جستجوی مقالات مرتبط با کلیدواژه « sewage sludge compost » در نشریات گروه « کشاورزی »

انتخاب همه

Field and laboratory evaluation of the long-term effect of various organic fertilizers on sandy soil

József Tibor Aranyos *, Liyana Zulkipli, Marianna Makádi

International Journal of Recycling of Organic Waste in Agriculture, Volume:12 Issue: 4, Autumn 2023, PP 15 -32

Purpose
Recent trends in land use and the effects of climate change resulted in the decline of organic matter content of the soils. Since crop management systems play an important role in soil carbon sequestration, therefore our aim was to determine the long-term effects of different organic fertilizers on soil respiration and its driving factors.
Method
The research work was carried out in two long-term experiments on sandy soil. The field and laboratory measurements of soil respiration were done in fallow, farmyard manure, farmyard manure + fertilizer, green manure and in sewage sludge compost (18 and 27 t ha-1) treatments. In addition, soil physical-chemical parameters were measured for complex evaluation.
Results
The results of laboratory and field soil respiration measurements were usually consistent with each other. The most intensive soil respiration was measured in sewage sludge compost treatments and in farmyard manure with NPK. In these treatments, the organic matter input and the positive changes in the physical and chemical properties of sandy soil stimulated the soil life, which resulted in more intensive soil respiration and enzyme activities. According to the results of correlation analysis the soil respiration was significantly influenced by the organic matter content, pH and moisture content of the soil.
Conclusion
This study indicated the importance of replenishing the soil with organic matter, which can contribute to the maintenance of soil quality. In addition, the application of sewage sludge compost can be well utilized in agriculture for nutrient supply and improving carbon sequestration of sandy soil.

Keywords: Long-term crop rotation, Organic Fertilizer, Sewage sludge compost, soil respiration, Enzyme activity}

Abstract View Paper Research/Original Article Original: English
Effect of a Long-Term Compost Treatment on the Water Management of Sandy Soil

J., Oacute, Zsef Tibor Aranyos *, Marianna Mak, Aacute, Di, Vikt, Oacute, Ria Orosz, Attila Tom, Oacute, Csik, Ibolya Demeterj., Oacute, Zsef MEsz, Aacute, Ros, Lajos Blask, Oacute

ECOPERSIA, Volume:5 Issue: 3, Summer 2017, PP 1849 -1857

Background
The large part of sandy soils in Hungary has unfavorable water management properties. Studies have shown that the sewage sludge compost, due to its high organic content, is suitable for improving structure and water management of these soils. The aim of our study was to determine the effects of the application of sewage sludge compost on physical properties of sandy soil.
Materials And Methods
The experiment was established in 2003 at the Research Institute of Nyíregyháza of the University of Debrecen in Hungary to study the utilization of sewage sludge compost in agriculture. In this study, however, the changes of water retention and erodibility of soil were measured for three periods. The soil type of the experiment is Arenosol (Dystric Lamellic Arenosol). The applied compost contained sewage sludge of 40%, straw of 25%, bentonite of 5% and rhyolite of 30%. The compost is applied every 3rd year in the following amounts: 0, 9, 18 and 27 Mg ha-1 of dry matter.
Results
The compost treatment had a beneficial effect on soil structure thereby reducing the runoff and sediment loss under high intensity rainfall (130 mm h-1). However, in the control plot there was significantly higher water erosion. The water retention of soil was slightly increased after compost application.
Conclusions
The compost application improved the water management properties of sandy soil, which is connected with organic matter addition into soil. The compost treatment had a beneficial effect on soil structure thereby reducing the runoff and sediment loss.

Keywords: Erosion, Sandy Soil, Sewage Sludge Compost, Water Management}

Abstract View Paper Original: English
تاثیر رطوبت خاک و کمپوست لجن فاضلاب بر شاخص کلروفیل برگ و برخی ویژگی های رشد گیاه یونجه در شرایط گلخانه ای

