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An initial comparison of the content of bitter substances in Cynara Scolymus L. plants obtained from rooted of shoots and micropropagation
No full textCynaropicrin, a sesquiterpene, is the main bitter compound in globe artichoke and is important for the organolectic and nutritional quality of the fresh product and leaf extracts. Artichoke plants of the late variety "Grato 1" obtained from rooted offshoots and by micropropagation were compared with respect to the bitter content in the young leaves and heads. The bitter content, expressed as cynaropicrin (% of dry weight), was determined by an alkalimetric method. The results show a bitter content ranging from 6.82 to 9.63%; the leaves of the micropropagated plants had 29% less bitter content than the plants traditionally propagated by rooted offshoots
Crescita in vivaio e qualità delle piantine di lattuga (Lactuca sativa L.) e di cavolo (Brassica oleracea L.) per l’orticoltura biologica
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Element Allocation in Tissues of Inula viscosa in Sodic-saline Conditions: A Candidate for Programs of Desertification Control
No full textFlaming for intra-row weed control in Globe Artichoke
No full textThe artichoke (Cynara scolimus L.) is a perennial plant and today is mainly cultivated for the
production of the edible flower buds. Italy is the largest producer as well as the largest consumer of
artichokes. Nearly half of the world artichokes are grown in Italy.
Artichoke, that is very strong crop, has in weed control one of the greater problems especially
in organic farming. Non chemical intra-row weed control is carried out with hand hoeing that is a
very long and hard work.
The present study aimed to investigate the possibility to change hand hoeing with flaming for
intra-row weed control. The experiments compared two different intra row weed control techniques
during the cultivation cycle, hand hoeing and flaming (performed with a knapsack flamer), and an
unweeded control.
For any treatments were measured or calculated operative time, working capacity, and LPG
consumption per hour and hectare, weed density, artichoke yield.
In the two years of tests intra-row weed control was performed with one treatment of hand
hoeing and two of flaming. Flaming permitted a work saving on average of about 65 h/ha with a
LPG consumption of 107.5 kg/ha. Artichoke yield (bud/ha) was not different for the two different
intra-row weed control techniques and lower for the unweeded control. At the end of cultivation
cycle the time to remove all the weed (standard cultural practices) was not different between the
two technique and higher for the control.
These first results indicate that flaming is efficient for intra-row weed control in artichoke
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