As with site effects, year effects are likely to be a complex array of interacting differences, including differences in rainfall, temperatures, weed challenges and herbivores. Our watering partly offsets the difference between the long-term mean and the rainfall lost during the fall drought of 2011/12, and the result was a priority effect much more similar…
Postemergence herbicides are applied to small germinated seedlings or young plants
It is possible that this nonnative species may eventually become a problematic weed in these more-open wetland areas.The challenge in controlling stinkwort is applying the appropriate management at the proper time. Although traditional methods of control, including mechanical and chemical techniques, can be effective, determining the most appropriate timing has been difficult. If management actions…
There was a decrease in tiller number after the pendimethalin alone treatments
Two experimental runs were carried out, seeded on April 1, 2022 and May 5, 2022. Pendimethalin applications were made at the four-leaf stage rice on April 21, 2022 and May 18, 2022. At this stage, rice could tolerate the pendimethalin application as observed in preliminary field and greenhouse studies. Before the application, pots were maintained…
The site of herbicide uptake can differ among plant species in roots and shoots
A major characteristic with dinitroanilines is volatility, with trifluralin being the most volatile because of the addition of the trifluoromethyl groups . Pendimethalin is classified as moderately volatile with a vapor pressure of 1.25 10-3 Pa . Therefore, incorporation in soil after an application is encouraged either by rainfall, irrigation or mechanical incorporation to reduce…
Parasitization was higher early in the season compared to later in the season
Total insect population densities in 2007 varied among the sampling weeks , but not the cropping treatments . The total insect population in all treatments started with low density and then developed early and late season peaks. Although differences were not statistically significant, the total insect populations reached higher levels on the cover crop treatments…
The grassy weed species Echinochloa crus-galli and Eragrostis barrelieri occurred very sporadically
The AI-based method is much more cost-effective than the car survey and human-based GSV surveys for largescale species surveys. Because of the strong effects of climate changes, species’ habitats and favorable environmental conditions can change rapidly, and the changing climate may accelerate invasive species spread . Based on the AI-based species mapping method and the…
UC also created programs focused on small farms
A detection by the camera triggers an arm that pushes the crop leaves out of reach of the harvester’s blades, keeping the contaminant from being harvested and fed into the processing line. The growers who partnered with Harvest Moon on the project funded the prototypes and testing, and now will be the first to use…
Summer weed cover was affected by cover crop treatment in the intensification experiment
Based on the planting date experiment, early cover planting results in a consistently more abundant cover crop. Winter rainfall is increasingly variable in California, and the late planting date subjects the cover crop to additional uncertainty in rain timing and quantity. This issue was evident in 2020, where the late cover crop planting had to…
Weed suppression is one key indicator that could describe the biotic function of an orchard cover crop
Plants had 5-10 cm new vegetative growth several weeks after transplanting, and treatments were applied May 20, 2021 and June 22, 2021 in the first and second replicates, respectively. Non-treated plants were left undisturbed, clipped plants had all above ground tissues removed, and tilled plants had the top 10 cm of soil in each pot…
The presence of the virus in crops is often attributable to a nearby johnsongrass infestation
These conditions are representative of extreme climatic events that are predicted to become more common and are expected to have different outcomes on plant community function and productivity than more gradual climatic change , such as increasing invasion by lowering a community’s biotic resistance . This long-term field experiment provides important insights into the strength and…