Talk:Eleocharis dulcis

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Fasciolopsis[edit]

I have removed the reference to Fasciolopsiasis out of suspicion that it came from a confusion of this plant with Trapa natans. No reference was provided and I was unable to find one (although I did not look spend much time looking). — Pekinensis 15:15, 7 September 2005 (UTC)[reply]

found in german book: Parasitologie - Mit besonderer Berücksichtigung humanpathogener Formen, Johannes Dönges, 2. ü.u.e. Aufl. 1988, Georg Thieme Verlag Stuttgart-N.Y. ISBN 3135799026
there with synonyme E. tuberosa, called Water-onion and also trapa natans!
Best read about the parasite Fasciolopsis buski, (Riesendarmegel), seems logic. greetings m.

Excellent. I agree that it seems logical, with the pigs and the freshwater plants mentioned in the parasite article, but I wanted to be cautious because of the frequent name confusion. Thank you for the reference.

I will also add a redirect from "water-onion".

Thanks — Pekinensis 01:39, 13 September 2005 (UTC)[reply]

more refs
  • Fasciolopsiasis: is it a controllable food-borne disease?[1]
  • Fascioliasis and other plant-borne trematode zoonoses.[2]
greetings m.--217.251.133.191 09:59, 13 September 2005 (UTC)[reply]


spikerush ?

Does this article need any other pictures? I have some of cut in half water chestnuts, and also a sprouting one. I think it might be worth adding in that they are grown in more places than just China and the Phillipines in Eastern Asia, they are also grown on a small scale in Australia and US. Terri G 19:24, 20 April 2006 (UTC)[reply]

page defaced[edit]

Removed swamp monkey/river gooch diet silliness.

If someone is allergic to nuts, would he or she also be allergic to water chestnuts?

Curious Jen

Probably not, they're a completely different part of the plant kingdom. Terri G 19:18, 22 March 2007 (UTC)[reply]
Water Chestnuts are not nuts at all, but rather root vegetables, like potatoes or carrots. --98.177.196.2 (talk) 20:38, 6 May 2012 (UTC)[reply]

Bite-sized[edit]

I understand they're used in an hors d'oeuvre. Anybody know which one? TREKphiler hit me ♠ 22:34, 30 July 2008 (UTC)[reply]

Nutritional values[edit]

I would be interested in seeing a nutritional breakdown and details of compounds found in the water chestnut. 89.240.7.86 (talk) 21:20, 31 January 2010 (UTC)[reply]

Would like to see a culinary section added to Chinese water chestnut.[edit]

75.142.100.72 (talk) 00:15, 25 January 2015 (UTC)[reply]

Eleocharis dulcis#Taste--Mr Fink (talk) 03:13, 25 January 2015 (UTC)[reply]

Agronomic properties[edit]

We (Uz003 & Chcrop) would like to add a new section about agronomic properties plus add a few more general properties in the introductory text. Chcrop (talk) 12:55, 30 November 2016 (UTC)[reply]

Cutivation[edit]

The crop can be cultivated in paddies (2-7.5m wide by up to 100m long to allow for mechanization)[1] or in a hydroponic culture.[2] As it is an aquatic plant, it should always be submerged in approx. 10cm of water.[3] The crop needs continuously high soil temperatures, ideally 14-15.5°C (6). At 13.6°C, the corms begin to sprout.[1] Soil is ideally a sandy loam with pH 6.5 to 7.2.[4] The plant produces two types of subterranean rhizomes. Under long-daylength conditions, rhizomes grow horizontally and then turn upwards forming daughter plants. Under short-daylength conditions, the rhizomes grow downward and produce a corm at the tip.[3][1] The photoperiod also significantly influences how fast the corms grow. Corms begin to develop much more slowly if the photoperiod exceeds 12 hours.[5] The corms are also the propagating material.[1] Alternatively, transplants can be used.[2] Machinery such as tractor-mounted vegetable planters can be used for plantation.[1]

Plant nutrition[edit]

Nitrogen addition is beneficial for corm production, applying a dose before planting and another dose when corms begin to enlarge.[1] To further improve nutrient levels, Potassium and Phosphorous mineral fertilizers can be used before planting, where the N:P:K uptake ratio is 1.00:0.50:1.75.[1] Also organic mulch, especially mushroom compost, shows good results.[1]

Harvest[edit]

Once the corms turn dark brown, they should be harvested.[1] If left in the soil after this point in time, corms will get sweeter, however shelf life will decline.[1] The corms can be harvested using a modified gladioli corm harvester once the paddy is drained.[2] Alternatively, a "water-suction harvester" can be used without the need to drain the paddy.[1] The corms have to be washed after harvest and brushed once they are dry.[2]

