April 2013
Effects of simulated acid rain on Shorea macroptera growth and selected soil chemical properties
There is dearth of information on the effect of acid deposition on Shorea macroptera in Malaysia. Thus, this study was conducted to investigate the potential effect of simulated acid rain (SAR) on S. macroptera growth and selected soil chemical properties. Six treatments were evaluated in this study. Growth variables of S. macroptera were observed for 90 days. After 90 days, seedlings and...
April 2013
Evaluation of potential indicators for payment of environmental services on the impact of rehabilitation of degraded rangeland sites
An understanding of the response of indicators of rangeland degradation following rehabilitation is essential to the successful implementation of the Payment for Environmental Services initiative that is currently being developed in the communal rangelands of the Drakensberg mountains of South Africa. We evaluated the following four potential indicators of rangeland degradation: Range condition, basal cover, species...
April 2013
Laboratory studies on ovipositional preference of the peach fruit fly Bactrocera zonata (Saunders) (Diptera: Tephiritidae) for different host fruits
The peach fruit fly Bactrocera zonata (Saunders) is a serious pest of different fruits and vegetables in Pakistan inflicting economical damages. A laboratory experiment was conducted to determine the oviposition preference of the peach fruit fly for different fruits including guava, banana, citrus, ber, chikoo and apple under free or no choice conditions. Results showed that the guava was the most preferred...
April 2013
Effect of root restriction on vegetative growth and leaf anatomy of ‘Kyoho’ grapevines cultivar
The effects of root restriction on leaf and shoot growth and leaf anatomy of grape were investigated. Root restriction delayed leaf appearance, decreased leaf growth and reduced the rate of leaf expansion during all stage of berry development. Shoot growth of root-restricted vines was also reduced, with the length and thickness of shoots being lower than those of the control. Root restriction also induced adaptive...
April 2013
Intraspecies variation in nutritive potentials of eggs from two ectotypes of giant African land snail (Archachatina marginata var. saturalis) in Calabar, Nigeria
This pilot study provides information on the nutritive potentials of eggs laid by two ectotypes of Archachatina marginata var. saturalis (P) snails. One hundred (100) adult A. marginata snails, 50 each of the black-skinned ectotype and white-skinned ectotype used for the study were selected from the snail sanctuary of the Department of Animal Science, University of Calabar, Nigeria. The...
April 2013
Assessment of producing quality sprouting broccoli (Brassica oleracea var. italica) under cover and open condition
The present study evaluates Poly House and Open field production of quality Sprouting broccoli. Sprouting broccoli is an exotic vegetable which is gaining popularity among Indian growers due to its high nutritive value and market potential in the recent years. Experiment was conducted to determine the growth, yield and quality of sprouting broccoli under polyhouse and open field condition at Horticultural...
April 2013
Generation mean analysis and heritability of drought resistance in common bean (Phaseolus vulgaris L.)
Information on the availability of genetic variability and mode of gene action are critically important for choosing effective breeding methods that result in appreciable improvement in performance under drought stress. The objectives of this study were to estimate the gene action for drought resistance of quantitative traits and also to estimate the components of variance and heritability of drought resistance in...
April 2013
Effect of ultra-violet rays on growth and development of rust red flour beetle, Tribolium castaneum (Herbst)
The adults of Tribolium castaneum were exposed to ultraviolet (UV) light (254 nm) for different time periods (2, 4, 6, 8, 10, 12, 14, and 16 min) and each replicated thrice. The culture of unexposed beetles was maintained for comparison. The different time period levels were maintained in the laminar flow cabinet using ultra-violet radiations (254 nm). The fecundity (113.00 eggs/female), hatchability (55.33%),...
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