EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ Resolve Accession
+ 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
Submit PDF Full TextSubmit 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


, : Systems approach to weed management in irrigated crops. Weed science 36(6): 840-845

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.

(PDF same-day service: $19.90)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 001962912

DOI: 10.2307/4044798

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Adeniji, A.A.; Rumak, S.; Oluwafemi, R.A., 2015: Effects of replacing groundnut cake with rumen content supplemented with or without enzyme in the diet of weaner rabbits. Rabbits are also herbivores which efficiently convert fodder to food. They are prolific and converter of plant proteins of little or no use to people as food into high-value animal protein. Rabbit meat is high in protein, low in calories and low i...

Ramamoorthy, K.; Krishnaveni, K.; Aruna, N., 2003: Effect of manure, fertilizer and spacing on herbage and seed yield in senna (Cassia angustifolia Vahl.). An experiment was conducted with senna (C. angustifolia) cv. Tirunelvely local during the rabi seasons of 1997 and 1998 in Killikulam, Tamil Nadu, India, under irrigated condition. The main plot treatments included a control and farmyard manure (F...

Adjei, A. A.; Wood, T. C.; Weinshilboum, R. M., 2001: 2-Methoxyestradiol sulfation Possible metabolic pathway. Clinical Pharmacology & Therapeutics 69(2): P75, February

Walter, G.J., 2005: The impact of ophthalmic surgery on the public image of psychiatry. Medical Journal of Australia 183(11-12): 678-678

Calvo, P.; Torres, A.; Fedriani, C.; Rios, RM.; Perez Silva, J., 1986: Ultrastructure chez Histriculus similis (Cilie hypotriche). The ventral surface of the ciliate H. similis was observed using light and transmission microscopy in order to determine how its ultrastructure compares to that of other hypotrichs. The adoral zone of paramembranelles show 40 paramembranelles, eac...

Tan, S.; Fraley, C.D.; Zhang, M.; Dailidiene, D.; Kornberg, A.; Berg, D.E., 2005: Diverse phenotypes resulting from polyphosphate kinase gene (ppk1) inactivation in different strains of Helicobacter pylori. Connections among biochemical pathways should help buffer organisms against environmental stress and affect the pace and trajectory of genome evolution. To explore these ideas, we studied consequences of inactivating the gene for polyphosphate kin...

Fisher, B.; Gunduz, N.; Coyle, J.; Rudock, C.; Saffer, E., 1989: Presence of a growth-stimulating factor in serum following primary tumor removal in mice. The effect of removal of a primary tumor on the kinetics of cells in a metastasis was evaluated using six different tumors (C3H, MXTa, MXTb, MC54, CD8, and 3LL) which varied relative to their origin, histology, and the strain of mice in which they...

Gessain A.; Plumelle Y.; Sanhadji K.; Barin F.; Gazzolo L.; Constant Desportes M.; Pascaline N.; Diebold J.; De The G., 1986: Adult t cell leukemia lymphoma associated with human t cell leukemia lymphoma virus type i in martinique i french west indies a report of two cases. Two HTLV-I associated adult T cell leukemia cases were observed in patients from Martinique (French West Indies). These cases are similar to the clinical entity, described by Takatsuki in 1977 in Japan and by Catovsky in Caribbean patients, charac...

Kojima, K.; Amiya, N.; Kamijo, M.; Kageyama, H.; Uchiyama, M.; Shioda, S.; Matsuda, K., 2010: Relationship between alpha-melanocyte-stimulating hormone- and neuropeptide Y-containing neurons in the goldfish hypothalamus. Intracerebroventricular (ICV) injection of alpha -melanocyte-stimulating hormone ( alpha -MSH) inhibits, whereas ICV injection of neuropeptide Y (NPY) stimulates food intake in the goldfish. However, there is little information about the functiona...

Harris, R.L.ke, W.; Putman, C., T.; Rank, M.; Sanelli, L.; Bennett, D., J., 2007: Spastic tail muscles recover from myofiber atrophy and myosin heavy chain transformations in chronic spinal rats. Without intervention after spinal cord injury ( SCI), paralyzed skeletal muscles undergo myofiber atrophy and slow-to-fast myofiber type transformations. We hypothesized that chronic spasticity-associated neuromuscular activity after SCI would pr...