Abstract
Machinery traffic in sugarcane (Saccharumsp.) plantations reduces soil physical quality, and hinders both root development and crop yield. We evaluated the physical quality of an Oxisol and the development of sugarcane roots under controlled traffic. The treatments assessed were: without controlled machinery traffic (WCT), controlled traffic by adjusting the tractor and infield wagons to a 3.0 m track width with the operator guiding the machinery (CT1) and the previous treatment using real time kinematic / global positioning system (RTK / GPS) precision auto steer (CT2). Soil samples were collected from the planting rows, seedbed and inter-row center to determine the least limiting water range (LLWR) and soil porosity from scanned 2-D images. The root dry mass was sampled from monoliths, separated from the soil by washing through a 2-mm sieve and dried in an oven. A higher LLWR was observed in the planting row under CT1 and CT2 than under WCT. The planting row had a predominance of complex pores with a diameter > 500 µm in the 0.15-0.27 m depth layer under CT1 and CT2. In the planting rows under WCT, the root dry mass was only 44 % of that measured under CT2. Benefits regarding soil physical quality and growth roots were observed when the tractor-wagon track width was adjusted based on the sugarcane spacing using either precision auto steering or manual operation of the machinery.
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Claims 4
Claim · model-written summary
Controlled traffic treatments CT1 and CT2 increased planting-row LLWR relative to WCT.
Not reportedOrgan / stage
Verbatim
e0“A higher LLWR was observed in the planting row under CT1 and CT2 than under WCT.”
t0“sugarcane”
Claim · model-written summary
Planting rows under CT1 and CT2 had predominantly complex pores over 500 µm at 0.15-0.27 m depth.
Verbatim
e0“The planting row had a predominance of complex pores with a diameter > 500 µm in the 0.15-0.27 m depth layer under CT1 and CT2.”
t0“sugarcane”
Claim · model-written summary
Root dry mass under WCT was 44 % of that under CT2.
Verbatim
e0“In the planting rows under WCT, the root dry mass was only 44 % of that measured under CT2.”
t0“sugarcane”
Claim · model-written summary
Adjusting tractor-wagon track width to sugarcane spacing benefited soil physical quality and root growth with manual or precision steering.
- Taxon
- sugarcanet0
- Treatment
- tractor-wagon track width was adjusted based on the sugarcane spacinge0
- Outcome
- soil physical quality and growth rootse0
- Direction
- Benefitse0
- Qualifier
- either precision auto steering or manual operation of the machinerye0
Not reportedComparator
Verbatim
e0“Benefits regarding soil physical quality and growth roots were observed when the tractor-wagon track width was adjusted based on the sugarcane spacing using either precision auto steering or manual operation of the machinery.”
t0“sugarcane”
The same questions in other papers
density · quality: general · Saccharum officinarum (sugarcane)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- no effect
- no effect
- no effect
3 papers more in this group
See all 7 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.