Results 151 to 160 of about 49,056 (193)

Bioeconomic model of weeds in pastures

Agro-Ecosystems, 1979
Interactions between weeds, pastures and grazing animals are reviewed. It is argued that the economic interpretation of effects of weeds should be based on a farm unit. The weed, Silybum marianum, is examined in relation to a specific farming system. Within a wholefarm framework, two of its effects, competition and reduction of accessibility of pasture,
B.A Auld, K.M Menz, R.W Medd
openaire   +2 more sources

Toxic Pastures, Weeds and Chemicals

American Association of Bovine Practitioners Conference Proceedings, 1971
I am going to hit some things that are of interest to me and some of them may be of use to you; some may seem a little bit provincial. The first consideration about poisonings is the possibility of one being present. In acute poisoning, whether it is plant or chemical, the first tip-off, of course, is single or multiple death and illnesses that ...
openaire   +1 more source

Canopy and Chemistry of Pasture Weeds

Weed Science, 1980
Morphological and chemical characteristics of 11 warm season pasture weed species were defined. Goldenrod (Solidago altissima L.) was significantly taller and common ragweed (Ambrosia artemisiifolia L.) had the largest canopy diameter of the 11 species studied. Species ranged from 14 to 134 cm in height with canopy diameters of 25 to 70 cm.
R. J. Carlisle, V. H. Watson, A. W. Cole
openaire   +1 more source

Weed Management in Crop-Pasture Rotations

1989
On wheat-sheep farms in the south-west of Western Australia, pasture production in winter is a major limiting factor for the sheep enterprise. This paper describes an economic evaluation of reducing herbicide usage in crops below recommended levels to increase subsequent pasture production in pasture-crop rotations.
Ghadim, Amir K. Abadi, Pannell, David J.
openaire   +3 more sources

Pasture weeds of New Zealand

1982
Pasture weeds are present due to many interrelated factors, not the least important being species introduction, level of pasture development, biotic factors, climate, managerial practices and control pressures. The study of pasture weeds in New Zealand presents a unique opportunity due to its geographical isolation, its late settlement by Europeans ...
openaire   +1 more source

Home - About - Disclaimer - Privacy