Presenting a Model for Water Engineering (Optimizing and Increasing Consumption Efficiency) in Conditions of Stress and Lack of Water and Nitrogen Fertilizer (Case Study of Soybean Plant)
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View abstract on PubMed
Summary
This summary is machine-generated.Optimizing irrigation and nitrogen fertilizer is key for crop yield. Supplying 100% water requirement with 150 kg/ha nitrogen maximizes grain yield, while no irrigation with 150 kg/ha nitrogen boosts water productivity.
Area Of Science
- Agricultural Science
- Agronomy
- Plant Physiology
Background
- Soil moisture and nitrogen fertilizer are critical environmental factors influencing plant growth and yield.
- Efficient management of these resources is essential for sustainable agriculture and food security.
Purpose Of The Study
- To investigate the interactive effects of varying irrigation levels and nitrogen fertilizer rates on crop yield and related physiological parameters.
- To determine optimal irrigation and nitrogen management strategies for maximizing seed yield and water productivity in the study region.
Main Methods
- A split-plot design in randomized complete blocks was employed over three iterations (2021-2022).
- Six irrigation levels (0% to 120% water requirement) and five nitrogen fertilizer rates (0 to 200 kg/ha) were tested.
- Key parameters including seed yield, plant height, chlorophyll content, and water productivity were measured.
Main Results
- A significant interaction (p<0.01) between irrigation and nitrogen fertilizer was observed for most measured parameters.
- Maximum grain yield (3,049 kg/ha) was achieved with 100% water requirement and 150 kg/ha nitrogen.
- Maximum seed yield-water productivity (2.28 kg/m³) was recorded under no irrigation and 150 kg/ha nitrogen.
Conclusions
- Optimal crop yield is achieved by supplying 100% of the water requirement combined with 150 kg/ha of nitrogen fertilizer.
- Excessive irrigation or high nitrogen application beyond optimal levels did not enhance crop yield and may lead to resource inefficiency.
- The findings provide valuable insights for sustainable agricultural practices in arid and semi-arid regions like Hormozgan Province.
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