Possibilities of wheat farming on soils contaminated with heavy metals in the region of NFMV – Plovdiv, Bulgaria

Ivanova, Miroslava; Dospatliev, Lilko; Stoyanova, Antoniya; Valchev, N.

doi:10.15547/artte.2017.02.008

Cited by 2 publications

(2 citation statements)

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“…Harvesting of cereals is one of the main activities in agriculture and has to be carried out for a short period of time -a maximum of 10-12 days in order to avoid high losses from spillage of the grain and to reduce the risk of harvest destruction from natural conditions [1]. Moreover, some authors have identified options for growing the grain crop [2]. Of great importance in harvesting cereals is the overall logistics of the process, as well as the proper organization [3].…”

Section: Introductionmentioning

confidence: 99%

Study on the Duration of Operations Performed by Transport Vehicles During Unloading of the Grain Harvester Hopper

Tihanov¹

2018

ARTTE

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Unloading time of the harvester hopper at standstill depends also on the duration of the operations performed by the transport vehicle as time from the commencement of the harvester signalling to the start of the transport vehicle and the time from the start of the transport vehicle till its arrival under the unloading screw of the grain harvester. The time measuring of the operations established that the average time of commencement of the harvester signalling until the start of the transport vehicle was 215.5 s, and the time for moving of the transport vehicle to the grain harvester was 222 s. It was found that in 49% of the duration of the operations the drivers of the transport vehicles wait before going to the grain harvester (from the total of 437.5 s). This is due to the incorrect setting of the time of commencement of the first level signalling, which prevents drivers from starting and respectively arriving at the exact moment at the harvesters. It has also been found that the unloading of the harvester grain hopper takes place immediately after the arrival of the transport vehicles at it and therefore a non-filled hopper is unloaded. As a result, about 1 m³ of the harvester hopper is not used and also the number of its stops for unloading increase by about 11%, practically reducing its productivity. Keywords: grain harvester, unloading the grain harvester hopper, productivity, signaling about the grain level in the hopper, joint work of harvester and transport vehicle. ARTTEApplied Researches in Technics, Technologies and Education

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Section: Introductionmentioning

confidence: 99%

Study on the Duration of Operations Performed by Transport Vehicles During Unloading of the Grain Harvester Hopper

Tihanov¹

2018

ARTTE

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“…The difference between biological and actual yields in some cases reaches 30-40% [4]. Moreover, some authors have identified options for growing the grain crop-wheat on soils contaminated [5]. This is supported by the fact that grains accumulate Pb, Zn and Cd in amounts exceeding the maximum permissible limits and could pose a risk for human health.…”

Section: Introductionmentioning

confidence: 99%

Study on the Effect of the Type of Full Hopper Signalling Used in Grain Harvesters on the Time for the Grain Hopper Unloading

Tihanov¹

2018

ARTTE

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The paper has established the length of the time for unloading hoppers in harvesters using a different signaling mode for full hopper: without automatic signalling - 245.35 s; with one level of automatic signalling - 224.5 s; with two levels of automatic signalling - 208.82 s and for harvesters unloading in the vehicle located at the end of the field - 301.46 s. Dispersion analysis has been carried out proving the effect of the type of signalling for full hopper used on the total time for unloading the hopper at a significance level of a = 0.05. Through it the interaction between the factor: type of signalling used on the time for unloading the hopper tp has also been established.

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Possibilities of wheat farming on soils contaminated with heavy metals in the region of NFMV – Plovdiv, Bulgaria

Abstract: Abstract:The subject of present comparative study in the region of the NFMW Plovdiv, Bulgaria

Cited by 2 publications

References 20 publications

Study on the Duration of Operations Performed by Transport Vehicles During Unloading of the Grain Harvester Hopper

Study on the Duration of Operations Performed by Transport Vehicles During Unloading of the Grain Harvester Hopper

Study on the Effect of the Type of Full Hopper Signalling Used in Grain Harvesters on the Time for the Grain Hopper Unloading

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