Original Article
Abolfazl Hedayatipour; mostafa Godarzi; mahmod Safari; mona Tahmasebi; seyed Mohsen Seyedi
Abstract
To investigate the effect of bed width on yield and yield components of beans, an experiment was conducted using a split-plot arrangement in a randomized complete block design with three replications at the Khomein Bean Research Station during 2022–2023. The main plot treatments were: planting ...
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To investigate the effect of bed width on yield and yield components of beans, an experiment was conducted using a split-plot arrangement in a randomized complete block design with three replications at the Khomein Bean Research Station during 2022–2023. The main plot treatments were: planting on beds with a width of 80 cm (P1), planting on beds with a width of 30 cm (P2), and flat planting (P3). The subplots consisted of three bean varieties: Line 492 (Type I, upright growth habit, V1), Kusha variety (Type II, semi-creeping, V2), and Saleh variety (Type III, creeping, V3). Measured variables included machine field working capacity (ha/h), biological and dry grain yield (kg/ha), 100-seed weight (g), and harvest index. The results showed that the highest grain yields were obtained with bed widths of 30 cm and 80 cm, yielding 2349 kg/ha and 2261 kg/ha, respectively. The lowest yield was recorded in the flat planting method (conventional treatment), at 1489 kg/ha, which was significantly lower (at the 5% level) than the other treatments. For both creeping and semi-creeping bean varieties, the highest yields were achieved using bed cultivation. Economic analysis revealed that cultivation on 30 cm and 80 cm wide beds was the most cost-effective method. The length of irrigation tape required for flat planting was 2000 m/ha, compared to 13,500 m/ha for bed planting methods. Given the advantages of bed cultivation, flat planting (conventional method) is not recommended for bean production.
Original Article
Mohammad Ali Rostami; Amir Eslami; Shokoofeh Sarikhani Khorrami
Abstract
This study investigated the effects of two irrigation methods (drip tape and furrow irrigation) and three wheat planting patterns (2, 3, and 4 rows on raised beds) on wheat yield and agronomic indicators. The experiment was conducted as a split-plot design within randomized complete blocks with six treatments ...
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This study investigated the effects of two irrigation methods (drip tape and furrow irrigation) and three wheat planting patterns (2, 3, and 4 rows on raised beds) on wheat yield and agronomic indicators. The experiment was conducted as a split-plot design within randomized complete blocks with six treatments and three replications over two growing seasons. Wheat was cultivated on wide raised beds measuring 60 cm in width, 15-20 cm in height, with 75 cm center-to-center spacing (60 cm bed width and 15 cm furrow width). Measured parameters included grain yield, germination percentage, emergence rate, tillering capacity, weed density, and water productivity. Mean comparisons revealed that drip tape irrigation increased yield by 20.6% (7,811 vs. 6,474 kg/ha) and improved water productivity by 24.3% (1.28 vs. 1.03 kg/m³) compared to furrow irrigation, while showing 47.3% lower weed density. Among planting patterns, the 3-row arrangement demonstrated optimal performance with 7,668 kg/ha yield and 1.24 kg/m³ water productivity. The superior treatment combination - drip irrigation with 3-row planting on wide raised beds - achieved maximum yield (8,311 kg/ha) and water productivity (1.36 kg/m³). These findings demonstrate that drip tape irrigation combined with 3-row planting on wide raised beds simultaneously enhances yield, water use efficiency, growth parameters, and weed control. This integrated approach is recommended as an effective strategy for wheat cultivation in water-limited environments, offering both agronomic and resource conservation benefits. The results highlight the importance of optimized irrigation and planting configurations for sustainable wheat production systems.
