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Evaluation of the effects of supplemental irrigation and planting arrangement on yield and yield components of field pea (Pisum sativum L.) in Gonbad region
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Faramarz Sayyedi *   , Yunes Mohammad Nezhad |
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Abstract: (996 Views) |
Introduction: Field pea (Pisum sativum L.) is an annual cool-season legume rich in essential amino acids lysine and tryptophan, and it holds great importance in crop rotation and enhancing biodiversity. This plant is particularly important because of its ability to fix nitrogen, utilize autumn rains, and break the cycle of diseases and pests. This experiment was carried out to determine the optimal irrigation timing and planting arrangement of field peas.
Materials and methods: To investigate the effects of supplementary irrigation and planting arrangement on pod yield and yield components of field pea (Pisum sativum L.) cv. Green Arrow, an experiment was conducted in a split factorial arranged in an RCBD with three replications at the Agricultural Research Station of Gonbad, Iran for two years (2019-2020). The main plots consisted of four irrigation treatments: once at the beginning of flowering, once at the beginning of pod, both at the beginning of flowering and pod formation and rainfed (RF) condition. The subplot was a combination of two factors: row spacing (17 and 34 cm) and within-row distance (6, 8, 10, and 12 cm). The investigated traits were the number of pods per plant, seeds per pod, 100-seed weight, the pod yield, and the number of branches.
Results: The combined analysis of variance revealed significant effects of year, row spacing, within-row distance, and the year-by-irrigation interaction on the number of pods per plant. The number of seeds per pod was significantly affected by within-row distance. The row spacing and within-row distance significantly influenced the 100-seed weight. The pod yield was significantly affected by irrigation, row spacing, and within-row distance. One irrigation at the beginning pod or two irrigations (beginning flowering + beginning pod) increased the field pea pod yield by about 1800 kg. Increasing the row spacing from 17 to 34 cm increased the number of pods per plant and pod yield. The highest pod yield (16349 kg/ha) was achieved with a within-row distance of 10 cm. A further reduction in row spacing could not compensate for the reduction in the number of pods per plant.
Conclusion: Based on the results, we recommend a row spacing of 34 cm and a within-row distance of 10 cm for field peas in the Gonbad region. Additionally, one irrigation at the beginning of pod formation is advisable. |
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| Keywords: Irrigation, Planting arrangement, Row spacing, Pod per plant, Pod formation |
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Full-Text [PDF 427 kb]
(168 Downloads)
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Type of Study: Research |
Subject:
Ecophysiology
Received: 2024/03/16 | Accepted: 2023/09/21 | Published: 2023/09/21
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