The effect of undersowing time of clover crops and weeds on silage maize yields

Plant, Soil and Environment

Jamriška P.:¹ 

关键词: silage maize;    time of undersowing of clover crops;    weeds;    effect on the yield;   

DOI  :  

学科分类：农业科学（综合）

来源: Czech Academy of Agricultural Sciences

【 摘 要 】

In field experiments conducted on loamy luvic chernozem (170 m altitude, 48°34’ N 17°45’ E), the effects of undersowing time (5 days after maize was sown and into emerged stand) of lucerne, red clover and sainfoin on silage maize dry matter have been studied. The total dry matter yields were affected by time of undersowing of clover crops. The stands undersown after emergence of maize gave higher yields than former time of undersowing. The late time of undersowing improved conditions for growth of maize and formation of its yield. The number of maize plants had already insignificant effect on yields there. The dry matter weight, height, and number of maize plants and dry matter weight of weeds were main factors of formation of the total yield. The depressive effect of weeds on total yields was applied indirectly particularly through the decrease in the dry matter weight of maize plants. The path analysis in spite of the insignificant effect of clover crops undersown on total yields indicated some differences in the formation of yield. The number of maize plants reached the significant level of effect on yield only at stands with red clover undersown. On the contrary, the negative correlation of weeds dry matter weight with the number of maize plants reached level of significance in stands with lucerne undersown only.Keywords:silage maize; time of undersowing of clover crops; weeds; effect on the yielddownload PDFImpact factor (Web of Science �? Thomson Reuters)2016: 1.2255-Year Impact Factor: 1.463SJR (SCImago Journal Rank �? SCOPUS)2016: 0.616 �? Q2 (Soil Science)Similarity CheckAll the submitted manuscripts are checked by the CrossRef Similarity Check.Abstracts are comprised in the databasesISI Web of KnowledgeSM, Web of Science®, Science Citation Index Expanded®, Agricola, Agrindex of AGRIS/FAO databáze, AGRIS International, CAB Abstracts, Current Contents®/Agriculture, Biology and Environmental Sciences, Czech Agricultural and Food Bibliography, Food Science and Technology Abstracts, SCOPUS, TOXLINE Plus, DOAJ (Directory of Open Access Journals), Google Scholar, CNKILicence termsAll content is made freely available for non-commercial purposes, users are allowed to copy and redistribute the material, transform, and build upon the material as long as they cite the source.Open Access PolicyThis journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.ContactMgr. Kateřina SoučkováExecutive Editorphone: + 420 606 402 207e-mail: pseAddressPlant, Soil and EnvironmentCzech Academy of Agricultural SciencesSlezská 7, 120 00 Praha 2,Czech Republic© 2017 Czech Academy of Agricultural Sciences

【 授权许可】

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