Organic fertilization to attenuate water salinity effect on papaya growth

Sousa, Mônica S. da S.; Lima, Vera L. A. de; Brito, Marcos E. B.; Silva, Luderlândio de A.; Moreira, Rômulo C. L.; Oliveira, Carlos J. A.

doi:10.1590/1807-1929/agriambi.v23n2p79-83

Acessibilidade / Reportar erro

Brasil

Revista Brasileira de Engenharia Agrícola e Ambiental

Español English

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

ARTICLES • Rev. bras. eng. agríc. ambient. 23 (2) • Feb 2019 • https://doi.org/10.1590/1807-1929/agriambi.v23n2p79-83 copy

Organic fertilization to attenuate water salinity effect on papaya growth

Adubação orgânica como atenuante da salinidade da água no crescimento do mamoeiro

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The salinity of water and soil reduces the growth and production of crops, especially the fruit trees, such as papaya. Thus, it is necessary to obtain management alternatives for cultivation under these conditions. Therefore, the objective of this study was to evaluate the growth and phytomass of papaya cultivated under irrigation with saline water and organic fertilization. An experiment was set up using a randomized block design, with the treatments distributed in a 5 x 2 factorial scheme, consisting of five levels of salinity of irrigation water (0.6, 1.2, 1.8, 2.4 and 3.0 dS m^-1) and two levels of organic fertilization (10 and 20 L of bovine manure per plant), with three replications, totaling thirty experimental plots. Growth variables of papaya were evaluated. Papaya plants were negatively affected by irrigation water salinity, with a greater effect on the number of leaves and on dry phytomass of leaves, with no effect of bovine manure levels.

Key words:
Carica papaya; saline stress; organic matter

	pHsp CaCl₂	ECse (dS m^-1)	P (mg dm^-3)	N (%)	K	Na	Ca	Mg	SB	T	OM (g kg^-1)
	pHsp CaCl₂	ECse (dS m^-1)	P (mg dm^-3)	N (%)	(cmol_c dm^-3)						OM (g kg^-1)
Soil + 10 L	7.49	1.03	725	0.48	0.75	0.28	3.8	3.1	7.65	10.15	8.3
Soil + 20 L	8.05	1.40	739	0.48	1.46	0.45	3.7	2.8	7.96	8.41	8.3

Sources of variation	DF	Mean square
Sources of variation	DF	PH	SD	NL	RGR-PH	RGR-SD
SAL	4	0.0066^ns	32.164^ns	17.312*	0.000000088^ns	0.000005*
ML	1	0.0009^ns	95.729^ns	2.408^ns	0.000000073^ns	0.00000026^ns
SAL x ML	4	0.0156^ns	55.502^ns	2.345^ns	0.000000043^ns	0.00001^ns
Block	2	0.0001^ns	10.516^ns	2.233^ns	0.000002^ns	0.000002^ns
Error	18	0.0089	39.148	4.307	0.000000067	0.000001
CV (%)		9.01	12.57	17.92	24.86	20.25
Overall mean		1.05	49.78	11.58	0.00033	0.00511

Sources of variation	DF	Mean square
Sources of variation	DF	PDP¹	LDP¹	StDP¹	ShDP¹	PRDP	SRDP¹	RDP	TDP¹	RDP/ShDP
SAL	4	1.612**	3.670**	0.660 ^ns	3.450 ^ns	5.911 ^ns	0.383 ^ns	44.670 ^ns	6.996 ^ns	0.004 ^ns
ML	1	0.209 ^ns	0.413 ^ns	0.226 ^ns	0.880 ^ns	13.068 ^ns	0.180 ^ns	47.502 ^ns	2.070 ^ns	0.0003 ^ns
SAL x ML	4	0.170 ^ns	0.616 ^ns	0.520 ^ns	0.609 ^ns	34.827 ^ns	0.188 ^ns	84.512 ^ns	1.578 ^ns	0.003 ^ns
Block	2	0.715 ^ns	0.078 ^ns	1.688 ^ns	2.021 ^ns	39.749 ^ns	0.575 ^ns	99.967 ^ns	4.857 ^ns	0.0004 ^ns
Error	18	0.296	0.466	1.465	1.888	16.884	0.320	50.399	3.817	0.006
CV (%)		18.38	13.42	15.64	14.08	20.32	15.64	21.10	13.06	21.69
Overall mean		2.96	5.08	7.73	9.75	20.22	3.62	33.64	14.96	0.35

Unidade Acadêmica de Engenharia Agrícola Unidade Acadêmica de Engenharia Agrícola, UFCG, Av. Aprígio Veloso 882, Bodocongó, Bloco CM, 1º andar, CEP 58429-140, Campina Grande, PB, Brasil, Tel. +55 83 2101 1056 - Campina Grande - PB - Brazil
E-mail: revistagriambi@gmail.com

Acompanhe os números deste periódico no seu leitor de RSS

[1] moni_shirley@hotmail.com (Corresponding author)