Changes in Sowing Success and Grain Yield Under Different Compression Pressures Applied on Seedbed in Direct Seeded Soybean
2019
Bi̇lgi̇li̇, M Emin | Kara, Orhan | Sevi̇lmi̇s, Ugur
In this study, it is aimed to determine the wheel optimum pressure weight to providethe best seed-soil contact for for no-till soybean sowing with pneumatic precision sowing machine on ridges covered by intense stubble of previous crop maize. For this purpose, fourdifferent pressure wheel loads (P1: 6.66, P2: 7.38, P3: 8.10 and P4: 8.81 N / cm2pressure load)were applied to determine the pressure load for ideal seed-soil contact.At 0-10 cm soil depth, obtained lowest volume weight value was 1.43 gr/cm3 with P2(7.38 N/cm2) pressure application, while the highest volume weight value was 1.46 gr/cm3with P4 (8.81 N/cm2) pressure application. At the 10-20 cm soil depth, the obtained volumeweight values varied between 1.47 gr/cm3 with P1 (6.66 N/cm2) and 1,51 gr/cm3 with P4pressure loads. The fuel consumption was ranged between 0.92-1.09 l/ha. Plant emergencerates were ranged from 76.4% to 80.2%. Pressure load applications increased the plantemergence rates as well as yield. The highest soybean yield was 2 384 kg/ha which wasobtained with P3 (8.10 N/cm2 ) pressure load application.
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