Category Archives: Fertility

Effect of Phosphate and Potassium Humate on Growth and ‎Productivity Traits of Maize (Zea Mays L.) Cultivated in ‎Calcareous Soil

Osama Hatta(1) Ghiath Alloush*(2) and Rabee Zainah(1)

(1). Lattakia Research Center, General Commission for Scientific Agricultural Research GCSAR, Damascus, Syria.

(2). Department of Soil and Water Sciences, Faculty of Agricultural Engineering, University of Tishreen, Latakia, Syria. 

(*Cprresponding author: Dr. Ghiath Alloush. E-Mail: galloush@scs-net.org).

Received: 17/01/2020                               Accepted: 04/04/2020

Abstract

A field experiment was conducted in calcareous soil (CaCO3 = 49.7%) during 2018 season at Stkheres Research Station in Lattakia to study the effect of humates (0 and 25 kg K-humate/ha) on the response of maize crop (Tango hybrid) to TSP application (0 – 30 – 60 – 90 – 120 and 240 kg/ha). The experiment therefore consisted of 12 treatments with three replicates, and plots were completely randomized. Growth and P uptake were followed on complete selected plants 56 and 101 days from sowing, corresponding to VT and V6 of maize phonological stages. At harvest (after 101 days), productivity of grain yield and straw were measured and some efficiency parameters related to growth. Also, P uptake and productivity were calculated. Maize plants produced the highest dry matter in non-humic treatments at VT stage in the treatment P5H0 (115.1g/plant), which was not significantly different compared to the second TSP application rate in the presence of humate (treatment P2H1=112 g/plant). The analysis of variance showed a highly significant effect for both phosphate and humates applications on relative grain yield increase (RGYI), which increased in P3H0 treatment by 21.5% and in P3H1 treatment by 28.1%. Humate application did not provide a significant impact on the phosphate utilization efficiency.

Keyword: Phosphate fertilizer TSP, Potassium humate, Zea mays, Calcareous soil.

Full paper in Arabic: PDF

Zeolite Effect on Two Saline Alkaline Soils and the Productivity of Some Forage Crops under Deir Azzor Governorate Conditions

Zeolite Effect on Two Saline Alkaline Soils and the Productivity of Some Forage Crops under Deir Azzor Governorate Conditions

Arij Khuder*(1) Awadis Arslan(2) and Omar Abdulrazzak(3)

(1). The General Commission for Scientific Research
(2). The Higher Commission for Scientific Research
(3). Department of soil and soil reclamation/Faculty of Agriculture DeirAzzor.
(*Corresponding author: Dr. Arij Khuder. Email: areejalkeder@gmail.com).

Received: 20/04/2016                           Accepted: 24/05/2016

Abstract

Two forage crops sorghum and barley were sown within crop rotation to study the effect of zeolite on two saline alkaline soils, in two soils differ in salinity where the ECe values of (7.92 and 14.91)  dS/m for the first and second soils, respectively. The experiment was conducted at the Third Location of Almrieih, Agricultural Research Center in Euphrates Basin, Deir Ezzor/Syria. Zeolite was added in two rates (20 and 30 t/ha) besides the control (no addition), using Randomized Complete Block Design RCBD, with three replicates. The results obtained by the end of 2009/2010 season showed a reduction in soils salinity under the effect of adding zeolite. The application of zeolite 30 t/ha was superior in ECe reduction, where it reached 15 and 23% compared with control for medium and high salinity soils, respectively that cultivated with sorghum. The reduction rates for the soils cultivated with barley were 18.8 and 17.89% for medium and high salinity soils, respectively. Also there was a reduction in the pH and the concentration of ions in the soil extracts. The analysis showed positive improvement in soil physicist, chemical and fertility characters because of zeolite addition, such as ESP reduction, which it reached 35.48 and 28.40 % compared with control for medium and high salinity soils, respectively cultivated with sorghum. The reduction rates for the soils cultivated with barley were 44.84 and 35.73% for medium and high salinity soils, respectively. The results exhibited an increase in the productivity of fresh and dry weight of sorghum and grain yield of barley, as a result of zeolite addition, where the increase in yield for medium salinity soil was double than that of high salinity soil. The addition of zeolite of 30 t/ha was significantly superior over the other treatment and the control.

