Výsledky vyhledávání - "Roger T. Spagnolo"

Akademický článek

HEAT-APPLICATOR MACHINE FOR WEED CONTROL

Autor: Roger T. Spagnolo, Tiago V. Custódio, César S. de Morais, Ângelo V. dos Reis, Antônio L. T. Machado

Publikováno v: Engenharia Agrícola, Vol 40, Iss 5, Pp 595-600 (2020)

ABSTRACT Pesticide environmental risks and increased weed resistance have encouraged studies for alternatives to herbicides. Among these are weed thermal control methods by controlled heat application machines. Thus, this study aimed to test a protot

Externí odkaz: https://doaj.org/article/6db0fb9cef0a4827b7f2297f58244dbc

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Akademický článek

PERFORMANCE OF HELICAL METERING MECHANISMS IN THE APPLICATION OF MICROGRANULAR FERTILIZER

Autor: Roger T. Spagnolo, David P. da Rosa, Marivan da S. Pinho, Cheiner S. Schiavon, Diego K. Schmechel

Publikováno v: Engenharia Agrícola, Vol 40, Iss 4, Pp 481-488 (2020)

ABSTRACT The use of microgranular fertilizers is currently increasing, with low application rates as an obstacle in the mechanization. This study aimed to verify the performance of helical metering mechanisms using microgranular fertilizer. Four diff

Externí odkaz: https://doaj.org/article/0a2905dfed2045839195d3d9f4c08531

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Akademický článek

Fuel consumption of a tractor in function of wear, of ballasting and tire inflation pressure Consumo de combustível de um trator em função do desgaste, da lastragem e pressão de inflação dos pneus

Autor: Roger T. Spagnolo, Carlos E. S. Volpato, Jackson A. Barbosa, Marcos A. Z. Palma, Murilo M. de Barros

Publikováno v: Engenharia Agrícola, Vol 32, Iss 1, Pp 131-139 (2012)

When using appropriate inflation pressures and load capacity (ballast), it may obtain a higher yield and prolongation of the life of the tire, besides it may minimize the problems of loss of traction, increased slippage and fuel consumption. This stu

Externí odkaz: https://doaj.org/article/8e0c3507176746deb9226d008ccba38a

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Models for predicting the performance of fertilizer metering in seed cum fertilizer drill

Autor: Roger T. Spagnolo, David P. da Rosa, Marivan da S. Pinho, Cheiner S. Schiavon, Diego Schmechel

Publikováno v: Revista Brasileira de Engenharia Agrícola e Ambiental, Volume: 25, Issue: 1, Pages: 51-57, Published: 30 NOV 2020
Revista Brasileira de Engenharia Agrícola e Ambiental v.25 n.1 2021
Revista Brasileira de Engenharia Agrícola e Ambiental
Universidade Federal de Campina Grande (UFCG)
instacron:UFCG
Revista Brasileira de Engenharia Agrícola e Ambiental-Agriambi, Vol 25, Iss 1, Pp 51-57 (2020)

This study aimed to establish mathematical models that predict the performance of helical fertilizer metering according to the longitudinal and transverse inclinations, angular speed, and helical pitch. Laboratory tests were carried out with helical

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42876063f10798bf8d116a9ffb3a5696
https://doi.org/10.1590/1807-1929/agriambi.v25n1p51-57

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