Weed Dynamics and Crop Productivity as Influenced by Weed Management Practices and Fertility Levels in Groundnut (Arachis hypogaea L.)

IF 0.8 4区 生物学 Q3 AGRONOMY Legume Research Pub Date : 2023-10-19 DOI:10.18805/lr-5197
Swapnashree Sahoo, Rabiratna Dash, Satyananda Jena, Manoranjan Satapathy, Ipsita Kar, Jyotiprakash Mishra, Narayan Panda
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Abstract

Background: Groundnut or peanut (Arachis hypogaea L.) is known as the “King of Oilseeds” which belongs to family Fabaceae (Leguminosae). It is highly susceptible to weed infestation because of its slow initial growth up to 40 DAS and small foliage cover. However, study on use of mechanical weed control methods with different fertility regimes for improving the productivity of groundnut was limited. Therefore, the objective of this study was to find a suitable method for optimising the productivity of groundnut. Methods: A field experiment was conducted at Odisha University of Agriculture and Technology, Bhubaneswar for two consecutive years of 2020 and 2021. The field experiment comprised 16 treatment combinations of four weed management practices and four fertility levels. The weed management practice included W1-Pre-emergence (PE) application of pendimethalin @ 0.75 kg ha-1, W2-Pre-emergence (PE) application of pretilachlor @ 0.5 kg ha-1, W3-Manual weeding (20 and 40 DAS), W4-Twin wheel hoe at 20 DAS followed by (fb) hand weeding at 40 DAS and four fertility levels includes T1-100% RDF (20:40:40) (N: P205: K2O kg ha-1), T2- 75% RDF + 5 tonnes FYM ha-1, T3- 50% RDF + 10 tonnes FYM ha-1, T4- without fertilizer + without FYM. Result: Amongst the weed management practices, use of twin wheel hoe at 20 DAS followed by hand weeding at 40 DAS significantly reduced the weed density, weed dry weight, weed index and recorded the highest weed control efficiency (69.8%). Highest weed index (32.9) was recorded with the application of pretilachlor @ 0.5 kg ha-1 (PE), which was followed by weed index of (28.5) with application of pendimethalin @ 0.75 kg ha-1 (PE). The fertilizer management practice with application of 50% RDF + 10 tonnes FYM ha-1 gave the highest yield and considerably reduced the total weed density, weed dry weight and recorded the maximum weed control efficiency (71.8 % at harvest). We suggest that weed management with twin wheel hoe at 20 DAS followed by hand weeding at 40 DAS along with application of 50% RDF + 10 tonnes FYM ha-1 as the most effective strategy for controlling the weed menace in groundnut with the highest weed control efficiency.
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花生(Arachis hypogaea L.)杂草动态及肥力水平对作物生产力的影响
背景:花生(arachhis hypogaea L.)被称为“油料之王”,属于豆科(豆科)。由于其初始生长缓慢,可达40 DAS,叶片覆盖小,因此极易受到杂草的侵害。然而,利用不同肥力制度下的机械除草方法提高花生产量的研究有限。因此,本研究的目的是寻找一种合适的方法来优化花生的产量。方法:2020年和2021年连续两年在布巴内斯瓦尔奥里萨邦农业技术大学进行田间试验。田间试验包括4种杂草管理方式和4种肥力水平的16种处理组合。杂草管理实践包括W1-Pre-emergence pendimethalin @ 0.75公斤(PE)应用农业,W2-Pre-emergence pretilachlor @ 0.5公斤(PE)应用农业,W3-Manual除草(20和40 DAS), W4-Twin轮锄头在20 DAS紧随其后(神奇动物)手除草40 DAS和四个生育水平包括t1 - 100% RDF (20:40:40) (N: P205: K2O公斤农业,T2 - 75%施厩肥农业的RDF + 5吨,T3 - 50%施厩肥农业的RDF + 10吨,T4 -没有化肥+没有施厩肥。结果:在杂草管理方式中,采用双轮锄在20 DAS时进行除草,再采用手动除草在40 DAS时进行除草,可显著降低杂草密度、干重和杂草指数,杂草防治效率最高(69.8%)。施用量为0.5 kg ha-1 (PE)时,杂草指数最高,为32.9;施用量为0.75 kg ha-1 (PE)时,杂草指数次之,为28.5。施用50% RDF + 10吨FYM ha-1的施肥管理措施产量最高,显著降低了杂草总密度和干重,并记录了最高的杂草控制效率(收获时为71.8%)。研究结果表明,采用双轮锄除草,再采用手动除草,并施用50% RDF + 10吨FYM ha-1,可有效控制花生杂草威胁,防效最高。
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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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