The western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), is a major pest of corn (Zea mays L.) in North America and has evolved resistance to crop rotation by ovipositing in alternate crops such as soybeans [Glycine max (L.) Merr.]. Through experiments with plants grown in the greenhouse and the field, we tested whether soybeans with resistance to the soybe...

one of the crucial issues before the second cropping is having enough knowledge about the residue effect of first crop herbicides on second crops. this experiment was conducted to investigate the possible inhibitory effect of some selective paddy herbicides residues to second cropping. experimental factors were included common paddy herbicides (thiobencarb, butachlor, oxadiargyl, bensulfuronmet...

Rust fungi (Basidiomycetes of the order Uredinales) are obligate biotrophs that grow and reproduce only in living plant tissue. There are on the order of 5000 or more species of rust fungi that collectively cause disease on most crops, ornamentals, and many other plants. For example, rusts caused by Puccinia species are some of the most important diseases of wheat and other small grain crops wo...

INTRODUCTION Microalgae comprise a vast group of photosynthetic, auto/heterotrophic organism which has an extraordinary potential for cultivation as energy crops. These microscopic algae use photosynthetic process similar to that of higher-developed plants. They are veritable miniature biochemical factories, capable of regulating carbon dioxide (CO ), just like terrestrial plants [1]. In additi...

The Eurasian region is a massive land continuum where trading, migration, and conquest have occurred since antiquity. Of the eight Vavilovian Centers of Origin of cultivated plants, five derive from isolated regions in the Eurasian continuum; the sixth is from Abyssinia, and the remaining two from the Americas. The Old World crops were largely known within the region at the dawn of the Modern A...

in order to evaluate cardinal temperatures and optimum thermal range of germination of three medicinal plants including ajowan, fennel and dill an experiment was conducted in a completely randomized design with three replications. temperatures considered for this study were: 5, 10, 15, 20, 25, 30 and 35 ?c. results indicated that temperature affected germination rate and percentage of these cro...

What is a GMO? A genetically modified organism, or GMO is the term commonly used for crops that have been genetically engineered (GE) to produce some desired trait. The first GE crops were tobacco plants modified in 1986 to be resistant to direct application of herbicides. The following year, tobacco plants were engineered to resist insects. There followed a host of field trials to also develop...

Agriculturally grown plants are potentially contaminated with poisonous weeds. Many potentially toxic plants are found in pastures and crops. Consequently, forage crops at harvest or when directly grazed may contain toxic amounts of poisonous plants. Unfortunately, efficient prevention of contamination with certain poisonous plants is not always feasible or practical, and thus, contaminated fee...