Effects of microbial inoculation on enzyme activity, available nitrogen content, and bacterial succession during pig manure composting

The nitrogen content of oats depends chiefly on the nitrogen content (1·4–3·9%) of the kernel and the kernel content (64–81%) of the oats, the husk containing only 3–10% of the total nitrogen in the grain.Varietal differences are significant but small in comparison with the overall variability: they reach 0·3% nitrogen in a few cases. Variation between random samples is largely due to soil differences, with region and harvest year responsible for smaller effects. The predominant factor governing nitrogen level in oats of all varieties probably is, as for wheat, the level of available nitrogen in the soil in late spring and early summer, just prior to heading and during development of the grain.Within the variety there is a pronounced inverse correlation between nitrogen and oil content which is independent of grain size: the variability of the oil content within the variety is, however, smaller than the corresponding variability of the nitrogen content. At some localities environmental factors of soil and season, particularly the former, inhibit the filling out of the grains which then ripen prematurely to give small oats with lean kernels of high nitrogen content, and favour within the variety a negative correlation between grain size and nitrogen which otherwise might not be apparent.

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Distribution of Growth and Enzyme Activity in the Developing Grain of Wheat

Australian Journal of Biological Sciences ◽

10.1071/bi9610552 ◽

1961 ◽

Vol 14 (4) ◽

pp. 552 ◽

Cited By ~ 4

Author(s):

AHGC Rijven ◽

R Cohen

Keyword(s):

Enzyme Activity ◽

Nitrogen Content ◽

Total Nitrogen ◽

Dry Weight ◽

Total Nitrogen Content ◽

Fresh Weight

Ears of field-grown wheat were harvested on 12 occasions between anthesis and ripeness. Fresh weight, dry weight, and total nitrogen content of selected grains were determined.

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Distribution of Nutrients in Sundarbans Coastal Ecosystem- A Case study

Agropedology ◽

10.47114/j.agroped.2017.jun6 ◽

2019 ◽

Vol 27 (1) ◽

Author(s):

R. Srinivasan ◽

◽

D. C. Nayak ◽

S. K. Singh ◽

◽

...

Keyword(s):

Organic Carbon ◽

Carbon Content ◽

Nitrogen Content ◽

Soil Management ◽

Available Phosphorus ◽

Organic Carbon Content ◽

Available Nitrogen ◽

Management Units ◽

Very High

The distribution of nutrients were studied in six soil management units identified viz., Chandipur, Biprodaspur, Pathankhali, Manmathanagar-I, Manmathanagar-II and Bhupendranagar of Gosaba block (part) of sundarbans ecosystem. Data indicated that the soils were strongly acidic (< 4.5) to neutral in reaction and associated with marginal to severe salinity (> 13.3 dS m-1). The organic carbon content ranged from 0.67 to 1.66% in surface and 0.15 to 3.44% in sub-soils. The available nitrogen content varied from 90 to 502 kg ha-1 and it changed significantly with depth. The available phosphorus varied from 0.5 to 24.7 kg ha-1. Available potassium and sulphur in soils are very high, ranging from 178 to 572 kg ha-1 and 25 to 706 mg kg-1 respectively. DTPA -Fe and Mn varied from 18.9 to 336 and 2.17 to 37.6 mg kg-1 in soils being higher in sub-surface horizons, and DTPA- Zn and Cu ranged 0.27 to 4.73 and 0.63 to 14.5 mg kg-1 respectively.

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INFLUENCE OF WEATHER CONDITIONS ON THE NITROGEN CONTENT OF WHEAT

Canadian Journal of Research ◽

10.1139/cjr35-017 ◽

1935 ◽

Vol 12 (2) ◽

pp. 228-237 ◽

Cited By ~ 4

Author(s):

J. W. Hopkins

Keyword(s):

Nitrogen Content ◽

Statistical Study ◽

Weather Conditions ◽

Growing Season ◽

Significant Negative Correlation ◽

Maximum Temperature ◽

Vegetative Development ◽

Total Leaf Area ◽

Available Nitrogen ◽

Main Effect

A statistical study of results from experimental plots of Marquis wheat grown annually (though not on the same soil) at five points in Saskatchewan and Alberta indicates that there was a significant negative correlation between the amount of rainfall during the growing season and the nitrogen content of wheat. The main effect of rainfall was exerted during May and June. The data do not justify the conclusion that the amount of rain falling in July or August, or the amount of pre-seasonal precipitation, modified the nitrogen content significantly. Mean maximum temperature for July or August failed to show a significant correlation with nitrogen content, but may not be a satisfactory measure of the temperature conditions actually experienced by the crop.It is suggested that the preponderating effect of early rainfall may be due to the fact that it stimulates tillering and vegetative development generally. The available nitrogen must thus be distributed amongst an increased number of culms, whilst at the same time the total leaf area devoted to the production of carbohydrates is augmented.

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