Han, Jianguo

Li, Peng

Ma, Chunhui

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings XXI International Grassland Congress / VIII International Rangeland Congress Study on Zoysiagrass (Zoysia japonica Steud.) Seed Production Technology Chunhui Ma Tarim University, China Jianguo Han China Agricultural University, China Peng Li China Agricultural University, China Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/14-1/47 The XXI International Grassland Congress / VIII International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. 瞯 ]596　 瞯 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　Grasslands/Rangelands Production Systems——— Seed Science and TechnologyStudy on zoysiagrass ( Zoysia j aponica Steud .) seed production technologyMA Chun‐hui1 HA N Jian‐guo2 L i Peng21 College o f A nimal Science and Technology , Tarim University , A lar , X in j iang 843300 , chunhuima＠ 126 .com ; 2 Instituteo f G rassland Science , China A gricultural University , Bei j ing 100094 , grasslab＠ public3 .bta .net .cnKey words :Zoysiagrass ( Zoysia j aponica) ,nitrogen fertilizer ,seed ,seed production ,seed yieldIntroduction Zoysiagrass ( Zoysia j aponica) is a perennial grass indigenous to the Orient . Zoysiagrass is well known for itswinter‐hardiness , drought resistant , trample hardiness and high temperature tolerance . Zoysiagrass has been popular becauseof its excellent performance also . Zoysiagrass seed yield in natural grassland is less than １５０kg / hm２ . Therefore the study onseed production of zoysiagrass is needed .Material and methods The experiment was conducted in Qingdao , Shandong province with longitude of １１９°４６′E , latitude of ３６°１０′N and altitude of ５０ m above sea level . The experiment material was �Zoysia japonica Steud cv . Qingdao�registered in１９９０ . The trial plots were seeded ( sowing rate at ５０kg / hm２ ) w ith ２０cm row spacing on August １５ , ２００１ . The field plantingconsisted of １５ plots with ５５ m２ （２２m × ５ .５m) per plot . The fertilization experiment was three replicates included for the fivetreatment( Autumn/Spring ) (０ /０ ,２０ /１０ ,４０ /２０ ,６０ /３０ ,２０ /４０ kg N / hm２ ) .Results The seed yields of zoysiagrass with the fertilization treatments in ２００３ and ２００４ were significantly higher than that ofcontrol ( P ≤ ０ .０１) . The highest seed yields (８４４ .５ kg / hm２ and ７８９ .８ kg / hm２ in ２００３ and in ２００４ respectively ) were attainedat a fertilization rate of ２０ kg N ha‐１ and １０ kg N ha‐１ in autumn and spring (３０ kg N ha‐１ in total) . With the seeds maturing ,the percentage of shriveled seed and seed moisture content( SMC) decreased gradually . The equation of the changing percentageof shriveled seed was : Y ＝ ０ .３７６１x２‐４ .６３２５x ＋ ２３ .６７ ( R２ ＝ ０ ．９７４２ ，x :SMC) . As the zoysiagrass seed developed , the seeddry weight and yield were increased gradually . The seed yield of ３０ kg N ha‐１ (２０ /１０) application treatment on the ３６th day afterpeak anthesis was the highest , and its SMC and percentage of shriveled seed were ２６ .６９％ and ９ .６８％ , respectively .Conclusions The seed yield was improved at a suitable N‐fertilizer rate . The highest seed yields were harvested at a fertilizer rateof ２０ kg N ha‐１ and １０ kg N ha‐１ in autumn and spring (３０ kg N ha‐１ in total) . The optimum time for harvesting zoysiagrass wasthe ３６th day after peak anthesis ( about June １５) in the trial , with seed moisture content being ２６‐２８％ .ReferencesDong H D , Gong L J . Ecology o f Zoysia j aponica and Ex p loitation and A p p lication o f its Resources in China . Beijing :China Forestry Press , ２００１ , １０５‐１１３ . ( in Chinese)White R H , Engelke S J , Anderson S J , Ruemmele B A , Marcum K B , Taylor G R . Zoysiagrass and water relations . CropScience , ２００１ , ４１ (１) :１３３‐１３８ .

Study on Zoysiagrass (\u3ci\u3eZoysia japonica\u3c/i\u3e Steud.) Seed Production Technology

https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=3543&amp;context=igc

Study on Zoysiagrass (\u3ci\u3eZoysia japonica\u3c/i\u3e Steud.) Seed Production Technology

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