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Response of growth and petal yield of safflower to sowing dates, nitrogen fertillzer,levels and times of folair aplication with natural growth promoters "melagrow" [electronic resource].

By:

Attla, A. N. E

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Language: English Summary language: Arabic Description: p.1703-1716Other title:

إستجابة النمو ومحصول بتلات القرطم لمواعيد الزراعة ومستويات السماد النيتروجينى ومواعيد الرش بمنشطات النمو الطبيعية (ميلاجرو) [Added title page title]

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Mansoura University Journal of plant production, 2011 v. 2 (12) [electronic resource].

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In: Mansoura University Journal of Plant Production 2011.v.2(12)Summary: Two field experiments were conducted at the Experimental Station, Faculty of Agriculture, Mansoura University, during the two successive winter seasons of 200912010 and 201012011. The main objectives of this study were detennining the effect of sowing datesi1 1t Sept.. 1" Oct. and 1" Nov.), nitrogen fertilizer levels (40, 60 and 80 kg Nlfed) and time of foliar application with "Melagrow" as natural growth promoter (without, one and two times) on growth and petal yield of safflower (Carthamus tinctorius, lo) cv. Giza 1.The obtained results could be summarized as follows: 1. Intermediate sowing date of safflower (1 11 October) significantly surpassed other sowing dates (1 11 September and 1at November) in all studied growth and petal yield characters, except Crop growth rate "CGR", Relative growth rate "RGR" and Net assimilation rate "NAR" which produced from sowing on 1" September in both seasons.

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Two field experiments were conducted at the Experimental Station, Faculty of Agriculture, Mansoura University, during the two successive winter seasons of 200912010 and 201012011. The main objectives of this study were detennining the effect of sowing datesi1 1t Sept.. 1" Oct. and 1" Nov.), nitrogen fertilizer levels (40, 60 and 80 kg Nlfed) and time of foliar application with "Melagrow" as natural growth promoter (without, one and two times) on growth and petal yield of safflower (Carthamus tinctorius, lo) cv. Giza 1.The obtained results could be summarized as follows: 1. Intermediate sowing date of safflower (1 11 October) significantly surpassed other sowing dates (1 11 September and 1at November) in all studied growth and petal yield characters, except Crop growth rate "CGR", Relative growth rate "RGR" and Net assimilation rate "NAR" which produced from sowing on 1" September in both seasons.

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