Soil microbiological attributes under the cultivation of <i>Pennisetum purpureum</i> genotypes

Silva, Euzanyr Gomes da; Santos, Wellington Leal dos; Oliveira, João Tiago Correia; Rocha, Alexandre Tavares da; Moreira, Keila Aparecida

doi:10.1590/0034-737X2024710027

Acessibilidade / Reportar erro

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

Agricultural Engineering • Rev. Ceres 71 • 2024 • https://doi.org/10.1590/0034-737X2024710027 copy

Soil microbiological attributes under the cultivation of Pennisetum purpureum genotypes¹ 1 The article was extracted from the dissertation of the first author.

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

This study aimed to evaluate the biological quality of soil under the influence of different genotypes of elephant grass in the agreste region, which has a climate that marks the transition between a humid climate with a dry season and the semi-arid climate of the north-eastern hinterland. The study was conducted at the Experimental Farm of the Universidade Federal Rural de Pernambuco, Garanhuns, PE, Brazil. The treatments comprised a combination of two elephant grass cultivars (Elefante B and Mott), two irrigation regimes (with and without irrigation), and two climatic periods (dry and rainy). Biological indicators, microbial biomass carbon, soil basal respiration, metabolic quotient, enzymatic activity of soil β-glucosidase, acid and alkaline phosphatase, arylsulfatase, urease, and the hydrolytic determination of fluorescein diacetate were evaluated. The Mott genotype showed superior results, attributed to the biological indicators studied at different times and irrigation management, even during periods of drought, and Mott grass had significant effects microbial activities. This genotype constitutes one of the alternatives for soil quality in semiarid regions, with advantageous biomass and soil microbial activity, thus presenting the greatest complexity in biological attributes with microorganisms tolerant to climate change.

Keywords
enzymatic activity; bioindicators; soil quality; soil water content; temporal variability

Quarterly	Temperature (ºC)		Precipitation (mm)
Quarterly	Maximum	Minimum	Precipitation (mm)
January - April	28.3	19.2	55.0
May – July	21.5	15.9	300.2
August – October	25.6	17.2	149.7
November - December	31.1	19.9	5.5

Elephant grass genotypes	Rainy
	Irrigated			Non-irrigated
	MBC	SBR	qCO₂	MBC	SBR	qCO₂
Elefante B	13.280Aa^a	7.285Bb^b	2.754Aa^a	8.1365Bb^a	12.274Ba^a	2.007Aa^a
Mott	11.522Aa^b	11.658Ab^b	3.415Aa^a	15.456Aa^b	18.325Aa^a	3.003Aa^a
	Dry
Elefante B	15.834Ba^a	15.687Ba^a	3.302Aa^a	7.619Bb^a	8.020Bb^b	2.337Aa^a
Mott	20.690Aa^a	22.858Aa^a	3.683Aa^a	22.858Aa^a	19.334Aa^a	3.222Aa^a

β-Glucosidase (μg PNG g^-1 solo h^-1)
Elephant grass genotypes	Rainy		Dry
Elephant grass genotypes	Irrigated	Non-irrigated	Irrigated	Non-irrigated
Elefante B	21.710Aa^a	17.280Ab^a	10.897Aa^b	5.900Ab^b
Mott	17.796Ba^a	11.903Ba^a	8.997Aa^b	5.347Ab^b
Acid phosphatese (μg PNP g^-1 solo h^-1)
Elefante B	17.797Aa^a	11.833Ab^a	7.547Ba^b	2.270Ab^b
Mott	4.903Ba^b	2.577Bb^b	10.480Aa^a	4.330Ab^a
Alkaline phosphatase (μg PNP g^-1 solo h^-1)
Elefante B	13.380Aa^a	8.826Ab^a	8.570Aa^b	2.687Ab^b
Mott	10.037Aa^a	8.763Ab^a	7.690Aa^b	2.127Ab^b
Arylsulfatase (μg PNS g^-1 solo h^-1)
Elefante B	19.726Aa^b	12.366Ab^b	37.693Ba^a	18.116Bb^a
Mott	20.216Aa^b	13.263Ab^b	42.763Aa^a	24.396Ab^a
Urease (μg NH₄-N g^-1 solo h^-1)
Elefante B	14.880Bb^b	17.226Ba^b	26.500Ba^a	24.300Bb^a
Mott	18.353Ab^b	21.586Aa^b	29.950Aa^a	26.043Ab^a
FDA (μg hydrolysates g⁻¹ de solo)
Elefante B	28.063Aa^b	27.356Ba^a	45.176Ba^a	23.730Bb^b
Mott	29.286Ab^b	37.733Aa^a	51.750Aa^a	28.350Ab^b

Universidade Federal de Viçosa Av. Peter Henry Rolfs, s/n, 36570-000 Viçosa, Minas Gerais Brasil, Tel./Fax: (55 31) 3612-2078 - Viçosa - MG - Brazil
E-mail: ceres@ufv.br

Acompanhe os números deste periódico no seu leitor de RSS

[1] * Corresponding author: keila.moreira@ufape.edu.br

Brasil

Brasil

Soil microbiological attributes under the cultivation of Pennisetum purpureum genotypes1 1 The article was extracted from the dissertation of the first author.

ABSTRACT

Soil microbiological attributes under the cultivation of Pennisetum purpureum genotypes¹ 1 The article was extracted from the dissertation of the first author.