الفهرس 
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Abstract
SUMMARY AND CONCOLUSIONS
A field experiment was conducted at the experimental farm of Soils Department, at Faculty of Agriculture, Ain Shams University, Kaliubeya Governorate, Egypt, to maximize the effectiveness of herbicides resistance injected through modern pressurized irrigation systems. Two application techniques were used to weed control. Pre-emergence Pendimethalin herbicide (Stomp 50% EC) was applied via drip irrigation systems (surface & sub-surface) and conventional spraying by using knapsack sprayer with three concentration of the herbicide dosage rate recommended (100%, 75% and 50%) and control with treatment. Treatments have been conducted on green beans crop (Poulista variety) during the season (2018), to achieve the following Objectives:
1. Using the modern pressurized irrigation systems for weed control and maximize the benefit of herbicides.
2. Evaluate the effective of herbigation and spraying technique.
3. Increase the productivity with lower costs.
4. Obtaining an export product with high quality free from herbicides residues.
The field experiment included:
1- Using drip irrigation system (surface & sub-surface) for weed control by herbigation technique.
2- Pre-emergence Pendimethalin herbicide (Stomp 50% EC) was applied via herbigation and conventional spraying technique.
3- Venturi device was used as injector for a herbicide and fertilizers for the season
4- Green beans crop (Poulista variety) during the season (2018).
The measurements:
• Estimating water use efficiency.
• Estimating weed control efficiency.
• Estimating Productivity of pods& straw yield (ton /fed).
• Estimating pods quality parameters.
• Estimating vegetative growth parameter.
• Estimating herbicide residues in the soil and crop.
The obtained results showed as follows:
1. Sub-surface drip irrigation increased water use efficiency.
2. The best weed control efficiency was achieved with herbigation technique under sub-surface drip irrigation, compared with surface drip irrigation and conventional spraying when knapsack sprayer had used.
3. The highest productivity was achieved under sub-surface drip irrigation with 100%, followed 75% which the mean difference between them was not significant.
4. The best concentration of the herbicide is 75% from recommendation rate because is not significantly difference between 100% and free of herbicide residues.
5. Herbigation is more efficient and lower cost than conventional spraying.
The recommendations of this study:
1. Herbigation technique using sub-surface drip irrigation systems able to maximize the effectiveness of herbicides resistance.
2. Injected herbicides via sub-surface drip irrigation with 75% of recommendation dosage rate due to results were free of herbicide residues and increased productivity, pods quality and vegetative growth parameters and lower cost than conventional spraying.