Archived
This content is available here strictly for research, reference, and/or recordkeeping and as such it may not be fully accessible. If you work or study at University of Kentucky and would like to request an accessible version, please use the SensusAccess Document Converter.
Publication Date
1977
Description
The dependence of the biomass production upon the size of the assimilating area of Medicago sativa L. and Trifolium pratense L. was confirmed. However, this dependence was not linear in all the cuttings; in Medicago sativa and tetraploid Trifolium pratense the optimum values of the leaf area index (LAI) were 5 to 6 m2/m2 and 4 to 5 m2 /m2, respectively. In the second cutting, the highest production of both species was obtained when LAI was smaller by 1 m2/m2 than that of the first cutting. In M. sativa and tetraploid T. pratense the maximum assimilating area (leaves and stems) was 19.06 m2/m2 and 18.65 m2/m2, respectively, with LAI of 62 to 63 %. The harvest of M. sativa carried out during flowering increased the value of LAI; however, as compared with harvest during budding, this increase in productivity was not significant. Lower values of LAI and lower biomass production in diploid T. pratense cut during flowering suggested that the harvest should not be carried out at this developmental stage. In the tetraploid form of T. pratense, maximum LAI and maximum production were found after the harvest carried out at the beginning of flowering.
Citation
Hrabe, F, "Some results of studies on correlations between the size of the assimilating area and the biomass production in Medicago sativa L. and Trifolium pratense L." (1977). IGC Proceedings (1977-2023). 4.
(URL: https://uknowledge.uky.edu/igc/1977/sess1/4)
Archival?
Archival
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Some results of studies on correlations between the size of the assimilating area and the biomass production in Medicago sativa L. and Trifolium pratense L.
The dependence of the biomass production upon the size of the assimilating area of Medicago sativa L. and Trifolium pratense L. was confirmed. However, this dependence was not linear in all the cuttings; in Medicago sativa and tetraploid Trifolium pratense the optimum values of the leaf area index (LAI) were 5 to 6 m2/m2 and 4 to 5 m2 /m2, respectively. In the second cutting, the highest production of both species was obtained when LAI was smaller by 1 m2/m2 than that of the first cutting. In M. sativa and tetraploid T. pratense the maximum assimilating area (leaves and stems) was 19.06 m2/m2 and 18.65 m2/m2, respectively, with LAI of 62 to 63 %. The harvest of M. sativa carried out during flowering increased the value of LAI; however, as compared with harvest during budding, this increase in productivity was not significant. Lower values of LAI and lower biomass production in diploid T. pratense cut during flowering suggested that the harvest should not be carried out at this developmental stage. In the tetraploid form of T. pratense, maximum LAI and maximum production were found after the harvest carried out at the beginning of flowering.
