Affiner votre recherche
Résultats 1-10 de 1,282
Control of cotton pests and diseases by intercropping: A review Texte intégral
2021
Bao-jie CHI | Dong-mei ZHANG | He-zhong DONG
Control of cotton pests and diseases by intercropping: A review Texte intégral
2021
Bao-jie CHI | Dong-mei ZHANG | He-zhong DONG
Cotton (Gossypium hirsutum L.) is a globally important crop that is often damaged by pests and diseases. Current cotton pests and diseases management is dependent on chemical pesticides. Although chemical pesticides are usually effective, long-term application of these pesticides often leads to increased insecticide resistance in the pests, fewer natural enemies, reduced natural control, and a degraded environment. Because of increased environmental awareness and the need for sustainable cotton production, the control of cotton pests and diseases using biological means like intercropping is increasingly receiving attention. Intercropping of cotton with other crops can often boost the total yield and output of the intercropping system and provide significant economic benefits without sacrificing cotton quality. Intercropping also increases the number of natural enemies, and reduces the occurrence of cotton pests and diseases by altering the ecological structure and environmental conditions in the fields. Cotton-based intercropping is an effective strategy to reduce the competition between cotton and grain or other economic crops for arable land. It is also an important way to increase the populations of natural enemies in cotton fields for the management of pests and diseases. However, inappropriate intercropping can also increase labor requirements and even result in inadequate control of pests and diseases. This review focuses on the performance and the mechanisms of intercropping for reducing cotton pests and disease as well as on the effective management of intercropping systems. The risks and limitations, as well as the study approaches needed and the prospects of intercropping for the control of cotton pests and diseases, are also discussed. This information is intended to aid researchers and growers in designing economically viable and ecologically friendly pest and disease management strategies that will reduce the use of chemicals and the cost of cotton production.
Afficher plus [+] Moins [-]Control of cotton pests and diseases by intercropping: A review Texte intégral
2021
CHI, Bao-jie | Zhang, Dong Mei | DONG, He-zhong
Cotton (Gossypium hirsutum L.) is a globally important crop that is often damaged by pests and diseases. Current cotton pests and diseases management is dependent on chemical pesticides. Although chemical pesticides are usually effective, long-term application of these pesticides often leads to increased insecticide resistance in the pests, fewer natural enemies, reduced natural control, and a degraded environment. Because of increased environmental awareness and the need for sustainable cotton production, the control of cotton pests and diseases using biological means like intercropping is increasingly receiving attention. Intercropping of cotton with other crops can often boost the total yield and output of the intercropping system and provide significant economic benefits without sacrificing cotton quality. Intercropping also increases the number of natural enemies, and reduces the occurrence of cotton pests and diseases by altering the ecological structure and environmental conditions in the fields. Cotton-based intercropping is an effective strategy to reduce the competition between cotton and grain or other economic crops for arable land. It is also an important way to increase the populations of natural enemies in cotton fields for the management of pests and diseases. However, inappropriate intercropping can also increase labor requirements and even result in inadequate control of pests and diseases. This review focuses on the performance and the mechanisms of intercropping for reducing cotton pests and disease as well as on the effective management of intercropping systems. The risks and limitations, as well as the study approaches needed and the prospects of intercropping for the control of cotton pests and diseases, are also discussed. This information is intended to aid researchers and growers in designing economically viable and ecologically friendly pest and disease management strategies that will reduce the use of chemicals and the cost of cotton production.
Afficher plus [+] Moins [-]Effect of previous crop on the population density of the larvae and pupae of the cotton leafworm, Spodoptera littoralis in clover fields
1979
Nasr, El-Sayed A.
The relationship between the age of cotton plants and the population density of egg-masses of Spodoptera littoralis (Boisd)
1978
Nasr, El-Sayed A. | Radwan, Samir M.
Forecasting the level of infestation of the first generation of the cotton leafworm, S. Littoralis (Boisd.) from estimating the number of larvae and pupae in berseem fields
1977
Nasr, El-Sayed A.
The story of the cotton plant
1902
Wilkinson, Frederick
Towards an intelligent approaches for cotton diseases detection: A review Texte intégral
2022
Manavalan, R
Cotton is one of the leading fibers and plays a dominant role in the global industrial and agricultural economy. It is a primary material for the textile industry production. Various cotton leaf diseases include Bacteria blight, Foliar disease, Alternaria, etc. decrease the mass cotton production gain and quality. Hence, early diagnosis is demanded to avoid the ailments on cotton plants' leaves to increase productivity. The monitoring of cotton leaf disease and plants' health is complicated in farmers' naked eyes based on their own acquired knowledge and experience. It is expensive and impossible all-time for large plantation areas and leads to inaccurate control measurements of pesticides. The monitoring of the bugs and attacks in cotton plants is a sarcastic task for agriculture sustainability. Information on several diseases and syndrome can assist the farmers in determining the right pest control strategies to regulate diseases to improve cotton productivity. The study results betray that the available automated identification methods for cotton crop diseases are still in infancy. This review recognizes that automatic, economical, reliable, accurate, and rapid diagnosis systems are needed for cotton leaf disease discovery to increase production and quality. In this view, this paper exhibits an in-depth methodological review of various computational methods operated in different stages of plant-pathogen systems like image preprocessing, segmentation, feature extraction and selection, and classification to diagnosis the diseases for increasing cotton production. The issues behind the computational approaches of plant pathogens are addressed in-depth. The strengths and weaknesses of the state-of-art method in literature are highlighted. Further, the research issues also presented with valid future directions and further scope. Hence, novel, fully automatic computer-assisted systems are demanded to detect and classify numerous diseases in cotton plants.
Afficher plus [+] Moins [-]Population density of larvae and pupae of Spodoptera littoralis in both standing and cut Egyptian clover (Berseem)
1978
Nasr, El-Sayed A. | Wissa, Nabil H. | Radwan, Samir M.
The time-relative population trends of the egg-masses of the cotton leafworm, Spodoptera littoralis (Boisd.) in Kafr el Sheik and in el-Minia provinces throughout (9-10) years
1978
Nasr, El-Sayed A. | Nasr, El-Sayed A.
The relationship between the size of cotton area and the rate of infestation with the egg-masses of Spodoptera littoralis (Boisd.)
1978
Nasr, El-Sayed A.
