Sunflower has historically been an important crop in Central Queensland. In recent years the sunflower area in Central Queensland has been reduced due to low and variable prices and increased competition from alternate summer crops. Issues of tall persistent stubble that provides little ground cover and a lack of in-crop weed control options have also contributed to declining popularity of sunf...

internationally boarder and Manipur, Assam, and Tripura national boarder. The climate is mild and temperature ranges from 11 to 210 C in winter and 20 to 30oC in summer. Monsoon starts from June and lasts till the month of August. The average rainfall is around 2500mm. Major crops grown in the state are paddy, maize, mustard, sugarcane, sesame, fibber less ginger and potatoes. In the state ther...

>20 ppm during July and August, summer diurnal cycle amplitudes increased, synoptic variability correlations improved and the gradient across the mid-continent region increased. These effects combined to reduce the squared differences between the model and high-precision tower CO2 concentrations by 20%. Synoptic transport of the large-scale N–S gradient caused significant day-to-day variability...

In Western Australia large areas of lupins are grown, and the stubbles of these crops provide valuable summer grazing for sheep in the absence of lupinosis. Lupinosis is a mycotoxicosis resulting from the ingestion of phomopsins (Culvenor et al. 1977), toxins produced on lupin stubbles by the fungus Phomopsis leptostromiformis (van Wannelo et al. 1970). It is often a fatal disease, but apart fr...

Red-tailed black-cockatoos are specialist feeders, relying almost entirely on the seeds of brown and desert stringybark (Eucalyptus baxteri and E. arenacea) and buloke trees (Allocasuarina luehmannii). The cockatoos feed almost entirely on the stringybark species that has fruited most recently and there are marked periods of food shortage between new crops. For a period of 2-3 months in late su...

Rate and Method of Application Apply as a preplant broadcast treatment at least 14 to 21 days prior to planting. Late summer or early autumn is usually best for applying soil fumigants in Michigan. Inject 8 inches deep with chisels spaced 10 to 12 inches apart when soil temperature is between 50° and 80°F. Seal immediately after application. If soil is waterlogged or temperature is below 60°F, ...

Frankliniella spp. (Thysanoptera: Thripidae) thrips damage a variety of crops, feed on a broad range of hosts, and often migrate into cropping systems from adjacent vegetation. To determine potential sources of Frankliniella spp. thrips on crops, annual cycles of abundance of Frankliniella occidentalis (Pergande), Frankliniella fusca (Hinds), Frankliniella bispinosa (Morgan), and Frankliniella ...

The effects of transgenic compounds on non-target organisms remain poorly understood, especially in native insect species. Morphological changes (e.g., changes in body size and shape) may reflect possible responses to environmental stressors, like transgenic toxins. The dung beetle Canthon quinquemaculatus (Coleoptera: Scarabaeinae) is a non-target species found in transgenic crops. We evaluate...

In recent years, an intense debate about the environmental risks posed by neonicotinoids, a group of widely used, neurotoxic insecticides, has been joined. When these systemic compounds are applied to seeds, low concentrations are subsequently found in the nectar and pollen of the crop, which are then collected and consumed by bees. Here we demonstrate that the current focus on exposure to pest...

This study describes the parcel-based classification of agricultural crops using multi-date Landsat 7 ETM+ images acquired in May, July, and August 2000. The study area is located in North-West of Turkey with an area of about 170 km and grows a variety of crops. The objective was to map the summer (August) crops within the agricultural land parcels. The classification methodology is based on a ...