Effect of wheat straw management on weed population in wheat-sugar beet rotation
2014
Najafi, Hossein, Iranian Research Institute Of Plant Protection | Noghabi, M. Abdolahian | Baghestani, M. A.
In order to study of cultivation system and plant residue effects on weed population of sugar beet, two year experiments were conducted in 2012 and 2013 in Karaj, Iran. Experimental treatments were cultivation systems as main plot (including: conservation tillage and prevalent system) and wheat residue amounts as sub plot (including: 0, 1, 3 and 5 ton/ha) that arranged as split plot experiment with randomized complete block design and 4 replications. Weed density and dry matter and sugar beet yield were traits that evaluated in this experiment. Two years experimental results indicated that weed population was more in conservation system than prevalent system. In addition, weed dry matter were decreased with increasing of wheat residue amounts. However, the difference between 3 and 5 ton/ha was not significant. In comparison with usual field preparation system, sugar beet root yield was low in conservation tillage (45 % lower in two years). Key words: Non-chemical management
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