Long term cover crops experiment

Objective
To test cover crops and nitrogen fertilization on a maize-soybean rotation.
Farm operation data?
Sample archive?
Samples available?
 
Data Access Statement
Available to collaborators only
Data license
No data license
Data policy
No
Organizations
Instituto Nacional de Tecnología Agropecuaria
research organisation
INTA Pergamino
experimental research station
Person
Silvina Beatriz Restovich
Instituto Nacional de Tecnología Agropecuaria

Site: INTA Pergamino

Type
research station field
Location
Pergamino
Beunos Aires
Argentina
Geographic location
-33.9278607, -60.567172
© OpenStreetMap contributors
Elevation
71 Metres
Visits permitted?
No
Management
Site is is under no-till management. The control without cover crop was maintained without weeds during the cover crops growing season using chemical control.
Soil type
chernozem
Soil description
Soil type is a Typic Argiudoll (USDA Soil Taxonomy) of the Pergamino series with a silt loam A horizon without eroded phase (<0.3% slope) and a strong argillic B horizon.
Climatic type
warm oceanic / humid subtropical climate
Climate properties
VariableTime periodValue (range)Units
air temperature16.6 (10.2 – 23) degree Celsius
precipitation988 (498 – 1478) millimeter

Design period: Main period (2005—)

Design Type
Split-plot
Description
An experiment was set up at the Pergamino Experimental Station of the Instituto Nacional de Tecnología Agropecuaria (INTA) introducing fall-winter grasses (rescue grass (Bromus unioloides L.), ryegrass (Lolium multiflorum L.), oats (Avena sativa L.), barley (Hordeum vulgare L.)), crucifers (rape seed (Brassica napus L.), forage radish (Raphanus sativus L.)), a legume (vetch (Vicia sativa L.)) and an oats+vetch mixture as cover crops in a maize-soybean rotation under no tillage with and without N fertilization of maize. A control without cover crop was included and it was maintained without weeds during the cover crops growing season using chemical control.
Design description
The experimental design consisted of three completely randomized blocks with split plot; the main plots (30 x 10 m) corresponding to the cover crop treatment and the subplots to the fertilizer treatment (0 and 32 kg N ha-1 at V5-6 stage of maize).
Number of blocks
3
Number of plots
54
Number of replicates
3
Crops
CropYears grown
maize
soybeans
cover crop
Factor
nitrogen fertilizer exposure
Plot application: Sub plot
nitrogen  (32 kgN/ha)
Applied to crop: maize
Applied at V5-6 growth stage
control exposure  (0 kgN/ha)
Measurements
VariableMaterialUnitsFrequencyScaleComment
grain yield traitNot specifiedannual
grain quality traitsNot specifiedoccasional