[Effects of partial substitution of chemical fertilizer with organic fertilizer on arbuscular mycorrhizal fungal community of ].

Nutrient enrichment caused by fertilization would reduce the diversity of arbuscular mycorrhizal fungi (AMF). To explore whether partial substitution of chemical fertilizer with organic fertilizer would alleviate the negative effects of nutrient enrichment on AMF, we conducted a two-year mango () field experiment to examine the effects of different fertilization regimes on AMF communities in roots and rhizospheric soils by using high-throughput sequencing. The treatments included chemical-only fertilization (control), and two kinds of organic fertilizer (commercial organic fertilizer and bio-organic fertilizer) with replacing 12% (low) and 38% (high) chemical fertilizer.

Indigenous and commercial isolates of arbuscular mycorrhizal fungi display differential effects in roots and elicit divergent transcriptomic and metabolomic responses.

Background: Arbuscular mycorrhizal fungi (AMF) are beneficial soil fungi which can effectively help plants with acquisition of mineral nutrients and water and promote their growth and development. The effects of indigenous and commercial isolates of arbuscular mycorrhizal fungi on pear () trees, however, remains unclear.

Methods: was used to propagate indigenous AMF to simulate spore propagation in natural soils in three ways: 1.

The Deterioration of Agronomical Traits of the Continuous Cropping of Stevia Is Associated With the Dynamics of Soil Bacterial Community.

Bertoni is grown worldwide as an important, natural sweetener resource plant. The yield of steviol glycosides (SVglys) is greatly influenced by continuous cropping. In this study, we collected the roots, rhizosphere soils, and bulk soils from 2 years of continuous cropping (Y2) and 8 years of continuous cropping (Y8).

[Effects of reducing chemical fertilizers combined with organic fertilizers on soil microbial community in litchi orchards].

Organic fertilizer application can replace a part of chemical fertilizer (CF) to improve the quality and efficiency of litchi production. To further explore the soil microbiological mechanism, with 19-year-old 'Feizixiao' litchi trees as the research objects, we examined the effects of two consecutive years of reduced CF applications (average 21.5% of total nutrients) combined with sheep manure (OF) and bio-organic fertilizers (BIO) on soil microbial diversity, community composition and differential microorganisms.

Organic amendments alleviate early defoliation and increase fruit yield by altering assembly patterns and of microbial communities and enzymatic activities in sandy pear (Pyrus pyrifolia).

Severe early defoliation has become an important factor restricting the development of the pear industry in southern China. However, the assembly patterns of microbial communities and their functional activities in response to the application of bioorganic fertilizer (BIO) or humic acid (HA) in southern China's pear orchards remain poorly understood, particularly the impact on the early defoliation of the trees. We conducted a 3-year field experiment (2017-2019) in an 18-year-old 'Cuiguan' pear orchard.