Amending constructed roadside and urban soils with large volume-based compost applications : effects on water quality /

The fate of manure phosphorus during production and harvest of turfgrass sod /
by: McDonald, Brandon Tieman, 1980-
Published: (2005)

Evaluation of cowpea (Vigna unguiculata L. Walp) genotypes for adaptation to low soil-phosphorus conditions and to rock phosphate application /
by: Mahamane, Sabiou
Published: (2010)

Optimal operation of large agricultural watersheds with water quality constraints /
by: Williams, Jimmy Ray
Published: (1978)

The effects of intra-row spacing on nitrogen accumulation and fixation in nodulating and non-nodulating soybeans /
by: Nelson, Alfred Nels
Published: (1979)

Effects of biochar recycling on switchgrass growth and soil and water quality in bioenergy production systems /
by: Husmoen, Derek
Published: (2012)

Algal nutrient availability and limitation in Lake Ontario during IFYGL.
Published: (1976)

Concentrations, loads, and yields of select constituents from major tributaries of the Mississippi and Missouri Rivers in Iowa, water years 2004-2008 /
by: Garrett, Jessica D.
Published: (2012)

The effects of nitrogen fertilization on bioenergy sorghum yield and quality /
by: Zilahi-Sebess, Szilvia Katalin
Published: (2012)

Summary analysis of the North American (US portion) OECD eutrophication project : nutrient loading - lake response relationships and trophic state indices /
by: Rast, Walter
Published: (1978)

Dry matter, yield components and pulping quality studies on four varieties of kenaf as influenced by nitrogen fertilization /
by: Idem, Nditoi Udo Akpan
Published: (1977)

Urban sodicity in a humid subtropical climate : impact on biogeochemical cycling /
by: Steele, Meredith Kate
Published: (2012)

Screening for effective strains of Bradyhizobium nodulating cowpea /
by: Moe, Kyaw, 1944-
Published: (1987)

Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : evaluation of alkaline persulfate digestion as an alternative to Kjeldahl digestion for determination of total and dissolved nitrogen and phosphorus in water /
by: Patton, Charles J.
Published: (2003)

Pollution in runoff from nonpoint sources /
by: Campbell, Kenneth L., 1943-
Published: (1978)

Nitrogen fertilization timing effect on wheat production and nitrogen uptake efficiency /
by: Alcoz Sartori, Maria Mercedes, 1964-
Published: (1992)

Sulfur oxidation influence on rock phosphate solubilization in soil /
by: Correa de Souza, Osni, 1946-
Published: (1985)

Estimation of total nitrogen and phosphorus in New England streams using spatially referenced regression models /
Published: (2004)

The inorganic heterocyclic chemistry of sulfur, nitrogen, and phosphorus /
by: Heal, Henry G.
Published: (1980)

Criteria for estimating limiting nutrients in natural streams /
by: O'Shaughnessy, James C.
Published: (1973)

Phosphorus and other nutrient disappearance from plants containing condensed tannins using in situ and mobile nylon bag techniques /
by: Pagan Riestra, Suzika
Published: (2011)

Competition for ¹⁵N labelled ammonium between Trifolium subterraneum L. and Lolium multiflorum L. when grown in a mixture
by: Muñoz, Antonia Elena, 1946-
Published: (1985)

The effects of environmental and management factors on the nitrogenase activity, total N content, and yield of seedling alfalfa (Medicago sativa L.) /
by: Johnson, Timothy Charles
Published: (1978)

Sorghum stover removal and fertilizer nitrogen effects on sorghum yields and nutrient cycling /
by: Powell, J. Mark, 1952-
Published: (1989)

Percentile distributions of median nitrite plus nitrate as nitrogen, total nitrogen, and total phosphorus concentrations in Oklahoma streams, 1973-2001 /
by: Haggard, Brian E. (Brian Edward)
Published: (2003)

Determination of a nitrogen-phosphorus budget for Bayou Texar, Pensacola, Florida /
by: Moshiri, Gerald A.
Published: (1974)

Some important inorganic nitrogen and phosphorus species in Georgia salt marsh.
by: Maye, Peter Robert
Published: (1972)

The effect of phosphorus on nitrogen fixation in three genotypes of cowpea (Vigna unguiculata (L.) Walp.) /
by: Prophete, Emmanuel Hugues, 1952-
Published: (1984)

Evaluation of the algal assay procedure /
by: Weiss, Charles M., 1918-
Published: (1976)

Seasonal variation of nitrogen, phosphorous, and chlorophyll a in Lake Michigan and Green Bay, 1965 /
by: Allen, Herbert E. (Herbert Ellis), 1939-
Published: (1973)

Nitrogen and phosphorus nutrition of cattle : reducing the environmental impact of cattle operations /
Published: (2005)

The relative significance of phosphorus and nitrogen as algal nutrients /
by: Weiss, Charles M., 1918-
Published: (1970)

Phosphorus-nitrogen compounds ; cyclic, linear, and high polymeric systems /
by: Allcock, H. R.
Published: (1972)

Nonpoint source -- stream nutrient level relationships : a nationwide study /
by: Omernik, James M.
Published: (1977)

Low flow nutrient loss in the mid-Trinity River ; [runoff-related pollutant loadings in the mid-Trinity River] : prepared under contract no. PG 75-36 for the Texas Water Quality Board, Austin, Texas by the Planning and Environmental Management Division of the Trinity River Authority of Texas.
Published: (1978)

Nutrient partitioning and seedling development in the genus Leucaena.
by: Dovel, Randy Lynn
Published: (1987)

Photosynthate partitioning within Oryza sativa L. in response to additions of gentamicin or diazotrophic bacteria to the rooting medium /
by: Simonson, Randal Luverne, 1959-
Published: (1983)