Soil attributes in systems agroecological and conventional irrigated cropping systems in Rio Grande do Norte Semiarid, Brazil
Journal Title: Revista Verde de Agroecologia e Desenvolvimento Sustentável - Year 2018, Vol 13, Issue 2
Abstract
The sustainability of irrigated agricultural systems in semiarid region is based on the maintenance of its production capacity. The objective of this work was to evaluate soil quality in agroecological and conventional irrigated areas, located in the community of Sombras Grandes, Caraúbas, Rio Grande do Norte. Simple soil samples were collected (at 0-20 cm and 20- 40 cm depths) from 2009 to 2012. The quality indicators used were: physical: Bulk density (Bd), Total Porosity (TP), Penetration Resistance (PR), relation of available water soil and total porosity (AWS/TP), relation of MR/TP, Flocculation Degree (FD) and Clay dispersed in water (CDW); chemicals: Hidrogen potential (pH), Phosphorus (P), Cation Exchange Capacity (CEC), Bases Saturation (V), Base Sum (BS), Total Organic Carbon (TOC), Carbon Stock (CS), Calcium (Ca+2), Magnesium (Mg+2), Potassium (K+ ), Sodium (Na+ ), Exchangeable Sodium Percentage (ESP) and Electric Condutivity (EC). The nonparametric Kruskal Wallis, Pearson's correlation and principal component analysis were used to evaluate soil quality. BS showed significant positive difference in agroecological area with V, TOC and CEC and in conventional area with V and CEC. The Bd, TP, CDW and FD, TOC and Al+H differed significantly and the best soil quality results were found in the agroecological area (0-20 cm). Ca+2, Mg+2, K+ , CEC, P and BS were not different and the high values recorded maintained soil fertility in both areas studied. The soil productive capacity in area agroecological was maintained, without the need for chemical fertilizer.
Authors and Affiliations
Fábio dos Santos Santiago, Suzana Maria Gico Lima Montenegro, Maria Rafaela de Almeida Pinheiro
Keywords
Related Articles
- EP ID EP401746
- DOI 10.18378/rvads.v13i2.5335
- Views 88
- Downloads 0
Environmental perception of the use of agroforestry systems in recovering of forest reserves in Cametá, Pará, Brazil
This paper analyzes the environmental perception of the use of agroforestry systems in the recovery of legal reserve in Cametá-PA, proposing the discussion between the profile of properties, environmental perception of t...
Soil attributes in systems agroecological and conventional irrigated cropping systems in Rio Grande do Norte Semiarid, Brazil
The sustainability of irrigated agricultural systems in semiarid region is based on the maintenance of its production capacity. The objective of this work was to evaluate soil quality in agroecological and conventional i...
Development and growth of tomato seedlings under efect of Ascophyllum nodosum extract
In the production phase of tomato seedlings, the use of Ascophyllum nodosum seaweed extract can become an organic viable alternative in agriculture, as an alternative biofertilizer, stimulating through its compounds the...
Effect of weed management practices on cowpea production
The cowpea stands out among the annual crops in the Northeast region for its productive potential and nutritional value. However, it has been showing productivity below its true productive potential, due to the severe in...
Productivity of organic Cichorium intybus produced with alternative substrates
The objective of this work was to evaluate alternative substrates in the quality of seedlings and in the productivity of chicory in organic cultivation. The experiment conducted in two phases: plant nursery and field, in...