The effect of the amount nitrogen applied on grain yield and dry matter remobilization of maize (Zea mays L. ) in drought stress conditions

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Banisaidi A.K.; Motamadi M.

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Journal: PLANT ECOPHYSIOLOGY (ARSANJAN BRANCH) Year:2020 | Volume:12 | Issue:41 Page(s): 68-77

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Title

The effect of the amount nitrogen applied on grain yield and dry matter remobilization of maize (Zea mays L. ) in drought stress conditions

Author(s)

Banisaidi A.K. | Motamadi M. | Issue Writer Certificate

Keywords

AccumulationQ1

dry matterQ2

nitrogen fertilizerQ2

remobilizationQ2

Abstract

Drought stress is one of the main factors limiting agricultural production in most parts of the world. Research showed the recognizing the sensitive stage of plant growth can cause appropriate in terms of crop water stress management. In order to assess the effect of the water stress and nitrogen on grain yield, nitrogen uptake efficiency, and dry matter remobilization on corn (Zea mays L. ), a field experiment was carried out in shushtar in 2013. The experiment was carried out in a split plot design based on randomized complete blocks with four replications. This study included drought stress as irrigation at different stages of plant growth (V1= withholding irrigation at the beginning of 10 leaves to emerge tassel, V2= withholding irrigation at rise of 50 percent of tassel, until becoming a brown silk, V3= irrigation according to plant requirement until the end of the growing season) as main plot and three levels of nitrogen rate (50, 100, 150 kg N/ha) as sub plots were investigated. The results showed that the grain yield significantly under the influence of stress the lack of moisture. The maximum dry matter remobilization was in the rise of 50 percent of tassel, until becoming a brown silk and increase N fertilizer, dry matter remobilization decreased. Treatment of no water stress (control) and application of 150 kg N/ha with an average of 7. 4% has a minimum rate of dry remobilization efficiency. The rise of 50 percent of tassel, until becoming a brown silk treatment, with an average of 29. 1% has the maximum contributions of dry matter remobilization in grain yield. Increase the amount of nitrogen was significantly reduced nitrogen agronomic efficiency. Applied moisture and N fertilizer on before flowering stage in the event of water stress at this stage was increased through stimulation of the amount of dry matter remobilization can be prevented to some extent a drastic reduction of grain weight.

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APA: Copy

Banisaidi, A.K., & Motamadi, M.. (2020). The effect of the amount nitrogen applied on grain yield and dry matter remobilization of maize (Zea mays L. ) in drought stress conditions. PLANT ECOPHYSIOLOGY (ARSANJAN BRANCH), 12(41 ), 68-77. SID. https://sid.ir/paper/188443/en

Vancouver: Copy

Banisaidi A.K., Motamadi M.. The effect of the amount nitrogen applied on grain yield and dry matter remobilization of maize (Zea mays L. ) in drought stress conditions. PLANT ECOPHYSIOLOGY (ARSANJAN BRANCH)[Internet]. 2020;12(41 ):68-77. Available from: https://sid.ir/paper/188443/en

IEEE: Copy

A.K. Banisaidi, and M. Motamadi, “The effect of the amount nitrogen applied on grain yield and dry matter remobilization of maize (Zea mays L. ) in drought stress conditions,” PLANT ECOPHYSIOLOGY (ARSANJAN BRANCH), vol. 12, no. 41 , pp. 68–77, 2020, [Online]. Available: https://sid.ir/paper/188443/en

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