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Details for article 7 of 12 found articles
| Title: |
Evaluation of the Use of Rice Bran Compost for Eco-friendly Weed Control in Organic Farming Systems |
| Author: |
M. A. I. Khan K. Ueno S. Horimoto F. Komai K. Tanaka Y. Ono |
| Appeared in: |
American journal of environmental sciences |
| Paging: | Volume 3 (2007) nr. 4 pages 235-240 |
| Year: |
2007 |
| Contents: |
Rice bran compost (RC) was evaluated under greenhouse and field conditions for ecofriendlyweed control of vegetable crops in organic farming systems. RC was applied 7 days beforespinach seed sowing, at the rate of 0% (control), 10%, 20% and 30% of soil (v/v) in the greenhouseand 2 kg m-2 under field conditions. RC significantly controlled the number and dry weight of weeds,and the weed control potentiality was increased by the increased application of RC in both years. Theefficacy of RC in reducing weed emergence and dry weight of broadleaf species was higher than grassweeds. Among the broad leaf weeds, Lamium amplexicaule L was the most sensitive to RC and wasdrastically reduced by the increased application of RC. Under field conditions, the total number ofweeds and the dry weight of weeds were also significantly reduced with the application of RC,compared with the untreated control. The growth inhibition potentiality of water soluble fractions ofRC was also tested with seed germination and radicle elongation of test species (barley, oat, tomatoand lettuce). The concentration response curves for the test species were drawn by plotting thepercentage of germination against the logarithm of the concentration. Considering the I25 value(defined as 25% inhibition of control) both for seed germination and radicle elongation, it wasindicated that water soluble fractions of RC was more effective in the suppression of dicotyledonousspecies (tomato and lettuce) than monocotyledonous species (barley and oat). The results of thepreliminary experiment with fresh rice bran under greenhouse conditions showed that fresh bransuppressed spinach seed germination when applied as 10% rice bran in soil but RC did not show asignificantly negative effect up to 20% RC application, compared with the control. Moreover, RCenhanced spinach growth. Considering both the weed control potentiality and spinach growthenhancing ability of RC, the effective appplication rate of RC is between 10-20% of soil (v/v) for weedcontrol as well as the successful growth of spinach. This research indicates that RC has the potential ofbeing used as a natural herbicides. |
| Publisher: |
Science Publications (provided by DOAJ) |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 7 of 12 found articles
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