caa a22 4500 477046614 CHVBK 20180405111332.0 cr unu---uuuuu 170330e19960401xx s 000 0 eng 10.1007/BF02861447 doi (NATIONALLICENCE)springer-10.1007/BF02861447 Berry productivity and molluscicidal saponin yield of Phytolacca Dodecandra (Phytolaccaceae) under different sunlight, watering and nutrient conditions [Elektronische Daten] [Jerikias Ndamba, Ian Robertson, Else Lemmich, Stephen Chandiwana, Peter Furu, Per Mølgaard] Production de baies et rendement de saponines de la molluscicide végétale Phytolacca dodecandra (Phytolaccaceae) influencés de soleil, d'irrigation et d'engraissage The cultivation ofPhytolacca dodecandra has been studied in Zimbabwe in order to initiate local production of the berries from which molluscicidal saponins can be extracted and used in schistosomiasis control programs. The effect of shading, water and nutrient type on growth and berry yield of an imported Ethiopian and a Zimbabwean cultivar were monitored. The molluscicidal potency and saponin concentration of the aqueous extracts of berries, harvested at the full grown, unripe development stage, were determined. There was a marked seasonal variation in berry production with both cultivars being highly productive in the dry season. The best growth and the highest berry yield was obtained with plants grown in full sunlight, under irrigation and with application of cattle manure. The Ethiopian cultivar showed in general better growth and higher berry yield than the Zimbabwean cultivar. Cultivation in shade gave a substantially lower berry yield and saponin concentration in both cultivars, compared to full sunlight. Irrigation was beneficial to the berry yield in both cultivars but lowered the saponin concentration in berries of the Ethiopian cultivar. However, it did not counteract the advantage of irrigation on the total yield. Addition of manure did significantly increase the growth and the berry yield of both cultivars compared to fertilizer application and to the control. The saponin concentration was in general lower with addition of manure, with exception of irrigated Ethiopian plants. The combination of cattle manure and irrigation resulted in the highest saponin yield. Although the two cultivars had different saponin patterns, these patterns and the relative proportions of the saponins were constant, irrespective of the treatments. The New York Botanical Garden, 1996 Phytolacca dodecandra nationallicence molluscicide, plant nationallicence schistosomiasis nationallicence monodesmosidic saponins nationallicence berry yield nationallicence cultivation methods nationallicence Ndamba Jerikias Blair Research Laboratory, P.O. Box 8105, Causeway, Harare, Zimbabwe aut Robertson Ian Department of Crop Science, University of Zimbabwe, Mount Pleasant, P.O. Box MP167, Harare, Zimbabwe aut Lemmich Else Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100, Copenhagen, Denmark aut Chandiwana Stephen Blair Research Laboratory, P.O. Box 8105, Causeway, Harare, Zimbabwe aut Furu Peter Danish Bilharziasis Laboratory, Jaegersborg Allé ID, DK-2920, Charlottenlund, Denmark aut Mølgaard Per Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100, Copenhagen, Denmark aut Economic Botany Springer-Verlag 50/2(1996-04-01), 151-166 0013-0001 50:2<151 1996 50 12231 https://doi.org/10.1007/BF02861447 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02861447 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ndamba Jerikias Blair Research Laboratory, P.O. Box 8105, Causeway, Harare, Zimbabwe aut NATIONALLICENCE 700 1- Robertson Ian Department of Crop Science, University of Zimbabwe, Mount Pleasant, P.O. Box MP167, Harare, Zimbabwe aut NATIONALLICENCE 700 1- Lemmich Else Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100, Copenhagen, Denmark aut NATIONALLICENCE 700 1- Chandiwana Stephen Blair Research Laboratory, P.O. Box 8105, Causeway, Harare, Zimbabwe aut NATIONALLICENCE 700 1- Furu Peter Danish Bilharziasis Laboratory, Jaegersborg Allé ID, DK-2920, Charlottenlund, Denmark aut NATIONALLICENCE 700 1- Mølgaard Per Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100, Copenhagen, Denmark aut NATIONALLICENCE 773 0- Economic Botany Springer-Verlag 50/2(1996-04-01), 151-166 0013-0001 50:2<151 1996 50 12231 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer