Legume based Profitable Intercropping System for Management of Fall Armyworm in Maize

IF 0.8 4区 生物学 Q3 AGRONOMY Legume Research Pub Date : 2023-09-15 DOI:10.18805/lr-5179
R. Saritha, M. Visalakshi
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Abstract

Background: Incidence of fall armyworm in maize has been reported at a severe level since 2018 resulting in low yield and in extreme cases complete failure of the crop. In view of undesirable effects of unilateral reliance on chemicals, greener avenues like intercropping needs to be explored, which promise to subside pests, as well as, provide higher income to cultivators. Method: Field experiment was conducted from 2019 to 2021consecutively for three years to investigate the consequences of intercropping with legumes viz., red gram (Cajanus cajan L.), black gram (Vigna mungo L.), green gram (Vigna radiata L. ), cowpea (Vigna unguiuculata L.), groundnut (Arachis hypogaea L.) and soybean(Glycine max L.) on incidence of fall armyworm in maize and the cost economics involved. Result: Among the different intercrops studied, maize+cowpea recorded significantly lowest mean per cent infested plants (45.0 per cent) at 75 days after sowing which was on par with maize+green gram (45.5 per cent). The next effective intercropping system was maize+black gram (55.7 per cent) followed by maize+red gram (58.2 per cent). Maize as a sole crop recorded the highest mean per cent infested plants (76.3 per cent) at 75 days after sowing. The system equivalent yield (SEY) of the intercropping systems under study ascertained that the maize+cowpea achieved highest SEY of 5230 kg per ha followed by maize+green gram (5160 kg per ha) followed by maize+black gram (4900 kg per ha). Upon comparison of the benefit cost ratio (BC ratio), the maize+cowpea proved to be the most profitable with BC ratio of 4.11 followed by maize+ green gram (4.05) followed by maize+black gram (3.85), whereas, sole maize recorded minimum BC ratio of 2.87.
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以豆科作物为主的玉米秋粘虫盈利间作管理体系
背景:据报道,自2018年以来,玉米中秋粘虫的发病率处于严重水平,导致产量低,在极端情况下,作物完全歉收。鉴于单方面依赖化学品的不良影响,需要探索像间作这样更绿色的途径,这有望减少害虫,并为种植者提供更高的收入。方法:于2019年至2021年连续3年进行田间试验,研究豆科作物(红克、黑克、绿克、豇豆、花生、大豆)间作对玉米秋粘虫发生的影响及其成本经济效益。结果:在不同间作中,玉米+豇豆在播种后75天的平均侵染率最低(45.0%),与玉米+绿克(45.5%)相当。下一个有效间作制度是玉米+黑克(55.7%),然后是玉米+红克(58.2%)。玉米作为唯一的作物,在播种后75天的平均侵染率最高(76.3%)。所研究的间作系统的系统等效产量(SEY)确定玉米+豇豆的最高SEY为每公顷5230公斤,其次是玉米+绿克(每公顷5160公斤),然后是玉米+黑克(每公顷4900公斤)。通过效益成本比(BC比)的比较,玉米+豇豆的效益最高,其BC比为4.11,其次是玉米+绿克(4.05),最后是玉米+黑克(3.85),而单玉米的BC比最低,为2.87。
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来源期刊
Legume Research
Legume Research AGRONOMY-
CiteScore
1.30
自引率
37.50%
发文量
256
审稿时长
6-12 weeks
期刊介绍: Legume Research An International Journal. The Journal is an official publication of Agricultural Research Communication Centre. It is designed to bring out the original research articles on genetics, breeding, physiology, bacterial avtivity, production, quality, biochemistry and seeds of legumes crops. The objective of the journal is to serve as a forum for scientific community to publish their research findings on legumes ans to provide basis for new research. Journal is being scanned in the important indexing and abstracting services.
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