Nutritional status of jatropha under cattle manure and natural phosphate in rainfed conditions

Lima, Rosiane L. S. de; Azevedo, Carlos A. V. de; Gheyi, Hans R.; Carvalho Júnior, Genelicio S.; Cazetta, Jairo O.; Arriel, Nair H. C.

doi:10.1590/1807-1929/agriambi.v19n11p1028-1034

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Manejo de Solo, Água e Planta • Rev. bras. eng. agríc. ambient. 19 (11) • Nov 2015 • https://doi.org/10.1590/1807-1929/agriambi.v19n11p1028-1034 copy

Nutritional status of jatropha under cattle manure and natural phosphate in rainfed conditions

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

There is little information on the technical recommendation of fertilization for jatropha in the semi-arid region. This study aimed to evaluate the nutritional status of jatropha plants fertilized with cattle manure and natural phosphate under rainfed conditions. The experiment was set in a randomized block design, with three replicates, arranged in a 4 x 4 factorial scheme, corresponding to 4 doses of cattle manure (0, 4, 8 and 12 t ha^-1) and 4 doses of natural phosphate (0, 250, 500 and 750 kg ha^-1). The application of 8 t ha^-1 of cattle manure, in isolation or associated with 500 kg ha^-1 of natural phosphate, promotes adequate conditions to obtain jatropha plants with sufficient levels (g kg^-1) of N (29.8), P (5.1), K (33.8), Ca (17.1), Mg (14.0) and S (2.6) and micronutrients (Cu = 8.0 and Mn = 94.4 mg kg^-1) in its leaf tissue.

Key words:
Jatropha curcas L.; alternative sources of fertilizer; mineral nutrition

Sorption complex
pH 1:2.5	Ca²⁺	Mg²⁺	Na⁺	K⁺	SB	H + Al	T	V %	P mg dm^-3	OM g kg^-1
pH 1:2.5	mmol_c dm^-3							V %	P mg dm^-3	OM g kg^-1
7.7	31.1	18.2	2.8	6.1	58.2	0.0	58.2	100	51.3	14.7

Source of variation	Mean square
Source of variation	DF	N	P	K	Ca	Mg	S
Cattle manure (CM)	3	448.3^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom	1.4*	105.7*	7.3^ns ns Not significant;	2.1^ns ns Not significant;	0.2^ns ns Not significant;
Natural phosphate (NP)	3	10.9*	6.3^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom	80.2*	41.9^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom	6.4^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom	0.5^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom
Blocks	2	4.9^ns ns Not significant;	5.4^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom	94.2*	3.7^ns ns Not significant;	4.6*	0.1^ns ns Not significant;
CM x NP	9	8.8*	0.6ns	68.1*	12.4*	4.3^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom	0.2*
Residue	30	3.1	0.4	27.04	4.6	1.2	0.1
CV%	-	7.05	14.03	15.38	13.48	8.64	14.99

Source of variation	Mean square
Source of variation	DF	Cu	Fe	Mn	Zn
Cattle manure (CM)	3	0.9^ns ns Not significant,	754.9^ns ns Not significant,	1112.9^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom	2.5^ns ns Not significant,
Natural phosphate (NP)	3	11.4^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom	824.5^ns ns Not significant,	136.9^ns ns Not significant,	35.3^ns ns Not significant,
Blocks	2	2^ns ns Not significant,	5735.7^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom	21.8^ns ns Not significant,	52*
CM x NP	9	3.2^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom	1133.5^ns ns Not significant,	837.6^ Significant at 0.01 probability level; CV – Coefficient of variation; DF – Degrees of freedom	9.4^ns ns Not significant,
Residue	30	1.04	778.4	92.1	11.9
CV%	-	17.21	15.39	12.03	17.38

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[1] limarosiane@yahoo.com.br (Autora correspondente)