Abstract
This study was conducted to determine the effects of different mowing dates of plant top on tuber yield of Jerusalem artichoke ( Helianthus tuberosus L) during 2005 and 2006 growing seasons. The experiment was designed according to the “split plots on randomized complete block” experimental design with three replications. Three different mowing dates [a: August 18 (before flowering), b: September 21 (beginning of flowering), c: October 20 (full flowering) and k: control (not-mowing)] and two varieties [red (K) and white (A) skin local Jerusalem artichoke] were taken as factors. Tuber yield and yield components were higher in the first mowing date and control than in the second and third mowing dates in 2005, 2006 and in the average of 2005 to 2006. Two years average maximum tuber yields per decare were 5149.78 kg in the control plots and 3327.27 kg in the plots of red skin of Jerusalem artichoke. The results suggest that first mowing date and control are suitable mowing times for tuber yield.
Highlights
Jerusalem artichoke has been used for the purpose of human and animal nutrition, and as a raw material for industrial or energy production
The results suggest that first mowing date and control are suitable mowing times for tuber yield
Jerusalem artichoke tubers are consumed by the people directly as fresh and it was evaluated at many places as like potatoes tubers
Summary
Jerusalem artichoke has been used for the purpose of human and animal nutrition, and as a raw material for industrial or energy production. The effect of different planting dates on the yields of tuber and plant tops of Jerusalem artichoke were researched. Plant and tuber characteristics of red and white skin local Jerusalem artichoke genotypes were determined in 2004. Tuber number per plant, average tuber weight, tuber yield per plant and per hectare of red and white skin local Jerusalem artichoke genotypes were obtained as 47.67 number/plant, 29.55 g, 1.01 kg/plant, 28.80 t/ hectare and 47.67 number/plant, 25.95 g tuber, 1.23 kg/ plant, and 35.03 t/hectare respectively (Killi et al, 2005). There was a higher initiate density in spring in comparison with the not mown populations (the higher number of shoots could be induced by the stress generated by cutting during the previous year).
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