Response to the application of thidiazuron on winter bean cultivated in an Oxisol from Savannah

Cardoso, Bruna M.; Bassi, Marco H. M.; Buzo, Fernando S.; Seleguin, César H. A.; Arf, Orivado

doi:10.1590/1807-1929/agriambi.v29n12e292651

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Original Article • Rev. bras. eng. agríc. ambient. 29 (12) • Dec 2025 • https://doi.org/10.1590/1807-1929/agriambi.v29n12e292651 linkcopy

Response to the application of thidiazuron on winter bean cultivated in an Oxisol from Savannah¹

Resposta à aplicação do thidiazuron no feijão de inverno cultivado em Latossolo do Cerrado

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Common bean (Phaseolus vulgaris L.) plays a significant socio-economic role in Brazil. The application of management tools in agriculture, including plant growth regulators, can enhance productivity while also benefiting the environment and the economy. The objective of this study was to evaluate the effects of foliar application of the plant growth regulator thidiazuron, at doses and application times, on production components and foliar nitrogen (N) concentration in bean. The experiment was conducted over two agricultural years at an experimental station located in the municipality of Selvíria, state of Mato Grosso do Sul, Brazil. The experimental design used was a randomized block design with a 4 × 3 factorial scheme, consisting of four doses of thidiazuron (0, 1, 2, and 3 g ha⁻¹) applied at three growth stages, on the first trifoliate leaf (V₃), on the third trifoliate leaf (V_4-5) and at pre-flowering (R₅). The soil of the area was classified as an Oxisol. The cultivars planted were BRS Estilo and IAC Sintonia in the first year and IPR Campos Gerais in the second year. The productivity of the cultivars IAC Sintonia and BRS Estilo increased with application doses up to 1.62 and 2.34 g ha⁻¹ of thidiazuron, respectively. The dose of 1.82 g ha⁻¹ of the growth regulator increased N content in BRS Estilo and there was greater N accumulation in the V_4-5 stage of IAC Sintonia. The application of thidiazuron increased the productivity of the IAC Sintonia and BRS Estilo regardless of the application timing.

Key words:
Phaseolus vulgaris L.; plant growth regulator; productivity; nitrogen; physiological response

HIGHLIGHTS:

The plant growth regulator thidiazuron resulted in greater nitrogen accumulation.

IAC Sintonia was the common bean cultivar that responded best to the plant growth regulator.

The climatic conditions may influence the efficiency of the plant growth regulator.

pH CaCl₂	OM (g dm^-3)	S-SO₄^2-	P	K	Ca	Mg	H+Al	Al	SB	CEC	V (%)	B	Cu	Fe	Mn	Zn
pH CaCl₂	OM (g dm^-3)	(mg dm^-3)		(mmol_c dm^-3)							V (%)	(mg dm^-3)
5.5	22	6	22	4.4	26	20	25	0	50.4	75.4	67	0.15	5.1	16	57.6	0.9

T	BRS Estilo	IAC Sintonia	IPR Campos Gerais	BRS Estilo	IAC Sintonia	IPR Campos Gerais
T	ADM (g per plant)			Leaf Nitrogen (g kg^-1)
Stage
V₃	14.9	15.8 a	14.0	44.3	43.6 ab	50.2
V_4-5	15.2	13.5 b	14.5	43.7	46.4 a	50.6
R₅	15.2	15.7 a	13.3	42.6	43.4 b	48.3
Doses (g ha^-1)
0	14.4	14.3	11.9	41.7	45.1	52.0
1	16.2	15.6	15.0	44.1	43.4	48.3
2	15.7	14.4	14.4	44.8	45.3	47.8
3	14.1	15.7	14.4	43.5	44.1	50.6
F-test
Stage (S)	0.02^ns	7.96**	0.42^ns	2.68^ns	4.03*	1.02^ns
Doses (D)	0.98^ns	2.00^ns	1.93^ns	4.66*	0.83^ns	1.98^ns
S × D	0.16^ns	2.45^ns	0.92^ns	0.60^ns	1.40^ns	0.31^ns
CV (%)	20.26	10.8	21.82	4.22	6.55	9.76

T	BRS Estilo	IAC Sintonia	IPR Campos Gerais	BRS Estilo	IAC Sintonia	IPR Campos Gerais	BRS Estilo	IAC Sintonia	IPR Campos Gerais
T	Pods per plant			Grains per plant			Grains per pod
Stage
V₃	19	24	26	97	120	153	5.0	5.0	6.0
V_4-5	18	23	26	88	115	143	5.0	5.0	6.0
R₅	18	25	24	92	125	143	5.0	5.0	6.0
Doses (g ha^-1)
0	19	20	29	93	102	176	5.0	5.0	6.0
1	17	24	22	87	120	136	5.0	5.0	6.0
2	19	27	24	92	133	127	5.0	5.0	5.0
3	19	24	26	99	124	146	5.0	5.0	5.0
F test
Stage (S)	7.41^ns	0.66^ns	0.29^ns	0.92^ns	0.62^ns	0.26^ns	0.63^ns	0.75^ns	0.64^ns
Doses (D)	18.42^ns	2.98*	1.82^ns	0.88^ns	3.26*	2.60^ns	0.79^ns	0.88^ns	4.41**
S × D	4.29^ns	0.85^ns	0.38^ns	0.67^ns	1.21^ns	0.34^ns	0.43^ns	1.35^ns	0.98^ns
CV (%)	18.56	22.67	30.56	19.61	21.00	31.40	6.25	4.86	9.02

T	BRS Estilo	IAC Sintonia	IPR Campos Gerais	BRS Estilo	IAC Sintonia	IPR Campos Gerais
T	100-grain weight (g)			Grain yield (kg ha^-1)
Stage
V₃	30	29	25	3513	3791	4387
V_4-5	31	28	26	3473	3647	4421
R₅	30	28	25	3432	3664	4472
Doses (g ha^-1)
0	31	28	26	3468	3235	4685
1	31	28	25	3667	3985	4152
2	30	29	24	3537	3631	4387
3	30	29	25	3219	3952	4482
F-test
Stage (S)	0.08^ns	0.91^ns	1.89^ns	0.17^ns	0.32^ns	0.05^ns
Doses (D)	0.12^ns	0.94^ns	0.82**	2.85*	4.83**	0.99^ns
S × D	0.28^ns	2.04^ns	0.46^ns	0.31^ns	0.70^ns	0.05^ns
CV (%)	4.52	2.75	3.8	11.12	12.87	17.34

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Unidade Acadêmica de Engenharia Agrícola Unidade Acadêmica de Engenharia Agrícola, UFCG, Av. Aprígio Veloso 882, Bodocongó, Bloco CM, 1º andar, CEP 58429-140, Tel. +55 83 2101 1056 - Campina Grande - PB - Brazil
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[TFN1] OM - Organic matter; S-SO₄ ^2- - Extractable sulfur; P - Phosphorus; K - Potassium; Ca - Calcium; Mg - Magnesium; H+Al - Hydrogen + Aluminum (exchangeable acidity); SB - Sum of bases; CEC - Cation exchange capacity; V% - Base saturation; B - Boron; Cu - Copper; Fe - Iron; Mn - Manganese; Zn - Zinc. Extraction methods - P - Resin; B - Hot water; Cu, Fe, Mn, and Zn - DTPA

Response to the application of thidiazuron on winter bean cultivated in an Oxisol from Savannah1

Resposta à aplicação do thidiazuron no feijão de inverno cultivado em Latossolo do Cerrado

ABSTRACT

HIGHLIGHTS:

Response to the application of thidiazuron on winter bean cultivated in an Oxisol from Savannah¹