The effect of planting density and nitrogen fertilizer on yield and yield components of bean in Roudsar

Document Type : Research Paper

Authors

1 Ms.c graduated

2 assistant prof, lahijan

Abstract

Background and objectives: Whole grain product is an important rich-protein source after cereals and also is the second most important food source for human. Bean in terms of area and economic importance has the first place in Iran. It has been reported that more distance between the plants caused by more space around the plants lead to each one get more light and could have better photosynthetic activity and therefore have better growth rather than which one are closer together. Nitrogen fertilizers play an important role in the plant production. Evaluation of its application for different herbal product is very important. The aim of the present research was to evaluate the effect of different planting distances and levels of nitrogen fertilizer on yield and yield components of beans in the north of Iran.
Materials and methods: An experiment in complete randomized blocks with split plot arrangement in three replications performed in Roudsar city in 2014. The planting distance as main factor was in 3 levels (d1=30×10, d2= 40×10 and d3=50×10) and nitrogen fertilizer as second factor was in 4 levels (N1=control, N2=30, N3=60 and N4=90 nitrogen kg/ha).
Background and objectives: Pulses are rich in proteins and found to be main source of protein and second important constituent of human diet after cereals. Bean due to cultivation area and economic importance is the first among pulses in Iran. It has been reported that more distance between plants makes each plant received more light and photosynthetic activity increased. Nitrogen fertilizers have an important role in plant production. Therefore, the application of nitrogen fertilizer levels on each plant is very important. The purpose of this experiment was to investigate the effects of different planting intervals and nitrogen fertilizer levels on yield and yield components of beans in northern Iran.Materials and methods: The experiment was conducted as split plot in a randomized complete block design with three replications in Rudsar in 2014. For planting seeds, a local bean cultivar was used. The cultivation was carried out on June 15th. The main factor is the fixed distance on the row of 10 cm and the spacing between the row of planting in three levels: (30, 40 and 50 cm, with plant densities of 33, 25 and 20 plants per m2), and the sub factor was nitrogen fertilizer at four levels (control, 30, 60 and 90 kg nitrogen per hectare). Yield and yield components were measured.
Results: The results showed that planting distance, different levels of nitrogen fertilizer and the interaction between planting distance and nitrogen fertilizer levels on number of pods per plant, number of seeds per plant, seed yield, plant dry weight, biological yield and harvest index were significant. Plant height was affected by different levels of nitrogen and planting distance but weight of 100 seeds was affected by different levels of nitrogen fertilizer. In different planting distances, the spacing between planting rows of 40 cm for plant height, seed yield, plant dry weight and spacing between row 40 and 50 cm for the number of pod per plant and number of seeds per plant were Significant, while the highest biological yield was obtained from the spacing of 30 cm row spacing. Application of 60 kg N ha-1 for plant height, 100 seed weight, seed yield and harvest index had a significant superiority to other nitrogen levels.

Keywords

Main Subjects

References

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Journal of Crop Production
Volume 11, Issue 1
June 2018
Pages 73-84

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