تاثیر کمپوست ضایعات پسته و قارچ میکوریز بر رشد رویشی و وضعیت تغذیه‌ای دانهال‌های پسته در یک خاک شور-سدیمی

کودهای آلی و قارچ‌های هم‌زیست به‌علت نقش ویژه آن‌ها به‌عنوان حلقه ارتباطی خاک و گیاه در حیطه کشاورزی اهمیت بسیار دارند. در حال حاضر بخش‌های وسیعی از باغات پسته کشور، با بحران شوری آب و خاک مواجه هستند. در این پژوهش تاثیر کمپوست ضایعات فرآوری شده پسته در سه سطح (صفر، 10 و 15 کیلوگرم به‌ازای هر نهال) و قارچ میکوریز در سه سطح (صفر، 100 و 200 گرم خاک حاوی اسپور قارچ به‌ازای هر نهال) متعلق به چهارگونه (funneliformis mosseae،وrhizophahus intraradices،وglomus iranicus و irregularis rhizophahus) بر رشد رویشی و غلظت عناصر غذایی برگ دانهال‌های دو رقم پسته اکبری و بادامی زرند با سه تکرار (هر تکرار شامل چهار دانهال) بررسی شد. این پژوهش به‌صورت آزمایش کرت‌های خردشده-فاکتوریل در قالب بلوک‌های کامل تصادفی به‌مدت دو سال (1396 و 1398) در شرایط شور و سدیمی بودن آب و خاک اجرا شد. نتایج نشان داد که کاربرد 15 کیلوگرم کمپوست ضایعات پسته غلظت عناصر نیتروژن، آهن، روی و منگنز موجود در برگ را به‌ترتیب 4، 9/7، 8 و 12/1 درصد در مقایسه با شاهد افزایش داد. همچنین با کاربرد 15 کیلوگرم کمپوست ضایعات پسته ارتفاع، عرض و سطح برگ دانهال نیز به‌ترتیب 9/6، 11/8 و 2/8 درصد نسبت به شاهد افزایش یافت. بیش‌ترین غلظت آهن برگ (702/2 میلی‌گرم بر کیلوگرم) در تیمار 200 گرم قارچ، و در تیمار 100 گرم میکوریز غلظت منگنز، سطح برگ و ارتفاع به‌ترتیب با مقادیر 64/8 میلی‌گرم در کیلوگرم، 415/3 سانتی‌مترمربع و 44/9 سانتی‌متر بیش‌ترین بود. درصد کلونیزاسیون ریشه در ارقام اکبری و بادامی زرند به‌‌ترتیب 35/1 و 27/2 بود. در مجموع نتایج این پژوهش نشان داد 15 کیلوگرم کمپوست ضایعات پسته به همراه 100 گرم قارچ میکوریز در شرایط شوری زیاد آب و خاک می‌تواند موجب رشد رویشی مناسب در دانهال‌های پسته شود.

the effect of pistachio waste compost and mycorrhizal fungi on vegetative growth and nutritional status of pistachio seedlings in a saline-sodic soil

organic fertilizers and symbiotic fungi are very important in agriculture because of their special role as a link between soil and plant. currently, large parts of the country’s pistachio orchards are facing water and soil salinity crisis. in this study, the effect of processed pistachio waste compost at three levels (0, 10 and 15 kg per seedling) and mycorrhizal fungi at three levels (0, 100 and 200 g soil containing fungal spores per seedling) belonging to four species (funneliformis mosseae, rhizophahus intraradices, glomus iranicus, rhizophahus irregularis) on vegetative growth and leaf nutrients concentration of two pistachio cultivars of akbari and badami zarand, with three replications (each replicate consisting of four seedlings) were investigated. this experiment was carried out as a factorial split-plot in randomized complete block design (rcbd) for two years (2017 and 2019) in the saline-sodic soil and water condition. the results showed that 15 kg of pistachio waste compost increased the concentrations of nitrogen, iron, zinc and manganese elements in the leaves by 4, 9.7, 8 and 12.1% compared to control, respectively. also, the height, width and leaf area of seedling leaves increased by 9.6%, 11.8% and 2.8%, respectively, by applying of 15 kg of pistachio waste compost compared to the control. the maximum concentration of leaf iron (702.2 mg kg-1) was observed in the treatment of 200 g of fungi. in the treatment of 100 g of mycorrhiza, the concentrations of manganese, leaf area and height were the highest with 64.8 mg kg-1, 415.3 cm2 and 44.9 cm, respectively. the root colonization percentages were 35.1 and 27.2 in akbari and badami zarand cultivars, respectively. overall, 15 kg of pistachio waste compost along with 100 grams of mycorrhizal fungi can result in proper vegetative growth of pistachio seedlings the saline water and soil conditions. background and objective: one of the important problems in the world pistachio industry is the waste produced by pistachio processing. mycorrhizal fungi is among the most important microorganisms present in most soils and mycorrhizal symbiosis is also one of the most well-known, widespread, and at the same time the most important symbiosis relationship (4). fertile pistachio cultivated area in iran is 405691 ha and the total yield was 337381 tons (1). almost all pistachio orchards in iran are mainly located in arid and semi-arid regions and have serious limitations (2, 3 and 5). the aim of this study was to determine whether compost of pistachio waste along with mycorrhizal fungus can be effective in improving the nutrient uptake from the soil and the vegetative growth of pistachio seedlings under saline-sodic conditions of soil and water. methods: a field experiment was conducted on two seedlings pistachio (pistacia vera l.) cultivars (akbari and badami zarand) in three replications (each replication consisted of four seedlings). the experiment was laid out in the factorial split-plot arrangement based on a randomized complete block design (rcbd) for four years (2016-2017 and 2018-2019) in the feyzabad pistachio research station of khorasan razavi, iran. experimental factors including, pistachio waste compost in three levels of zero, 10 and, 15 kg seedling-1; mycorrhizal fungi (belonging to four species, funneliformis mosseae, rhizophahus intraradices, glomus iranicus, and rhizophahus irregularis) in three levels of zero, 100 and, 200 g of soil containing fungal spores per seedling (one gram of soil containing 100 to 120 propagule of mycorrhizal fungi) were applied in the first and third years of experiment. the investigated traits were recorded and measured in the second and fourth years of the experiment. results: the year had a significant effect on nutrient uptake especially calcium, iron and manganese, and biological nitrogen fixation due to a significant increase