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Interactional Impacts of Drought and Weed Stresses on Nutritional Status of Seeds and Water Use Efficiency of Peanut Plants Grown in Arid Conditions
Gesunde Pflanzen ( IF 2.4 ) Pub Date : 2021-04-30 , DOI: 10.1007/s10343-021-00557-3
Ibrahim Mohamed El-Metwally , Hani Saber Saudy

Globally, rationalizing and converting each drop of irrigation water into food is a crucial act in agricultural production, particularly with climatic change concerns. Thus, the current study seeks to find an integral practice between irrigation pattern and weed control for saving the irrigation water in peanut fields with improving the nutritional value of the seeds. In sandy loam soil, under two irrigation regimes (75 and 100% of crop evapotranspiration—ETc75 and ETc100, respectively), the responses of peanut pod yield and quality (seed oil, N, P, and K contents) and water use efficiency to six weed control treatments (bentazon, clethodim, bentazon + hoeing once,clethodim + hoeing once, hoeing twice and unweeded) were evaluated. The obtained data of 2016 and 2017 seasons illustrated that whether using ETc75 or ETc100, hoeing twice showed the highest efficiency of weed control in peanut. Reduction in yield was diminished from 15.1–16.9% in unweeded plots to 9.0–9.7% in weeded ones. Controlling weeds led to a decrease in their efficiency for exploiting the applied water. That decrease amounted to 64.4 and 64.3% reductions with ETc100 as well as 66.9 and 64.4% reductions with ETc75 in the 1st and 2nd seasons, respectively. Peanut plants consumed less water under ETc75 than ETc100 to produce one kilogram of pods by about 17.9% in weeded plots (mean of applied weeded treatments) as well as 10.1% in weedy conditions. Also, ETc75 plus weeded practices raised the benefit/cost by 52.3% compared to unweeded one. In conclusion, the interactional impact of irrigation and weed control proved that peanut plants can be irrigated as much as 75% of evapotranspiration under water shortage conditions with hoeing twice or herbicide use. Selecting the appropriate weed control practice is a vital act for water saving and keeping productivity, quality and returns of peanut cultivation in arid regions.



中文翻译:

干旱和杂草胁迫对干旱条件下种植的花生种子营养状况和水分利用效率的相互作用影响

在全球范围内,将每一滴灌溉用水合理化和转化为粮食是农业生产中的关键行动,尤其是在考虑到气候变化的情况下。因此,当前的研究试图在灌溉方式和杂草控制之间找到一种整合的实践,以节省花生田的灌溉水,同时提高种子的营养价值。在沙壤土上,在两种灌溉方式下(作物蒸发蒸腾量的75%和100%-ETc 75和ETc 100分别),花生荚果产量和品质(种子油,N,P和K含量)和水分利用效率对六种杂草控制处理(苯达松,杀虫菊酯,苯达松+ hoe一次,once虫+ once一次,两次)的响应和杂草)进行了评估。2016年和2017年季节获得的数据表明,无论是使用ETc 75还是ETc 100,两次均显示出花生除草效率最高。产量降低从无杂草地的15.1–16.9%减少为杂草地的9.0–9.7%。控制杂草导致其利用所施用的水的效率降低。ETc 100减少了64.4%和64.3%,ETc 75减少了66.9%和64.4%在第一季和第二季 在ETc 75下,花生植物消耗的水比ETc 100少,在杂草田(应用杂草处理的平均值)生产1公斤豆荚的比例约为17.9%,在杂草条件下的产量为10.1%。此外,与未除草剂相比,ETc 75加上除草方法将收益/成本提高了52.3%。总之,灌溉与杂草控制的相互作用影响证明,在缺水条件下twice两次或使用除草剂,可灌溉高达75%蒸散量的花生植物。选择适当的除草措施是节水并保持干​​旱地区花生种植的生产率,质量和收益的重要举措。

更新日期:2021-05-02
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