Single cultivation versus sweet potato and popcorn intercropping: benefits over edaphic fauna in ecological-based system

Redin, Marciel; Canepelle, Eduardo; Writzl, Thaniel Carlson; Silva, Danni Maisa da; Guerra, Divanilde; Drescher, Marta Sandra

doi:10.1590/0034-737X202168050013

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Soil and plant nutrition • Rev. Ceres 68 (5) • Sep-Oct 2021 • https://doi.org/10.1590/0034-737X202168050013 copy

Single cultivation versus sweet potato and popcorn intercropping: benefits over edaphic fauna in ecological-based system¹ This work of research was carried in the Agronomy course at the Universidade Estadual do Rio Grande do Sul - UERGS, Três Passos, Rio Grande do Sul, Brazil.

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The objective of this study was to evaluate the diversity and abundance of edaphic fauna organisms in single and intercropped systems of sweet potato (Ipomoea batatas) and ecologically-based popcorn (Zea mays) in Red Oxisol, in the Northwest region of the state of Rio Grande do Sul, Brazil. Four sweet potato cultivars were used in single systems and intercropped with popcorn: BRS Amélia, BRS Rubissol, BRS Cuia and Crioula. The soil fauna assessment was carried out using PROVID-type traps. Richness, abundance and the dominance indices of Shannon (H’) and Simpson (D) were determined. The orders Coleoptera, Hymenoptera, Collembola and Orthoptera, were dominant in both cultivation systems. The single cultivation showed a greater number of organisms in the orders Isopoda and Collembola, whereas in the intercropped system, the orders Lepidoptera and Hymenoptera stood out. The intercropping cultivation of sweet potato and popcorn shows highest diversity and abundance of soil organisms compared to the single cultivation.

Keywords:
diversity; intercrop system; soil organisms; soil quality

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[1] *Corresponding author: marcielredin@gmail.com

Orders	Treatments									Total
Orders	T1	T2	T3	T4	T5	T6	T7	T8	T9
AC¹	2	4	2	2	1	3	4	3	3	24 C*
AR	4	2	2	0	2	2	8	2	2	24 C
CP	41	41	25	35	28	47	41	32	44	334 A
CL	23	19	8	14	32	12	3	3	9	123 A
CH	0	0	0	0	0	1	0	0	0	1 C
DE	1	4	2	2	2	3	4	4	3	25 C
DP	0	0	0	0	0	0	1	0	0	1 C
HE	2	3	1	0	1	1	2	2	1	13 C
HY	22	24	29	22	20	30	25	32	30	234 A
IS	2	4	2	3	3	3	4	4	3	28 C
IP	1	0	0	1	1	1	0	0	0	4 C
OR	15	21	3	14	8	14	19	6	6	106 B
LP	1	3	2	1	2	1	3	4	3	20 C
DI	2	6	3	5	3	4	3	3	5	34 C
Richness	12 B b	11 C b	11 C a	10 D b	12 B	13 A a	12 B a	11 C a	11 C a
Abundance	116 A b	131 A a	79 D b	99 C b	103 B	122 A a	117 A b	95 C a	109 B a

Indices	Treatments
Indices	T1	T2	T3	T4	T5	T6	T7	T8	T9
H’	0.76 b*	0.83 b	0.75 b	0.77 a	0.78	0.78 a	0.84 a	0.78 a	0.76 a
D	0.21 b	0.18 b	0.24 a	0.21 b	0.21	0.23 a	0.20 a	0.23 a	0.25 a

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Single cultivation versus sweet potato and popcorn intercropping: benefits over edaphic fauna in ecological-based system1 This work of research was carried in the Agronomy course at the Universidade Estadual do Rio Grande do Sul - UERGS, Três Passos, Rio Grande do Sul, Brazil.

ABSTRACT

Single cultivation versus sweet potato and popcorn intercropping: benefits over edaphic fauna in ecological-based system¹ This work of research was carried in the Agronomy course at the Universidade Estadual do Rio Grande do Sul - UERGS, Três Passos, Rio Grande do Sul, Brazil.