Results 271 to 280 of about 220,937 (307)

Nitrogen Fertilization of Ponds

Transactions of the American Fisheries Society, 1978
Abstract Nitrogen fertilization failed to increase the production of bluegill (Lepomis macrochirus) and plankton in small experimental ponds (0.022 to 0.066 hectare) which were also fertilized with phosphorus. In an experiment conducted in larger ponds (0.57 to 10.32 hectares), nitrogen plus phosphorus fertilization was no more effective than ...
Claude E. Boyd, John W. Sowles
openaire   +1 more source

Nitrogen Fertilization I: The Nitrogen Balance

2016
Nitrogen is the most important nutrient in agricultural production. The natural input of N is due to N fixation, especially by Rhizobium bacteria that infect the roots of legumes. Organic N becomes inorganic through mineralization, and then inorganic N is absorbed by plants.
Miguel Quemada, Antonio Delgado, Luciano Mateos, Francisco J. Villalobos   +3 more
openaire   +1 more source

Nitrogen fertilization of potatoes

American Potato Journal, 1958
1. Yield increases under irrigated Long Island conditions were obtained with applications up to 210 pounds of nitrogen per acre with Cobbler and Katahdin varieties. 2. Nitrogen distribution had little effect on yield as long as vines were allowed to go to maturity. 3. When less than 70 pounds of the total nitrogen was applied
R. L. Sawyer, S. L. Dallyn
openaire   +1 more source

Immobilization of fertilizer nitrogen and consequences for nitrogen fertilization of cereals

2001
From field trials with winter cereals it is known that about half of the applied fertiliser N (N) is not recovered in crops nor in soil mineral N (Nmin). In some experiments it has been shown that most of this non-recovered N was immobilized by soil microorganisms, which reduced fertiliser N availability for the crops. In field trials with winter wheat
K. Blankenau, H.-W. Olfs, H. Kuhlmann
openaire   +1 more source

Fate of fertilizer nitrogen.

Journal of Soil Science, 1985
SUMMARY Results are presented from a three year lysimeter investigation, employing single ( 15 NH 4 NO 3 ) and double ( 15 NH 4
D. BARRACLOUGH, E. L. GEENS, G. P. DAVIES, J. M. MAGGS   +3 more
openaire   +1 more source

Nitrogen Fertilization of Buffalograss

Crop Science, 2001
Because native, shortgrass prairies are not typically fertilized and otherwise extensively managed, little information is available on their response to nitrogen (N) fertilization. An experiment was conducted in 1997 and 1998 to study the effects of N fertilization on forage yield and quality, forage height, and subsequent nitrate accumulation in the ...
T.L. Springer, C.M. Taliaferro
openaire   +1 more source

Groundwater: Nitrogen Fertilizer Contamination

2020
Groundwater is a major human drinking water source and contributes substantially to surface water bodies when aquifers intersect the earth’s surface. High nitrate-nitrogen (NO3-N) concentrations in this water, whether from agricultural or non-agricultural sources, can create human health and environmental problems.
Lloyd B. Owens, Douglas L. Karlen
openaire   +1 more source

Metagenomics reveals taxon-specific responses of the nitrogen-cycling microbial community to long-term nitrogen fertilization

Soil Biology and Biochemistry, 2021
Binbin Liu, Chunsheng Hu
exaly  

Nitrogen Fertilizer

Science, 1974
openaire   +2 more sources

Long-term straw mulching with nitrogen fertilization increases nutrient and microbial determinants of soil quality in a maize–wheat rotation on China's Loess Plateau

Science of the Total Environment, 2021
Jianbin Zhou
exaly