In order to control pests and disease in cotton (Gossypium hirsutum) crop, Shatibhai Patel of Surendranagar districts of Gujarat sows dillseed (Anethum graveolens) along side the cotton crop. According to Shantibhai, pests do not frequent the cotton crop due to the strong smell of the dillseed plants. This not only ensures better cotton crop but saves money spent on pesticides and gives added economic advantage of selling the dill seeds.
Crop Family: Malvaceae
Crop Scientific Name: (Gossypium hirsutum)
Crop Vernacular Name: Ruyi
Formulation: Strong smell of the dillseed plants.
Ingredients: Intercrop of Dillseed (Anethum graveolens)
"Crop rotation this is another cultural control measure widely adopted by most cotton farmers in Zimbabwe. Cotton is rotated with other crops in order to break the life cycle of pests and diseases. Crop rotation is effective on red and pink bollworms which have narrow host ranges. African and spiny bollworms are polyphagous, so will not be affected by rotations. Pink
bollworm: While some insect pests are aggravated by rotation others are suppressed with rotations. The pink bollworm only can survive on cotton squares and bolls, thus large scale rotation out of cotton has a dramatic impact on this pest (Blasingane et al., 1991). Rotations crops used include maize, wheat and soyabeans." [Mapuranga, Rangarirai&Chapepa, B. &Mudada, Nhamo. (2015). Strategies for integrated management of cotton bollworm complex in
Zimbabwe: A review International Journal of Agronomy and Agricultural Research (IJAAR). International Journal of Agronomy and Agricultural Research (IJAAR). 7. 23-35.]
"Results of this study have shown that occurrence and abundance of cotton and cowpea pests is not affected by cotton and cowpea intercropping systems. Pesticides applied on cotton to control cotton pests in different intercropping arrangements significantly reduced populations of cowpea pests. This would therefore help famers reduce costs associated with pest’s management if cotton and cowpea were grown as intercrops as opposed to when each crop was grown as sole crop." [Kabambe, V.. (2016). Effects of intercropping systems and foliar pesticides applied to control cotton (Gossypiumhirsutum L) pests on incidences of cowpea (Vignaunguiculata L. Walp) pests. 6. 313-321.]
"One of the major hurdles in choosing the right intercrop combination for pest suppression is to determine which combinations will reduce pest abundance, since all combinations of crops will not produce the desired effect. So, intercrop can be a used as sole approach to pest management or it can be combined with other pest management strategies such as host-plant resistance, augmentative biological control, and chemical control. The successful use of intercropping to manage pests depends on a thorough knowledge of how distinct crop characteristics and combinations will influence the behavior of pest and beneficial arthropods." [AtanuSeni. “Role of Intercropping Practices in Farming System for Insect Pest Management. Acta Scientific Agriculture 2.2 (2018): 08-11.]