QC Purchasing Service For Ingredients
Sourcing services are a type of business activity in which one company (usually a supply chain management company or professional purchasing agent) accepts a commission from another company or individual to carry out purchasing activities on their behalf. This service mainly includes the following aspects: all in one place,Nutrition Testing,test service,one-stop purchasing service,lab technology Xi'an Day Natural Inc. , https://herb.dayqc.com
what is QC Purchasing Service For Ingredients?
1. Demand analysis: understand the specific needs of customers, including the specifications, quality requirements, quantity and delivery time of the required goods or services.
2. Supplier screening: Finding and screening suitable suppliers according to customer needs, which may involve market research, price comparison, supplier evaluation, etc.
3. Negotiation and contract signing: negotiated prices, delivery terms, payment methods and other aspects with suppliers on behalf of customers, and assisted in signing procurement contracts.
4. Order processing: Place the purchase order to the supplier, track the execution of the order, and ensure that the goods are delivered in accordance with the agreed time, quality and quantity.
5. Quality control: Conduct quality inspection or supervise the supplier's quality control process when necessary to ensure that the purchased goods or services meet the customer's quality requirements.
6. Logistics and distribution: arrange the transportation and distribution of goods, coordinate warehouse management, and ensure that goods can be delivered on time and safely to the customer's designated location.
7. Financial settlement: Handling financial matters related to procurement, including paying suppliers, processing invoices, making foreign exchange (if international trade is involved), etc.
8. Risk management: identify and manage risks in the procurement process, such as supply disruption, price fluctuations, quality disputes, etc., and take measures to reduce the impact of these risks on customers.
Through the agent procurement service, customers can save time and resources, use the procurement experience and network of professional companies to obtain better prices and conditions, while reducing their own procurement risks. This service is particularly useful for companies and individuals who do not have a dedicated procurement department or who want to focus on their core business and outsource non-core activities.
Rice black sorghum
Scotinophara lurida (Burmeister), commonly known as the rice stink bug, is a species of true bug belonging to the family Aphididae. It is primarily found in southern Hebei, Shandong, and northern Jiangsu provinces, as well as regions south of the Yangtze River. This pest mainly infests rice crops but can also damage wheat, millet, corn, sugarcane, beans, potatoes, and citrus plants.
The injury caused by this pest is characterized by nymphs feeding on the stems, leaves, and panicles of rice plants, sucking out the sap. This feeding results in yellow spots on the affected areas, which can lead to stunted growth and even complete withering of the plant in severe cases. Over recent years, changes in agricultural ecosystems and crop patterns have contributed to a steady increase in the population of this pest, making it a growing concern for farmers.
Morphologically, adult S. lurida measures 8.5–10 mm in length and 4.5–5 mm in width, with a long oval shape and a dark brown to black coloration. The head is slightly narrower than the thorax, and the compound eyes are prominent. The front corner of the thoracic shield extends laterally, while the scutellum is small and slightly concave or truncated at the end. Eggs are nearly barrel-shaped, reddish-brown, measuring approximately 0.9 × 0.8 mm, and feature around 40–50 small holes along the edge. The eggshell has a reticulated pattern with fine engraved dots and a white powdery coating.
The first instar nymph has a brown head and belly, with red markings on the dorsal surface and red spots on the ventral side, reaching a body length of about 1.3 mm. The third instar nymph is dark brown to grayish brown, with a small reddish-brown spot on the abdomen and slightly visible wing buds, measuring 3.3 mm in length. The fifth instar nymph has a light black head and thorax, a slightly green abdomen, and clearly visible hind wing buds, with a body length of 7.5–8.5 mm.
In terms of life habits, S. lurida typically has one generation per year in Jiangsu and Zhejiang, two generations in Jiangxi, and two to three generations in Guangdong. Adults and some older nymphs overwinter in soil cracks, under stones, or in the rhizosphere of weeds, as well as between rice stalks and bark crevices. In early summer, they attack rice fields, with nymphs hiding in sunny areas near the base of rice plants during the day and feeding on leaves or panicles in the evening or on cloudy days. Eggs are laid on the leaf sheaths 6–9 cm above the water surface, often in groups of more than 14 eggs arranged in two rows. Each female lays around 75 eggs. Fields with early planting and lush vegetation tend to suffer more damage, especially in hilly areas. Natural enemies include rice blast black bees, Beauveria bassiana, birds, spiders, and frogs.
For control, one effective method involves using spores to soak adult bugs and eggs that are laying eggs near the water surface. Soaking the spores in water for 24 hours can prevent them from hatching. During the egg-laying period, proper drainage should be maintained, and the area where eggs are laid should be reduced by keeping the water level at 10–13 cm. Spores should be soaked and applied every 3–4 days for 4–5 consecutive times to kill a large number of egg masses. Another approach is to spray insecticides such as 2.5% emulsifiable concentrate at 1500 times dilution, 20% fenvalerate at 2000 times, or 19% trichlorfon at 800 times during the early nymph stage. A second application should be made after 15 days. Alternatively, 10% imidacloprid (WP) at 2000 times dilution can be used, although it acts more slowly, it offers a longer residual effect of up to 25–30 days and promotes better crop production.