Agronomy Journal
SCOPUS (1976-1985,1987-1988,1991,1993-2025)SCIE-ISI
0002-1962
1435-0645
Mỹ
Cơ quản chủ quản: John Wiley & Sons Inc. , WILEY
Lĩnh vực:
Agronomy and Crop Science
Phân tích ảnh hưởng
Các bài báo tiêu biểu
Hydrometer Method Improved for Making Particle Size Analyses of Soils1
Tập 54 Số 5 - Trang 464-465 - 1962
SynopsisThe time required for dispersing soils for the hydrometer method of
making particle size analyses was reduced from 25 minutes to only 2 minutes. The
procedure consists of soaking the soils in a 5% Calgon solution for 15 to 20
hours and then dispersing them with a soil mixer running at a speed of about
16,000 r.p.m., for 2 minutes.
AquaCrop—The FAO Crop Model to Simulate Yield Response to Water: I. Concepts and Underlying Principles
Tập 101 Số 3 - Trang 426-437 - 2009
This article introduces the FAO crop model AquaCrop. It simulates attainable
yields of major herbaceous crops as a function of water consumption under
rainfed, supplemental, deficit, and full irrigation conditions. The growth
engine of AquaCrop is water‐driven, in that transpiration is calculated first
and translated into biomass using a conservative, crop‐specific parameter: the
biomass water pro...
Instrument for Indirect Measurement of Canopy Architecture
Tập 83 Số 5 - Trang 818-825 - 1991
AbstractLeaf area index (LAI) and leaf angle distribution are widely used
indices of vegetative canopy structure that are difficult to measure directly.
This study was conducted to test a commercially available instrument for rapidly
determining LAI and foliage inclination information from “fisheye” measurements
of light interception. The instrument's estimates of LAI are compared with
direct meas...
Nitrogen Management Strategies to Reduce Nitrate Leaching in Tile‐Drained Midwestern Soils
Tập 94 Số 1 - Trang 153-171 - 2002
Balancing the amount of N needed for optimum plant growth while minimizing the
NO3that is transported to ground and surface waters remains a major challenge
for everyone attempting to understand and improve agricultural nutrient use
efficiency. Our objectives for this review are to examine how changes in
agricultural management practices during the past century have affected N in
midwestern soils ...
AquaCrop—The FAO Crop Model to Simulate Yield Response to Water: II. Main Algorithms and Software Description
Tập 101 Số 3 - Trang 438-447 - 2009
The AquaCrop model was developed to replace the former FAO I&D Paper 33
procedures for the estimation of crop productivity in relation to water supply
and agronomic management in a framework based on current plant physiological and
soil water budgeting concepts. This paper presents the software of AquaCrop for
which the concepts and underlying principles are described in the companion
paper (Stedu...
Enhancing Water Use Efficiency in Irrigated Agriculture
Tập 93 Số 2 - Trang 281-289 - 2001
Irrigated agriculture is a vital component of total agriculture and supplies
many of the fruits, vegetables, and cereal foods consumed by humans; the grains
fed to animals that are used as human food; and the feed to sustain animals for
work in many parts of the world. Irrigation worldwide was practiced on about 263
Mha in 1996, and about 49% of the world's irrigation occurred in India, China,
and...
Cover Crops and Ecosystem Services: Insights from Studies in Temperate Soils
Tập 107 Số 6 - Trang 2449-2474 - 2015
Cover crops (CCs) can provide multiple soil, agricultural production, and
environmental benefits. However, a better understanding of such potential
ecosystem services is needed. We summarized the current state of knowledge of CC
effects on soil C stocks, soil erosion, physical properties, soil water,
nutrients, microbial properties, weed control, crop yields, expanded uses, and
economics and highl...
Operational Estimates of Reference Evapotranspiration
Tập 81 Số 4 - Trang 650-662 - 1989
AbstractMany forms of the Penman combination equation have been proffered for
estimating daily evapotranspiration (ET) by the agricultural reference crops
grass and alfalfa (Medicago sativa L.). This study was conducted to evaluate
popular forms of the Penman equation, and to develop and evaluate general
relationships for estimating daily average values of canopy and aerodynamic
resistance paramet...
Potential Uses and Limitations of Crop Models
Tập 88 Số 5 - Trang 704-716 - 1996
AbstractCrop models have many current and potential uses for answering questions
in research, crop management, and policy. Models can assist in synthesis of
research understanding about the interactions of genetics, physiology, and the
environment, integration across disciplines, and organization of data. They can
assist in preseason and in‐season management decisions on cultural practices,
fertil...
No‐Tillage Crop Production: A Revolution in Agriculture!
Tập 100 Số S3 - 2008
For thousands of years, agriculture and tillage were considered synonymous. It
was simply not thought possible to grow crops without first tilling the soil
before planting and for weed control. The advent of modern herbicides permitted
no‐tillage (NT) to be developed and practiced on actual working family farms.
No‐tillage is generally defined as planting crops in unprepared soil with at
least 30%...