PPT-Integration of Herbicides with Non-chemical Methods of Weed Management

Dr Ashirbachan Mahapatra Assistant Professor Department of Agronomy and Agroforestry MSSSoA CUTM Lecture 11 Definition and Concept of Weed Management Weed management is the application of certain principles and suitable methods that will improve the vigor and uniform stand of the crop At the same time ignore or discourage the invasion and growth of weeds . Developed by: . Susan Donaldson. University of Nevada Cooperative Extension. UNCE, Reno, Nev.. Topics to be covered. What is a weed?. Why worry about weeds?. How weeds are regulated?. Weed biology. Factors that lead to plant invasion. Jeffrey . Derr. Professor of Weed Science. Virginia . Tech. Charlottesville VVA talk 1/30/14. 2014 Pest Management Guides. Horticultural and Forest Crops. . http://. pubs.ext.vt.edu/456/456-017/456-017.html. Dr. Timothy Grey & Fritz Turpin. Crop and Soil Sciences . Dept. UGA. Troublesome weeds. Grasses. Perennials . Bermuda grass. Bahia. Annuals. Italian ryegrass. Broadleaf weeds. Winter annual – wild radish. Potato . C. ropping . S. ystems. Pamela J.S. . Hutchinson. Potato Cropping Systems Weed Scientist. Aberdeen . Research & Extension Center. Weed Management in . Potatoes: Lecture topics. Weed – Potato . Lesson 5. The copyright in these Weed Science Society of America (WSSA) training lessons is owned by the WSSA. WSSA grants you a limited license to use these materials solely for training and educational . Patrick McCullough, Ph.D.. University of Georgia. August 8, 2013. Summer Annuals. Winter Annuals. Henbit. Hop Clover. Annual Bluegrass. Hairy . Bittercress. Winter Annual Weeds. Begin emerging when soil temperatures drop below approximately 70 F,. ?. thorns. toxicity. release substances that trap insects. dense leaf hairs reduces transpiration.. Why are these characteristics important when controlling weeds? . Examples: . Thorns . make it hard to . Lesson 2: Weed Control Strategies. After completing this Lesson, you have learned to answer:. When the first schedule for weed control activity in . chili. pepper should . start? . How pre-sowing rainfall or irrigation helps in better weed control in . Plant Science 280. Mr. Gomes. Herbicides. Defined as “a chemical substance or cultured organism used to kill or suppress the growth of plants.”. Designed to disrupt the physiology of plants over a long enough period of time to kill them or severely reduce their growth. PCP 506: WEED SCIENCE AND CONTROL Definition of a Weed The definition of weeds is predicated on human perception , desire and needs.  A weed is a plant which interferes with human activity or welfare. Rem 151 fall semester 2017. Why Care?. The spread of noxious weeds:. Signal ecological decline of entire watersheds. . Reduce beauty and biodiversity of natural areas.. Cause widespread economic losses in agriculture and recreation.. Weeds are best controlled within the first several weeks after a crop is planted. Herbicides are more effective against smaller weeds. Smaller weeds are less competitive than larger weeds. Maximize profit. Dr. Ashirbachan Mahapatra. Assistant . Professor. Department of Agronomy and Agroforestry. MSSSoA. , CUTM. Lecture . 12. Herbicide Resistance: . Naturally . occurring inheritable ability of some weed biotypes within a population to survive a herbicide treatment that would, under conditions of . Dr. Ashirbachan Mahapatra. Assistant . Professor. Department of Agronomy and Agroforestry. MSSSoA. , CUTM. Lecture . 7. Classification based on chemical nature . Herbicides are . primarly. grouped into .