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Timeliness costs in grain and forage production systems

Gunnarsson, Carina (2008). Timeliness costs in grain and forage production systems. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2008:102
ISBN 978-91-86195-35-9
[Doctoral thesis]

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Abstract

With increasing prices for energy, fertiliser and feed concentrates, it is becoming increasingly important for farmers to produce high quality feed while minimising costs. For a Swedish farm, costs for machinery make up about 25% of the production costs. The economic consequences of performing a field operation at non-optimal time are called timeliness costs. They are caused by reductions in crop value and can be reduced by increasing machine capacity. To improve the basis for optimal selection of field machinery in agriculture, methods were developed and applied for calculation of timeliness costs in terms of crop quality and quantity losses at non-optimum operation times. Timeliness costs for grain that accounted for crop quantity and quality losses at delayed sowing and harvesting were higher per kg for organic grain than for conventional. The main differences in timeliness costs resulted from two counteracting factors – lower yields and higher product prices in organic production. Higher timeliness costs resulted in a larger combine harvester with higher capacity being economically optimal for the organic system. A method was developed for valuing forage for milk production with respect to crop yield increases and feed value decreases due to delayed time of harvesting. The results showed significantly higher timeliness cost factors in € per ha and day for the first cut compared with regrowth. Timeliness cost factors also varied greatly between years. Harvesting costs in terms of timeliness were calculated for different machinery systems and capacities. Harvesting costs decreased with increasing forage area up to a certain threshold area, beyond which decreasing machine costs were outweighed by increasing timeliness costs due to longer duration of harvest. Using machine contractors or machine cooperatives decreased harvesting costs, particularly for small forage areas, due to increased annual use of the machines. However, to avoid high timeliness costs delays in harvesting must be avoided. Forage was also valued in terms of biogas production by accounting for changes in yield and methane production with varying cutting date. Timeliness costs were small as long as harvesting was not delayed. Matching capacity to requirements is important in avoiding costly overcapacity and minimising costs.

Authors/Creators:Gunnarsson, Carina
Title:Timeliness costs in grain and forage production systems
Year of publishing :2008
Volume:2008:102
Number of Pages:56
Papers/manuscripts:
NumberReferences
ALLI Gunnarsson, C. & Hansson, P-A. (2004). Optimisation of field machinery for an arable farm converting to organic farming. Agricultural Systems 80, 85-103. II Gunnarsson, C., Spörndly, R. & Hansson, P-A. (2005). Timeliness costs for silage harvest in conventional and organic milk production. Biosystems Engineering 92(3), 285-293. III Gunnarsson, C., Vågström, L. & Hansson, P-A. (2008). Logistics for forage harvest to biogas production - Timeliness, capacities and costs in a Swedish case study. Biomass and Bioenergy 32, 1263-1273. IV Gunnarsson, C., Spörndly, R., Rosenkvist, H., de Toro, A. & Hansson, P-A. (2008). A method to calculate timeliness costs in forage harvesting illustrated using harvesting systems in Sweden (submitted to Grass and Forage Science).
Place of Publication:Uppsala
ISBN for printed version:978-91-86195-35-9
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agrovoc terms:grain crops, feed crops, farm equipment, harvesting, timing, crop yield, quality, organic agriculture, intensive farming, economic analysis, valuation, linear programming, sweden
Keywords:Crop valuation, machinery selection, harvest, quality, milk, biogas, organic production, annual variation, linear programming
URN:NBN:urn:nbn:se:slu:epsilon-2679
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-2679
ID Code:1917
Department:(NL, NJ) > Dept. of Energy and Technology
Deposited By: Carina Gunnarsson
Deposited On:08 Jan 2009 00:00
Metadata Last Modified:02 Dec 2014 10:15

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