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Interference of horse purslane (Trianthema portulacastrum L.) and other weeds affect yield of autumn planted maize (Zea mays L.)
Saudi Journal of Biological Sciences ( IF 4.4 ) Pub Date : 2021-01-20 , DOI: 10.1016/j.sjbs.2021.01.023
Khuram Mubeen , Muhammad Waqas Yonas , Ahlam Khalofah , Rao Muhammad Ikram , Naeem Sarwar , Muhammad Shehzad , Allah Wasaya , Haseeb ur Rehman , Tauqeer Ahmad Yasir , Mudassir Aziz , Mahmood Alam , Hafiz Muhammad Rashad Javeed , Mazhar Ali Khan , Muqarrab Ali , Matlob Ahmad , Abdul Khaliq , Muhammad Abdul Qayyum , Wazir Ahmad , Khalid Ali Khan

To assess comparative losses of Trianthema portulacastrum (HP) relative to other weeds, the experiment was set during consecutive summer seasons 2018 and 2019 at the Research Farm MNS-University of Agriculture, Multan, Pakistan. Experiment consisted three replications which were laid out under randomized complete block design. Experiment consisted of ten treatments viz: weeds free (whole season), HP free till 20 Days after emergence (DAE), HP free till 40 DAE, HP free till 60 DAE, all weeds free 20 DAE, all weeds free 40 DAE, all weeds free 60 DAE, weedy check (all weeds), weedy check except HP and weedy check containing only HP. During 2018 in all weeds weedy check, maximum HP relative density (33.33%) was observed while in 2019, plot where weeds were controlled from growing till 20 DAE showed (80%) relative density at 30 DAE. HP maximum frequency (66.67%, 77.78%) and relative frequency (66%, 100%) was recorded at 45 DAE in plots where HP was kept controlled till 20 DAE and all weeds kept controlled till 20 DAE, respectively. Maximum number of grains per cob (738, 700.68), 1000 grain weight (306.66, 271.51 g) and grain yield (6150, 8015 kg hec-1) were recorded in plots which were kept all weed free till 60 DAE. As the competition period of weeds increased over 40 DAE, it substantially reduced yield of maize. Keeping the plots HP free till 40 DAE in the maize fields with HP as the major dominating weed, likely increase in maize grain yield is up to 30% compared to the fields where HP left un attended throughout the growing season. However, if maize field is infested with a mix of weeds with more than one dominating weeds including HP, compared to weedy situation the whole season, 30% higher grain yield can be obtained if all weeds are kept controlled till 40 DAE. Hence it can be concluded that whether the farmers face heavy HP infestation only or the mix of weeds as dominating weeds, in either case farmer should control weeds within first 40 days in maize field for better grain yield.



中文翻译:

齿slTrianthema portulacastrum L.)和其他杂草的干扰会影响秋播玉米(Zea mays L.)的产量

评估马齿Tri的比较损失(HP)相对于其他杂草,该实验于2018年和2019年连续的夏季在巴基斯坦木尔坦的MNS研究农场农业大学进行。实验包括三个重复,这些重复在完全随机区组设计下进行。实验包括十种处理方法:即无杂草(整个季节),无HP直至出苗后20天(DAE),无HP直至40 DAE,无HP直到60 DAE,所有杂草免费20 DAE,所有杂草免费40 DAE,全部杂草免费60 DAE,杂草检查(所有杂草),除HP以外的杂草检查和仅包含HP的杂草检查。在2018年的所有杂草杂草检查中,均观察到最大HP相对密度(33.33%),而在2019年,从生长到20 DAE的杂草得到控制的地块显示30 DAE的相对密度(80%)。HP最大频率(66.67%,77.78%)和相对频率(66%,在45个DAE的地块记录了100%的浓度,其中HP一直控制到20 DAE,所有杂草都一直控制到20 DAE。每粒玉米的最大粒数(738,700.68),1000粒重(306.66,271.51 g)和谷物产量(6150,8015 kg hec)-1)记录在使所有杂草保持游离直至60 DAE的地块上。随着杂草的竞争期增加到40 DAE以上,这大大降低了玉米的产量。在以HP为主要杂草的玉米田中,使田间的HP保持自由状态直至40 DAE,与HP在整个生长季节都无人照管的田地相比,玉米籽粒增产的可能性可能高达30%。但是,如果在玉米田中杂草与包括HP在内的一种以上杂草混合,那么与整个季节的杂草情况相比,如果将所有杂草控制至40 DAE,则谷物产量可提高30%。因此可以得出结论,无论农民仅面对重度HP侵害还是杂草为主的杂草,无论哪种情况,农民都应在玉米田的前40天内控制杂草以提高谷物产量。

更新日期:2021-01-20
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