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: 12 January, 2017; 12(2)

January 2017

Plant secondary metabolites and its dynamical systems of induction in response to environmental factors: A review

Under natural conditions, the plants are, usually, surrounded by a series of potential enemies. They had created strategies of defense against pathogens and herbivores' attacks, allowing its perpetuation throughout evolution. These defense mechanisms are closely associated with the synthesis of secondary metabolites, which are also worldwide used in several areas of industry. This bibliographic review was conducted...

Author(s): Tiago Olivoto, Maicon Nardino, Ivan Ricardo Carvalho, Diego Nicolau Follmann, Vinícius Jardel Szareski, Mauricio Ferrari, Alan Junior de Pelegrin and Velci Queiróz de Souza

January 2017

The utilization of tropical legumes to provide nitrogen to pastures: A review

Sustainable models of animal production constantly seek for ways to pasture production with inputs reduction. In this context, the introduction of forage legumes in the pasture system is fundamental to fix nitrogen from the atmosphere and supply it to grasses, increasing its production and persistence, enhancing animal nutrition as it grazes, at the same time. Still, the use of plant mixes in the system brings further...

Author(s): Flávia Maria de Andrade Gimenes, Henrique Zavarez Barbosa, Luciana Gerdes, Alessandra Aparecida Giacomini, Karina Batista, Waldssimiler Teixeira de Mattos, Linda Mônica Premazzi and Alberto Nagib de Vasconcellos Miguel

January 2017

Optimal sample size and data arrangement method in estimating correlation matrices with lesser collinearity: A statistical focus in maize breeding

Information about data arrangement methodologies and optimal sample size in estimating the Pearson correlation coefficient (r) among maize traits are still limited. Furthermore, some data arrangement methodologies currently used may be increasing multicollinearity in multiple regression analysis. This study aimed to investigate the statistical behavior of the r and the multicollinearity of correlation matrices among...

Author(s): Tiago Olivoto, Maicon Nardino, Ivan Ricardo Carvalho, Diego Nicolau Follmann, Mauricio Ferrari, Alan Junior de Pelegrin, Vinicius Jardel Szareski, Antônio Costa de Oliveira, Braulio Otomar Caron and Velci Queiróz de Souza

January 2017

Mineral and organic fertilizer in two Physalis species

Physalis cultivation can be an alternative of extra income for small and medium producers, mainly with the use of materials available on the property that can replace chemical fertilizer. This study aimed to evaluate agronomic parameters of Physalis peruviana and P. pubescens submitted two different sources of fertilization - chemical and organic. We evaluated plant height, shoot dry mass, production/plant, fruits...

Author(s): ARIATI Ana Claudia, OLIVEIRA Marisa de Cacia, LOSS Edenes Maria Schroll, GOMES Izabela, PACHECO Vacilania and NEGRI Rafaele Cristina

January 2017

Variation of leaf area index of the forage sorghum under different irrigation depths in dynamic of cuts

The determination of leaf area index is a variable of great importance for predicting productivity, especially when it comes to forage species where the desired product is the leaves. This study aimed to determine the variation of the leaf area index of forage sorghum when subjected to different irrigation depths in four culture cuts. Treatments consisted of six irrigation depths, these being 0, 60, 80, 100, 120 and...

Author(s): Jardel Henrique Kirchner, Adroaldo Dias Robaina, Marcia Xavier Peiter, Wellington Mezzomo, Rogério Ricalde Torres, Leonita Beatriz Girardi, Bruna Dalcin Pimenta, Ricardo Benetti Rosso, Anderson Crestani Pereira and Marcos Vinícius Loregian

January 2017

Mathematical models to estimate leaf area of citrus genotypes

Mathematical models were developed, using 22 different genotypes of citrus, to estimate leaf area. The information of the relationship between leaf length and width (L/W)2 for simple leaf blade form (eliptic, ovate, obovate, lanceolate); and length of the three folioles (L2+L3)/L1 for a compound leaf (trifoliate leaves), was used with the purpose to separate group of similarities of leaf blade form and promote...

Author(s): Alexandre Dias Dutra, Maurício Antonio Coelho Filho, Amábili Gunes Viana Pissinato, Abelmon da Silva Gesteira, Walter dos Santos Soares Filho and Marilene Fancelli