Tag Archives: Nitrogen fertilization

Effect of Plant Density and Nitrogen Fertilization on Some ‎Morphological, Physiological and Productivity Characteristics ‎of sorghum bicolor L.‎

Mohamed Abd Alaziz(1) and Fatema Antar*(1)

(1). Crops Department, Faculty of Agriculture, Tishreen University, Latakia, Syria.

(*Corresponding author: Eng. Fatema Antar. E-Mail: anterfatemah@gmail.com). 

Received: 28/11/2018                               Accepted: 06/02/2019

Abstract

The research was carried out in the coastal area at Bauqa Farm, and at the laboratories of Faculty of Agriculture, Tishreen University, during the season 2018 in order to study the effect of plant density and nitrogen fertilization and their interaction on some morphological, physiological and productivity parameters of sorghum plant to obtain the highest grain yield. Jumbo variety  was used which obtained from General Organization of Seed Multiplication in Latakia. The design of the experiment was Randomized Completely Block Design (RCBD) with the arrangement of split plot design with three replicates. The density treatments were distributed in the main plots (3.33, 5 and 10 plants/m2), while nitrogen fertilization levels were allocated in the sub plots (200, 300 and 400 kg/ha) in addition to the control treatment without nitrogen addition. The density of 10 plants / m2 and the  nitrogen fertilization of 300 kg/ha gave the highest grain yield (ton/ha) under the conditions of the experiment. While the density of 3.33 plants/m 2 and the nitrogen addition of 400 kg/ha gave the  highest length of the plant number of leaves/plant, number of grains/rosset and weight of 100 seeds. The grain yield correlated positively and significantly with rosset length (r=0.541**), grains number (r=0.509**),  area index (r=0.502 **) and the rosset weight (r=0.456 **). Thus it is possible to improve the productivity by improving the mentioned traits above due to the positive correlation with them.

Key words: Sorghum bicolor, Plant density, Nitrogen fertilization, Yield, Morphological traits.

Full paper in Arabic: PDF

Response of Mono and Multigerm Varieties of Sugar Beet (Beta vulgaris L.) to Nitrogen Fertilization, Using Two Irrigation Methods (Sprinkler – Furrow) During Summer Time

Awadis Arslan(1), Entessar Al Jbawi(1), Ziad Al Ibrahim(2)& Khaled Al Ismaeel(2)

(1). General Commission for Scientific Agricultural Research (GCSAR). Douma, P. O. Box 113, Damascus, Syria.
(2). Scientific Agricultural Research Center of Der- Al Zur. Der-Al Zur, Syria.

(Corresponding author: Dr. Entessar Al Jbawi: General Commission for Scientific Agricultural Research (GCSAR). Douma, P. O. Box 113, Damascus, Syria. E-mail: dr.entessara@gmail.com).

Received: 19 / 07 / 2014           Accepted: 04 / 10 / 2014

Abstract

The field experiment was conducted at Al Mray’eyh Research Station, Scientific Agricultural Research Center of Der- Al Zur (NE Syria) during 2009/2010 and 2010/2011 seasons, to study the effect of two methods of irrigation (sprinkler, furrow) and five levels of nitrogen fertilizers (0, 60, 120, 180 and 240), on technological and production traits of three sugar beet varieties, i.e. Dita, Reda, and Nadir in summer time. The experiment was sown in August. A split split plot design was used with four replications. The results exhibited that the addition of 180 pure unit of nitrogen achieved the best technological and production traits. Dita monogerm variety surpassed the other varieties in most of the technological and production characters. It is recommended the sprinkler irrigation, because it increased sucrose percentage (16.2%) and root yield (73.7 ton/ha), as compared with furrow irrigation (15.9%, 67.2 ton/ha) respectively, besides sprinkler irrigation saves water consumption about 20% as compared with furrow irrigation method.

Key words: Sugar beet, Summer time, Irrigation methods, Nitrogen fertilization, Technological traits, Production traits, Varieties.

 

Full paper in Arabic:

استجابة أصناف من الشوندر السكري(Beta vulgaris L) وحيد ومتعدد الأجنة للتسميد الآزوتي باستخدام طريقتين للري (رذاذ وسطحي) في العروة الصيفية.