Effect of nitrogen and cycocel on some physiological properties and grain yield of rice (Oryza sativa L. )

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NAJAFI N.; SEYED SHARIFI R.; KHALILZADEH R.

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Journal: CROP PHYSIOLOGY Year:2019 | Volume:11 | Issue:3 (43) Page(s): 47-67

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Title

Effect of nitrogen and cycocel on some physiological properties and grain yield of rice (Oryza sativa L. )

Author(s)

NAJAFI N. | SEYED SHARIFI R. | KHALILZADEH R. | Issue Writer Certificate

Keywords

UreaQ2

Dry remobilizationQ1

Grain filling rate and Foliar applicationQ1

Abstract

In order to investigate the effect of nitrogen fertilizer application and Cycocel growth regulator on nitrogen utilization efficiency, some physiological characteristics and grain yield of rice, a factorial experiment was conducted in a randomized complete blocks design with three replications at Soume-esara Gilan in Province in 2013-2014. Factors investigated included the amount of nitrogen fertilizer at four levels (no nitrogen as control, application 100, 150 and 200 kilogram net nitrogen per hectare) from Urea source and four levels of cycocel (no use, 0. 8, 1. 6 and 2. 4 liter per hectare). The results showed that foliar application of 4. 2 liters per hectare of cycocel and application of 200 kilgram nitrogen per hectare, increased grain filling rate, effective grain length, grain length and effective grain filling period, number of grains per panicle and one-thousand grain weight. The highest dry matter transfer from stem and whole plant were 91. 57 and 6. 114 gram per meter respectively, and the highest share of remobilization and participation of stem reserves in grain yield, respectively, was 91. 47 and 04. 27 percent in the absence of nitrogen fertilizer application conditions and foliar application of 4. 2 liter per hectare of cycocel. The highest grain yield was obtained in the application of 200 kilogram per hectare nitrogen and the least was in the absence of nitrogen application. The highest nitrogen use efficiency was related to 100 kilogram nitrogen per hectare and was allocated to the application of 200 kilogram per hectare of nitrogen fertilizer. The highest nitrogen use efficiency was allocated to the use of 4. 2 liters per hectare of cycocel and the lowest to no use of cycocel. Foliar application of 0. 8., 1. 6 and 2. 4 liters per hater of cycocel increased grain yield by 12. 47, 21. 68 and 32. 05 percent, respectively, than control. It seems that foliar application of 2. 4 liters per hectare of cycocel and application of 200 kilogram per hectare of nitrogen can be a suitable tool for increasing rice grain yield.

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APA: Copy

NAJAFI, N., SEYED SHARIFI, R., & KHALILZADEH, R.. (2019). Effect of nitrogen and cycocel on some physiological properties and grain yield of rice (Oryza sativa L. ). CROP PHYSIOLOGY, 11(3 (43) ), 47-67. SID. https://sid.ir/paper/367267/en

Vancouver: Copy

NAJAFI N., SEYED SHARIFI R., KHALILZADEH R.. Effect of nitrogen and cycocel on some physiological properties and grain yield of rice (Oryza sativa L. ). CROP PHYSIOLOGY[Internet]. 2019;11(3 (43) ):47-67. Available from: https://sid.ir/paper/367267/en

IEEE: Copy

N. NAJAFI, R. SEYED SHARIFI, and R. KHALILZADEH, “Effect of nitrogen and cycocel on some physiological properties and grain yield of rice (Oryza sativa L. ),” CROP PHYSIOLOGY, vol. 11, no. 3 (43) , pp. 47–67, 2019, [Online]. Available: https://sid.ir/paper/367267/en

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