RELATIONSHIP OF YIELD AND TOTAL NITROGEN UPTAKE OF BRUSSELS SPROUTS PLANTS GROWN IN THE GREENHOUSE TO AVAILABLE SOIL NITROGEN

1969 ◽  
Vol 49 (3) ◽  
pp. 313-318 ◽  
Author(s):  
D. C. Munro
Keyword(s):  
Total Nitrogen ◽  
Soil Nitrogen ◽  
Nitrogen Uptake ◽  
Nitrate Nitrogen ◽  
Soil Samples ◽  
Moist Soil ◽  
Available Nitrogen ◽  
Air Drying ◽  
Brussels Sprouts ◽  
Relationship Of

Initial nitrate-nitrogen content of the soil gave a correlation coefficient (r) of 0.93 with yields and with total nitrogen uptake of Brussels sprouts plants (Brassica oleracea var. gemmifera DC., Jade Cross). Soil nitrogen extracted with 0.01 M NaHCO3 gave r values of 0.76 with yields and 0.75 with nitrogen uptake. Nitrate incubation results from leached, moist soil samples gave r values of 0.59 with yields and 0.56 with nitrogen uptake. However, air-drying of soil samples prior to leaching and incubation resulted in r values of only 0.15 and 0.11 with yields and nitrogen uptake, respectively. Available nitrogen determined by incubation without previous leaching of the soil samples gave high r values because of the influence of the initial nitrate nitrogen in the soil.

scholarly journals Observations on the effect of organic materila upon aggregation and nitrate-nitrogen content of soil

1952 ◽  
Vol 24 (3) ◽  
pp. 127-134
Author(s):  
Armi Kaila ◽  
Pertti Kivinen
Keyword(s):  
Nitrogen Content ◽  
Soil Nitrogen ◽  
Nitrate Nitrogen ◽  
Soil Samples ◽  
Mineral Nitrogen ◽  
Aggregation State ◽  
Water Stable Aggregates ◽  
Mineral Soils ◽  
Simultaneous Immobilization ◽  
Properties Of Soil

In the experiments reported above the effect of organic material upon the aggregation of soil particles and the simultaneous immobilization of mineral nitrogen by microorganisms were studied. The relative amount of water-stable aggregates larger than 0.5 mm in diameter was considered to indicate the aggregation state of the soil samples. Probably, somewhat different results were obtained if the crumb formation had been determined by some other method, but it is not sure that these would have been more reliable. Since the incubation of soil samples were performed under aerobic conditions, and all the samples were mineral soils, it seemed justifiable to take the nitrate-nitrogen content of the soil samples to characterize the amount of mineral nitrogen in them. On the basis of the results the general conclusion may be drawn that the more favourable the conditions are for the development of an active and large microflora in the soil, the more intensively the crumb formation and the immobilization of nitrogen takes place, but also the destruction of aggregates begins the more rapidlv. This appeared to be true with regard to the indigenous fertility of soil as well as to the fertilization. Liming, however, did not improve the conditions in these experiment, probably due to the rather slight acidity of the soil samples used. Under otherwise similar conditions the larger amount of straw produced larger amount of aggregates, but the differences in the nitrate-nitrogen content of soil in the presence of various amounts of straw were neglibigle. Generally, the degree of immobilization of soil nitrogen seemed largely to depend on the properties of soil and on other environmental conditions, and nitrogen applications, theoretically enough for the needs of microorganisms that decomposed the straw, could not always prevent an intensive absorption of soil nitrogen. The crumb formation appeared to need mere energy-yielding material than the immobilization of nitrogen, or the destruction of crumbs occurred more rapidly than the nitrification of microbiologically bound nitrogen.

Influence of growing various crops in five different fixed rotations on the changes in nitrate and total nitrogen content of soils

1985 ◽  
Vol 104 (3) ◽  
pp. 609-613 ◽  
Author(s):  
K. N. Sharma ◽  
A. L. Bhandari ◽  
M. L. Kapur ◽  
D. S. Rana
Keyword(s):  
Nitrogen Content ◽  
Total Nitrogen ◽  
Soil Nitrogen ◽  
Nitrate Nitrogen ◽  
Balance Sheet ◽  
Total Nitrogen Content ◽  
Soil N ◽  
Total N ◽  
Soil Layers ◽  
Total Soil N

SummaryThe results on the influence of various crops in five different fixed rotations on the ohanges in nitrate and total N content of soils are reported. Groundnut contributed largely to the accumulation of nitrate nitrogen in the soil profile (to a depth of 120 cm). Bajra fodder exhausted the soil nitrogen reserve to a great extent. Wheat and maize, in a rotation, reduced nitrate leaching to deeper soil layers. Summer moong also left a large amount of unabsorbed nitrate in the profile. Total nitrogen content of the soil decreased after the harvest of cereals. Maximum depletion occurred after the harvest of bajra crop. Potato (a crop which received a heavy dressing of N fertilizer) and legumes contributed to the soil N reserve. A balance sheet of N indicated net gains of total soil N in four of the five cropping sequences. A net loss of 75 kg N/ha was observed in bajra fodder-potato-wheat rotation.

