African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6848

Table of Content: 6 July, 2017; 12(27)

July 2017

Chlorophyll relative index for diagnosing nitrogen status in corn hybrids

The aim of the current study was to determine the chlorophyll relative index (CRI) in different leaves and phenological stages of the crop in order to diagnose the status of nitrogen (N) in corn (Zea mays L.) hybrids as a function of N rates applied in bands correlating them with N content in the leaves and crop productivity. The field experiment consisted of two corn hybrids (P30R50 and AG8025) and 6 N rates applied in...

Author(s): Mauricio Gruzska, Silvana Ohse and André Belmont Pereira

July 2017

Growth patterns and Fulton’s condition factor of the silver catfish Chrysichthys nigrodigitatus (Actinopterygii: Siluriformes: Claroteidae) from a sand-dragged man-made lake of Benin

Notwithstanding the nutritional, economic and fisheries importance of Chrysichthys nigrodigitatus, and its relatively high abundance and propagation in Lake Ahozon (South Benin), nothing is known about the well-being of the species in this water body. Thus, this study investigated length and weight frequency distributions, length-weight relationships and condition factors of C. nigrodigitatus. A total of 1020...

Author(s): Alphonse Adite, Houehanou Megnisse A. G. Gbaguidi and Moudachirou Ibikounle

July 2017

Effect of temperature on sweet potato virus disease symptom expression

The incidence and severity of sweetpotato virus disease (SPVD) was reported to be highly variable under different agroecological zones in Uganda, a situation that could be partly attributable to differences in temperature. This raised a need for understanding the effect of temperature on the biology of SPVD causative agents which ultimately influences disease development and symptom expression that undermines...

Author(s): Godfrey Sseremba, Settumba Mukasa and Samuel Kyamanywa

July 2017

Impacts of the exchange rate and world income on Brazilian agricultural exports

The main objective of this paper was to analyse to what extent the Brazilian agricultural exports responds to changes in the real exchange rate and in the world income for the 2000 to 2014 period (monthly). The results showed that the coefficient of the value of agricultural exports in relation to the exchange rate was inelastic in the long run (0.2540). However, the adjustment coefficient of the exported value in...

Author(s): Carlos Alberto Gonçalves da Silva, Léo da Rocha Ferreira  and Salatiel Turra

July 2017

Expediency of water and soil nutrients in irrigated and extreme drought conditions

Climate change has become global issue for crops due to increase in temperature and less rainfall resulting in shortage of water and decrease in yield. The experiment consisted of five guar (Cyamopsis tetragonoloba L.) genotypes viz. S-5744, S-5824, S-5785, BR-90, BR-99 were cultivated under irrigated and drought stress (only soaking dose) conditions using Randomized Complete Block Design (RCBD) with 3 replications. The...

Author(s): Muhammad Zubair, Lal Hussain Akhtar, Rashid Minhas,  Muhammad Javed Qamar, Shah Jahan Bukhari, Attiq Sadiq, Sabir Hussain, Ali Ammar and Muhammad Kashif Aziz