-
How to manage sweet potatoes in the mid-growth stage? Master these key points
Drought prevention and drainage: In most areas with high temperatures and abundant rain, the aboveground stems and leaves of sweet potatoes grow rapidly, and nutrients move upward rather than downward. At this time, attention should be paid to drainage, that is, promptly and quickly remove standing water from the field surface after rain to control excessive aboveground growth. If there is drought, watering is needed to prevent it, so that the tubers can rapidly expand in soil that is neither wet nor dry.
-
Prevention Methods for Sweet Potato Cellar Rot and Storage Management Techniques
The biggest problem during sweet potato storage is cellar rot. Once cellar rot occurs, it may at best reduce the quality of the sweet potatoes, and at worst cause all the sweet potatoes in the cellar to rot, resulting in varying degrees of loss. Sweet potato cellar rot is mostly caused by physiological diseases and infectious diseases. Physiological diseases mainly
-
How to Prevent and Control Sweet Potato Stem Nematode Disease? Detailed Technical Methods
Sweet potato stem nematode disease is a devastating disease in sweet potato production. It is highly destructive and spreads quickly. It can infect and cause damage during the seedbed stage, field stage, and storage stage, but it mainly infects the tubers. Affected sweet potatoes have brown, bluish skin with cracked patterns, and the tubers are light. Some tubers show no external abnormalities, but are hollow and pithy inside. This disease not only affects the quality of sweet potatoes, but also severely affects sweet potato yield.
-
How to prevent sweet potato storage diseases? These methods are very practical
Safe storage of fresh-eating sweet potatoes over winter and off-season sales bring potato farmers relatively high economic benefits. In the sweet potato-producing areas on the outskirts of Beijing, storing sweet potatoes has become fashionable. Fresh potatoes are large in volume, high in water content, tender in tissue, and thin-skinned, easily damaged, susceptible to chilling injury and disease infection, which leads to rot
-
Causes of Deformed Sweet Potato Storage Roots and How to Prevent Them
During the cultivation of sweet potatoes, we have all encountered the phenomenon of sweet potatoes forming some deformed storage roots. Some grow "misshapen," some are big at the head and small at the tail, forming burdock roots, some develop cracks, and some storage roots become hard, as if "red blood streaks" have grown inside them, and so on. These phenomena
-
How to prevent and control rice bakanae disease? Treating seeds with chemicals is effective
Last year, rice bakanae disease occurred in quite a few places in Tongzhou District, Nantong City. The occurrence characteristics, infection pathways and control techniques of this disease are introduced below. Bakanae disease can occur from the rice seedling stage to the heading stage, with the highest occurrence at the tillering stage. Seed-borne bacteria are the main source of infection
-
How to prevent and control rice purple sheath disease? Practical methods and key technical points
Symptoms After rice heading, dense pinhead-sized purple dots appear on the leaf sheath of the flag leaf, then gradually spread to most of the leaf sheath or the entire leaf sheath turns purplish-brown, especially obvious on the outer wall of the leaf sheath, sometimes infecting the inner wall or reaching deep into the stem. In severe cases, the flag leaf dies 7-10 days early.
-
Preventing lodging, premature senescence and delayed maturity in rice during the late growth stage
Abnormal phenomena in rice such as lodging, premature senescence and delayed maturity are caused by improper selection of varieties or by the influence of certain adverse factors during the growth and development of rice, resulting in conditions inconsistent with the normal growth targeted by cultivation, and seriously affecting the yield and quality of rice
-
What are the methods for preventing rice seedling-stage diseases?
I. Damping-off Symptoms: During the seedling stage, the young shoots sometimes become discolored, the leaves curl, and finally the plants wither and die, spreading very quickly. Control measures: The pathogen of damping-off survives in the soil, and the occurrence of damping-off is closely related to environmental conditions such as climate, seedbed temperature, soil pH, and fertilizer.
-
Five preventive management measures for the late growth stage of rice
When rice enters the late reproductive stage, it is a critical time for yield formation, and the following five preventive measures must be carried out well. 1. Prevent fertilizer deficiency. For fields where no nitrogen fertilizer was applied at the mid stage and where fertilizer deficiency and premature aging appear at the late stage, 2-3 kg of urea per mu can be applied at the booting stage as a booting fertilizer. For those growing normally and robustly,
条件筛选