African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6559

Table of Content: 27 December; 7(49)

December 2012

Programmed cell death in wheat starchy endosperm during kernel development

  Wheat starchy endosperm is fated to die prior to seed maturation. To reveal the death process of wheat starchy endosperm, morphological variations of the nucleus, the breakage of nuclear DNA, the activities of enzymes related to starch synthesis and antioxidization, and grain weight were investigated. Results showed that wheat starchy endosperm death consisted of two main steps: Nucleus degeneration and...

Author(s): Yifang Chen, Jun Zhang, Peisong Xie, Weidong Zhou, Jianmin Chen and Cunxu Wei

December 2012

Prediction equations for estimating tree height, crown diameter, crown height and crown ratio of Parkia biglobosa in the Nigerian guinea savanna

  Relationships between stem diameter, tree height, crown diameter, crown height and crown ratio of Parkia biglobosa were investigated and regression prediction models were derived. The result revealed positive correlations between stem diameter, tree height, crown height and crown diameter which are significant. The corresponding F-values from analyses of variance are also significant (P=0.05),...

Author(s): Toma Buba

December 2012

Deciphering the genetic basis of stripe rust resistance of exotic winter wheat cultivars and their utilization in pre-breeding

  Genetic basis of stripe rust resistance was investigated in two exotic winter wheat cultivars namely, Spaldings prolific and China84-40022. Inheritance was studied with the most virulent stripe rust race 46S1119 (avirulent on Yr1, 5, 10, 15, 27, SP, Su, CV and virulent on Yr2, 3, 4, 6, 7, 8, 9, 22, 23, 25). The stripe rust resistance of Spaldings prolific and China84-40022 were governed by...

Author(s): D. Datta, M. Prashar, S. C. Bhardwaj, Sanjay Singh, S. P. Das and Ashish Kumar

December 2012

Study of genetic variability, heritability and genetic advance for fruit quality characters in Teasle gourd (Momordica subangulata blume. subsp. renigera)

  Five female clones of Teasle gourd were evaluated to estimate the variability, heritability and genetic advance in randomized complete block design with four replications. Higher phenotypic coefficients of variation were observed for all the characters except fruit length at marketable stage. Total sugar in mesocarp, total sugar in exocarp, reducing sugar in mesocarp, ascorbic acid in exocarp,...

Author(s): Abhishek Naik, Shirin Akhtar, Arup Chattopadhyay and Pranab Hazra

December 2012

Evaluation of growth and yield responses of cocoyam (Colocasia esculenta) cultivars to rates of NPK 15:15:15 fertilizer

  This study was carried out in two locations in south eastern Nigeria in the year 2008 and 2009, to evaluate growth and yield responses of cocoyam cultivars to rates of NPK 15:15:15 fertilizer. This was aimed at identifying high yielding cocoyam cultivars and optimum rates of the fertilizer for optimum cocoyam production. Two locations: Nsukka (Enugu state) and Umudike (Abia state) were used for this study....

Author(s): P. E. Ogbonna and N. J. Nweze

December 2012

Chilling duration of Silifke-Mersin region and its affects on fruit growing

  This experiment was carried out during 1975 to 2011 in Silifke-Mersin. In this study, chilling duration of the last 35 years in Silifke-Mersin area (total chilling time below +7.2°C was calculated as hour) was determined and the effects of chilling duration on cultivation of temparate zone fruits were investigated. It was found that the winter season between the years of 1991 to 1992 was the coldest...

Author(s): Askin BAHAR and Levent SON

December 2012

Effect of bioregulators preharvest application on date palm fruit productivity, ripening and quality

  This study was conducted during 2010 and 2011 to investigate the effect of preharvest sprays on yield, harvest date, harvest period and fruit physico-chemical quality characteristics at commercial harvest date of Sokary date palm growing in Riyadh area, Saudi Arabia. These palms were sprayed at hababouk and khalal stages with naphthalene acetic acid (NAA), gibberellic acid (GA3),...

