Effect of sowing date on the yield performance of three sorghum cultivars in coastal strip of east Hormozgan

Subject Areas : Journal of Plant Ecophysiology

Ramezan Rezazadeh ¹ (Faculty memebr of Hormozgan Agricultural and Natural Resources Research and Education Center)
hamed Hassanzadeh Khankahdani ² (Researcher of Agricultural Research Station of Minab)
Yaaghoob Hosseini ³ (Hormozgan Agricultural and Natural Resources Research and Education Center, , AREEO, Bandar Abbas)

Received: 2017-06-25 Accepted : 2018-04-19 Published : 2019-12-22

Keywords: Fresh forage, Minab, KFS1, KFS2, Speedfeed,

Abstract :

IIn order to determine the best sowing date for forage Sorghum in eastern regions of Hormozgan coastal strip, an experiment was conducted for two years as a strip plot in RCBD at Agricultural Research Station of Minab. Sowing dates (including 7 and 23 Oct., 6 and 22 Nov., 6 and 22 Dec., 21 Mar., 4 and 21 Apr. and 20 May) were as main plot and three Sorghum cultivars [Speedfeed (SPF), KFS1 and KFS2] were as subplot. Forage yield responses such as number of harvest per year, fresh forage yield per year, fresh forage yield per harvest, plant height, crude protein content and dry matter percentage were measured. The highest number of harvest per year was observed in SPF cultivar planted at 7 Oct. (8.2), and 6 Nov. and Dec. (7.2) and the lowest in KFS1 cultivar planted at 21 Mar. (2.5) and 4 Apr. (1.5 harvest). The maximum fresh forage yields was obtained for KFS2 planted on 21 Mar. (176.7 t/ha), for KFS1 planted on 23 Oct. (113.0 t/ha) and for SPF planted on 21 Apr. (173.7 t/ha). The highest crude protein content (~20%) was observed in sowing dates of 7 Oct., 20 May and 23 Oct.; sowing date of 22 Nov. had the lowest crude protein content (13.4%). The best sowing dates for coastal regions of Hormozgan for KFS2 and SPF as high yielding cultivars of this trial with 176.5 and 173.5 t/ha/yr fresh forage, were 21 Mar. and 21 Apr., respectively.

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