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Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/64/6/AJ0640060739 Last checked: 12/09/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Duell, Robert W.;
Trout, J. R. |
Author Affiliation: | Duell: Associate Research Professor, Soils and Crops Department; Trout: Statistical Consultant, College of Agriculture and Environmental Science, and Assistant Professor, Statistics Department, Rutgers, The State University, New Brunswick, New Jersey |
Title: | Quantitative removal of major nutrients by three pasture grasses |
Source: | Agronomy Journal. Vol. 64, No. 6, November/December 1972, p. 739-743. |
Publishing Information: | Madison, WI: American Society of Agronomy |
# of Pages: | 5 |
Related Web URL: | https://dl.sciencesocieties.org/publications/aj/abstracts/64/6/AJ0640060739 Last checked: 12/09/2016 Access conditions: Item is within a limited-access website Notes: Abstract only |
Keywords: | TIC Keywords: Nutrient uptake; Nitrogen; Potassium; Phosphorus; Minerals; Harvesting; Dry weight; Fertilization program; Evaluations; Festuca arundinacea; Poa pratensis; Dactylis glomerata
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Abstract/Contents: | "On the premise that fertilizer needs might be better understood if plant removal were known, the yield of N, P, and K was recorded for 15 harvests of field plots over 3 years. Tall fescue (Festuca arundinacea Schreb.), Kentucky bluegrass (Poa pratensis L.), and orchardgrass (Dactylis glomerata L.) plots were replicated three times and were split to receive annual applications of A, 224-98-186 (kg/ha of N-P-K) (half in spring, half in summer); B, 224-0-0 (scheduled as A); and C, 112-49-93 (spring only). In individual harvests these grasses frequently differed in yield; percent N, percent P, and weight of elements removed by species, however, only the lower quantity of P removed by Kentucky bluegrass was significantly different, averaging 50% less than the other grasses. The decrease in K removal from NH4NO3 at 224-0-0 vs. 224-98-186 was greater than decreases in removal of N, P, or dry matter. Seasonal and annual decreases in K were consistent. When element removal was calculated as annual yield X mean percentage of the element rather than the sum of the products of plot yield X plot composition, significantly lower mean values for N and K (4.2 and 5.0% lower, respectively) were obtained. N and K percentages were significantly correlated with DM yields. The discrepancy between the actual weight of P removed (by a grass at a fertilizer treatment in a given year) and the short-cut calculation might be either positive or negative; a comparison between such extreme values would lead to large errors." |
Language: | English |
References: | 5 |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Duell, R. W., and J. R. Trout. 1972. Quantitative removal of major nutrients by three pasture grasses. Agron. J. 64(6):p. 739-743. |
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| Web URL(s): https://dl.sciencesocieties.org/publications/aj/pdfs/64/6/AJ0640060739 Last checked: 12/09/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: S 22 .A45 |
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