CULTIVO DE <i>Caesalpinia pulcherrima</i> L. Sw. EM SUBSTRATOS REGIONAIS

Moreira, Flávia Mélo; Nóbrega, Rafaela Simão Abrahão; Santos, Ronaldo Pedreira dos; Silva, Caeline Castor da; Nóbrega, Júlio César Azevedo

RESUMO

Objetivou-se avaliar tipos e proporções de resíduos orgânicos e classes de solo para formulação de substrato para cultivo de Caesalpinia pulcherrima. O experimento foi conduzido em casa de vegetação, sendo os tratamentos arranjados e constituídos por duas classes de solo (Latossolo e Neossolo), três tipos de resíduos (composto orgânico de poda + esterco animal, composto de lixo urbano e resíduo da extração de fibras de Agave sisalana) e cinco proporções resíduo:solo (0:100, 20:80, 40:60, 60:40, 80:20, v/v). Após 90 dias da semeadura, foram realizadas as seguintes avaliações: altura, diâmetro, número de folhas, índices de clorofila a, b e total, área foliar, comprimento radicular, massa seca das partes aérea e raiz e suas relações, e o Índice de Qualidade de Dickson. Os resíduos orgânicos, composto orgânico de poda de árvores + esterco animal, composto de lixo urbano e resíduo da extração de fibras de Agave sisalana apresentaram potencial para serem utilizados na elaboração de substratos de cultivo para a produção de mudas de C. pulcherrima L. Sw. Os substratos formulados com 33%, 23% ou 5% de composto orgânico de poda de árvores + esterco animal ou composto de lixo urbano ou resíduo da extração de fibras de Agave sisalana, respectivamente, promoveram melhor qualidade das mudas aos 90 dias após a semeadura, independente da classe de solo.

Palavras-Chave:
Qualidade de mudas; Resíduo da extração de fibras de Agave sisalana; Índice de clorofila

[1] *Corresponding author.

Chemical and physical attributes	COP		CLU		RES
	Dry	Moist	Dry	Moist	Dry	Moist
pH (H₂o)¹ 1 The values of pH(CACl2) were estimated by the equation: pHCaC12=0.12+0.89pHH2O.	-	7.0	-	7.4	-	9.6
pH (CaCl₂ 0.01 M)	-	6.4	-	6.7	-	8.7
Density (g cm^-3)	-	1.00	-	0.74	-	0.20
Moisture at 60 - 65ºC (%)	-	12.03	-	16.55	-	41.53
Moisture at 110ºC (%)	-	0.69	-	2.36	-	3.53
Organic Matter (combustion) (%)	12.10	10.64	22.25	18.57	54.23	31.71
Organic Carbon (%)	5.99	5.27	11.05	9.22	28.34	16.57
Total mineral residue (T.M.R.) (%)	87.12	76.64	74.92	62.52	39.75	23.24
Nitrogen total (NT) (%)	0.70	0.62	2.12	1.77	2.51	1. 47
Phosphorus (P₂O₅) total (%)	0.23	0.20	0.86	0.72	3.51	2.05
Potassium (K₂O) total (%)	0.25	0.22	0.32	0.27	1.27	0.74
Calcium (Ca) total (%)	0.57	0.50	1.76	1.47	8.50	4. 97
Magnesium (Mg) total (%)	0.13	0.11	0.14	0.12	1.68	0.98
Sulfur (S) total (%)	0.02	0.02	0.25	0.21	0.19	0.11
C/N ratio	-	9	-	5	-	11
Copper (Cu) (mg kg^-1)	15	13	20	17	92	54
Manganese (Mn) (mg kg^-1)	127	112	97	81	137	80
Zinc (Zn) (mg kg^-1)	35	31	53	44	109	64
Boron (B) (mg kg^-1)	234	206	14	12	17	10
Sodium (Na) (mg kg^-1)	824	725	2214	1848	414	242

S.V.	D.F	Mean squares
		H	D	H/D	NL	LA	CLA	CLB
Soil (S)	1	15.03^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.00^ns ns non-significant;	292.65^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	21.85^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	7.91^* *.** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	465.43^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	137.79^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.
Residue (R)	2	19.14^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.01^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	465.79^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	10.19^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	13.39^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	351.17^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	28.09^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.
Proportion(P)	4	35.22^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.03^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	610.66^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	19.81^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	13.72^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	282.03^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	27.58^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.
S x R	2	1.79^ns ns non-significant;	0.00^ns ns non-significant;	19.71^ns ns non-significant;	0.26^ns ns non-significant;	1.22^ns ns non-significant;	161.34^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	39.70^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.
S x P	4	4.01^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.00^ns ns non-significant;	41.42^ns ns non-significant;	1.40^* *.** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	4.16^* *.** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	64.62^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	21.06^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.
R x P	8	3.23^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.00^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	84.65^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	2.27^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	5.05^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	51.79^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	9.356^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.
S x R x P	8	1.85^ns ns non-significant;	0.00^ns ns non-significant;	43.57^ns ns non-significant;	0.54^ns ns non-significant;	0.77^ns ns non-significant;	19.17^ns ns non-significant;	5.91^* *.** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.
CV (%)		10.80	13.02	14.79	21.03	27.51	22.97	33.15
S.V	D.F.	Mean squares
		CLT	RL	DMAP	DMR	DMR/DMAP	H/DMAP	DQI
Soil (S)	1	1109.92^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	36.54^ns ns non-significant;	0.01^ns ns non-significant;	0.05^* *.** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.06^ns ns non-significant;	0.53^ns ns non-significant;	0.00^ns ns non-significant;
Residue (R)	2	577.57^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	1259.48^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.12^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.44^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.63^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	1.92^* *.** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.03^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.
Proportion(P)	4	485.81^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	2327.84^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.52^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.76^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	1.36^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	14.14^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.12^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.
S x R	2	348.38^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	24.84^ns ns non-significant;	0.01^ns ns non-significant;	0.03^* *.** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.03^ns ns non-significant;	0.23^ns ns non-significant;	0.01^ns ns non-significant;
S x P	4	153.80^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	168.92^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.01^ns ns non-significant;	0.02^ns ns non-significant;	0.04^* *.** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.19^ns ns non-significant;	0.00^ns ns non-significant;
R x P	8	100.55^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	136.07^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.06^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.08^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.10^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	1.30^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.01^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.
S x R x P	8	42.97^ns ns non-significant;	51.51^ .*** Significant at 0.05 and 0.01 probability levels, respectively, by the F test.	0.00^ns ns non-significant;	0.01^ns ns non-significant;	0.01^ns ns non-significant;	0.10^ns ns non-significant;	0.00^ns ns non-significant;
CV (%)		21.88	22.15	14.25	19.01	16.07	10.77	11.84

Brasil

Brasil

CULTIVO DE Caesalpinia pulcherrima L. Sw. EM SUBSTRATOS REGIONAIS

RESUMO