חיפוש מתקדם
The Sweetpotato
Loebenstein, G., Agricultural Research Organization, Bet Dagan, Israel
Thottappilly, G., Sardaya College of Engineering and Technology, Kodakara, Kerala, India
Fuentes, S., International Potato Center (CIP), Apartado 1558, Lima 12, Peru
Cohen, J., Agricultural Research Organization, Bet Dagan, Israel
Sweetpotatoes are vegetative propagated from vines, root slips (sprouts) or tubers, and farmers often take vines for propagation from their own fields year after year. Thus, if virus diseases are present in the field they will inevitable be transmitted with the propagation material to the newly planted field, resulting often in a marked decrease in yields. Yields differ greatly in different areas or even fields in the same location. Thus, the average yield in African countries is about 7.02 tons/ha, with yields of 9.4, 4.4, 2.5 and 3.2 ton/ha in Kenya, Uganda, Sierra Leone and Nigeria, respectively. The yields in Asia are significantly higher, averaging 12.41 tons/ha. China, Japan, Korea and Israel have the highest yields with about 21.6, 25.8, 16.4 and 44.4 tons/ha, respectively. © Springer Science+Business Media B.V. 2009. All rights reserved.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
Virus and phytoplasma diseases
Loebenstein, G., Agricultural Research Organization, Bet Dagan, Israel
Thottappilly, G., Sardaya College of Engineering and Technology, Kodakara, Kerala, India
Fuentes, S., International Potato Center (CIP), Apartado 1558, Lima 12, Peru
Cohen, J., Agricultural Research Organization, Bet Dagan, Israel
Virus and phytoplasma diseases
Sweetpotatoes are vegetative propagated from vines, root slips (sprouts) or tubers, and farmers often take vines for propagation from their own fields year after year. Thus, if virus diseases are present in the field they will inevitable be transmitted with the propagation material to the newly planted field, resulting often in a marked decrease in yields. Yields differ greatly in different areas or even fields in the same location. Thus, the average yield in African countries is about 7.02 tons/ha, with yields of 9.4, 4.4, 2.5 and 3.2 ton/ha in Kenya, Uganda, Sierra Leone and Nigeria, respectively. The yields in Asia are significantly higher, averaging 12.41 tons/ha. China, Japan, Korea and Israel have the highest yields with about 21.6, 25.8, 16.4 and 44.4 tons/ha, respectively. © Springer Science+Business Media B.V. 2009. All rights reserved.
Scientific Publication
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