The effect of seed bed preparation, intercropping and weed control treatments on sunflower productivity and associated weeds
Abstract: Two field experiments were carried out at Sids Agricultural Research Station, Agricultural Research Center, Egypt during 2004 and 2005 summer seasons to study the effect of possible integration between seed bed preparation by mechanical tillage (mouldboard plowing/rotary plowing, chisel plowing three passes/rotary plowing, chisel plowing two passes only), live mulch by (soybean) and weed control treatments (Pendimethalin (Stomp 50% EC) at 875 g/fed., fluazifop (Fuasilade) at 62.5 g/fed., hand-hoeing twice and untreated check) on fresh weight of weeds, yield and its components of primary crop (sunflower) and second crop cover crop soybean which intercropped with sunflower in naturally infested soil by weeds.
Results reported that contribution tillage mouldboard/rotary and chisel plow/rotary, intercropping and weed control treatments reduced weed biomass which ranged from 17 - 52, 34 - 76 and 20 – 96 percent and increasing profitability which ranged from 15.5 – 55.6, 35.5 – 60.4 and 24.7 – 76.4 percent, respectively, compared with chisel plow two passes only, sole sunflower and unweeded control in both seasons. The interactions between tillage systems (mouldboard/rotary plow or chisel/rotary plow) and weed control treatments (Pendimethalin or hand hoeing twice) reduced total weeds which ranged from 77 – 97 percent and increased profitability which ranged from 24.8 – 89.9 percent than chisel plow two passes only and unweeded control in both seasons. The interaction between intercropping and weed control treatment by Pendimethalin or hand hoeing twice reduced fresh weight of weeds ranged from 77 - 97.6 percent and increased profitability from 42.4 – 85.03 than chisel plow two passes only and unweeded check. The interaction effect between tillage systems (mouldboard/rotry and chisel/rotary plow) intercropping and weed control treatments by (Pendimethalin or hand hoeing twice) reduced fresh weight of weeds ranged from 80.5 – 99.5 percent and increased profitability ranged from between 40.84 – 107.52 than farmer treatments (chisel plow two passes only), sole sunflower and unweeded check. Thus tillage systems, live mulching and chemical and mechanical weed control can be used as compatible tactics for weed management in improving sunflower production.
Publication year 2007
Pages 5101-5115
Organization Name
serial title J. Agric.Sci. Mansoura Univ.
Author(s) from ARC
Agris Categories Weeds and weed control
AGROVOC
TERMS		 Intercropping. Soybeans. Sunflower seed. Weed control.
Proposed Agrovoc tillage system;
Publication Type Journal
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