Effect of Sowing Dates and Different Concentrations of IBA ‎on the Multiplication of ‎Dodonaea viscosa ‎

Aysar Mohammad Salem AlMeaamari^*(1) and Alaa Hashem Younes AlTaai⁽¹⁾

(1). Horticulture and Forestry Department, Faculty of Agriculture, Al Mosul University, Iraq.

(*Corresponding author: Dr. Aysar Mohammad Salem AlMeaamari. E-Mail: aysaralsalim@yahoo.com).

Received: 21/03/2020 Accepted: 12/05/2020

Abstract

This study was conducted in a plastic house at the Department of Horticulture and Landscape Design, Faculty of Agriculture and Forestry, Mosul University, In tow dates (15^th November and 15^th February) during 2019/2020 season, in order to study the effect of the date of sowing and treatment with Indole Acid at concentrations of (0, 250, 500, 750, 1000 and 2000 mg/L), and the effect of the interaction between them on root ability of the half woody cuttings of Dodonaea viscosa plants, and the extent of its effect on improving the characteristics of root and plant growth. The experiment was laid according to completely randomized design CRD with two factors and 3 replicates per treatment, and ten cuttings per replicate. The data was statistically analyzed and its treatments were compared with Duncan multiple test. The results showed that the date of getting the cuttings and treatment with Indole acid had a significant impact on the studied traits. No rooting was observed at the first date, while the second date had a clear response after ten weeks of cultivation, where the highest rooting percentage was obtained (33.33 %) due to the treatment with a concentration of 1000 mg/L and the number of roots (14.43) and the highest value of root length (10.86 cm) and the number of vegetative branches (1.96) and the length of the vegetative branch (2.76 cm) besides the fresh weight of the roots (2.50 g) and the highest dry weight (0.08 g).

Keyword: Dodonaea viscosa, Sowing dates, IBA, Multiplication.

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**Determination of the Optimal Sowing Date of Quinoa [Chenopodium quinoa Willd] in Some Syrian Areas**

Saud Shehab^*(1) Thamer Alhenish⁽¹⁾ Attalla Algareeb⁽¹⁾ Weal Melly⁽²⁾ Ahmed Ez Aldeen⁽²⁾Ahmed Al Ali⁽²⁾ Abd AL Nasser Alomar⁽²⁾ Ryad Baleesh⁽¹⁾ and Mohamed Ali⁽¹⁾

(1). Crops Research Administration, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.

(2). Agricultural Research Center of Hama, GCSAR, Damascus, Syria.

(*Corresponding author: Dr. Saud Shehab. E-Mail: saudshehab@gmail.com).

Received: 22/07/2018 Accepted: 14/11/2018

Abstract

Experiments were carried out at Qarahta Research Station and Hama Research Center during the growing seasons 2016 and 2017. Four varieties were studied and three sowing dates, in order to identify the optimal planting date (1^st February, 15^th February and 15^th March) and the best variety (NSL-106398, AMS-13923, AMS-13761 and Zeer) in terms of yield. The Results of compound analysis of flowering days showed significant differences (P≤0.05) between locations, planting dates and varieties. The earliest was Qarahta location, third sowing date and Zeer variety (75, 59, 72 days) respectively, the same differences obtained for physiological maturity on third sowing date (114 days) and Zeer variety (120 days). The plant height had significant differences between locations and varieties where the highest values were for Hama location (157 cm), second sowing date (149 cm) and AMS-137161variety (168 cm). The heads number per plant showed significant differences for location, sowing dates and varieties and the highest values were for Qarahta location, first sowing date and AMS-13923 variety (8, 9, 9 heads) respectively. The grain yield showed significant differences, the highest grain yield was in Hama (3.510 t/ha), first sowing date (2.980 t/ha) and Zeer variety (3.620 t/ha). Zeer and NSL-106398 varieties and early sowing dates from 1^st to15^th February are recommended to plant in Syria.

Key words: Quinoa, Sowing dates, Morphological characteristics, Quinoa yield.

Full Paper in Arabic: PDF

The Effect of Planting Date on the Morphological Traits of Some Sweet Corn Genotypes (Zea mays L. saccharata. sturt)

Loubna Nasr Haidar^*(1)

(1). Department of Field Crops, Faculty of Agriculture, University of Aleppo, Aleppo, Syria.

