[Parameters: Topic='AGRICULTURE', Term='SOILS', Variable_Level_1='NITROGEN', Detailed_Variable='TOTAL NITROGEN']
Bhubaneswar Centre, Orissa (All India Coordinated Research Project on Long Term Fertilizer Experiments)Entry ID: India.Bhubaneswar
Abstract: This long term experiment began in 1972. The experimental site is a
tropical area, with a minimum annual temperature of 14 deg C, maximum
annual temperature of 37.5 deg C, and mean annual rainfall of 1449
mm. The soil is characterized as Aeric Haplaquepts. The soil
properties are as follows:
Layer 1 0-22cm - 10 YR 8/4 very pale brown, sandy. Layer 2 22-52cm -
2.5 Y 8/4 pale brown, clay loam. ... Layer 3 52-82cm - 2.5 Y 6/4 light
yellowish brown, clay loam. Layer 4 82-112cm 7.5 Y 4/10 dark grey,
clay. Layer 6 112-142cm 7.5 Y 4/6 dark grey, clay.
Approximate water holding capacity: 27.1 mm per 220 mm
Approximate cation exchange capacity: 40 mmol/kg
Approximate soil organic matter content: .47%
Approximate carbon:nitrogen ratio: 6.3
Percent clay: 4.2%
Percent silt: 7%
Percent sand: 88.8%
Approximate minimum soil pH: 5.6
Method of determining soil pH: pH measured in 1:2.5 soil to water.
The land use and treatments are:
Two land-uses (rotations): A) Rice (monsoon) & B) Rice (winter).
Treatments are as follows. Each rotation receives the following
N-P2O5-K2 rate in kg/ha: 1) 50% NPK (50-30-30), 2) 100% NPK
(100-60-60), 3) 150% NPK (150-90-90), 4) 100% NPK (100-60-60) with
hand weeding, 5) 100% NPK (100-60-60) with 6 kg/ha zinc added, 6) 100%
NP (100-60-0), 7) 100% N (100-0-0), 8) 100% NPK plus 10 t/ha FYM
(125-74-85 - including FYM NPK content for Monsoon Rice; 120-60-60 -
including FYM NPK for Winter Rice), 9) 100% NPK (-S) - sulpher free
fertilizers applied, 10) 100% NPK plus lime (100-60-60 - same as 100%
NPK until 1982 thereafter lime added also as required), 11) Control
[nil inputs] (0-0-0), 12) Fallow plot.
Measurements made during this experiment are listed in the parameters
section of this record. Time zero soil measurements taken.
DETAILS OF SOIL SAMPLING METHOD: Initial composite sample was
collected from 0-22cm depth using a spade. After the layout of the
experiments, 10-12 cores from each plot were sampled using a stainless
steel tube auger from each plot in a zig-zag and composited as
described by Jackson (1973) Soil Chemical Analysis, Printice-Hallof
India Pvt Ltd, New Delhi, India. Subsequently, similar composite
samples were drawn from each plot after each crop/annual cycle. Soil
is separated into layers Details of measuring depths and soil layers:
Separted into 0-15, 15-30 and 30-45cm after 16 annual cropping cycles.
This information was compiled for the GCTE-SOMNET Database, Pete
Smith, Pete Falloon, David Powlson, and Jo Smith. Soil Science
Department, IACR-Rothamsted, UK.
Start Date: 1972-01-01
Vertical Resolution: 15 cm
Temporal Resolution: varies by measurment taken
AGRICULTURE > AGRICULTURAL CHEMICALS > FERTILIZERS
AGRICULTURE > AGRICULTURAL PLANT SCIENCE > CROP/PLANT YIELDS
AGRICULTURE > AGRICULTURAL PLANT SCIENCE > CROPPING SYSTEMS
AGRICULTURE > ANIMAL SCIENCE > ANIMAL MANURE AND WASTE > MANURE
AGRICULTURE > SOILS > CARBON > TOTAL CARBON
AGRICULTURE > SOILS > NITROGEN > MINERAL NITROGEN
AGRICULTURE > SOILS > NITROGEN > TOTAL NITROGEN
AGRICULTURE > SOILS > ORGANIC MATTER
AGRICULTURE > SOILS > SOIL BULK DENSITY
AGRICULTURE > SOILS > SOIL FERTILITY
BIOSPHERE > VEGETATION > NITROGEN
BIOSPHERE > VEGETATION > NUTRIENTS > P,K,S,ZN,FE, MN, AND CU
Quality Width of smallest plot is 10 m, Length of smallest plot is 20 m.
There are at least 3 replicates in the experiment. The experiment has
a randomized plot design. Bulk crop of rice was grown in 2-3 seasons
before laying out of the experiment after selection of the site. Based
on the fertility gradient (as far as possible) replicates were
assigned in such a way that all treatments in one replication had more
or less uniform fertility status. The treatments in each replication
were allotted as per random numbers chosen from standard statistics
text book. Absolute control (nil inputs). Other treatments serve as controls
for others. See references (in reference list) for full details.
Access Constraints none
Role: TECHNICAL CONTACT
Project Coordinator (Long Term Fertilizer Experiments) Indian Institute of Soil Science Nabibagh, Berasia Road
Postal Code: 462038
Role: DIF AUTHOR
Phone: (301) 614-6898
Email: Tyler.B.Stevens at nasa.gov
NASA Goddard Space Flight Center Global Change Master Directory
Province or State: MD
Postal Code: 20771
Nambiar, K.K.M. (1994) Yield sustainability of rice-rice and rice-wheat
systems under long-term fertilizer use. In: Resource Management for Sustained Crop Production (eds: M.N. Sadaphal & Rajat De), Indian
Society of Agronomy, New Delhi, India: 266-299.
Nambiar, K.K.M. (1995) Major cropping systems in India. In: Agricultural
Sustainability in Economic, Environmental and Statistical terms. (Eds: V. Barnett, R.W. Payne & R. Steiner), John Wiley & Sons Ltd., London, U.K. (in press).
Creation and Review Dates
DIF Creation Date: 1999-09-20
Last DIF Revision Date: 2008-01-31
Future DIF Review Date: 2000-09-20