EFFECT OF AVAILABLE SOIL NITROGEN ON YIELDS AND RESPONSE OF BRUSSELS SPROUTS TO APPLIED NITROGEN IN THE FIELD

1970 ◽  
Vol 50 (3) ◽  
pp. 261-266 ◽  
Author(s):  
D. C. MUNRO ◽  
J. A. CUTCLIFFE
Keyword(s):  
Soil Nitrogen ◽  
Leaf Tissue ◽  
Yield Potential ◽  
Soil Tests ◽  
Available Nitrogen ◽  
Brussels Sprouts ◽  
Tissue Nitrogen ◽  
Total Soil Nitrogen ◽  
Applied Nitrogen

Determination of nitrate nitrogen in the soil at transplanting time was the best soil test for prediction of yield potential and relative response of Brussels sprouts (Brassica oleracea var. gemmifera DC, Jade Cross) to applied nitrogen. Actual fertilizer nitrogen requirement of a soil could not be predicted from soil tests. Total soil nitrogen was the best alternative to original soil nitrate for prediction of yield potential of the soil. Total nitrogen in leaf tissue from maximum-yielding plots averaged 5.6%. Approximately 5.2% tissue nitrogen was necessary for good yields. Concentration of nitrogen in leaf tissue from control plots could not be predicted from soil tests for available nitrogen. Over a period of three years at four locations per year, 67 kg nitrogen per ha applied in bands was adequate for maximum yields of Brussels sprouts at most locations.

Soil Nitrogen Forms and Availability in Paddy Soil under Different Fertilization Methods

2014 ◽  
Vol 1073-1076 ◽  
pp. 643-647
Author(s):  
Ji Wang ◽  
Min Jie Fu ◽  
Yun Jiang Liang ◽  
Ze Yu Guan ◽  
Jiu Dao Li
Keyword(s):  
Amino Acid ◽  
Path Analysis ◽  
Nitrogen Content ◽  
Total Nitrogen ◽  
Soil Nitrogen ◽  
Organic Nitrogen ◽  
Paddy Fields ◽  
Available Nitrogen ◽  
Amino Acid Nitrogen ◽  
Hydrolyzable Nitrogen

To reveal the characteristics of soil organic nitrogen components under different long-term fertilization methods in paddy fields, 7 typical paddy fields in the Yanbian Korean Autonomous Prefecture of Jilin Province were selected, and soil samples were collected from 0 to 10 cm and 10 to 20 cm. The samples were analyzed for available nitrogen, total nitrogen and inorganic nitrogen content and each component of organic nitrogen. The results showed that soil nitrogen decreased with increasing soil depth in the soil profile. Different fertilization methods had a significant or greater effect on the available nitrogen, total nitrogen and organic nitrogen in 0 to 10 cm soil, and it had a significant effect on the total nitrogen content in 10 to 20 cm soil. Combined applications of organic and inorganic fertilizer was beneficial for improving available soil nitrogen. Applying organic fertilizer was beneficial for the accumulation of total nitrogen and organic nitrogen. Organic nitrogen was a major part of soil nitrogen. In terms of directly affecting the path analysis, the effects of ammonia sugar nitrogen, acid-hydrolyzable unknown nitrogen and non-hydrolyzable nitrogen on available nitrogen are significant. A small negative correlation was shown between amino acid nitrogen and available nitrogen. Amino acid nitrogen indirectly affected the available nitrogen through other components. In terms of the general effect of the path analysis, the influence of non-hydrolyzable nitrogen to available nitrogen was the highest. An important factor to consider in relation to reasonable fertilization is that promoting non-hydrolyzable nitrogen and unknown acid-hydrolyzable nitrogen transformed into available nitrogen and accumulated available nitrogen.

scholarly journals RELATIONSHIP OF NITRATE ACCUMULATION TO YIELD RESPONSE OF WHEAT IN SOME SASKATCHEWAN SOILS

1957 ◽  
Vol 37 (2) ◽  
pp. 84-88 ◽  
Author(s):  
F. D. Cook ◽  
F. G. Warder ◽  
J. L. Doughty
Keyword(s):  
Correlation Coefficient ◽  
Nitrogen Uptake ◽  
Soil Samples ◽  
Yield Response ◽  
Nitrate Accumulation ◽  
Laboratory Procedure ◽  
Greenhouse Experiments ◽  
Relationship Of

The capacity of Saskatchewan soils to accumulate nitrate, as determined by a laboratory procedure, was investigated as a method for evaluating the response of wheat to nitrogenous fertilizers. The correlation coefficient between the field yield ratios (which are a measure of the response to nitrogen) and nitrate accumulation for 31 stubble fields was 0.846** and for 30 fallow-soils was 0.830**. Greenhouse experiments with soil samples from 31 stubble fields showed a high correlation (0.874**) between nitrate accumulation and nitrogen uptake by wheat plants during a 30-day growth period.It is considered that a significant increase from the application of nitrogenous fertilizers can be expected when the nitrate accumulation value is below 50 p.p.m. N in soil from stubble fields or 40 p.p.m. N in fallowed soils.

