Conditions: Fields have been slow to dry. Only a small amount of manure has been applied. About 25% of the nitrogen/fertilizer has been applied to winter wheat and grassy forage stands. Alfalfa: Winter survival is very good (Figure 1), generally in the 90% range, except for areas along the St Lawrence (Morrisburg/Brockville), which have up to 80% […]
Conditions: More rainfall in region south and east of Ottawa over the April 12th weekend. Fields are generally saturated. Upper Ottawa Valley has drier conditions. Moisture from snow melt got away with very little ponding in most areas. Alfalfa: Winter survival looks good to date. Alfalfa has 2 to 3 inches of new growth at […]
co-authors: Dr. Clarence Swanton and Dr. Francois Tardif You may be faced with a scenario where there is an abundance of weeds at or near the maximum leaf-stage for effective control, yet the soybean crop is not at the growth stage specified on the product label. As a producer or consultant, do you focus on […]
Compiled by Chris Brown, edited by Horst Bohner 2012 Soybeans were originally introduced to Ontario as a forage crop for cattle. Today, the vast majority go for crush and the IP market. Letting the crop mature and harvesting the seed is far more profitable than using it as a forage crop but in some cases […]
In Ontario there are many root/stem diseases which cause wilting symptoms in soybeans. With the hot, dry conditions this year over much of the province some of these diseases such as stem canker, Fusarium wilt, charcoal rot have taken advantaged of the additional stress. Fusarium wilt or blight of soybeans can affect soybeans at any […]
Horst Bohner, Soybean Specialist, OMAFRA, Stratford Albert Tenuta, Field Crop Plant Pathologsit, OMAFRA, Ridgetown Prolonged dry conditions can reduce soybean yield at any stage of development, but plants are more susceptible during germination and the reproductive growth stages. Dry soil conditions during germination will reduce plant stands. Severe moisture stress is evident by leaf wilting […]
Septoria Brown Spot in Soybeans Septoria Brown spot is caused by the fungal pathogen Septoria glyines and under normal conditions, the disease does not cause major yield loss in Canada. Were yield losses have occurred in the past is when the soybean plants are under prolonged stress conditions. This can result in premature defoliation which […]
Sudden death syndrome (SDS) is most visible when the soybean crop enters the reproductive stages of development because most of the resources of the plant begin to shift from vegetative (leafs, stems, roots, etc) growth to producing and filling the pods. When this shift in resources occurs, the plant’s natural defense mechanisms are reduced (especially […]