اثر فواصل آبیاری و تقسیط نیتروژن بر عملکرد و اجزای عملکرد کلزای بهاره

نوع مقاله: پژوهشی

نویسندگان

1 عضو هیات علمی دانشگاه آزاد اسلامی واحد ایلام- دانشجوی دکتری زراعت واحد علوم و تحقیقات

2 عضو هیات علمی دانشگاه آزاد اسلامی واحد دامغان


عنوان مقاله [English]

The effect of irrigation intervasl and nitrogen splitting on yield and yield components of spring canola

نویسندگان [English]

  • Abbas Maleki 1
  • Jafar Masoudsinaki 2
1 Faculty member of Islamic Azad University of Ilam
2 Faculty member of I.A. University of_Damqhan
چکیده [English]

In order to study of irrigation intervals  and nitrogen splitting  effects on yield  and yield  components  of two spring  cultivars  of Canola (Brassica napus L), an experiment  was conducted  in Spring  2003, at research  station of college  of agriculture,  Ferdowsi University  of Mashhad.  Experimental   design  was a split - plot  factorial based on  completely  randomize   block  design  with  three replications.   The   main  plot   factors   including   irrigation intervals  (7,14   and 21  days) and Canola  cultivars   (ORO  and MIDAS)  and nitrogen  splitting  (100:0   (N1),      (25:72 (N2)   ,  (50:50  (N3) and (0: I 00 (N4))   were allocated  to sub plat whit a factorial  arrangement.  Results showed   that number of pods per plant,  weight  of I 000 seeds .biological  yield,   seed yield   and oil  percentage  were reduced
with  increasing  irrigation  intervals.  Oil  percentage were affected by nitrogen splitting.   The highest  oil percentage was produced in treatment  of N3 and N4•   The weight of I 000 seeds and oil percentage  were affctcd  by variety. ORO  produced the   higher weight  of seeds (4.2 gr) than   MIDAS (2 gr),  but  MIDAS  produced   more oil percentage  than ORO. Oil  percentage was increased  by reduction  of  irrigation   intervals.   The highest seed yield reduction  was observed \ ith increasing  the irrigation intervals. From the splitting   treatment,   N2 and N3  showed a better  performance.

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