Symptoms and Control Measures of Peanut Fruit Rot Disease

Symptoms and Control Measures of Peanut Fruit Rot Disease

Symptoms and Control Measures of Peanut Fruit Rot Disease

Peanut cultivation covers a large area, and various diseases occur during its production. Peanut fruit rot disease, also known as "fruit rot," is particularly harmful and can even lead to complete crop failure. Let's learn about the symptoms and control measures of peanut fruit rot disease.

1. Symptoms of Peanut Fruit Rot Disease

The main symptom of peanut fruit rot disease is the rotting of the peanuts. Mild cases show brown or black discoloration in half of the pod, with small and hard kernels that are poorly developed. The skin of the pod turns yellow. In severe cases, the entire pod becomes dark black, with both the skin and kernels rotten. This disease generally occurs in whole plants or patches. It can occur from July, when peanuts enter the podding stage, until harvest.

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2. Control Measures for Peanut Fruit Rot Disease

  1. Use high-quality varieties and mix fungicides and insecticides such as imidacloprid microcapsule suspension agent into the seed dressing to prevent insects and diseases.

  2. Balance fertilization by applying organic fertilizers to activate soil organic matter and improve the physical and chemical properties of the soil. Also, mix a suitable amount of biological bacterial fertilizer into the base fertilizer to increase beneficial bacteria in the soil and reduce the accumulation of harmful bacteria. Soil can also be treated with microbial agents.

  3. Timely control pests and diseases. Diseases like ground tigers can also contribute to peanut fruit rot disease, so early prevention is crucial.

  4. Chemical control: After the peanuts are sown and before flowering, spray fungicides such as mancozeb wettable powder, methyl thiophanate, benomyl, and chelated iron. For severe cases, spray again after 7-10 days. Alternatively, use mancozeb or methyl thiophanate solution for root irrigation.

In conclusion, there are many reasons that can lead to peanut fruit rot disease. It's important to be vigilant in field management to prevent its occurrence.

Symptoms and Control Methods of Peanut Fruit Rot Disease

Peanut cultivation involves vast areas, but it's often plagued by various diseases. Among these, peanut fruit rot disease, also known as "fruit rot," poses a significant threat, potentially leading to complete crop failure. Let's delve into the symptoms and comprehensive control methods for this challenging issue.

1. Symptoms of Peanut Fruit Rot Disease

The hallmark symptom of peanut fruit rot disease manifests as the decay of peanut pods. In mild cases, affected pods exhibit browning or blackening, with small, hardened kernels inside and a general deterioration in development. The fruit shell may show signs of yellowing. Conversely, severe instances witness the entire pod darkening to a deep black, with both shell and kernel succumbing to decay. This disease typically appears sporadically or in patches, posing a threat from the pod formation phase in July until harvest.

2. Control Methods of Peanut Fruit Rot Disease

1. Selection of High-Quality Varieties

Begin with the foundation: opt for high-quality peanut varieties. During sowing, ensure even distribution of a mixture comprising fungicides and insecticides, such as diazinon microcapsule suspension, to preemptively combat diseases and pests.

2. Balanced Fertilization

Achieve soil vitality through balanced fertilization. Incorporate organic fertilizers to activate soil organic matter, enhancing soil's physical and chemical properties. Augment base fertilizers with an appropriate dosage of bio-bacterial fertilizer to bolster beneficial bacteria levels in the soil, thereby reducing the accumulation of harmful pathogens. Consider soil treatment with microbial agents for added efficacy.

3. Timely Prevention and Control of Diseases and Pests

Stay ahead of the curve by promptly addressing potential disease and pest threats. Ground tigers and other pests, for instance, can indirectly contribute to the onset of peanut fruit rot disease. Vigilance and preemptive action are paramount.

4. Chemical Control

Deploy chemical interventions judiciously. Following uniform germination of peanuts and prior to flowering, apply fungicides like carbendazim wettable powder, methyl thiophanate, benomyl, and chelated iron. For severe outbreaks, adopt a strategy of repeated spraying at intervals of 7-10 days. Root drenching with solutions of carbendazim or methyl thiophanate can yield positive results, particularly in severe cases.

In conclusion, peanut fruit rot disease can arise from a myriad of factors, necessitating comprehensive and proactive management strategies. Diligent observation and adherence to integrated pest management principles are pivotal in safeguarding peanut crops against this insidious threat.

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