Chopra, P. and Angiras, N.N. (2008) Effect of tillage and weed management on productivity and nutrient uptake of maize (Zea mays). Indian Journal of Agronomy , 53 (1). pp. 66-69.
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Abstract
An investigation was carried out at Palampur during rainy season of 2002 and 2003 to assess the influence of three tillage methods (zero tillage, conventional tillage and raised seed-bed) and four weed-control methods (unweeded check, acetachlor 0.75 kg/ha, acetachlor 1.25 kg/ha and atrazine 1.5 kg/ha) on nutrient uptake and productivity of maize (Zea mays L.). Zero tillage resulted in significantly higher soil-moisture content and bulk density than conventional tillage and raised seed-bed. Raised seed-bed resulted in significantly lowest count and dry matter of weeds. Compared with zero tillage, the conventional tillage and raised seed-bed methods being statistically at par, resulted in significantly higher N, P and K uptake by maize crop (18.1, 25.0 and 20.2% by the former and 16.1, 36.2 and 16.7% respectively by the latter method) and lower depletion of these nutrients by weeds (13.5, 15.6 and 10.8% by the former and 30.3, 30.3 and 29.0%, respectively by the latter method), increasing the average grain yield of the crop by 16.9 and 13.7% by these methods. Among weed-control methods, atrazine 1.5 kg/ha, being statistically on a par with acetachlor 1.25 kg/ha, significantly reduced the population and dry matter of total weeds. Compared with the unweeded check, atrazine 1.5 kg/ha and acetachlor 1.25 kg/ha, being statistically at par, significantly increased the N, P and K uptake by the crop (93.3, 105.3 and 95.4% by the former and 87.0, 88.8 and 88.9%, respectively by the latter) and lower depletion of N, P and K by weeds (79.4, 87.2 and 81.5% by the former, and 81.9, 88.7 and 83.5% respectively by the latter herbicide), increasing in the grain yield of maize by 75.2 and 71.7% by these two herbicides.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Agronomy, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur Himachal Pradesh 176 062 |
| Subjects: | Postharvest Management |
| Divisions: | Maize |
| Depositing User: | David T |
| Date Deposited: | 29 Nov 2010 16:41 |
| Last Modified: | 29 Dec 2010 20:11 |
| Official URL: | http://www.indianjournals.com/ijor.aspx?target=ijo... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/822 |
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