Login
Toggle navigation
Home
ICPA
Conference
Abstract Management
Abstract Topic Groups
Author Instructions
Registration
Registration Information
16th ICPA - Conference Registration
Registrants Map
Hotel and Travel Information
Tour
Workshops
Exhibit Hall Map
Sponsors
Conference Program
General Outline
Oral Program
Poster Program
Student Poster Awards
Keynote
Plenary Session
Awards
Photos
Conference Survey
Proceedings
Leadership
ISPA Leadership
Officers
Past Presidents
Officer Responsibilities
Country Representatives
Communities
Community Guidance
On-Farm Experimentation
Nitrogen
Latin America
Economics
African Association for Precision Agriculture
Membership
ISPA Member Benefits
Membership Form
Events
ISPA Events
ACPA
ACPA Proceedings
AfCPA
AfCPA Proceedings
CLAP
CLAP Proceedings
ECPA
ECPA Proceedings
ICPA
ISPA Webinars
OFE
AAPA
Latin American
Robotics and Automation Symposium
Event Overview
Registration
Program
Venue
Speakers
About ISPA
Newsletters
History
Jobs
Precision Ag Definition
Agriculture Course Database Submission
Publications
ICPA Proceedings
ECPA Proceedings
Contact Us
Members
Suggestion Form
Conference
Abstract Management
Abstract Topic Groups
Author Instructions
Registration
Registration Information
16th ICPA - Conference Registration
Registrants Map
Hotel and Travel Information
Tour
Workshops
Exhibit Hall Map
Sponsors
Conference Program
General Outline
Oral Program
Poster Program
Student Poster Awards
Keynote
Plenary Session
Awards
Photos
Conference Survey
Proceedings
Proceedings
Search
Authors
Topics
Years
Types
Find matching any:
Reset
» Add more years
Add filter to result:
Spatial Dependence Of Soil Compaction In Annual Cycle Of Different Culture Of Cane Sugar For Sandy Soil
1
I. Marasca,
2
F. C. Masiero,
3
D. A. Fiorese,
1
S. S. Guerra,
1
K. P. Lancas
1. UNESP
2. IFC
3. UEMT
The Currently practiced mechanization for the production of sugar cane involves a heavy traffic of machinery and equipment. Studying the culture in its development environment generates a huge amount of information to fit the top managements and varieties for specific environments. The sugar cane cultivation has a heavy traffic of machinery and equipment, having more than 20 operations per cycle, and being more intense during harvest, providing increasing of soil compaction and accentuating these effects when realized in unsuitable soil humidity conditions. This work was carried out to evaluate the soil physical degradation in relation to the sequence of annual crop production of sugar cane, on a dark red latosol with sandy texture calculating the Soil Cone Index (CI ) in the folowing depth ranges : 0-10 , 10-20, 20-30 , 30-40 and 40-50 cm . The sugar cane productive area, belonging to Barra Grande mill, from Zilor group in Lençóis Paulista region, in São Paulo state, was evaluated during three subsequent seasons. For soil sampling it was used the Mobile Soil Sampling Unit - UMAS - belonging to Agroforestry Machinary and tire Test Center - NEMPA, Department of Rural Engineering, College of Agricultural Sciences - FCA - UNESP, Botucatu - SP. The sampling points in the areas and in subsequent crop cycles ( subsequent years), collections were made using a sampling grid of 30 x 50 m , meaning 30 meters between points following the line of sugar cane planting and 50 meters between plant rows (traffic line) for penetration resistance. The data were analyzed using geostatistical analysis. The models were adjusted by GS + 7.0 software. To analyze the degree of spatial dependence of the studed attributes, it was used the Cambardella classification, which considers a strong spatial dependence the semivariograms with nugget effect lower or equal to 0.25 of the landing, moderate when between 0.25 and 0.75 and poor when it is greater than 0.75. There was a reduction in productivity in subsequent cycles, with the greatest reduction occurred in areas with sandy soils to the 3rd cycle of the crop. It was found that in areas with higher productivity reduction over the cycles, the cone index values of soil were higher than 3.5 MPa at the 0-30 cm layers, in sugar cane culture line.
Keyword
: compaction, geostatistical, soil penetration resistance
I. Marasca
F. C. Masiero
D. A. Fiorese
S. S. Guerra
K. P. Lancas
Spatial Variability in Crop, Soil and Natural Resources
Poster
2014
Download paper