EFFECTS OF NITROGEN FERTILIZER AND SPACING ON YIELD AND ITS COMPONENTS OF PROMISING RICE LINE (843 NUMBERS)

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MOHADESI A.; ABBASIAN A.; BAKHSHIPOUR S.; SALEHI M.M.

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Journal: JOURNAL OF CROP ECOPHYSIOLOGY Year:2010 | Volume:2 | Issue:3 Page(s): 198-208

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Title

EFFECTS OF NITROGEN FERTILIZER AND SPACING ON YIELD AND ITS COMPONENTS OF PROMISING RICE LINE (843 NUMBERS)

Author(s)

MOHADESI A. | ABBASIAN A. | BAKHSHIPOUR S. | SALEHI M.M. | Issue Writer Certificate

Keywords

RICE (ORYZA SATIVA L.)Q2

PATH ANALYSISQ2

STEPWISE REGRESSIONQ3

THOUSAND SEED WEIGHTQ2

HARVEST INDEXQ2

Abstract

In order to study the effects of nitrogen fertilizer and plant density on yield and its components of promising rice Line (843 number), an experiment was conducted for a period of two years (2006-2007) at the Rice Research Station of Tonekabon (Chaparsar). The experimental design was split plot on basis of randomized block design with 3 replications. Three Nitrogen fertilizer levels consist of 200, 250 and 300 kg N/ha were applied in main plots and subplots which consisted of split application of spacing at four levels (11×30, 15×30, 20×20 and 25×25 cm). Results showed that the rates of nitrogen fertilizer had significant effect on 1000-seed weight, plant height, number of filled grain, biological yield and HARVEST INDEX. Meanwhile different spacing had significant effects in the all mentioned traits except number of filled grain and HARVEST INDEX. Statistical analysis indicated that grain yield decreased with increasing of spacing and the highest grain yield was obtained in 20×20 cm (8004.2 kg/ha) spacing treatment. Grain yield increased with increasing nitrogen application but this increasing wasn’t significant. The ideal spacing of 20×20 cm was determined with an efficient N dosage level of 200 kg N/ha for this promising rice line. The results of STEPWISE REGRESSION and PATH ANALYSIS for grain yield showed that biological yield, HARVEST INDEX and number of tiller have the greatest effect on grain yield and these traits were the most important causing traits mostly interpreting the grain yield variation.

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APA: Copy

MOHADESI, A., ABBASIAN, A., BAKHSHIPOUR, S., & SALEHI, M.M.. (2010). EFFECTS OF NITROGEN FERTILIZER AND SPACING ON YIELD AND ITS COMPONENTS OF PROMISING RICE LINE (843 NUMBERS). JOURNAL OF CROP ECOPHYSIOLOGY, 2(3), 198-208. SID. https://sid.ir/paper/176394/en

Vancouver: Copy

MOHADESI A., ABBASIAN A., BAKHSHIPOUR S., SALEHI M.M.. EFFECTS OF NITROGEN FERTILIZER AND SPACING ON YIELD AND ITS COMPONENTS OF PROMISING RICE LINE (843 NUMBERS). JOURNAL OF CROP ECOPHYSIOLOGY[Internet]. 2010;2(3):198-208. Available from: https://sid.ir/paper/176394/en

IEEE: Copy

A. MOHADESI, A. ABBASIAN, S. BAKHSHIPOUR, and M.M. SALEHI, “EFFECTS OF NITROGEN FERTILIZER AND SPACING ON YIELD AND ITS COMPONENTS OF PROMISING RICE LINE (843 NUMBERS),” JOURNAL OF CROP ECOPHYSIOLOGY, vol. 2, no. 3, pp. 198–208, 2010, [Online]. Available: https://sid.ir/paper/176394/en

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