estimation of weed damage threshold is essensial in site-specific weed control programs. this experiment was conducted to determine the spatial distribution of weeds damage threshold in two wheat feilds. data related to weed biomass and crop yield were collected from sampling at 120 and 135 points of the first and second fields respectively based on a 4×4 m grid at research field of agricultura...

Weed suppression is one of the several benefits achieved by soil incorporation of crop residues and such suppression is believed to be allelopathic in nature. The allelopathic potential of different crop residues: viz. sorghum (Sorghum bicolor [L.] Moench), sunflower (Helianthus annuus L.), brassica (Brassica campestris L.) was evaluated in rice (Oryza sativa L.) and jungle rice (Echinochloa co...

This study examined the ability of pole-bound hawk-kites to protect maturing fields of corn from blackbird damage. Hawk-kites were placed over half of each experimental field. Damage on the hawk-kite side was slightly, but not significantly, less than on the unprotected side as measured by the percent of ears damaged by birds, total amount of grain lost to birds, or percent of crop damaged by b...

White-tailed deer (Odocoileus virginianus) may cause more damage than any other species of wildlife. These damages include crop loss, automobile and aviation collisions, disease transmission, environmental degradation, and destruction of ornamental plantings. One practical method of controlling deer damage is the use of exclusionary fences. The relatively high cost of labor and materials requir...

Perimeter trap cropping (PTC) is a method of integrated pest management (IPM) in which the main crop is surrounded with a perimeter trap crop that is more attractive to pests. Blue Hubbard (Cucurbita maxima Duch.) is a highly effective trap crop for butternut squash (C. moschata Duch. ex Poir) attacked by striped cucumber beetles (Acalymma vittatum Fabricius), but its limited marketability may ...

Slugs are major pests of oilseed rape that are poorly controlled by conventional bait pellets. A series of laboratory experiments investigated the potential of seed-dressings to control slug damage in this crop. Four compounds: metaldehyde, methiocarb, cinnamamide and 3,5-dimethoxycinnamic acid (DMCA) were tested at a range of doses for phytotoxicity and ability to reduce damage by Deroceras re...

Sunflower (Helianthus annuus) growers in North Dakota and South Dakota harvested 593,522 ha in 2012, valued at $US600 million. Blackbirds, numbering about 75 million, annually damage 2 to 3% of the crop. Damage tends to be clumped around cattail (Typha spp.) dominated wetlands with standing water. In an attempt to reduce sunflower damage, three general population management strategies have been...

the yield loss simulation (yls) and the macros liq.csm models were used to simulate the effect of stem borer damage at a detillering rate of 5, 15, 30, 60% at vegetative, panicle initiation and grain filing stages, on yield of rice cultivar?s ratna. this stem borer damage during vegetative and panicle initiation stages was not simulated appropriately by both the models. relatively macros simula...

Benefits and costs of an integrated management system coordinated at the community level to reduce rodent damage to lowland irrigated rice were measured in West Java, Indonesia, from 1999 to 2002. Four villages, each of 120 ha (70–80 families per village), were involved in the study, two being allocated as treatments and two as controls following a randomised block design. The emphasis was on i...