August 2015
Land use and soil type influence on soil quality: A comparison between tree and arable crops in basement complex soils
Land degradation has become a great concern for sustainable land management. There is therefore the need to monitor land use impact on the soil to prevent degradation. This study was set up to assess soil quality under tree and arable uses and their impacts on the soils capacity. Four farmlands (cocoa, cashew, cassava and maize) on three soil types (Apomu, Ibadan and Iwo series) were selected within Aiyedire local...
August 2015
Spatial variability of available nutrients in soils of Nainpur tehsil of Mandla district of Madhya Pradesh, India using Geo-statistical approach
Scientific information concerning spatial variability and distribution of soil properties is critical for farmers attempting to increase fertilization efficiency and crop productivity; fertilization based on maps with recommendations related to soil fertility may lead to reduced fertilizer inputs without reducing yield. In the present study, GPS based one hundred fifty surface soil samples (0-15 cm) were collected from...
August 2015
Adoption and impact of early maturing maize varieties on farmers income in Safana Local Government Area of Katsina, Nigeria
This paper examined the adoption and impact of early maturing maize varieties on farmers’ income in Safana Local Government Area of Katsina State, Nigeria. Using random sampling techniques, 300 maize farmers were selected across 10 communities in the Local Government. Data obtained were analyzed using descriptive statistics, adoption index, double difference method and Z-statistics to estimate impact of early...
August 2015
Analysis of leaf area in black wattle throughout its plantation cycle
Leaf area is one of the most important biophysical characteristics of a plant, as it determines how much photosynthetic radiation is intercepted so that the photosynthesis can occur. The presented research aim was to generate numerical indicators of leaf area and to study the behavior of black wattle (Acacia mearnsii De Wild.) throughout a plantation cycle (7 years), relating them with environmental variables. The study...
August 2015
Cropping systems evaluation, fertilization, and effects on technological quality and sugarcane productivity
The scarification has been used in soil descompaction and when combined with fertilizer and harrowing has been called triple operation, which together can change the quality and increase the productivity of sugarcane. In this study we evaluated the influence two cropping systems in ratoon, associated with different forms of fertilization on the technological quality and productivity of sugarcane. The design was...
August 2015
Competition and supplier loyalty: Lessons from the Brazilian tobacco industry
This paper aims to identify both the level and the reasons of the decreasing loyalty in the transactions between tobacco growers and tobacco processors in Brazil. The theoretical approach relies on Transaction Cost Economics. Semi-structured interviews were held with growers and companies’ directors, and a structured questionnaire was used to obtain data from a sample of 381 tobacco growers in Brazil. Indicators...
August 2015
Phytosociology and interference of weeds in upland rice in Maranhão State, northeastern Brazil
The objective of this research was to identify the weed species and to determine the critical periods of weed interference in upland rice in Maranhão State, northeastern Brazil. The experiment was laid out in a randomized complete block design with 16 treatments and four replications in two growing seasons. Treatments were increasing periods of control and coexistence of the crop with weeds, for every 10 days....
August 2015
Characterization of cattle husbandry practices in Essera Woreda, Dawuro Zone, Southern Ethiopia
This study was conducted in Essera Woreda, Dawuro Zone of South Nations Nationalities and People Region with the objectives of characterizing cattle husbandry practices as well as identifying and prioritizing cattle production constraints of the study area. Ninety households (HHs) owning cattle were selected randomly. A semi-structured questionnaire was prepared and used to collect data on cattle production system,...
August 2015
Phosphorus release from poultry litter to the soil due to the management
The study aimed to evaluate phosphorus release (P) from poultry litter (composted and uncomposted poultry litter) to the soil under different pH and depth conditions of application in typical Red Distroferric Oxisolin the city of Toledo, western Paraná state. The experiment was conducted under field conditions, in a randomized block design with treatments arranged in a 2x2x3 factorial scheme, consisting of two...
August 2015
Agronomic performance of RR® soybean cultivars using different pre-sowing desiccation periods and distinct post-emergence herbicides
The current study aims to measure the effect of pre-sowing desiccation period and verify the influence of post-emergence herbicide on soybean agronomic traits and grain yield. The experiments were carried out according to a randomized complete block design with three replications during two crop seasons (2012/13 and 2013/14), using split plot design. Five soybean cultivars were used (BRS Favorita RR®, TMG 1179...
August 2015
Greenhouse evapotranspiration and crop factor of Amaranthus cruentus grown in weighing lysimeters
Actual evapotranspiration and crop coefficient (Kc) of Amaranthus cruentus grown in weighing lysimeter was determined under a screen house. The weighing lysimeter was made of a cylindrical plastic of circular cross-sectional area of 0.076 m2 and diameter 0.3 m. Climatic variables such as solar radiation, relative humidity, air temperature and wind speed were collected for the estimation of reference evapotranspiration...
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