|
|
|
|
|
| Cirujeda, A.; Melander, B.; Rasmussen, K.; Rasmussen, I.A.. |
| Field trials were made at a single Danish and two Spanish locations. In Denmark winter wheat was sown at 24 cm spacing allowing hoeing in the inter-row area. Hoeing speeds of 2, 5 and 8 km h-1 were tested at the end of tillering, at the beginning of stem elongation and at both times. The crop was harrowed immediately afterwards at the same speed. In the Spanish locations the winter barley was sown at a spacing of 12 cm and harrowed only at either pre-emergence plus post-emergence or once post-emergence at mid-tillering at 2, 4, 6 and 8 km h-1. The depth of the soil layer thrown into the cereal row was measured. This layer ranged between 0.4 cm and 1.4 cm depending on the site and on the treatment, but was generally higher with a single treatment at all... |
| Tipo: Journal paper |
Palavras-chave: Weed management Cereals; Pulses and oilseeds. |
| Ano: 2003 |
URL: http://orgprints.org/1521/1/WR_Cirujedaetal.pdf |
| |
|
|
| Rasmussen, I.A.; Holst, N.; Pedersen, L.; Rasmussen, K.. |
| A model is being developed which describes the population dynamics of annual weeds and how it is affected by crop rotation, cultivation practices and weed control. The model aims to predict the development of a certain weed species in order to plan crop rotation and cultivation practices to minimize the risk of proliferation. The model does not predict the exact number of weeds expected to be found in a certain year or crop, but rather the general development over a number of years. The model includes documented knowledge, as well as informal expert knowledge, on seed survival in the soil, seed placement in soil after tillage, seed germination with respect to placement in soil, time of year and tillage, weed development in response to crop competitiveness... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems; Weed management. |
| Ano: 2002 |
URL: http://orgprints.org/1506/1/EWRS_pcwc02_Rasmussen_IA.pdf |
| |
|
|
| Rasmussen, K.. |
| Injection of liquid manure (slurry)into the soil is an alternative to the traditional surface application. By the injection method,it is possible to place nutrients closer to the crop sown, thus offering the crop a competitive advantage over weeds. This study compares the response in crop yield, weed density and weed biomass to injection vs. surface application of liquid manure through three growing seasons in barley and oats. The manure applications were combined with treatments of weed harrowing or herbicide spraying or no treatment at all. The levels of weed control and crop yield obtained by harrowing and herbicides were larger when slurry was injected compared with surface application. Without any weed control treatments,the injection method... |
| Tipo: Journal paper |
Palavras-chave: Composting and manuring; Weed management. |
| Ano: 2002 |
URL: http://orgprints.org/1784/1/Influence_of_liquid_manure.pdf |
| |
|
|
|
