EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Systems approach to weed management in irrigated crops


Weed science 36(6): 840-845
Systems approach to weed management in irrigated crops
The impact of four weed management systems on weed seed reserves in soil, yearly weed problem, and production of barley, corn, pinto bean, and sugarbeet was assessed where these crops were grown in rotation for 4 consecutive years in four cropping sequences. Weeds were controlled in each crop with only conventional tillage or conventional tillage plus minimum, moderate (system 1), and intensive (system 2) levels of herbicides. Seed of annual weeds from 11 genera were identified, with barynyardgrass and redroot pigweed comprising 66 and 19%, respectively, of the initial 90 million weed seed/ha present in the upper 25 cm of the soil profile. After the fourth cropping year, overall decline in the total number of weed seed in soil was 53% when averaged over four cropping sequences and four weed management systems. Over the 4-yr period, about 10 times more weeds escaped control in system 1 than in system 2; and within a crop, the fewest number of weeds escaped control annually in barley. System 2 had the highers herbicide use in each cropping sequence, the fewest weeds at harvest, and the smallest adjusted gross return over the 4-yr period in three of four cropping sequences.


Accession: 001962912

DOI: 10.2307/4044798



Related references

Intercropping systems and weed management practices on yield and nutrient uptake of crops and weeds in irrigated sorghum. Madras Agricultural Journal 2001; 87(1/3): 81-83, 2000

Weed seed population dynamics during six years of weed management systems in irrigated soil. Research progress report Western Society of Weed Science: 35, 1987

Weed seed population dynamics during six years of weed management systems in crop rotations on irrigated soil. Weed Science 35(3): 328-332, 1987

A weed management experience in California's irrigated crops. Proceedings of EWRS Symposium on Different Methods of Weed Control and their Integration, Uppsala, 1977 (Volume 2): 53-57, 1977

Weed management in irrigated fenugreek grown for forage in rotation with other annual crops. Canadian Journal of Plant Science 83(1): 181-188, 2003

Changes in the number of weed seeds in irrigated soil under two management systems. Proceedings of the Western Society of Weed Science (Volume 32): 74, 1979

Weed management in the arid zone. A systems approach to weed program analysis. Improving weed management for the 21st century Proceedings of the 9th biennial noxious weeds conference, Dubbo, Australia, 16-18 September 1997: 131-139, 1997

Weed management studies in cassava intercropping systems under irrigated conditions. Journal Of Horticultural Sciences: 2, 141-145, 2008

Efficiency of herbicides applied alone or combined in the weed control of irrigated or non-irrigated crops. Proceedings of the 6th International Sunflower Conference: 549-557, .

Integrated weed management systems for irrigated corn (Zea mays) production in Colorado--a case study. Weed science 44(2): 423-428, 1996