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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/69/2/AJ0690020308
Last checked: 12/08/2016
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| Publication Type:
| Refereed |
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| Author(s): | Beaty, E. R.;
Engel, J. L.;
Powell, J. D. |
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| Author Affiliation: | Beaty: Professor; Engel: Technician, University of Georgia, College Station, Athens, Georgia; Powell: Superintendent, Americus Plant Materials Center, Soil Conservation Service, United States Department of Agriculture, Americus, Georgia |
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| Title: | Yield, leaf growth, and tillering in bahiagrass by N rate and season |
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| Source: | Agronomy Journal. Vol. 69, No. 2, March/April 1977, p. 308-311. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Paspalum notatum; Stolons; Clippings; Nitrogen fertilization; Tillers (vegetative); Nitrogen; Fertility; Forage; Leaves; Phytomers
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| Abstract/Contents: | "If tiller numbers/area of Pensacola bahiagrass (Paspalum notatum, Flugge) could be correlated with yield and tillers/area is related to N fertility status, fertility and yield research would be simplified. To test the concept that a yield predictive model could be developed, an established Pensacola bahiagrass sod was fertilized with 0, 84, 168, and 336 kg/ha N in 1973 and 1974. Starting in early June and continuing until October plots were clipped monthly at heights of 2.5 and 7.5 cm. Before clipping, 10 tillers with mature leaves/plot were collected and numbers of clipped elongated and unclipped leaves were determined. Tillers on duplicate (15 cm)2 areas were counted after clipping. Dry forage was increased over the 0 N check by adding 84 and 168 kg/ha N. The 336 kg/ha N did not increase forage yields over 168 kg/ha N. Clipping at 2.5 cm produced almost three times as much forage as clipping at 7.5 cm. Number of leaves/stolon/season averaged between 20.2 and 22.0 and was influenced by N rate. At each of the five harvest dates, an average of 1.3 leaves/tiller (growing point) was elongating. Nitrogen application increased tiller numbers by up to 300% and the largest number of new tillers occurred in June. Some data as collected were predictive of N and leaf generation rate, but variations in tiller numbers/area and probably leaf weight/N relationships prevented the development of an effective yield prediction model. Further refinement of the data is needed. Statistical models based on tillers/area were not effective in predicting yields. The lack of an effective relationship between tillers/area and yield was believed due to many young tillers dying before contributing to yield and variations in leaf size reflecting N fertilization and tiller age." |
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| Language: | English |
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| References: | 14 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Beaty, E. R., J. L. Engel, and J. D. Powell. 1977. Yield, leaf growth, and tillering in bahiagrass by N rate and season. Agron. J. 69(2):p. 308-311. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/69/2/AJ0690020308
Last checked: 12/08/2016
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Access conditions: Item is within a limited-access website |
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MSU catalog number: b2212646a |
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