文档介绍：Weed Management
ANIC FARMERS
Organic anic Farming Requires Weed Management
use a wide variety
of tools anic farmers use a wide variety of tools and strategies to control weeds without
strategies to control synthetic chemicals. anic farmers continually adapt their weed
weeds without management practices as weed populations shift. Producers should have a good
synthetic chemicals. understanding of the philosophies and legalities anic farming before they plan
their weed management strategies. A brief overview anic agriculture follows;
for further details, see Iowa State University Extension anic
OAgriculture (PM 1880). (See page 8 for ordering instructions.)
Mechanical tillage
is an important
component anic
weed management. K. DELATE
PM 1883 August 2003
Weed Management
ANIC FARMERS
anic? Weed Productivity and Ecology
Environmental, economic, A weed is simply a plant that takes advantage of
and food safety concerns unused resources made available by cropping
are among the many rea- practices. Nutrient availability is usually high at the
Esons why some farmers Environmental, Abeginning of the season and decreases during the
anic production. season. Water availability depends on the weather
economic, and
For example, certified pattern of the particular year, but it is typically
organic soybeans in Iowa food safety concerns hig