Changes in soil nitrogen following different establishment procedures for Townsville stylo on a solodic soil in north-eastern Queensland

1972 ◽  
Vol 12 (56) ◽  
pp. 274 ◽  
Author(s):  
BJ Crack
Keyword(s):  
Total Nitrogen ◽  
Soil Nitrogen ◽  
Nitrate Nitrogen ◽  
Fertilizer Application ◽  
Soil Nitrate ◽  
Soil Total Nitrogen ◽  
North East ◽  
Stylosanthes Humilis ◽  
North Eastern ◽  
Townsville Stylo

The effect of the legume Townsville stylo (Stylosanthes humilis) on soil nitrogen status was studied under mown plots with different conditions of establishment and fertilizer application on a solodic soil in north- east Queensland. Increase in soil total nitrogen 0-7.5 cm of 180 kg N per ha and total nitrogen accession (plant and soil) of 460 kg N per ha was measured over a four year period where the legume was sown into existing spear grass and fertilized with superphosphate at 375 kg per ha per year. Soil nitrogen increases did not occur until the pasture was legume dominant and main increases took place where superphosphate was applied. Under these conditions there was also a dry season accumulation of soil nitrate nitrogen.

EFFECT OF VARIOUS PERIODS OF SEED-DOWN TO ALFALFA AND BROMEGRASS ON SOIL NITROGEN

1971 ◽  
Vol 51 (1) ◽  
pp. 65-73 ◽  
Author(s):  
W. S. FERGUSON ◽  
B. J. GORBY
Keyword(s):  
Total Nitrogen ◽  
Soil Nitrogen ◽  
Nitrogen Loss ◽  
Nitrogen Absorption ◽  
Aerobic Incubation ◽  
Available Nitrogen ◽  
Plant Nitrogen ◽  
Acid Hydrolysate ◽  
Total Soil ◽  
Total Soil Nitrogen

Total soil nitrogen decreased substantially during the 12-year period (1954 to 1965) in a coarse-textured Chernozemic soil located at Brandon, Manitoba. The amount of nitrogen loss was related to cropping practices. The loss was 24% when the soils were continuously summerfallowed and 16% when the soil was producing alfalfa, during eight of the 12 years. Other perennial crops (bromegrass, and a mixture of bromegrass and alfalfa) had similar effects on total nitrogen to those of alfalfa. The loss of soil nitrogen was inversely proportional to the intensity of cropping during the 12-year period. The availability of soil nitrogen, as assessed for wheat production during the four-year period 1966 to 1969, was directly proportional to the intensity of cropping during 1954 to 1965, and was increased by alfalfa production. The total nitrogen absorbed by three crops of wheat was closely related to the amount of nitrate nitrogen in the soil to a depth of 122 cm at the beginning of the three years of production. It was not related to total soil nitrogen. The protein content of the grain was related to intensity of cropping and alfalfa production. The change in the amount of nitrogen in the amino acid, hexosamine, ammonia, and unidentified fractions of an acid hydrolysate of these soils was proportional to the change in total soil nitrogen. It did not appear to be related to changes in available nitrogen as measured by soil nitrate, plant nitrogen absorption or nitrate released on aerobic incubation.

Distribution and relationship of soil nitrogen and flue-cured tobacco nicotine content in Enshi tobacco fields

2009 ◽  
Vol 17 (5) ◽  
pp. 880-884
Author(s):  
Zi-Cheng XU ◽  
Yan GUO ◽  
Hui-Fang SHAO ◽  
Qing-Wen BI ◽  
Jian WANG ◽  
...  
Keyword(s):  
Soil Nitrogen ◽  
Nicotine Content ◽  
Relationship Of

Soil Nitrogen Movement under Sustainable Vegetable Production Systems

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 494f-495 ◽  
Author(s):  
Amy M. Johnson ◽  
Greg D. Hoyt
Keyword(s):  
Pest Management ◽  
Soil Nitrogen ◽  
Conservation Tillage ◽  
Management Strategies ◽  
Conventional Tillage ◽  
Plant Diseases ◽  
Vegetable Production ◽  
Beneficial Arthropods ◽  
Weed Species ◽  
Available Nitrogen

An experiment was established to determine the effect of different tillage practices, vegetable crop rotations, and pest management strategies on crop yield, plant diseases, pest and beneficial arthropods, weed species changes over time, and soil environmental consequences. This poster describes nitrogen movement from the various treatments over a 3-year rotation. The treatments are: 1) conventional tillage with chemically based IPM; 2) conventional tillage with biologically based IPM; 3) conservation tillage with chemically based IPM; 4) conservation tillage with biologically based IPM; and 5) conventional tillage with no fertilizer or pest management. Mid-season soil analyses with depth showed chemical-fertilized plowed and conservation-tilled treatments with more soil available nitrogen at most depths compared to the biological-based IPM systems (soybean meal was used as a nitrogen source). However, the biological-based systems did supply enough soil nitrogen to produce similar yield results as the chemical-based systems. Less soil nitrate was measured in the 30- to 90-cm depths at harvest from the biological-based systems than chemical-based systems. Conservation-tilled systems had greater nitrate with depth compared to conventional-tilled systems.

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