Effects of drought stress and nitrogen on grain yield and some agronomic traits of red kidney bean cultivars

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Bayati Khyrolla; MAJNOUNHOSSEINI NASSER; Moghadam Hossein; BASIRI REZA

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Journal: Iranian Journal of Field Crop Science Year:2018 | Volume:48 | Issue:4 Page(s): 1069-1081

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Title

Effects of drought stress and nitrogen on grain yield and some agronomic traits of red kidney bean cultivars

Author(s)

Bayati Khyrolla | MAJNOUNHOSSEINI NASSER | Moghadam Hossein | BASIRI REZA | Issue Writer Certificate

Keywords

water stressQ2

yield & yield componentsQ2

Nitrogen fertilizerQ2

red kidney beanQ2

Abstract

To study the effects of different levels of irrigation and nitrogen on yield and yield components of two varieties of red kidney beans, a factorial split plot experiment in a randomized complete block design with four replications was conducted at research farm of College of Agriculture and Natural Resources, University of Tehran (Karaj) in 2015. Three irrigation levels comprised of 60 (normal), 90 (mild water stress) and 120 mm (sever) cumulative evaporation from open pan were assigned as main plots, four fertilizer treatments of zero (control), 50, 100 and 150 kg N ha-1 and two bean cultivars (Akhtar & D81083) compound in as sub plots. The mild and severe water stress commenced after 4th leaf stage onwards. The results showed that water stress significantly reduces the number of pods per plant, seeds per pod, seed weight, seed yield, biological yield, harvest index, number of branches and plant height. Applied Nitrogen fertilizer significantly intensified all traits, except pod weight, plant height and harvest index. Two varieties of kidney beans significantly differed in all traits; however, the line D81083 in terms of grain yield, biological and other components performed better than the Akhtar line. The D81083 line at normal irrigation with 150 kg N ha-1 and the Akhtar line at water stress condition with no N fertilizer application, respectively had the highest and the lowest harvest index and seed weight. The interaction of water stress and Nitrogen fertilizer on grain yield showed that the treatments of 150 kg N ha-1 in normal irrigation had the highest and the control (not fertilizer) under severe water stress had the lowest yield however, the difference between 100 and 150 kg N ha-was not significant. The results showed that nitrogen supply for crops in water stress conditions can somewhat reduce the impact of drought conditions, but the cultivar yield reaction and other traits in response to rise nitrogen levels at normal condition compared to drought condition was inconsistent more and have created significant differences between different levels of nitrogen.

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APA: Copy

Bayati, Khyrolla, MAJNOUNHOSSEINI, NASSER, Moghadam, Hossein, & BASIRI, REZA. (2018). Effects of drought stress and nitrogen on grain yield and some agronomic traits of red kidney bean cultivars. IRANIAN JOURNAL OF FIELD CROP SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 48(4 ), 1069-1081. SID. https://sid.ir/paper/153712/en

Vancouver: Copy

Bayati Khyrolla, MAJNOUNHOSSEINI NASSER, Moghadam Hossein, BASIRI REZA. Effects of drought stress and nitrogen on grain yield and some agronomic traits of red kidney bean cultivars. IRANIAN JOURNAL OF FIELD CROP SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2018;48(4 ):1069-1081. Available from: https://sid.ir/paper/153712/en

IEEE: Copy

Khyrolla Bayati, NASSER MAJNOUNHOSSEINI, Hossein Moghadam, and REZA BASIRI, “Effects of drought stress and nitrogen on grain yield and some agronomic traits of red kidney bean cultivars,” IRANIAN JOURNAL OF FIELD CROP SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 48, no. 4 , pp. 1069–1081, 2018, [Online]. Available: https://sid.ir/paper/153712/en

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