(*Corresponding author: Dr. Lounna Nasr Haidar. E-Mail: lubnanaser82@gmail.com).

Received: 01/02/2018 Accepted: 02/03/2018

Abstract

The present research carried out at AL Salamieh city, Hama Governorate, during the season 2015, aiming to evaluate the morphological traits of three genotypes of sweet corn i.e Faihaa1, Randevo and Snekofa Karaliva under the effect of different sowing dates; 1^st and 15^th April, in order to determine the best variety and the most suitable sowing date in spring season. The results showed that the morphological traits of Faihaa1 genotype was higher than those of Randevo and Snekofa Karaliva in the first sowing date (1^st April), and the increase of ear length recorded (1.78-1.48 cm), and height of plant recorded in Faihaa1 and Randevo and Snekofa Karaliva were (130.95, 71.11 and 68.33 cm) respectively. Also, the results showed that there was a significant increase in kernel diameter, leaf area, and stem diameter in Faihaa1, comparing to Randevo and Snekofa Karaliva, while the highest ear length and kernel diameter were at the beginning of April for all genotypes.

Key words: Sweet corn, Genotypes, Sowing dates.

Full Paper in Arabic: PDF

Using Simulation Model PGSGC to Predict the Productivity of Rainfed Wheat Genotypes at Different Zones in Aleppo

Ahmad Shams Aldien Shaaban*⁽¹⁾ Abdullah Al-Yousef⁽²⁾ and Ahmad Haj Suliman⁽²⁾

(1). Department of Processing Data and Statistical Analysis, Center for Strategic Studies and Research, University of Aleppo. Aleppo, Syria.

(2). Aleppo Research Center, General Community for Scientific Agriculture Research (GCSAR), Damascus, Syria.

(*Corresponding other: Dr. Ahmad Shams Aldien Shaaban. E-mail: Shaabany57@gmail.com).

Received: 21/09/2016 Accepted: 27/10/2016

Abstract

This study was conducted to predict evapo-transpiration and rainfed wheat production in Aleppo province, Syria, using PGSGC (Plant Growes Small Grain Crops) simulation model under different scenarios, which contains different zones: Zone A (Yhmoul), zone B (Zerbeh) and zone C (Sfireh), and three sowing dates: early (first half of Nov.), medium (second half of Nov.), and late (the first half of Dec.), and two different wheat genotypes, one was early, while the other was late in maturity. The simulation was conducted during 1998-2015 using daily minimum and maximum temperatures, solar radiation, and rainfall. The simulation outputs showed a clear variation in the curves of the development of cumulative evaporation, cumulative transpiration, and dry matter accumulation (biological, and grain yield). The beginning of water stress was determined in days, besides the period which had a low fraction of transpirable water (FTSW). The evapo-traspiration varied between 207.9-220.9 mm at Sfireh, whereas, they ranged between 231.1-248.9 mm at Zerbeh, and ranged between 279.4-296.1 mm at Yahmoul. Evaporarted water was determined as ratio of total rainfed quantities varied according to different scenarios. The estimated values ranged between 57-64% at Sfireh, 52-58% at Zirbeh, and 41-49% at Yahmoul. The Grain yield decreased when using early maturity genotype at early sowing date by 395, 393, and 538 kg/ha when sown at the medium date. Also, the grain yield decreased by 640, 656, and 927 kg/ha when sowing date delayed to late date at Sfireh, Zerbeh, and Yhmoul, respectively. The lowest loss in grain yield achieved (19%) by delaying sowing date, and using late maturity genotype at Yhmoul. This loss accounted about 48 kg/ha when delaying sowing date from early date to medium date. This loss accounted about 17.12 thousand tons for the cultivated areas of rainfed wheat at Izaz (Yhmoul) region during 2014/2015 season.

Key Words: Simulation Model PGSGC, Evapo-transpiration, Sowing dates, Stability zones, Rainfed wheat genotypes.

Full paper in Arabic: PDF

Loubna Nasr Haidar*(1)

Loubna Nasr Haidar^*(1)