Science Into Practice - Parasitoid mix pitted against herb aphids
22 Jul 2011 | by HDC
Hawthorn-parsley aphid is a common and severe pest of year-round parsley, forming dense colonies at the base of stems, making it extremely difficult to control.
Certain fungi that normally live in close proximity to plant roots are able to assist them to take up nutrients thus enhancing plant growth. These "mycorrhizal fungi" can benefit ericaceous plants in particular. The fine roots found in the sandy soils of pine forests having an understory of ericaceous...
Hawthorn-parsley aphid is a common and severe pest of year-round parsley, forming dense colonies at the base of stems, making it extremely difficult to control.
Growers try to use water efficiently and to minimise the run-off of water and fertilisers. For these reasons, "ebb and flow" floors are attractive because they lose water only by evaporation.
Chlorine dioxide is a biocide (disinfectant) used in the food, water and other industries. Research in the USA has found that it demonstrates good biocidal activity, which is important in the fight against plant pathogens.
The rate of development of many plants is related to the average 24-hour temperature. Hence, it is feasible to produce a crop in the same time but with a lower energy cost by lowering temperatures at night, when energy consumption is high, and then raising temperatures by day to compensate.
Soil-borne Phytophthora rubi can infect raspberry and cause wilting, leading to plant death. Fruit yields are lost for the remainder of the crop's life because the soil contamination means that replacement plants are likely to succumb to infection.
With hydroponically-grown crops, it is desirable to recirculate at least a proportion of the nutrient solution and the reasons for doing this are as much financial as environmental.
Downy mildew has become an increasing problem on a range of outdoor-grown herbs, but especially on sage, mint and parsley.
Researchers continue to develop sophisticated models of crop responses that are intended to allow growers to predict the effect of any combination of light, temperature, and daylength. The experiments reported here investigated the effects of average daily temperature and light integral on flowering...
After scab and canker, powdery mildew is the most significant disease on apple in the UK.
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