Effect of rice husk rates and irrigation intervals on yield and some grain quality of rice [electronic resource].

Includes reference.

Two field experiments were carried out at Zarzoura Agric. Res. Station, Etai EIBaroud, Behaira Governorate. during 2004 and 2005 seasons It aimed to study the effect of husk rates (0, 1.2.3 and 4 tons/fed.) and irrigation intervals (4, 8 and 12 days during the growth stages) on growth. yield and its attributes as well as some grain quality characters of Giza 178 rice cultivar The differences between husk rates for root length. root dry weight.shoot dry weight. number of panlcles/m'. number of spikelets/panicle. panicle weight. number of filled grain /panicle. 1000-grain weight. grain yield Ifed. harvest index and broken percentage were significant in both seasons, while, amylase percentages was not significant in both seasons Husk at the rate of 4 tonlfed gave the highest values for all studied attributes. while. control treatment (zero husk rate) gave the highest broken percentage in the two seasons Irrigation at 4 days Interval significantly increased average values of all estimated rice yield studied attributes in the two seasons. While irrigation at 12 days interval gave the highest length and dry weight of root and broken percentages in both seasons. The interaction between husk rates and irrigation intervals was significant for most studied attributes in both seasons. Appling husk rice at the rate of 4 ton Ifed. under the longest irrigation intervals (12day) increased grain yield by 65.31% and 38.72% as compared with without added husk rice under the same irrigation treatment in 2004 and 2005 seasons. respectively. From results of this experiment. it may be concluded that, the adding 4 ton huskl fed. with irrigation every 4 days interval gave the highest grain yieldl fed. on rice under the condition of this investigation at EI- Behaira Governorate.

Summary in Arabic.

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