Yield[edit]

The per plant yield was described at 2.3kg/season (fresh matter).[6] In China, yields are reported between 20-40t/ha[3], while in the United States a range between 47-85t/ha has been mentioned.[6]

Storage[edit]

The harvested corms are best stored at 4°C. At this temperature, transpiration and thus weight loss are minimized.[1] This will also delay sprouting and minimize deterioration resulting from small injuries.[1] Corms should not be stored at temperatures above 13.6°C as otherwise the corms will begin to sprout.[1] If the corms need to be stored longer term, they can also be kept in a solution of 1000 ppm sodium hypochlorite.[7]

Pests[edit]

Chinese water chestnut ist usually not very prone to pests[2], nevertheless some animals and fungi may attack the plant: Water fowl may damage the stems and corms, especially when plants are young.[1] Similarly, rodents and grazing animals pose a threat to the Chinese water chestnut, which may be discouraged by keeping the paddy inundated.[1] Fly larvae (Trichoptera sp.) and other leaf-eating caterpillars also feed on the stems. However, unless complete defoliation below the waterline occurs, the plants can normally tolerate this damage.[1] Plant hoppers (Fulgoridae) and scale insects feed on plant sap and may cause subsequent death.[1] Other pests represent nematodes Ditylenchus spp. and Dolichodorus heterocephalus.[3] Fungal species can also attack the Chinese water chestnut. In warmer climates, a rust is caused by uromyces[1] and Cylindrosporium eleocharidis is causing stem blight.[8]

(To be included in introduction)[edit]

The corms contain the antibiotic agent puchiin[3][9], which is stable to high temperature.[10]

Apart from the edible corms, the leaves can be used for cattlefeed, mulch or compost.[6]

References[edit]

  1. ^ a b c d e f g h i j k l m n o p q r s Kleinhenz, Volker; Lodge, Geoff; Midmore, David (2001). "A Grower's Guide to Cultivating Chinese Waterchestnut in Australia". Rural Industries Research and Development Corporation. Retrieved 15 November 2016.
  2. ^ a b c d e "Chinese water chestnuts in Western Australia". Department of Agriculture and Food. Retrieved 16 November 2016.
  3. ^ a b c d e Kay, Daisy E.; Gooding, E. G. B. (1987). Crop and Product Digest N°2 - Root Crops, 2nd Edition. London: Trop.Dev. Res. Inst.{{cite book}}: CS1 maint: date and year (link)
  4. ^ "Waterchestnuts Growing Information". greenharvest.com.au/. greenharvest.com.au/. Retrieved 16 November 2016.
  5. ^ Li, Mei; Kleinhenz, V.; Lyall, T.; Midmore, D.J. (7 November 2015). "Response of Chinese water chestnut ( (Burm. f.) Hensch) to photoperiod". The Journal of Horticultural Science and Biotechnology. 75 (1): 72–78. doi:10.1080/14620316.2000.11511203.
  6. ^ a b c Morton, J.F.; Sanchez, C.A.; Snyder, G.H. (1988). "Chinese waterchestnut in florida - past, present, and future" (PDF). Proc. Fla. State Hort. Soc (101): 139–144. Retrieved 15 November 2016.
  7. ^ Kanes, C.A.; Vines, H.M. (June 1977). "STORAGE CONDITIONS FOR CHINESE WATER CHESTNUTS, ELEOCHARIS DULCIS (BURM F.) TRIN". Acta Horticulturae (62): 151–160. doi:10.17660/ActaHortic.1977.62.15.
  8. ^ Pandey, A.K. (2011). Aquatic vegetables (1st ed. ed.). Udaipur: Agrotech Pub. Academy. ISBN 9788183211970. {{cite book}}: |edition= has extra text (help)
  9. ^ Hodge, W. H. (January 1956). "Chinese water chestnut or matai—A Paddy Crop of China". Economic Botany. 10 (1): 49–65. doi:10.1007/BF02985317.
  10. ^ Hao, Shu-xian; Liu, Xin; Zhao, Li-chao; Chen, Yong-quan (2005). "Study on the Effects of Puchiin Extract Antimicrobial Roperties". Food Science.

End of new section agronomic properties. Chcrop (talk) 12:55, 30 November 2016 (UTC)[reply]

Plant Properties[edit]

Is it an annual or perennial in the wild? Or, if neither, how long does the plant live? What is the DTM (days to maturity) from a corm that has not sprouted to the finished plant for harvest?Starhistory22 (talk) 08:21, 5 May 2017 (UTC)[reply]

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