Keywords: Zeolite, Barley, Sorghum, Soil salinity and alkalinity, Forage productivity, Grain yield.

Full paper in Arabic: Zeolite Effect on Two Saline Alkaline Soils and the Productivity of Some Forage Crops under Deir Azzor Governorate Conditions

The Effect of Different Levels of Nitrogen Fertilizer and Manure Biogas on the Productivity of Maize and Some Soil Properties

Lina Maydaa(1) Zuhair Zaher(1) Nabila Kridi*(1) and Haitham Eid(2)

(1). Natural Resources Administration, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.
(2). Tartous Agricultural Research Center, Damascus, Syria.
(*Corresponding author: Eng. Nabila Kridi. E-Mail: nabilakridi@hotmail.com).

Received: 18/12/2015                           Accepted: 20/04/2016

Abstract

This study aimed to assess the impact of nitrogen fertilizer, and biogas manure on the productivity of hybrid maize crop (cv. Merritt), and some soil properties, at Western Zahid Research Station, Agricultural Research Center of Tartous, GCSAR/Syria, during the seasons 2011, 2012, and 2013. Complete Randomized Block Design (CRBD) was adopted with three replicates. The treatments were 12 (3 levels of nitrogen fertilizer i.e., 0, 12, and 24 kg/ha, and 4 levels of biogas manure i.e., 0, 6, 8, and 10 l/ m2). The results showed a significant increase in the productivity of maize by increasing the addition of manure biogas and mineral nitrogen fertilizer. The best treatment was fertilized by 24 kg N/ ha, and 10 l/m2 of biogas manure in all three seasons (15.82, 16.31.16.89 ton /ha, respectively). Soil organic matter was increased in most treatments which fertilized with biogas manure. It was observed a gradual increase in the soil organic matter with the increment in manure biogas in the absence of N fertilizers compared with the control. Total nitrogen increased in the soil gradually by increasing the addition of manure biogas. As well as the available phosphorus and potassium in soil increased in all treatments of manure biogas.

Key words: Manure biogas, N fertilizers, Organic matter, Soil properties, Maize.

Full paper in Arabic: The Effect of Different Levels of Nitrogen Fertilizer and Manure Biogas on the Productivity of Maize and Some Soil Properties

The Effect of Different Rates of Two Pesticides (Benomyl and Abamectin) on Growth and Number of N2 Fixation Bacteria Cells (Azotobacter and Burkholderia spp)

Merfat T. Ben Mahmud*(1) and Eman A. AL Ferjani(1)

(1). Department of Soil and Water, Faculty of Agriculture, Tripoli University, Tripoli, Libya.
(*Corresponding author: Dr. Merfat Ben Mahmoud. Email: dr.mbenmahmoud@yahoo.com).

Received: 04/04/2017                                     Accepted: 08/06/2017

Abstract

A laboratory experiment was carried out with Randomized Completely Block Design (RCBD), to study the effect of two chemical pesticides: fungicide (Benomyl 50%) and Acaro-Insecticide (Abamectin) with three rates for each treatment, on growth and number of Azotobacter and Burkholderia. Three dilution of inculcation bacteria (10-4, 10-5, and 10-6) with four periods of incubation (3, 7, 14, and 21) days were used for measuring (MIC) of bacteria cells number. The results showed that the minimum (MIC) value of Benomyl fungicide with dilution of (10-4) was (1.22 g/L), and (0.5 g/L) for each dilution of (10-5 and 10-6), after twenty-one days of incubation for Azotobacter and Burkholderia. The minimum value of (MIC) for Abamectin insecticide was (0.875 ml/L) for the periods of (7, 14 and 21 days) of incubation with all dilution inoculations of Azotobacter and (14 and 21 days) of incubation for Burkholderia. The results concluded that Benomyl and Abamectin had a different effect on growth and number of the studied bacteria according to their concentrations, and incubation periods. Also Azotobacter and Burkholderia were more tolerance for the dilution of 10-4 of pesticides as compared with other concentrations 10-5,    10-6.

Key wards: Azotobacter, Burkholderia, Benomyl fungicide, Abamectin insecticide.

Full paper in Arabic: The Effect of Different Rates of Two Pesticides (Benomyl and Abamectin) on Growth and Number of N2 Fixation Bacteria Cells (Azotobacter and Burkholderia spp)