Performance of 'Grasslands Puna' chicory at different management levels
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Authors: G. A. Jung, J. A. Shaffer, G. A. Varga, and J. R. Everhart
Date: 1996
Journal: Agronomy Journal
Volume: 88
Number:
Pages: 104-111
Summary of Methods: Clipping trials with Puna chicory, Cichorium intybus, began in Pennsylvania in 1991 to examine the influence of management levels on herbage production and quality, suppression of floral stem production, and stand persistence. Pennlate orchardgrass, Dactylis glomerata, was used as a check species due to its high tolerance of different clipping schedules. Mean annual forage yield was greater for chicory than for orchardgrass in 1992 and 1993, with 2-year means of 9.4 and 7.9 Mg ha-1, respectively. Total forage mass of both species was unaffected by management in 1992 and likewise for orchardgrass in 1993. Chicory leaf mass was 33% less under light than under heavy management in 1992, whereas the effect of management intensity was not significant in 1993. Puna chicory showed an unusual resiliency to produce high yields of dry matter and crude protein over a wide range of management intensities. The concentrations of mineral elements in chicory generally met or exceeded National Research Council required levels for lactating dairy cows, while those in orchardgrass in many cases did not. These results show that Puna chicory can withstand many defoliation intensities while maintaining excellent productivity.
Article Summary / Main Points: None
Vegetation Types:
MLRA Ecoregions:
Agrovoc Control Words: Riparian zones Rangelands Wildlife
Article Review Type: Refereed
Article Type: Experimental Research
Keywords: grasslands puna chicory, cichorium intybus, orchardgrass, dactylis glomerata, herbage production, herbage quality, stand persistence, stem production, management intensities
Annotation: Treatments were heavy, moderate, and light management, corresponding to 25-, 37-, and 50-cm chicory canopy height at harvest, with N fertilizer applied after each harvest except the last.
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