Odziv sort koruze (Zea mays L.) na razmik med setvenimi vrstami in vpliv plevela

Gholamreza MOHAMMADI, Mehdi NOOKANI, Hamidreza MOHAMMADDOUST, Danial KAHRIZI

Povzetek


V raziskavi je bil preučevan vpliv razmika med setvenimi vrstami in zapleveljenostjo pri treh sortah koruze na Research Farm of Agricultural and Natural Resources Faculty, Razi University, Kermanshah, Iran, v letu 2011. Poskus je bil izveden kot popolni naključni bločni poskus z deljenkami s tremi ponovitvami. Faktorje so predstavljali tri sorte koruze ('KSC 704', 'Simon' in 'Maxima') in trije razmiki med setvenimi vrstami (45, 60 in 75 cm) v razmerah brez plevela in s plevelom v celotni rastni sezoni. Rezultati so pokazali, da je bila največja masa plevelov pri vseh treh sortah pri razmiku setvenih vrst 75 cm. Zapleveljenost skozi celotno rastno sezono je zmanjšala pridelek zrnja koruze za 20 %. Te razmere so tudi značilno zmanjšale posamezne komponente pridelka razen mase 100-zrn. Povečan razmik med vrstami je povečal gostoto plevela, kar je zmanjšalo pridelek koruze za 16.5 %. Sorte koruze so se značilno razlikovale v številu zrn na storž in v masi 100-zrn, pri čemer sta imeli 'KSC 704' in 'Simon' največji vrednosti teh dveh komponent pridelka.Kljub temu se število storžev na rastlino in pridelek zrnja nista statistično značilno raziskovala med sortami, preučevanimi v tej raziskavi.

Ključne besede


koruza; kompeticija; 'KSC 704'; 'Maxima'; 'Simon'; plevel; pridelek; komponente pridelka

Celotno besedilo:

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DOI: http://dx.doi.org/10.14720/aas.2018.111.3.01

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