Effects of composted dairy manure on soil chemical properties and forage yield and nutritive value of coastal Bermudagrass [Cynodon dactylon (L.) Pers.]

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dc.contributor.advisor Hons, Frank M. en_US
dc.contributor.advisor McFarland, Mark L. en_US
dc.creator Helton, Thomas J., 1978- en_US
dc.date.accessioned 2005-02-17T20:59:05Z
dc.date.available 2005-02-17T20:59:05Z
dc.date.created 2004-12 en_US
dc.date.issued 2005-02-17T20:59:05Z
dc.identifier.uri http://handle.tamu.edu/1969.1/1333
dc.description.abstract Research was conducted to compare the effects of composted dairy manure and raw dairy manure alone, or in combination with supplemental inorganic fertilizer, on soil chemical properties and Coastal bermudagrass [Cynodon dactylon (L.) Pers.] yield and nutritive value. Composted dairy manure was surface applied at rates of 14 (125 kg N ha-1), 29 (250 kg N ha-1) and 57 (500 kg N ha-1) Mg dry matter (DM) ha-1, and raw dairy manure was surface applied at a rate of 54 (420 kg N ha-1) Mg DM ha-1 to established bermudagrass. Selected compost and manure plots received supplemental inorganic N at rates of 56, 84 and 112 kg ha-1 cutting-1 or 112 kg ha-1 cutting-1 of supplemental N with supplemental inorganic phosphorus or potassium at rates of 112 kg P2O5 ha-1 yr-1 and 112 kg K2O ha-1 cutting-1, respectively. Composted dairy manure (29 and 57 Mg DM ha-1) or raw manure alone increased cumulative forage yields compared to the untreated check in both years of the study, but were less than those obtained using only inorganic fertilizer. Application of 56 kg N ha-1 cutting-1 or more of supplemental N to compost (29 and 57 Mg DM ha-1) or iv manure produced forage yields that were equal to or greater than those obtained using inorganic fertilizer alone. However, increasing compost rate did not increase tissue N concentrations regardless of supplemental inorganic N rate. Yield and tissue K concentrations were increased in the second growing season when supplemental inorganic K was applied to 29 Mg ha-1 of compost or 54 Mg ha-1 of raw dairy manure. No yield response was observed when supplemental inorganic P was applied to compost or manure. Soil pH and concentrations of NH4, NO3, K, Ca, Mg and Mn were increased by application of compost or manure. Soil P concentrations in the 0 to 5-cm zone exceeded 200 mg kg-1 when compost was applied at the high rate. Dairy manure compost was an effective nutrient source for bermudagrass hay production, but will require the use of supplemental N and, in some cases, K to achieve yields comparable to inorganic fertilizer. en_US
dc.description.provenance Made available in DSpace on 2005-02-17T20:59:05Z (GMT). No. of bitstreams: 1 etd-tamu-2004C-2-AGRO-Helton.pdf: 313918 bytes, checksum: 7b01e44b3898e7a33786d898593026c2 (MD5) en
dc.format.extent 313918 bytes
dc.format.medium electronic en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher Texas A&M University en_US
dc.subject compost en_US
dc.subject dairy manure en_US
dc.subject water quality en_US
dc.subject nutrient management en_US
dc.title Effects of composted dairy manure on soil chemical properties and forage yield and nutritive value of coastal Bermudagrass [Cynodon dactylon (L.) Pers.] en_US
thesis.degree.department Soil and Crop Sciences en_US
thesis.degree.discipline Soil Science en_US
thesis.degree.grantor Texas A&M University en_US
thesis.degree.name M. S. en_US
thesis.degree.level Masters en_US
dc.contributor.committeeMember Muir, James P. en_US
dc.contributor.committeeMember Mukhtar, Saqib en_US
dc.type.genre Electronic Thesis en_US
dc.type.material text en_US
dc.format.digitalOrigin born digital en_US

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