya JOSHI ◽  
Ramesh CHANDRA ◽  
Deep Chandra SUYAL ◽  
Saurabh KUMAR ◽  
Reeta GOEL
Keyword(s):  
Cicer Arietinum ◽  
Soil Nitrogen ◽  
Nitrogen Status ◽  
Cicer Arietinum L

Effects of soil nitrogen status and rate of inoculation on the establishment of populations of Bradyrhizobium japonicum and on the nodulation of soybeans

1989 ◽  
Vol 40 (4) ◽  
pp. 753
Author(s):  
J Brockwell ◽  
RR Gault ◽  
LJ Morthorpe ◽  
MB Peoples ◽  
GL Turner ◽  
...  
Keyword(s):  
Glycine Max ◽  
Soil Nitrogen ◽  
Bradyrhizobium Japonicum ◽  
Clay Soil ◽  
Mineral Nitrogen ◽  
Soil Mineral ◽  
Soil Mineral Nitrogen ◽  
Nitrogen Status ◽  
Mineral N ◽  
Glycine Max L

Soybeans (Glycine max [L.] Merrill cv. Forrest) were grown under irrigation on a well-structured grey clay soil, previously free of Bradyrhizobium japonicum and containing relatively high levels of mineral N, at Trangie, N.S.W. There were two soil pretreatments, pre-cropped (which had the effect of reducing the level of mineral nitrogen in the soil) and pre-fallowed, and four rates of inoculation (B. japonicum CB 1809 - nil, 0.01 X, 1.OX [=normal] and 100X).Mineral nitrogen (0-10 cm) initially was higher in pre-fallowed soil than in pre-cropped soil (37.6 v. 18.5 mg N per kg). Depletion of mineral nitrogen occurred more rapidly in pre-fallowed treatments, so that, 7 days after harvest, mineral-N in pre-cropped soil was significantly higher than in pre-fallowed soil (14.4 v. 10.6 mg per kg).With high levels of soil mineral nitrogen, colonization of seedling rhizospheres by rhizobia and plant nodulation were diminished. These effects were ameliorated but not eliminated by increased rates of inoculation. The development of the symbiosis was also impeded by lower rates of inoculation (0.01 X, 1.OX).

Fertility studies of pasture soils in the wet tropical coast of Queensland. 3. Basaltic soils

1972 ◽  
Vol 12 (54) ◽  
pp. 49 ◽  
Author(s):  
JK Teitzel ◽  
RC Bruce
Keyword(s):  
Plant Growth ◽  
Soil Nitrogen ◽  
Phosphorus Deficiency ◽  
Growth Responses ◽  
Nitrogen Status ◽  
Fertility Status ◽  
High Soil ◽  
Basaltic Soils ◽  
Tropical Coast

Results of thirteen investigations into the fertility status of fifteen basaltic soils in the wet tropical coast of Queensland are presented. Although farming experience has shown these soils to be among the most fertile in the area, a widespread phosphorus deficiency is recorded. Plant growth responses to molybdenum, sulphur and calcium also occurred. The molybdenum deficiency appears to be particularly important in older , pastures where the initailly high soil nitrogen status has been depleted.

IMPROVEMENT OF THE NITROGEN STATUS OF SOILS AND THE ORIGIN OF SOIL NITROGEN

Nature ◽  
1943 ◽  
Vol 151 (3838) ◽  
pp. 590-592 ◽  
Author(s):  
N. R. DHAR
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Status

Estimation of nitrogen fixation by four legumes in a dry monsoonal area of north-western Australia

1967 ◽  
Vol 7 (29) ◽  
pp. 518 ◽  
Author(s):  
R Wetselaar
Keyword(s):  
Nitrogen Fixation ◽  
Western Australia ◽  
Soil Nitrogen ◽  
Cyamopsis Tetragonoloba ◽  
Clay Loam ◽  
Nitrogen Status ◽  
Plant System ◽  
Stylosanthes Humilis ◽  
North Western

The amount of nitrogen fixed by the legumes Townsville lucerne (Stylosanthes humilis), guar (Cyamopsis tetragonoloba), cowpea (cv. Poona), and peanuts (cv. Natal common) on Tippera clay loam was determined in the field for three seasons of growth. The total amount added to the soil-plant system in the three seasons by the four legumes was respectively 196, 196, 240, and 111 lb nitrogen an acre. The results indicate that Townsville lucerne fixed annually 83 lb nitrogen an acre in the second and third season. Cowpea and peanuts fixed less in the second and third season because of an increase in available soil nitrogen. Only with guar and Townsville lucerne was the original nitrogen status of the soil maintained.

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