Preprint Article Version 1 NOT YET PEER-REVIEWED

Soil Tillage Systems and Wheat Yield in Climate Change Scenarios

Version 1 : Received: 2 August 2016 / Approved: 2 August 2016 / Online: 2 August 2016 (12:50:33 CEST)

A peer-reviewed article of this Preprint also exists.

Servadio, P.; Bergonzoli, S.; Beni, C. Soil Tillage Systems and Wheat Yield under Climate Change Scenarios. Agronomy 2016, 6, 43. Servadio, P.; Bergonzoli, S.; Beni, C. Soil Tillage Systems and Wheat Yield under Climate Change Scenarios. Agronomy 2016, 6, 43.

Journal reference: Agronomy 2016, 6, 43
DOI: 10.3390/agronomy6030043

Abstract

In this study the effects of three different main preparatory tillage operations [ploughing at 0.4 m (P40) and 0.20 m (P20) depth and minimum tillage at 0.20 m depth (MT) each of them carried out at two different soil water contents (WC) [low, 58% (LH) and high, 80% (HH) of field capacity] were investigated. The results obtained in this research show high values of soil strength in term of Penetration resistance (CI) and shear strength (SS) particularly in deeper soil layers at lower water content. Fossil-fuel energy requirements both for P40 LH and P20 LH were 25 and 35% higher with respect to the HH treatments and tractor slip were very high (P40 LH = 32.4%) with respect to the P40 HH treatment (16%). Therefore soil water content had significantly influenced tractor performance during soil ploughing, particularly at 0.40 m depth while MT was not influenced at all. A significant correlation between grain yield and soil penetration resistance was found highlighting how soil strength may be good indicator of its productivity. Obtained results during these field tests allowed considering MT and P20 treatments more suitable for this type of soil in climate change scenarios.

Subject Areas

soil tillage; tractors; soil water content; physical soil properties; GPS; energy requirement; CO2 emission

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