Year 2017, Volume 63, Issue 1

Year : 2017
Volume : 63
Issue : 1
   
Authors : Milena MOTEVA, Georgi KOSTADINOV, Velibor SPALEVIC, Veska GEORGIEVA, Vjekoslav TANASKOVIK, Natalia KOLEVA
Title : SWEET CORN - CONVENTIONAL TILLAGE VS. NO-TILLAGE IN HUMID CONDITIONS
Abstract : The goal of the paper is to compare the impact of conventional tillage and no-tillage technology on the growth, the yield and yield components of sweet corn, cultivated on chromic luvisols. A field experiment with Super Sweet 71,12 R hybrid was carried out in 2014 in the region of Sofia, Bulgaria. The impact of both systems on the total fresh ear yield, marketable fresh ear yield, total ear number, marketable ear number, single marketable fresh ear mass, marketable ear row number, one row kernel number of a marketable ear, marketable fresh ear kernel mass, plant height, leaf number per plant, ear legth, and tassel length was established. Analysis of variance was applied to all data obtained. The experiment was carried out on chromic luvisols, in a temperate-continental climate and in a very humid year. The results showed that the conventional tillage in such nature conditions have had better performance than the no-tillage technology. The yield of marketable fresh ears under conventional tillage was twice higher than that under no-tillage, i.e. 8.5 Mg/ha vs. 4.2 Mg/ha; kernel mass of a single fresh ear was with 22.6% higher, i.e. 163.8 g vs. 133.6 g, the 1000-kernel mass was with 14.4% higher, i.e. 337.2 g vs. 293.0 g. Analogously, the plants were longer and had thicker stems with greater leaf number, resulting in 12.5% greater fresh-ear length – 20.7 cm. The total fresh biomass under conventional tillage reaches 633.0 g/plant vs. 414.6 g/plant under no-tillage and the dry matter - 145.6 g vs. 103.7 g/plant. The protein content was 13.8% vs. 12.7%. The production under conventional tillage was more profitable. The price of a marketable corn ear was much lower - 0.0358 EUR/pc vs. 0.0512 EUR/pc. No-till requires precise preliminary estimation of the nature conditions and weather prognoses and cannot be recommended to very humid areas and conditions. In very humid conditions it should be applied on weed-free areas after several-year control through herbicides.
For citation : Moteva M., Kostadinov G., Spalevic V., Georgieva V., Tanaskovik V., Koleva N., (2017) Sweet corn - conventional tillage vs. no-tillage in humid conditions, Agriculture and Forestry, 63 (1): 17-25. DOI: 10.17707/AgricultForest.63.1.02
Keywords : No-till, Conventional tillage, Sweet corn, Yield, Yield components, Bulgaria
   
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ISSN 0554-5579 (Printed)
ISSN 1800-9492 (Online)
DOI : 10.17707/AgricultForest

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Volume 66 / Issue 1
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