نصرت الله نجفی، شهاب محمودی، عادل ریحانی تبار

نشریه روابط خاک و گیاه، پیاپی 20 (زمستان 1393)، صص 205 -218

با توجه به مقدار کم مواد آلی در اغلب خاک های زیر کشت ایران و بروز تنش خشکی در گیاهان بر اثر کمبود بارندگی، استفاده از کمپوست لجن فاضلاب برای افزایش مواد آلی خاک و بهبود حاصل خیزی خاک، افزایش تحمل گیاهان در برابر کم آبی و بهبود عملکرد توصیه شده است. لذا، این تحقیق با هدف بررسی اثر سطوح رطوبت خاک و کمپوست لجن فاضلاب بر شاخص کلروفیل برگ و برخی ویژگی های رشد گیاه یونجه در شرایط گلخانه ای انجام شد. آزمایش به صورت فاکتوریل و در قالب طرح پایه بلوک های کامل تصادفی با سه تکرار و دو عامل شرایط رطوبت خاک در سه سطح (0.34FC-0.50FC، 0.56FC-0.75FC و 0.81FC-FC) و کمپوست لجن فاضلاب در چهار سطح (صفر، 15، 30 و 60 گرم بر کیلوگرم خاک) انجام شد. نتایج نشان داد که اثر سطوح رطوبت خاک بر شاخص کلروفیل برگ به میزان کمپوست لجن فاضلاب بستگی دارد. کمبود آب در خاک موجب کاهش معنی دار وزن خشک بخش هوایی و ریشه و ارتفاع بوته شد (01/0>P). بخش هوایی یونجه نسبت به تنش کمبود آب حساس تر از ریشه بود. مصرف 15 و 30 گرم کمپوست لجن فاضلاب بر کیلوگرم خاک موجب افزایش معنی دار شاخص کلروفیل برگ، وزن خشک بخش هوایی و ریشه، ارتفاع بوته و نسبت وزن خشک بخش هوایی به ریشه شد (01/0>P). اثر متقابل سطوح رطوبت خاک و کمپوست لجن فاضلاب بر شاخص کلروفیل برگ، وزن خشک بخش هوایی و ریشه، ارتفاع بوته و نسبت وزن خشک بخش هوایی به ریشه معنی دار بود (01/0>P). بیشترین وزن خشک بخش هوایی و ریشه، ارتفاع بوته و نسبت وزن خشک بخش هوایی به ریشه با مصرف g/kg 30 کمپوست لجن فاضلاب در شرایط رطوبتی 0.81FC-FC مشاهده شد. همچنین، نتایج نشان داد که مصرف 30 گرم کمپوست لجن فاضلاب در کیلوگرم خاک، باعث کاهش اثر تنش کمبود آب بر گیاه یونجه گردید

کلید واژگان: آب خاک, تنش خشکی, کمپوست لجن فاضلاب, رشد یونجه}

چکیده مشاهده متن زبان: فارسی

Effects of soil moisture and sewage sludge compost on leaf chlorophyll index and some growth traits of alfalfa in greenhouse conditions

N. Najafi, Sh Mahmoudi, A. Reyhanitabar

Journal of Soil and Plant Interactions, Volume:5 Issue: 20, 2015, PP 205 -218

Due to low organic matter content in most of the cultivated soils of Iran and occurrence of drought stress in plants because of low precipitation, application of sewage sludge compost has been recommended for increasing soil organic matter content and improving soil fertility, increasing crop tolerance to water deficit and improving crop yield. So, in this study, the effects of soil moisture and sewage sludge compost levels were investigated on leaf chlorophyll index and some growth traits of alfalfa (Medicago sativa L.) in greenhouse conditions. A factorial experiment, based on randomized complete blocks design with three replications, was conducted with two factors of soil moisture conditions at three levels (0.81FC-FC, 0.56FC-0.75FC and 0.35FC-0.50FC) and sewage sludge compost at four levels (0, 15, 30 and 60 g/kg of soil). Results showed that the effect of soil moisture levels on leaf chlorophyll index was dependent on the level of sewage sludge compost. Soil water deficit significantly decreased shoot and root dry weights and plant height (P<0.01). The sensitivity of alfalfa shoot to soil water deficit stress was greater than its root. Application of 15 and 30 g sewage sludge compost per kg of soil significantly increased leaf chlorophyll index, shoot and root dry weights, plant height and shoot to root dry weight ratio (P<0.01). The interaction effects of soil moisture and sewage sludge compost on leaf chlorophyll index, shoot and root dry weights, plant height and shoot to root dry weight ratio were significant (P<0.01). The highest shoot and root dry weights, plant height and shoot to root dry weight ratio were observed at 30 g sewage sludge compost per kg of soil and 0.81FC-FC soil moisture level. Also, the results showed that application of 30 g sewage sludge compost per kg of soil alleviated water deficit-induced adverse effects on alfalfa plant.

Keywords: Soil water, Drought stress, Sewage sludge compost, Alfalfa growth}

Abstract View Paper Original: Persian

نکته

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جستجوی مقالات مرتبط با کلیدواژه « sewage sludge compost » در نشریات گروه « کشاورزی »