Effect of Imidazolinones Alone and in Combination on Weed Dry Matter Accumulation in Pigeon Pea (Cajanus cajan L.)

IF 0.8 4区生物学 Q3 AGRONOMY

Legume Research Pub Date : 2020-07-15 DOI:10.18805/LR-4250

Amit Kumar, A. Dhaka, Satish Kumar, Samunder Singh, Ishmadhu

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引用次数: 0

Abstract

Background: Among pulse crops, pigeon pea [Cajanus cajan (L.) Millsp] is one of the most important pulse crops of India after chick pea. Among various biotic factors limiting pigeon pea yield, weeds are of prime importance which can causes seed yield losses up to 80 per cent. Therefore, weed management is an important key factor for enhancing the productivity of pigeon pea. Imazethapyr, an herbicide of imidazolinones group has been registered for soybean, groundnut and other legumes. Various trials in different regions were conducted to study the effects of imazethapyr alone or in combination for controlling the weeds in different crops but in pigeon pea limited research were conducted. Therefore, current study aimed to study the effect of imidazolinones alone and in combination on weed dry matter accumulation in pigeon pea (Cajanus cajan L.).Methods: Pre and post emergence application of imidazolinones alone and in combination was done and dry matter accumulation by different types of weeds i.e. grassy, broad leaf and sedges in pigeon pea crop were worked out at different interval of crop span.Result: Among all weed controls treatments, two hoeing at 40 and 70 DAS found most effective to control all kind of weeds. Alone application of pendimethalin was not effective to control sedges. PRE application of imidazolinones was comparatively more effective than POE application. Application of imidazolinones in combination with pendimethalin improves its efficacy to control total weeds than alone application of it. Therefore, PRE application of pendimethalin + imazethapyr @ 1000 + 75 g ha-1 proved to be an effective and a profitable alternative to the existing recommendation (two hoeing at 25 and 45 DAS) of weed control in pigeon pea in Haryana locality.

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咪唑啉酮单用及联用对豇豆杂草干物质积累的影响

背景:在豆类作物中，鸽豆[Cajanus cajan (L.)]蜜是印度最重要的豆类作物之一，仅次于鹰嘴豆。在各种限制鸽豆产量的生物因素中，杂草是最重要的，它可以导致高达80%的种子产量损失。因此，杂草管理是提高鸽豆生产力的重要关键因素。Imazethapyr是咪唑啉酮类除草剂，已注册用于大豆、花生等豆科植物。在不同的地区进行了不同的试验，研究了吡嗪噻韦单独或联合使用对不同作物杂草的控制效果，但在豇豆中进行的研究有限。因此，本研究旨在研究咪唑啉酮单用及联用对木豆(Cajanus cajan L.)杂草干物质积累的影响。方法:采用单药和联合施用咪唑啉酮的方法，计算不同类型杂草(草类、阔叶类和禾草类)在不同作物跨度内的干物质积累量。结果:在所有防杂草处理中，40和70 DAS两次锄地对各种杂草的控制效果最好。单独施用对莎草的防治效果不明显。预施用咪唑啉酮类药物相对于POE更有效。咪唑啉酮与戊二甲基灵联用对总杂草的防治效果优于单用。因此，在哈里亚纳邦地区，预先施用苯甲醚+ imazethapyr @ 1000 + 75 g ha-1被证明是一种有效和有益的替代方案，可以替代现有的建议(在25和45 DAS进行两次锄地)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

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.