Author(s): H. A. Kassem, R. S. Al-Obeed and M. A. Ahmed

December 2012

Investigation of zinc release patterns in different soil orders using mathematical models

  Time dependent Zn extraction with diethylenetriaminepentaacetic acid (DTPA) extractant from five soil orders were studied for shaking periods of 1 min to 24 h. Zinc release rate from the studied soils was initially fast followed by a much slower rate trend. Power function was the best model describing Zn release data, followed by Elovich and parabolic diffusion models, respectively. Significant...

Author(s): Reza Ghasemi-Fasaei, Mahdi Najafi Ghiri and Esmaeil Farrokhnejad

December 2012

Analysis on technical efficiency of maize farmers in the northern province of Laos

  Since the last decade, cash crop farming in Laos has significantly been changing. The changes have made farmers required high input factors (labor, land, fertilizer and so on) to increase productivity. Meanwhile, farmers have low level of technical efficiency and operating farms unproductive. Therefore, the objectives of this study were to estimate the technical efficiency (TE) of maize farmers and...

Author(s): Southavilay Boundeth , Teruaki Nanseki, and Shigeyoshi Takeuchi

December 2012

Response of weaner rabbits to diets containing fermented mixtures of cassava peel and dried caged layers’ manure

  Interest on non-conventional sources of energy in animal feeding has increased in recent time but these new ingredients still await an adequate nutritional evaluation. Milled dried cassava peel and caged layers’ manure mixed in ratio 4:1(w/w), fermented for 7 and 14 days separately and screened for microbial load were used to replace maize in weaner rabbit diets designated as A (0% inclusion of the...

Author(s): F. A. S. Dairo and O. B. Egbeyemi

December 2012

Laboratory cultured faecal inoculum as a substitute for fresh rumen inoculum for in vitro feed evaluation

  This study was carried out to: (1) Preserve whole rumen fluid (RF) or faecal fluid (FF) by culturing using simple techniques; and (2) Study the effect of substituting fresh RF with fresh or laboratory cultured FF as an alternative inoculum source for in vitro fermentation. Faeces and RF were collected from fistulated Jersey cows and cultured (RF or FF with salivary buffer containing maize stover...

Author(s): Fabian Nde Fon, and Ignatius Verla Nsahlai

December 2012

Performance evaluation of tractor operated target actuated sprayer

  A tractor operated target actuated sprayer was developed and evaluated to reduce the off target application of chemical and thereby reduce soil and environmental pollution. From the observations, it is concluded that educator model IV was found to be the best connector with mixing chamber for the chemical and carrier liquid. The range of pressures adopted for chemical and carrier liquid produced droplets with...

Author(s): G. C. Jayashree and D. Anantha Krishnan

December 2012

Effect of soil amendment with yeasts as bio-fertilizers on the growth and productivity of sugar beet

  The use of yeast as a bio-fertilizer in agriculture has received considerable attention because of their bioactivity and safety for human and the environment. This study evaluated the effect of soil amendment with three newly isolated yeast strains on the productivity and the external and internal structure of sugar beet to prove their application as bio-fertilizer. We conducted a two-year pot experiment to...

Author(s):

December 2012

Endo beta 1-3(4) glucanase supplementation of barley based diet and its effects on some hematological parameters of common carp (Cyprinuscarpio)

  Carbohydrates are cheap energy sources in animal nutrition. These stuffs are rich in anti-nutrient factors which affect the animal physiological performance. Some main compositions are called non-starch polysaccharides which mainly composed of arabinoxylans (that is, in wheat, triticale and rye) and beta glucanases (that is, in barley and oats). In this study, 90 fish in three treatments (30 fish treatment-1)...

Author(s): Meysam Mohammadbeygi, Mohammad Reza Imanpour, Vahid Taghizadeh and Ali Shabani