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    Native forage quality, quantity, and profitability as affected by fertilization in northern Mexico

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    Author
    Rubio, H. O.
    Wood, M. K.
    Gomez, A.
    Reyes, G.
    Issue Date
    1996-07-01
    Keywords
    ammonium nitrate
    urea
    phosphorus fertilizers
    cost-benefit analysis
    protein content
    Mexico
    ammonium sulfate
    yields
    rain
    water-use efficiency
    digestibility
    crude protein
    application rates
    rangelands
    forage
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    Citation
    Rubio, H. O., Wood, M. K., Gomez, A., & Reyes, G. (1996). Native forage quality, quantity, and profitability as affected by fertilization in northern Mexico. Journal of Range Management, 49(4), 315-319.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644287
    DOI
    10.2307/4002589
    Additional Links
    https://rangelands.org/
    Abstract
    Fourteen treatments of nitrogen (N) and phosphorus (P) fertilizers were applied in an overgrazed eight rangeland in northern Mexico, during 1990 and 1991. Eight treatments were applied using ammonium nitrate as a source of N (60-0-0, 60-30-0, 60-60-0, 80-40-0, 120-30-0, 120-60-0, 120-90-0 and 180-60-0 kg ha-1), 2 treatments with ammonium sulfate (60-30-0 and 120-60-0 kg ha-1), 2 with urea (60-30-0 and 120-60-0 kg ha-1), only P (0-30-0 kg ha-1), and the control (0-0-0 kg ha-1). Triple superphosphate was applied as a source for P. The 80-40-0 treatment was included because it was the commonly recommended rate for the area. Fertilizers were applied at the beginning of the rainfall season (July) and forage was harvested in late October (1990) and mid-November (1991). Dry matter production, crude protein (CP) content, and in situ digestibility were determined. An economic analysis was used to obtain the best economic treatment for forage production. In 1990 with a precipitation of 377 mm, dry matter production was significantly affected for both source and rate of N. The maximum amount of dry matter was obtained with a rate of 120-90-0 kg ha-1 using ammonium nitrate. However, the best treatment in terms of economic return was 120-30-0 kg ha-1 as ammonium nitrate. Urea did not produce as well as other N source treatments. Crude protein was highest in treatments with the higher N, but no significant trend was evident. In situ digestibility was not affected by rate or source of N fertilizer. During 1991, precipitation was higher than in 1990. Significant differences were determined among N rates but not in N source. In fact, urea produced greater in dry matter production than other N sources at the same rate. The maximum amount of dry matter was obtained with the 180-60-0 treatment using ammonium nitrate with 4,190 kg ha-1, but the best economic treatments were the 120-30-0 and 60-0-0 with a marginal return rate of 377% and 355%, respectively. Results of CP and in situ digestibility were similar to those of 1990.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002589
    Scopus Count
    Collections
    Journal of Range Management, Volume 49, Number 4 (July 1996)

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