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Mahsa Rahimi pool; Davod Akbari Nodehi; Reza Asadi; Ali Bagheri; Fazl Shirdel Shahmiri
Abstract
Due to the importance of rice cultivation, especially in Mazandaran Province, it is necessary to plan carefully for the optimal use of water resources in the province in the agricultural sector, especially rice, to reduce water demand for rice production. For this purpose, an experiment was conducted ...
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Due to the importance of rice cultivation, especially in Mazandaran Province, it is necessary to plan carefully for the optimal use of water resources in the province in the agricultural sector, especially rice, to reduce water demand for rice production. For this purpose, an experiment was conducted in the form of a complete block-design with three replications and four treatments using Tarom Hashemi cultivar, during the 2021 crop year in the Rice Research Institute of Iran-Amol. Treatments included conventional planting with flood irrigation (T1) and drip irrigation (T2), transplanting in un-puddled bed with drip irrigation (T3) and direct seed cultivation in dry bed with drip irrigation (T4). The results showed that the cultivation method was effective on yield, plant height, water consumption and irrigation water, water productivity and water use efficiency and was statistically significant at 1% and 5% level of probablity. The highest and lowest yields belonged to T1 and T4 treatments with 4079 and 2876 kg/ha, respectively, and T2 had the highest water productivity with 0.61 kg/m3, which had no significant difference with T1. The lowest water productivity belonged to T4 with 0.45 kg/m3. The highest and lowest irrigation water productivity belonged to T2 and T1 with 0.67 and 0.52 kg/m3, respectively Based on the results, conventional planting with drip irrigation did not have a significant reduction in yield compared to conventional planting with flood irrigation and increased water productivity by saving water consumption Therefore, the conventional planting method with drip irrigation was recognized as the best treatment in this study.
hamed zamani; d a; h m; f a
Abstract
In order to investigate the effects of different irrigation regimes on yield quantity and quality of flue-cured tobacco cv. K326, an experiment was carried out based on a randomized complete blocks design (RCBD) with three replications, at Tirtash Tobacco Research Center, in 2011. Treatments were combination ...
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In order to investigate the effects of different irrigation regimes on yield quantity and quality of flue-cured tobacco cv. K326, an experiment was carried out based on a randomized complete blocks design (RCBD) with three replications, at Tirtash Tobacco Research Center, in 2011. Treatments were combination of W1= 40%, W2=60%, W3=80%, and W4=100 percent crop water requirement with D1=5, D2=10, D3=15 days irrigation interval with two control treatments (without irrigation (R) and furrow irrigation (I)). The results showed that treatment W4D1, W4D2, W4D3, W3D1, W3D2, W3D3, W2D1, and W1D1 had statistically significant difference with the other treatments and had more dry leaf yield. Also, the minimum leaf chlorine content was observedin W4D2, W3D1, W2D1, W2D2, W1D3, and Rtreatments. Under W4D2, W3D1, W3D3, W2D1, W1D1, W1D2, and W1D3 treatments, tobacco had statistically significant difference with other treatments and had higherprice. Also, the minimum gross income was obtained under W2D2, W2D3, W1D3, I, and R Treatments.
davod Akbari Nodehi; Aliakbar Azizizohan; Reza Rezaee
Abstract
In order to study the effects of deficit irrigation on tomato yield and to determine the production function and water use efficiency, an experiment was conducted based on randomized complete block design in three replications for two years, in Mazandaran province. Irrigation treatments were based on ...
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In order to study the effects of deficit irrigation on tomato yield and to determine the production function and water use efficiency, an experiment was conducted based on randomized complete block design in three replications for two years, in Mazandaran province. Irrigation treatments were based on 0, 20, 40, 60, 80 and 100% of water requirements. The minimum and maximum yield belonged to I0 and I100 treatments. Water use efficiency and irrigation water use efficiency in I100 treatment was significantly higher than the other treatments. The results showed that the maximum yield of tomato occurred when full water requirement was provided. Therefore, I100 treatment with 5635 m3.ha-1 of water consumption and tomato yield of 45,020 kg.ha-1 was the best treatment and can be recommended to farmers where water resources are not limited. Water use efficiency (WUE) and irrigation water use efficiency (IWUE) were in the range of 5-9.25 and 9.2-14.6 kg m-3, respectively. The two-year average of yield response factor (Ky) for tomato was 1.18.