African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6786

Table of Content: 25 May, 2017; 12(21)

May 2017

Understanding the need for transfer of biologically-based crop protection technology for soil pest control in vegetable production in Rwanda

Despite growth in Rwanda’s agricultural production ability, with food crops representing 33% of the National GDP and 80% of the population reliant on agriculture, food supply remains fragile. A factor which has significant impact on productivity is soil pests, whose effects filter through the whole value chain. Poor yields result in demand that exceeds supply, leading to higher food prices and reduced...

Author(s): Musebe R., Dusenge L., Agwanda C., Kajuga J., Waweru B., Karanja D., Hongmei L. and Day R.

May 2017

Amelioration of a degraded ultisol with hardwood biochar: Effects on soil physico-chemical properties and yield of cucumber (Cucumis sativus L)

A study was conducted in two consecutive cropping seasons to assess the effect of biochar on soil properties and yield of cucumber (Cucumis sativus L) in an intensive cucumber–maize rotation based system of Abakaliki, Southeastern Nigeria. Five rates of hardwood biochar (0, 2.5, 3.75, 5 and 6.25 t ha-1) were used for the study. The study was laid out as a randomized complete block design (RCBD) with five...

Author(s): C. N. Mbah, C. Njoku, C. C. Okolo, E. E. Attoe and U.C. Osakwe

May 2017

Climate conditions in the eastern amazon: Rainfall variability in Belem and indicative of soil water deficit

The objective of this study was to evaluate the regimes of temperature and rainfall in Belém, PA, Brazil, with emphasis on the start of the dry season in order to provide planning support for agricultural activities during years of climatic anomolies in the region. An initial analysis was done of the metropolitan region of Belém comparing it to the typology of Amazonian climates using rainfall data from...

Author(s): Lucieta Guerreiro Martorano, Maria Isabel Vitorino, Bruna Paula Pantoja Caxias da Silva, José Reinaldo da Silva Cabral de Moraes, Leila Sheila Lisboa, Eleneide Doff Sotta and Klaus Reichardt

May 2017

Sunflower seed yield under trickle irrigation using treated wastewater

Filed experiment was carried out in land near Ramtha Wastewater Treatment Plant during growing seasons of 2010 and 2011 to determine the effects of using treated wastewater on plant growth, seed yield and yield components of sunflower (Helianthus annuus L.) under trickle irrigation. Randomized complete block design (RCBD) for three irrigation treatments namely; I1= Full irrigation (Actual crop coefficient), I2= 80% of...

Author(s): Hamzeh Mohmmad Rawashdeh

May 2017

Insect pests infesting black pepper (Piper nigrum L.) in southwestern part of Ethiopia

Survey was carried out to study the distribution, infestation and damaging level of insect pests of black pepper during 2013/2014 cropping season in Southwestern Ethiopia. Insect pests were observed and identified at their sites in the surveyed areas. In addition, samples of insect pests and infected plant parts were collected and insect images were taken. The samples were diagnosed in Tepi National Spice Research...

Author(s): Teshale Daba, Habetewold Kifelew, Girma Hailemichael and Wakjira Getachew

May 2017

Genetic variability, heritability and genetic advance for quantitative traits in coffee (Coffea arabica L.) accessions in Ethiopia

Estimation of genetic parameters is pertinent as variability within population determines the extent of improvement achieved through crop improvement methods. In view of this, forty-nine coffee (Coffea arabica L.) germplasm accessions, which were collected from Gomma Woreda, were evaluated at Agaro with the objectives of assessing genetic variability, heritability and genetic advance for morphological traits. The...

Author(s): Getachew Weldemichael, Sentayehu Alamerew and Taye Kufa

May 2017

Knowledge and perceptions of plant viral diseases by different stakeholders in Zimbabwe’s agricultural sector: Implications for disease management

Plant viruses are major constraints to crop production worldwide, causing US$60 billion losses annually. This study assessed various agricultural sector stakeholders’ knowledge and perceptions of plant viruses in Zimbabwe. Data was collected from six provinces using surveys and participatory rural appraisal methodologies between December 2013 and October 2014. Maize streak virus, Tobacco mosaic virus, Cucumber...

Author(s): Charles Karavina, Vincent Tinashe Munyati and Augustine Gubba

May 2017

Forage productivity system evaluation through station screening and intercropping of lablab forage legume with maize under Irrigated lands of smallholder farmers

On station, farm studies were conducted in the eastern zone of Tigray to improve feed resource through integrating forage and cereal crops, to identify suitable and compatible lablab accessions for maize lablab intercropping under smallholder farmers, to demonstrate maize/lablab intercropping on farm, and to see farmer’s perception towards this technology. In the first study, eight lablab accessions were screened...

Author(s): Weldeyesus Gebreyowhens

May 2017

Nutritional composition of vegetables grown in organic and conventional cultivation systems in Uberlândia, MG

There is a growing concern about the presence of pesticides in food and the health problem they may cause. Awareness of this issue, consumers opt for organic food consumption. Organic agriculture is a farming system ecologically sustainable, economically viable and socially just, capable of integrating man and environment. This study evaluated the nutritional composition of some crops grown in an organic (Org) and...

Author(s): Luciana Nunes Gontijo, Cassiano Oliveira da Silva, Lorena Gomes Stort, Renata Maria Teixeira Duarte, Cristiane Betanho and Erika Maria Marcondes Tassi

May 2017

The growth and nutrition of pineapple (Ananas comosus L.) plantlets under different water retention regimes and manure

Despite the many advantages of pineapple plants offered by micropropagation, there is difficulty in rooting and slowness in the growth of seedlings, requiring a long period of acclimatization in the greenhouses. The aim of this study was to evaluate organic sources and water retention polymers used for pineapple cultivar seedlings during the acclimatization phase. The experimental design was randomized blocks in a 2...

Author(s): Vander Mendonça, Luciana Freitas de Medeiros Mendonça, Eduardo Castro Pereira, Grazianny Andrade Leite, José Maria da Costa and Francisco Mickael Câmara de Medeiros