Abstract
The performance of the tractor-seeder can be influenced by factors related to the seeder, as loads and crop. The aim of the present study was to evaluate the performance of tractor-seeder at sowing in the corn crop in function of the fertilizer systems (at presowing and at sowing) and those intercropping of crops (corn + bean-Stizolobium deeringianum, corn + bean-Cajanus cajan and corn + bean-Dolichos lab lab). The experiment was carried out at FCAV-UNESP with totally randomized delineation, on factorial scheme (2x3) with four repetitions. The use of fertilization during the pre-sowing resulted in greater displacement speed and effective field capacity in the corn sowing operation, without changing the distribution of corn seeds; however, it demanded more power and volumetric and weight hourly consumption of the tractor fuel.
Highlights
The adoption of No-tillage Systems (NTS) is essential for the sustainability of various agricultural activities
The performance of the tractor-seeder set in intercropping of crops remained constant when evaluating the actual speed of displacement and field capacity, obtaining, respectively, 6.4 and 6.3 km h-1, and 3.0 ha h-1 (Reis et al, 2007)
According to Ch ioderoli et al (2012), when evaluating the operational performance of the tractor-seeder set in the soybean crop on corn straw intercropped with two forage species (Urochloa brizantha and Urochloa ruzizienses), verified greater slippage on the front wheel of the tractor (20.3%) in the cultivation system (Urochloa in the interline of the corn sown together with the cover fertilizer in the V4 stage) - MBC, attributing this result to the largest quantity of straw produced in this system in co mparison to the intercropped corn - C, as well as to the dynamic distribution of the weight of the tractor (40% front axle and 60% rear axle), which, coupled with the type of tire, may have altered the front wheel drive, increasing slippage
Summary
The adoption of No-tillage Systems (NTS) is essential for the sustainability of various agricultural activities. 2018 mach ines in function of these factors can represent important informat ion aiming to subsidize the selection of agricultural systems that increase the capacity of the mach ines and reduce the energy expenditure at sowing operations (Furlani et al, 2004) and soil preparation (Ch ioderoli et al, 2010) Another factor that must be evaluated at sowing is the uniformity of seed distribution, wh ich is obtained by the correct regulation of the tractor-seeder and suitability, and it has been reported as one of the ways to increase the productivity of certain crops, among which corn stands out as the most representative (Weirich Neto et al, 2015). The aim of this study was to evaluate the performance of the tractor-seeder set in the NTS, in function of the fertilizat ion systems (pre-sowing and at sowing) and with corn intercropping (bean-Stizolobium deeringianum, bean-Cajanus cajan and bean-Dolichos lab lab)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
