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ARPN Journal of Science and Technology >> Volume 7, Issue 1, January 2017

ARPN Journal of Science and Technology


Effect of Tillage on Soil Properties and Cotton (Gossypium Barbadence L) Yield in Sudan Gezir

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Author Siddig A. Mohamed Ali
ISSN 2225-7217
On Pages 928-934
Volume No. 3
Issue No. 9
Issue Date October 01, 2013
Publishing Date October 01, 2013
Keywords Tillage, soil physical properties, cotton, Gezira, Sudan



Abstract

The effects of three tillage practices (minimum tillage7cm depth, conventional tillage 15cm depth, and deep tillage 50 cm depth) on some soil physical properties and Cotton (Gossypium barbadence L.) performance and yield were studied at the Gezira Research Station Farm, at Wad Medani during 1989 ? 1990 season. It was found that bulk density values were not significantly different at the upper depths (0-15 cm and 15-30 cm) but at 45-60 cm depth bulk density was significantly lower under deep tillage than under minimum tillage .conventional tillage resulted in higher bulk density compared to deep tillage but the differences were not significant. The differences between conventional tillage and minimum tillage were not significant. Soil penetration resistance was periodically measured to 40 cm depth. At all measurement periods, deep tillage resulted in the lowest soil penetration resistance (SPR) for all depths followed by minimum tillage and conventional tillage. There were no significant differences in SPR between tillage practices at the upper depths (10-20 cm and 20-30 cm), while at the lower depth (30-40 cm) tillage treatments were significantly different. It was found that moisture depletion decreased with increasing depth for all measurement periods. Maximum depletion was limited to the top 30 cm for all treatments. Results showed no significant differences between tillage treatments but moisture depletion under deep tillage was higher compared to conventional and minimum tillage. No significant differences were observed in infiltration rate, wetting front depth and cumulative intake between the treatments 28 weeks after sowing however, deep tillage improved soil infiltration over conventional and minimum tillage after 5 hours. Results showed that roots under deep tillage were bigger, and were not subjected to deformation compared to those under conventional and minimum tillage. Deep tillage produced significantly higher root dry weight followed by conventional and minimum tillage .At135 days after sowing; roots under deep tillage were significantly longer than those under minimum and conventional tillage. Plant height under different tillage systems was significantly different. At 135 days after sowing, deep tillage produced taller plants and heavier shoots dry weight followed by conventional and minimum tillage. Different tillage practices significantly influenced cotton yield. Deep tillage produced significantly higher yield over minimum tillage .Although, there were no significant differences between conventional and deep tillage, the latter produced higher yield. There were no significant differences between minimum and conventional tillage. Cotton yield, however, was lowest in plots with minimum tillage.


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