Golińska, Barbara

Goliński, Piotr

Kozłowski, S.

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings XXI International Grassland Congress / VIII International Rangeland Congress Effect of Boron Fertilization on Seed Yield of White Clover Piotr Goliński Agricultural University of Poznań, Poland S. Kozłowski Agricultural University of Poznań, Poland Barbara Golińska Agricultural University of Poznań, Poland 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/21/14-1/16 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 ]564　 瞯 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　Grasslands/Rangelands Production Systems——— Seed Science and TechnologyEffect of boron fertilization on seed yield of white cloverP . Goliński , S . Koz膊owski and B . GolińskaDepartment o f G rassland Sciences , A gricultural University o f Poznań , Woj ska Polskiego 38/42 , 60‐627 Poznań , Poland E‐mail : p golinsk＠ au .poz nan .p lKey words :white clover ,seed production ,boron ,fertilizationIntroduction One of the preconditions of widespread utilisation of white clover in grassland management is the availability on themarket of seeds of valuable cultivars ( Woodfield et al . , ２００４ ) . However , there are many problems in the process of thereproduction of white clover cultivars resulting in low seed yields obtained on plantations . Therefore , further technologyimprovement of white clover cultivation for seeds is a necessity . One of the factors stimulating the seed potentials of whiteclover is fertilization and from among microelements , appropriate levels of soil boron appears to be essential for the productionof seeds of good quality ( Marshall et al . , １９９１) . The aim of the study was to evaluate the effects of boron fertilization on seedyield and selected morphological and biological features of white clover .Materials and methods During ２００２‐２００４ , in Brody (５２°２６′N , １６° １８′E) an experiment was set up in a plot block‐design withfour replicates ( plot size １５ .５ m ( １０ m) to evaluate the effect of boron fertilization on the seed yield and its components ofwhite clover of Polish cv . Wota . The experiment was situated on Albic Luvisols soils ( pHKCl‐５ .３ , Nt‐０ .８２％ , P２O５‐１３０ mg/kg , K２O‐１４９ mg/ kg , Mg‐７５ mg / kg , B‐０ .２ mg / kg ) . White clover seeds were sown in the summer of ２００２ in pure sowing .Standard technology of cultivation of this species for seeds was employed . Fertiliser was applied in autumn each year at a rateof : P２O５‐６０ kg / ha , K２O‐６０ kg / ha . Additionally , the dose of boron in the amount of ２ kg / ha was applied in the first decade ofApril and was administered in the form of spray using for this purpose a Bormax ( boron ethanolamine) preparation containing１１％ boron soluble in water . The yearly mean temperature and total precipitation for ２００２ , ２００３ and ２００４ was ９ .７ , ９ .３ , ９ .１℃ and ７５０ .５ , ４１０ .０ , ５８４ .７ mm , respectively . The effects of boron fertilization were evaluated on the basis of biological andmorphological features of white clover . Inflorescences density was determined using fixed quadrate method . Before harvest theplant material was sampled and biometrical analyses of inflorescences were performed . Seed yield was measured on an area of１５ .５ m２ using plot harvester . Tests of the main effects were performed by F‐tests . Means were separated by the LSD and weredeclared different at the P＜ ０ .０５ level .Results Following the foliar application of boron , the seed yield of white clover plants increased both in the first and secondyears of utilisation by ２０ .０％ and ２４ .４％ , respectively . Boron was found to determine the vitality of white clover plants whichresulted in the development of a greater number of inflorescences calculated per unit of area , especially in the second year ofcultivation for seeds by ２６ .７％ . The important role , from the physiological point of view , of this microelement in the processof grow th and development of white clover plants in its cultivation for seeds is further confirmed by the development in theinflorescences of clover of a greater number of pods as well as a greater number of seeds in pods . The observed better setting ofseeds in pods , in comparison with the control , by ９ .５ to １８ .８％ , depending on the year of utilisation , was probably the effectof the role of boron in facilitating pollen tube elongation , which is essential for syngamy and the resulting seed set anddevelopment to occur .Table 1 E f f ect o f boron f ertiliz ation on seed y ield and its components o f white clover in two years o f harvest .Year after sowing １st LSD０ 殚.０５ ２nd LSD０ 哌.０５Boron fertilization ( kg / ha) ０ 2２ z０  ２ SNo . of inflorescences per m２ 滗７４５ `７５８ èns ６２６ 8７９３ 亖４２ 　.３No . of pods per inflorescence ８６  .１ ９２ c.２ ４ }.３６ ６０ 篌.８ ６２ <.３ nsNo . of seeds per pod ２  .１ ２ L.３ ０ }.１６ １ 苘.６ １ %.９ ０ s.１８Seed yield ( kg / ha) ３５８ 2.３ ４２９ z.９ ３８ 敂.９９ １６２  .０ ２０１ S.２ ３４ 妸.６２１０００ seeds weight ( g ) ０ 种.７３６ ０  .７３０ ns ０ �.７３３ ０ 鼢.７３５ nsConclusions The foliar additional feeding of white clover plants in early spring by boron exerted a positive influence on thenumber of heads per unit of area , number of pods per head and the number of seeds per pod . The advantageous inflorescencestructure on surfaces fertilised by boron increased the seed yields by ２０ .０ to ２４ .４％ in comparison with the control treatment .ReferencesMarshall , A .H . , Khrbeet , H .K . , Hides , D .H . , １９９１ . Influence of boron on the reproductive grow th of white clover( T ri f olium repens L .) cultivars . A nnals o f A p p lied Biology １１９ , ５４１‐５４８ .Woodfield , D .R . , Jahufer , M .Z .Z . , Ford , J .L . , Van Hanja , N . , Johnston , D . , Van Kruijssen , L . , Caradus , J .R . ,２００４ . Breeding white clover ( T ri f olium repens L .) for Europe : successes and challenges . Grassland Science in Europe ９ ,３９２‐３９４ .

Effect of Boron Fertilization on Seed Yield of White Clover

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Effect of Boron Fertilization on Seed Yield of White Clover

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