Timely and appropriate flower and fruit thinning is a crucial practice to manage grape size, improve quality, and ensure high yields. The process involves several key steps:
First, it's important to remove all inflorescences on the fruiting branches when the plant is overloaded with flowers. This includes discarding weak or poorly developed inflorescences, as well as those that are too dense or improperly positioned. By doing so, the plant can concentrate its nutrients on the remaining, healthier inflorescences. A commonly used guideline is the "strong 2, weak 1" principle—strong fruiting branches can retain two spikes, medium ones one, and weak branches should avoid retaining any. Removing excess inflorescences should be done from before flowering until the bloom stage to optimize results.
Second, after shaping the axillary spikes and inflorescences, which can contain between 300 to 1500 flowers, many of these will naturally drop during the fruit-setting period. To enhance fruit development, it's recommended to remove some of the remaining inflorescences and part of the flower buds. Instead of removing individual flowers, it's more effective to prune the rachis branches (spiklets) at each level of the inflorescence. Shaping should be done just before flowering—too early may prevent proper inflorescence development, while too late reduces effectiveness. The ideal length for the axillary spike is about 1/4 to 1/5 of the main inflorescence. This not only helps reduce the number of flowers but also lowers the risk of soft tip or water-jar disease.
Finally, after thinning through axillary spikes and inflorescence shaping, the number of grapes per cluster is typically reduced. However, sometimes additional thinning is necessary to achieve uniform and larger berries. After fruit thinning, the weight of each grape should be maintained between 10 to 20 grams, and the total weight per cluster around 500 to 600 grams. It's best to perform the first thinning when the fruit reaches mung bean size, and then again after fruit set, when the berries are about the size of soybeans. Combining this with previous pruning steps ensures the best outcome for both yield and quality.
2004-2021 New Laser Distance Sensor
Are you looking for a distance photoelectric sensor with mm high accuracy? Yes, JRT manufactured the industrial laser lidar sensor since 2004. There are different models of high accuracy sensor, high frequency distance sensors, ip54 ip65 ip67 waterproof rating etc., you can choose. The laser measuring modules, some good for outdoor using, some can be connected to your Arduino,
Also, Analog Output, RS485, USB cable is optional. If you have any other requirements of our accuracy distance sensor, please fell free to contact us
Chengdu JRT Main Ranging Modules: Industrial Laser Distance Sensors, Laser Rangefinder Sensor , Tof LiDAR Sensors.
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Chengdu JRT Meter Technology Co., Ltd , https://www.jrt-measure.com