Add to ORKGThe term weed is often defined as a plant out of place. A. C. Martin has complained that this definition reflects human bias and that pest plants are out of place only with respect to man\u27s immediate purpose. In nature\u27s scheme, they often serve useful functions such as providing food for wildlife throughout the growing season and covering barren soil, thus preventing soil erosion. Judging from their competitive success with many so-called desirable species, they are anything but out of place
Iowa and most other states have a real weed problem. Canada thistle, quack grass, horse nettle and f...
Our state has a number of troublesome weed grasses, worst of which at the present time is, likely, t...
In 1912, Dr. B. Shimek of the State University of Iowa, presented a paper, An Artificial Prairie, ...
The term weed is often defined as a plant out of place. A. C. Martin has complained that this defi...
Greatly increased interest has been shown recently thruout Iowa in the recognition of weeds which ar...
The matter of the distribution of weeds is one of interest, not only to the phytogeographer, but to ...
The primary reason for controlling weeds during crop production is to prevent crop yield losses due ...
The topsoil from an Iowa State University building site was piled for reuse. The site had been mulch...
Weeds have an important bearing on the extent and the character of the crop produced. An examination...
According to the U.S. Department of Agriculture, countless hours and millions of dollars are spent e...
In the current era of herbicide-based weed management systems, it is easy to assume the success of w...
T The present study is based on the occurrence of noxious weed seeds in oat and red clover seed samp...
During the last few years the writer has received numerous requests to identify weeds; among them ar...
A weed may be broadly defi ned as any unwanted plant, or as I have heard it said many times, “a weed...
weed seedling counts. Weed control practices often have an effect on the weeds we deal with on a yea...
Iowa and most other states have a real weed problem. Canada thistle, quack grass, horse nettle and f...
Our state has a number of troublesome weed grasses, worst of which at the present time is, likely, t...
In 1912, Dr. B. Shimek of the State University of Iowa, presented a paper, An Artificial Prairie, ...
The term weed is often defined as a plant out of place. A. C. Martin has complained that this defi...
Greatly increased interest has been shown recently thruout Iowa in the recognition of weeds which ar...
The matter of the distribution of weeds is one of interest, not only to the phytogeographer, but to ...
The primary reason for controlling weeds during crop production is to prevent crop yield losses due ...
The topsoil from an Iowa State University building site was piled for reuse. The site had been mulch...
Weeds have an important bearing on the extent and the character of the crop produced. An examination...
According to the U.S. Department of Agriculture, countless hours and millions of dollars are spent e...
In the current era of herbicide-based weed management systems, it is easy to assume the success of w...
T The present study is based on the occurrence of noxious weed seeds in oat and red clover seed samp...
During the last few years the writer has received numerous requests to identify weeds; among them ar...
A weed may be broadly defi ned as any unwanted plant, or as I have heard it said many times, “a weed...
weed seedling counts. Weed control practices often have an effect on the weeds we deal with on a yea...
Iowa and most other states have a real weed problem. Canada thistle, quack grass, horse nettle and f...
Our state has a number of troublesome weed grasses, worst of which at the present time is, likely, t...
In 1912, Dr. B. Shimek of the State University of Iowa, presented a paper, An Artificial Prairie, ...