Abbreviation: Afr. J. Agric. Res.
Start Year: 2006
Page 1 of 274, showing 20 records out of 5465 total, starting on record 1, ending on 20
DOI: 10.5897/AJAR2017.12275[Article Number: 3A19AB564415]
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... Read more.
DOI: 10.5897/AJAR2016. 11654[Article Number: 30879AF64417]
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... Read more.
DOI: 10.5897/AJAR2016.11801[Article Number: 89683AE64419]
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... Read more.
DOI: 10.5897/AJAR2017.12208[Article Number: 99B3BA164421]
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... Read more.
DOI: 10.5897/AJAR2016.11684[Article Number: FE7EA5E64424]
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... Read more.
DOI: 10.5897/AJAR2016.12059[Article Number: 4B485F264426]
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... Read more.
DOI: 10.5897/AJAR2016.11550[Article Number: A73DE9164428]
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... Read more.
DOI: 10.5897/AJAR2016.11989[Article Number: 50A686964430]
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... Read more.
DOI: 10.5897/AJAR2016.11886[Article Number: F4CE27A64432]
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... Read more.
DOI: 10.5897/AJAR2016.11702[Article Number: 459FB6D64450]
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... Read more.
DOI: 10.5897/AJAR2016.11387[Article Number: E7A385364212]
Thiamethoxam is a neonicotinoid insecticide, which is believed to induce the expression of enzymes and proteins that activate plant defense mechanisms, thus improving the plant resistance to stress factors. The aim of this study was to evaluate the physiological performance of melon and watermelon seeds treated with thiamethoxam. The seed treatment consisted of five doses of thiamethoxam, 0, 2, 4, 6 and 8 mL per... Read more.
DOI: 10.5897/AJAR2016.11935[Article Number: 04788D864214]
Roots are essential to plants and can be the focus for yield improvement in the environment the plant grows. The objectives of this study were to evaluate some yield components and root traits in cowpea (Vigna unguiculata (L) Walp) and establish the linear association between the yield and root traits to explore improvement potentials of the crop in humid ecosystem. Ten cowpea accessions were tested in Calabar, Nigeria... Read more.
DOI: 10.5897/AJAR2016.11940[Article Number: 62419F164216]
The study was conducted in Wolayita zone of Southern, Nations, Nationalities and People Regional State with the objectives to explain its production systems, breeding practice with major constraints of sheep productivity. Purposive sampling techniques were employed to select target farmers. Structured questionnaire, focused group discussions, secondary data sources and field observations were used to generate the... Read more.
DOI: 10.5897/AJAR2016.11698[Article Number: D51170464218]
The detection of leaf area in plants is a very important parameter to evaluate growth rates. Nowadays, this analysis is performed manually through a process of counting, cutting and weighing leaf that involves long periods of time, providing subjective results and with low repeatability. The purpose of this research was to develop a computational tool (leaf detector box) to detect leaf area through image processing... Read more.
DOI: 10.5897/AJAR2015.10513[Article Number: 25E687C64222]
Field experiments were conducted to explore possibility of introducing Acorus calamus (Sweet flag) under rice ecosystem either as an Intercrop or main crop for optimizing maximum return. In the first experiment, Sweet flag was intercropped with two rice cultivars early IR-64 and late MTU-7029 “Swarna” in additive series where sweet flag was introduced between two normal rows of rice and in replacement... Read more.
DOI: 10.5897/AJAR2016.11705[Article Number: 8A6A0A664227]
A study was carried out to study the combining ability effects of diallel cross hybrids for grain yield, agronomic traits and reaction to grey leaf spot (GLS). Forty five experimental diallel cross hybrids made from ten quality protein maize (QPM) inbred lines with varying level of resistance to GLS were evaluated along with three checks at Bako and Jima Research Centers during 2014/2015 cropping season. Analysis of... Read more.
DOI: 10.5897/AJAR2016.11365[Article Number: 7560C6464230]
Cassava (Manihot esculanta. Cratz) is one of the most important food crops that constitute a considerable portion of the daily diet of the people and also serves as one of the major source of carbohydrate. Despite its importance, production of cassava in Ethiopia has different constraints and opportunities. Among which, shortage of improved varieties is the first and the most important one. It is mainly cultivated... Read more.
DOI: 10.5897/AJAR2017.12343[Article Number: 2506B4C64233]
Despite the fact that the economies of most countries in sub-Saharan Africa (SSA) are dominated by the agriculture sector, the productivity of the sector is still very low. One of the factors responsible for this is the fact that agriculture in SSA is mainly rain fed despite the abundant water resources in the region. Many attempts have been made in SSA to expand irrigation but most of these efforts have not been... Read more.
DOI: 10.5897/AJAR2016.12010[Article Number: E423CE264235]
The aim of this work was to evaluate the growth of sesame BRS 196 CNPA G4 in different irrigation depths (305, 436, 567 and 698 mm), applied on the basis of crop evapotranspiration– ETc (the depth of 567 mm was equal to 100% ETc). It was conducted at Embrapa Cotton, in Barbalha County, Ceará State, Brazil, 2012. The experiment was in randomized blocks, with treatments distributed in plots with three... Read more.
DOI: 10.5897/AJAR2016.11506[Article Number: 9A1B73F64243]
Climate change and variability poses the greatest challenges to agricultural production in the developing countries and especially drylands. Across Africa, yields of staple crops such as maize, wheat, sorghum and a variety of fruit crops have significantly decreased in the recent years, thus, widening food insecurity gaps. In the dryland areas of Kenya, the situation is further aggravated by low adaptive capacities and... Read more.
Page 1 of 274, showing 20 records out of 5465 total, starting on record 1, ending on 20