NITROGEN REMOBILIZATION IN CANOLA (BRASSICA NAPUS L.) AND ITS RELATION WITH DRY MATTER PRODUCTION AND SEED YIELD

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FARAJI ABOU ALFAZL; LATIFI N.; SOLTANI AFSHIN; SHIRANIRAD AMIR HOSSEIN; PAHLEVANI M.H.; SABOURI H.

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Journal: Journal of Agricultural Sciences and Natural Resources Year:2008 | Volume:15 | Issue:5 (SPECIAL ISSUE AGRONOMY AND PLANT BREEDING) Page(s): 119-129

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Title

NITROGEN REMOBILIZATION IN CANOLA (BRASSICA NAPUS L.) AND ITS RELATION WITH DRY MATTER PRODUCTION AND SEED YIELD

Author(s)

Keywords

CANOLAQ3

NITROGENQ2

REMOBILIZATIONQ3

SEED YIELDQ2

SOWING DATEQ3

Abstract

The increase in CANOLA (Brassica napus) area under cultivated in the east of Golestan province is indicated the success of plant breeders and agronomists in introduce appropriate varieties to cultivate in the area, and optimum management options to increase SEED YIELD. In order to evaluation the effect of different temperature and moisture regimes on shoot NITROGEN amount, NITROGEN amount and contribution in REMOBILIZATION, dry matter production and SEED YIELD of CANOLA a 2-year study was conducted at Agricultural Research Station of Gonbad. The experiment was a randomized complete block design arranged in a split-plot in two conditions, i.e. supplemental irrigation and rainfed. Five SOWING DATEs (6 Nov., 6 Dec., 4 Jan., 5 Feb. and 5 Mar.) were as main plots and 2 cultivars (Hyola 401 and RGS003) were as subplots. The shoot NITROGEN amount and REMOBILIZATION was affected by weather conditions during 2 years of the experiment. With a delay in sowing, shoot NITROGEN amount decreased, due to decrease in above-ground dry matter. At physiological maturity, the relationship between seed NITROGEN amount with above-ground dry matter and SEED YIELD was positive and very strong, explaining 87 and 96% of the variation for Hyola 401 and 89 and 97% of that for RGS003, respectively. The amount of leaf NITROGEN in REMOBILIZATION ranged from 44.5 to 140.3 kg/ha. Compare to four first SOWING DATEs, at last SOWING DATE, the contribution of stem and leaf REMOBILIZATION in SEED YIELD increased severely, that associated with severe decrease in harvest index and SEED YIELD of CANOLA. The contribution of stem and leaf REMOBILIZATION in SEED YIELD was 0.37-3.17% and 2.02- 12.38% in 2005-6, and 0.46-13.11% and 3.05-33.45% in 2006-7, respectively. The relationships between shoot NITROGEN amount, NITROGEN amount and contribution in REMOBILIZATION with dry matter and SEED YIELD can be used in crop modeling.

Cites

EFFECTS OF IRRIGATION REGIMES, NITROGEN RATE AND PLANT DENSITY ON DRY MATTER ACCUMULATION IN SUNFLOWER (VAR. IROFLOR)

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APA: Copy

FARAJI, ABOU ALFAZL, LATIFI, N., SOLTANI, AFSHIN, SHIRANIRAD, AMIR HOSSEIN, PAHLEVANI, M.H., & SABOURI, H.. (2008). NITROGEN REMOBILIZATION IN CANOLA (BRASSICA NAPUS L.) AND ITS RELATION WITH DRY MATTER PRODUCTION AND SEED YIELD. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 15(5 (SPECIAL ISSUE AGRONOMY AND PLANT BREEDING)), 119-129. SID. https://sid.ir/paper/9706/en

Vancouver: Copy

FARAJI ABOU ALFAZL, LATIFI N., SOLTANI AFSHIN, SHIRANIRAD AMIR HOSSEIN, PAHLEVANI M.H., SABOURI H.. NITROGEN REMOBILIZATION IN CANOLA (BRASSICA NAPUS L.) AND ITS RELATION WITH DRY MATTER PRODUCTION AND SEED YIELD. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2008;15(5 (SPECIAL ISSUE AGRONOMY AND PLANT BREEDING)):119-129. Available from: https://sid.ir/paper/9706/en

IEEE: Copy

ABOU ALFAZL FARAJI, N. LATIFI, AFSHIN SOLTANI, AMIR HOSSEIN SHIRANIRAD, M.H. PAHLEVANI, and H. SABOURI, “NITROGEN REMOBILIZATION IN CANOLA (BRASSICA NAPUS L.) AND ITS RELATION WITH DRY MATTER PRODUCTION AND SEED YIELD,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 15, no. 5 (SPECIAL ISSUE AGRONOMY AND PLANT BREEDING), pp. 119–129, 2008, [Online]. Available: https://sid.ir/paper/9706/en

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