First, the distribution and damage of soybean cyst nematode disease in China's Henan, Shandong, Jiangsu, Anhui and other soybean production areas generally occur. The disease is caused by the parasites of soybean cyst nematodes, which can reduce soybean production by 10% to 20%. In severe cases, the loss can be as high as 50%, and even be eliminated. In addition to endangering soybeans, the disease also harms many legumes. Second, the symptoms of soybean cyst nematode disease mainly damage the roots, so that the aboveground plant growth is poor, dwarf, yellow stems and leaves, flower groups, less strong or not strong. Pulling up the diseased plants showed that the roots were underdeveloped, the lateral roots were reduced, the fine roots were increased, the root nodules were significantly reduced, and white granules were attached to the roots. Third, the occurrence of regular cyst nematode eggs in the cysts winter in the soil. In the spring of the following year, eggs hatch into the soil. The female larvae invade from the root hairs of the roots, harm in the cortex tissue of the roots, and develop into lemon forming insects, breaking through the cortex of the roots, exposing the surface of the host, and adsorbing on the host roots with mouthparts. Soil sand, thin, alkaline, high soil temperature, good permeability, is conducive to larvae activity and dissemination, serious incidence of continuous cropping. Fourth, control methods (a) agricultural measures. Rotate with cereal crops for 1 to 2 years, increase phosphate fertilizer, timely irrigation. (b) Chemical control. Use 3% carbofuran granules per acre 2 to 4 kg, apply pesticides in the sowing ditch, and cover the soil after application. Per acre can also be used 3% of methyl isofluosal granules 5 ~ 6 kg for furrow application, after the application of soil cover.
5Pcs 1/2" Chrome Plated Steel PT Thread Pig Automatic Nipple Drinker Waterer Hot
description:
Material: Stainless steel Chrome Plated + Plastic
Color: as shown in pic
Description
Size: 1.5 x 6.6 x 2cm / 0.51" x 2.60" x 0.79"(D(bottom) x H x D(top))
Features:
The drinkers are of stainless steel, solid one piece construction.
1/2" bite size with wrench body for easy wrench installation.
Adjustable flow rate with a three position inner orifice.
The stainless steel spring and dome provide long lasting protection from wear.
This nipple drinker is ideal for sows and finishers.
5 pack of automatic pig nipple drinkers for 1 sell.
Quantity: 5 Pcs/Set
Note:
Manual measuring, please allow 1-2mm error,thank you.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!!!
Water Feeding Item
Water Feeding Item,Poultry Chicken Drinkers,Poultry Water Drinker,Water Feeder
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