Comparison of white clover and ammonium nitrate as nitrogen sources for tall fescue

Watson, C. E.; Watson, V. H.

doi:10.1007/bf01080535

Cited by 2 publications

(2 citation statements)

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“…Botanical composition analysis showed that percentage WC was lower than that of CW when mixed to existent tall fescue plots in 2016 and lower than both CW and RC in 2017 (Table 2). Many studies suggest that planting WC in a mixture with tall fescue increases production (Dobson et al, 1976), improves forage quality, and can serve as an N supply (Watson and Watson, 1989). However, our results do not agree with past research.…”

Section: Botanical Compositioncontrasting

confidence: 99%

Alternatives to Conventional Nitrogen Fertilization on Tall Fescue and Bermudagrass

et al. 2019

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Alternatives to conventional N fertilization on tall fescue [Schedonorus arundinaceus (Schreb.) Dumort., nom. cons. cv. Kentucky-31] and bermudagrass [Cynadon dactylon (L.) Pers. cv. Vaughn's #1] were studied at the University of Tennessee Plateau Research and Education Center in Crossville, TN. The experimental period occurred from April to September 2016 and 2017, and the experimental design for each experiment was a completely randomized block design with six treatments and four replications (n = 24). For both species, treatments were: control (CN) without N fertilization; grass and white clover (WC) [Trifolium repens (L.) cv. Ladino-Will]; grass and red clover (RC) [Trifolium pretense (L.) cv. Cinnamon Plus]; grass and cowpea (CW) [Vigna unguiculata (L.) cv. 'Iron & Clay']; broiler litter (BL); and ammonium nitrate (AN). Legume percentage of CW in tall fescue was comparable to RC in tall fescue (P = 0.646) in 2016 but differed in 2017 (P = 0.0002). Also in tall fescue, RC treatments resulted in the greatest total herbage mass (HM) in 2017, which was 1986 kg ha -1 more than other treatments. In 2017, RC and WC treatments in tall fescue were greater in (ADF) for most of the growing season. For bermudagrass, RC treatments resulted in the greatest HM in 2016, with 4526 kg ha -1 more than other treatments, and in 2017 with 4289 kg ha -1 more than other treatments. Treatments containing a single application of BL or AN in spring each year showed no differences for total HM and crude protein (CP) in both species.

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Section: Botanical Compositioncontrasting

confidence: 99%

Alternatives to Conventional Nitrogen Fertilization on Tall Fescue and Bermudagrass

et al. 2019

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“…Some authors suggest that nitrification activity in soil declines markedly below pH 6.0 (Aciego Pietri and Brookes, 2008). Watson and Watson (1989) reported that nitrif ication does not occur at pH < 6.5. However, some studies have shown the adaptation of the autotrophic bacteria to low pH in soils (Islam et al,.…”

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confidence: 99%

White poplar (Populus alba L.) - Litter impact on chemical and biochemical parameters related to nitrogen cycle in contaminated soils

et al. 2014

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Aim of study: The aim of this study was to determine the effect of litter from Populus alba on chemical and biochemical properties related to the N cycle in soils with different pH values and trace element contents. We hypothesized that this litter would influence several parameters related to the N cycle and consequently to soil health.Area of study: we collected two reforested contaminated soils of different pH values (AZ pH 7.23 and DO pH = 2.66) and a non-contaminated soil (RHU pH 7.19).Materials and methods: Soil samples were placed in 2,000 cm3 microcosms and were incubated for 40 weeks in controlled conditions. Each soil was mixed with its corresponding litter, and soils without litter were also tested for comparison. Ammonium (NH4+-N) and nitrate (NO3–-N) content, potential nitrification rate (PNR), microbial biomass nitrogen (MBN), protease activity, and several chemical properties such as pH, available trace element concentrations (extracted with 0.01 M CaCl2) were determined at different times of incubation.Main results: Values of available trace elements did not vary during the incubation and were always higher in acid soil. In neutral soils litter presence increased values of Kjeldahl-N, NO3–-N content, potential nitrification rate (PNR), microbial biomass nitrogen (MBN) and protease activity. Presence of trace elements in neutral soils did not alter the parameters studied. However, acidic pH and high content of available trace elements strongly affected NH4+-N andNO3–-N, microbial biomass N and protease activity.Research highlights: Our results showed the negative effect of the acidity and trace element availability in parameters related with the N-cycle.Key words: microbial biomass N; protease activity; soil pH; N mineralization; nitrification; phytoremediation.

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Comparison of white clover and ammonium nitrate as nitrogen sources for tall fescue

Cited by 2 publications

References 14 publications

Alternatives to Conventional Nitrogen Fertilization on Tall Fescue and Bermudagrass

Alternatives to Conventional Nitrogen Fertilization on Tall Fescue and Bermudagrass

White poplar (Populus alba L.) - Litter impact on chemical and biochemical parameters related to nitrogen cycle in contaminated soils

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