July 2012
Susceptibility of Callosobruchus maculatus (Coleoptera: Bruchidae) to strains of Metarhizium anisopliae
The susceptibility of the bean beetle Callosobruchus maculatus to Metarhizium anisopliae var. anisopliae(URM3349) and Metarhizium anisopliae var. acridum (URM4412) strains was assessed at concentrations of 108, 107, 106, 105 and 104 conidia.ml-1 under laboratory conditions. The beetles were raised in glass recipients on a natural diet of cowpeas...
July 2012
Effect of planting pattern and drought stress on amylase content in rice grain
In order to determine the effects of planting pattern and drought stress on rice in Western Iran during 2005 to 2006, this research was performed. Experiment form was split plot in randomized complete block design with four replications. In this research, patterns of irrigation (I1, I2 and I3 = 10 cm water irrigation, five-dayalternate irrigation,...
July 2012
Phylogenetic and morphological evaluation of two species of Nostoc (Nostocales, Cyanobacteria) in certain physiological conditions
Studies of cyanobacterial species are important to the global scientific community, mainly, the order, Nostocales fixes atmospheric nitrogen, thus, contributing to the fertility of agricultural soils worldwide, while others behave as nuisance microorganisms in aquatic ecosystems due to their involvement in toxic bloom events. However, in spite of their ecological importance and environmental concerns, their...
July 2012
The Impact of contaminated fertilizer on pineapple growers in the Eastern Cape, South Africa
A framework has been established to determine the economic impact of contaminated fertilizer on pineapple growers in the Eastern Cape. Farmers in the region unwittingly made use of contaminated fertilizer which infected pineapples with higher than permissible levels of the heavy metal toxin, cadmium. The fruit was deemed unfit for use, translating into large financial losses for growers and influencing all...
July 2012
Choosing between agricultural development projects in the North West Province of South Africa: A multiple criteria analysis
In the light of past development failures, coupled with the pressure on government to deliver on their promises made towards agricultural development, a need was developed for a framework to assist government in choosing between agricultural development projects in the North West Province, consequently assisting government with their budget allocation towards agricultural development. Consequently, detailed...
July 2012
Application of NNARX to agriculture sector value added forecasting: A case of Iran’s agriculture sector
This study firstly uses the Cobb-Douglas production function and Auto-Regression Distributed Lag (ARDL) approach for estimating the long-run function of Iran's agriculture sector value added and then compares the forecasting performance of specified ARDL model with Neural Network Auto-Regressive model with eXogenous inputs (NNARX) using forecasting performance criteria (R2, MAD and RMSE). The results of...
July 2012
Factors affecting contribution to the improvement of pastures: A view of Iranian pasture owners
This paper aims to develop a model of sustainable partnerships for the improvement of pastures of Semnan Province in terms of preservation, restoration, operation and development. Path analysis results show that levels of governmental support have the most direct effect on the sustained participation of people in Semnan Province regarding the improved pastures perspective. This is followed by a number of...
July 2012
Forage yield and survival of native range species under supplementary irrigation in Central Saudi Arabia
The increase of livestock production in Saudi Arabia has resulted in a parallel increase in demand for forage production and hence greater exploitation of ground water for irrigation. The current trend of water conservation policies necessitates finding alternate sources of forages that consume less water than the traditional forage crops. The objective of this study was to evaluate the forage yield and...
July 2012
Chemical characterization to evaluate the agricultural potential use of organic wastes generated by industrial and urban activity
The use of organic waste as a source of plant nutrition and/or to minimize problems in agricultural soils is one possible use of these materials. The objective of this study was to evaluate the characteristics and some chemical properties of organic wastes from different processes and sources to know the potential for agricultural use and the risks associated with their use. Data were subjected to an analysis...
July 2012
Relationship between carbon and nitrogen in degraded alpine meadow soil
The distribution of soil organic carbon (SOC), labile organic carbon (LOC), and available nitrogen, as well as, the corresponding relationships between carbon and nitrogen were analyzed among meadows with varying degrees of degradation (normal, slight and severe) in Dangxiong, Tibet. The increasing severity of meadow degradation corresponded with decreasing soil organic carbon,...
July 2012
Allelopathic impact of rhizosphere soil of Tinospora cordifolia on growth and establishment of some weed plants
This experiment was carried out to study various biological and ecological features of Tinospora cordifoliaand physico-chemical characteristics of its rhizosphere soil, and determine the effect on the growth of some weed plants (that is, Chenopodium album L., Chenopodium murale L., Cassia tora L. and Cassia sopheraL.). Root length, shoot length and dry weight of...
July 2012
Calibration of a portable single nozzle rainfall simulator for soil erodibility study in hyrcanian forests
A portable rainfall simulator must be calibrated before its application in field experiments. In order to calibrate a portable single nozzle rainfall simulator for a soil erodibility study in Afra Chal site in northern forests of Iran, the following rainfall parameters were assessed; rainfall Intensity-Duration-Frequency (IDF), kinetic energy, drop size and coefficient of uniformity. The...
July 2012
Tiller morphogenesis and mortality were controlled by different loci in rice (Oryza sativa L.)
Productive panicles per plant in hybrids are less than that in pure line cultivars is the main reason why competition heterosis of grain yield is not conspicuous in japonica rice (Oryza sativa L.). In order to improve the trait of hybrids, we detected static loci and dynamic loci affecting tiller numbers by using unconditional and conditional quantitative trait loci (QTL) mapping methods in this study....
July 2012
Genetic control of flag leaf area in wheat (Triticum aestivum) crosses
Mixed inheritance analysis for flag leaf area (FLA) was carried out using joint segregation analysis of six basic generations (P1, P2, F1, F2, B1 and B2) in two wheat crosses in 2006 to 2007 and 2008 to 2009. The results indicated that the trait was mostly under control of one major gene in combination with polygenes (model D-2) for the two crosses during the first year. However, it was controlled by...
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