Open AccessBIOMASS AND LEAF CHLOROPHYLL IN OITICICA SEEDLINGS UNDER WATER SALINITY IRRIGATON AND ORGANIC COMPOUND ADDITION
Author(s) -
Alian Cássio Pereira Cavalcante,
Manoel Alexandre Diniz Neto,
Lourival Ferreira Cavalcante,
Antônio Gustavo de Luna Souto,
Adailza Guilherme Cavalcante,
Belísia Lúcia Moreira Toscano Diniz
Publication year - 2020
Publication title -
floresta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.386
H-Index - 13
eISSN - 1982-4688
pISSN - 0015-3826
DOI - 10.5380/rf.v50i2.59627
Subject(s) - salinity , saline water , irrigation , biomass (ecology) , soil salinity , horticulture , agronomy , seedling , chlorophyll , chemistry , biology , ecology
Salt-compromised agricultural areas in the semi-arid regions of the Brazilian Northeast, have increased due to the use of water with high saline concentration as the only water supply available to plants, damaging the quality of the seedlings and the productive yield of the crops. One way to alleviate the detrimental effects of salts is the addition of organic compound to the substrate as a way to attenuate the action of water and soil salinity on biomass formation and chlorophyllactic activity in seedlings and adult plants of forest species, including Licania rigida Benth, the Oiticica. In view of this issue, the objective of this study was to evaluate the effects of water salinity irrigation and of the addition of an organic compound obtained by fermentation of castor bean (Ricinus communis) and cattle manure on biomass accumulation and chlorophyll indices in Oiticica seedlings. The experiment was carried out in a 4 × 2 factorial scheme in randomized blocks, with five replications and two seedlings per plot, relative to the proportions of organic compost - C and soil - S (0C: 1S, 1C: 1S, 2C: 1S, 3C: 1S) and irrigation of the seedlings with non-saline (0.5 dS m-1) and saline (4.5 dS m-1) water. The increase of organic compound in the substrate in proportion to the soil of 3: 1 surpassed by 42.9% the biomass of the aerial part of the Oiticica seedlings irrigated with saline water. The results indicate that the organic compound mitigates, though does not eliminate, the detrimental effects of water salinity irrigation on the biomass formation and chlorophyllactic indexes of the seedlings