Strip tillage and sowing: is precision planting indispensable in silage maize?

Authors

  • A. Zorzi Fattorie Novella Sentieri, 26020 Cappella Cantone (BS), Italy.
  • F. Panella Department of Agricultural, Food and Environmental Sciences, University of Perugia, Perugia, Italy.
  • G. Tosti Department of Agricultural, Food and Environmental Sciences, University of Perugia, Perugia, Italy.
  • M. Trevini Agronomist, 25015 Desenzano del Garda (BS), Italy.
  • P. Benincasa Department of Agricultural, Food and Environmental Sciences, University of Perugia, Perugia, Italy.
Abstract:

This work was aimed at assessing whether in silage maize it is possible to replace precisionplanting with a volumetric seeding in the perspective of developing hybrid machines to strip tilland sow both high density crops like winter cereals and low density crops like maize. This inorder to reduce the number of machines in the farm, simplify logistics and reduce amortizationcosts. Two experiments were carried out in 2014 and 2015. In the first year, two tillage-sowingtreatments were compared in a randomized block design with 5 replicates: 1) strip-tillage plusvolumetric band (0.1 m wide) seeding (ST-VBS) carried out by a Claydon Hybrid 6M at interaxle spacing of 0.6 m and with 35 kg ha-1 of seeds; 2) no-tillage plus precision line planting(NT-PLP) carried out by a sod drill Kinze 3100 at row distance of 0.71 m. In the second year,the same two treatments of 2014 were applied, but a third tillage-sowing treatment was alsoincluded: strip tillage plus precision line planting (ST-PLP) carried out by a strip tiller KhunStriger at inter axle spacing of 0.71 m plus the Kinze 3100, respectively, in two passages.In 2015, a randomized block design with 3 replicates was adopted. Both in 2014 and 2015treatments did not differ significantly for actual seeding density and final plant density,individual plant growth indices (plant height, stem diameter, FW, DW) at early stem elongation,flowering and final harvest, neither for total FW and DW yield, nor for biomass composition(starch, protein, lipids, fibre and ash concentrations) at harvest. Results demonstrate that a silagemaize crop can perform successfully when established by strip tillage associated withvolumetric band seeding. If similar results are demonstrated for high density crops, this willsupport the strategy of developing hybrid machines to strip till and sow both high density cropsand silage maize, which is relevant for many farming systems devoted to forage and biomassproduction for agro-energy purposes.

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Journal title

volume 11  issue 4

pages  577- 588

publication date 2017-09-01

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