The influence of reduced tillage methods on soybean seed yield
Karol Bujak
dziekanat.agbioinz@up.lublin.plKatedra Ogólnej Uprawy Roli i Roślin, Akademia Rolnicza, Lublin (Poland)
Maria Jędruszczak
Katedra Rozwoju Rolnictwa i Agrobiznesu, Politechnika Białostocka, Białystok (Poland)
Mariusz Frant
Katedra Ogólnej Uprawy Roli i Roślin, Akademia Rolnicza, Lublin (Poland)
Abstract
A two-factorial field experiment was conducted on loess soil in the Czesławice Experimental Station in 1997–1999, with the split-plot method with four replications. Two soybean cultivars: Aldana and Polan, and five methods of soil tillage were the experimental factors. The tillage treatments were following: I conventional, II reduced — without stubble operations, III reduced to cultivator, harrow and then subsoiler application, IV reduced with direct sowing of white mustard and harvest of the mustard in late autumn followed by deep moldboard plough, V reduced to direct sowing of white mustard, which was sprayed with Reglone (diquat) in spring and finally soybean was sown with the direct sowing method. The statistically elaborated results proved the same level of soybean yielding (1.72–1.84 t of seed per ha) under all the tillage systems where plough was applied before winter (the systems I, II and IV). In comparison to the best treatments I and IV, the direct soybean sowing (V) caused a remarkable seed yield reduction (15% and 16%, accordingly). The Aldana cultivar’s yield (1.93 t·ha-1) was almost 28% higher than that of the Polan cultivar (1.51 t·ha-1). Generally, field emergence of soybean was low (mean about 46% of the assumed).
Keywords:
soybean, tillage systems, yieldReferences
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Authors
Karol Bujakdziekanat.agbioinz@up.lublin.pl
Katedra Ogólnej Uprawy Roli i Roślin, Akademia Rolnicza, Lublin Poland
Authors
Maria JędruszczakKatedra Rozwoju Rolnictwa i Agrobiznesu, Politechnika Białostocka, Białystok Poland
Authors
Mariusz FrantKatedra Ogólnej Uprawy Roli i Roślin, Akademia Rolnicza, Lublin Poland
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