-
What are the control methods for peanut root rot?
In recent days, many farmers have brought peanut leaves to the shop to ask what is going on. On the surface, the leaves are yellowing, and some farmers think it is a lack of nutrients, but in fact it is mainly caused by root rot. A while ago, rain was frequent, making the soil damp,
-
How to prevent and control pests and diseases in autumn peanut cultivation
The main diseases of peanut include leaf spot and rust. For leaf spot, spray pesticide in time at the early stage of disease onset to prevent and control the disease. Use 75% chlorothalonil + 70% thiophanate-methyl at 1000-1500 times dilution; or 30% copper oxychloride + 75% chlorothalonil at 1000 times dilution, spraying 2-3 times, once every 10-15 days,
-
Adopting the "three protections" technique in peanut cultivation significantly increases yield
1. Preventing excessive vegetative growth. For peanut fields with relatively high soil fertility, good water and fertilizer conditions, and vigorous plant growth, when growth is too vigorous and excessive vegetative growth occurs, spraying hormones, namely plant growth regulators, can inhibit vegetative growth, promote reproductive growth, and coordinate the relationship between vegetative growth and reproductive growth.
-
How to regulate peanut flowering with chemical control? Practical measures explained in one article
Yield-increasing ling has the effect of promoting the movement of nutrients within the plant, accelerating cell differentiation, preventing shedding, preserving flowers and fruits, promoting grain filling and early ripening. During the peanut flowering period, spray the leaves 1~2 times with a 10~30×10-6 solution; the rate of blighted pods is reduced by 10%~20%, and per 667 sq m
-
How to prevent and control peanut bacterial wilt? Detailed explanation of prevention and control methods
1. Symptoms. Peanut bacterial wilt mostly begins to develop around flowering, but the disease is most severe during the peak flowering and pegging stage, and the condition eases somewhat after pod formation. The most notable feature of its symptoms is: the aboveground leaves of diseased plants wilt rapidly, the vascular bundles in the underground roots turn brown, and when the root crown is cut lengthwise, in moist conditions a cloudy bacterial ooze can be squeezed from the cut. If the diseased root crown section is suspended and immersed in clear water, a smoky cloudy liquid can be seen gushing from the cut, which is a reliable basis for confirming this disease. Usually the chlorophyll of the wilted leaves has not yet been destroyed, and although the leaves lack gloss, they still remain green, hence the name bacterial wilt.
-
How to prevent and control peanut leaf spot? These methods are very practical
1. Symptoms Peanut leaf spot disease mainly consists of black spot and brown spot, and both diseases mainly harm the leaves. When peanuts are affected, symptoms first appear on the lower leaves, then gradually spread to the upper leaves. In the early stage of the disease, small brown spots appear, which gradually develop into round
-
What are the control methods for corn smut?
In recent years, corn smut has become fairly common, and when the ear is affected it loses its value for food and feed, so control work should be done early. Throughout the entire growth period of corn, all young aboveground parts can be affected by corn smut. The diseased part is tumor-like, and the size of the tumor varies depending on
-
What are the control methods for corn sheath blight?
According to reports, in the southern corn planting areas, the incidence rate in normal years is about 40%, reaching 70% in severe cases, and up to 100% in individual plots or varieties; the incidence rate is even higher in seed production fields, with the plant incidence rate in normal years above 50%, and there is a trend of worsening year by year. In Yunnan
-
How to prevent and control wheat rosette dwarf disease? Growers should take preventive measures in advance
Symptoms and characteristics of rosette dwarf disease: infected plants have yellow-green alternating stripes on the upper leaves, increased tillering, stunted and dwarfed plants in a rosette-dwarf form, and generally cannot joint or head. Plants infected in early spring show symptoms successively during the green-up stage and jointing stage, with stripes on the heart leaf and a relatively darker green leaf color
-
How to control take-all disease after wheat turns green?
Wheat take-all disease, also known as black foot disease, is a typical root disease. It can occur throughout the entire growth period of wheat, and the pathogen only infects the roots and the basal 1-2 nodes of the stem. The severity of the disease is affected by many factors. Continuous cropping and repeated cropping make the disease severe; when wheat and summer corn are grown twice a year and continuously for many years, the disease occurs severely; low soil fertility and an imbalanced ratio of nitrogen, phosphorus, and potassium, especially in phosphorus-deficient plots, make the disease severe; rainy springs and high soil moisture are conducive to the disease.
条件筛选