| Title |
Operational Group VALORARES: influence of agroindustry waste compost and compost tea on processing tomato crop |
| ID_Doc |
25267 |
| Authors |
Zajara, L; Trinidad, S; Ordiales, E; Gutiérrrez-Cabanillas, JI; Gil, J; Núñez, F; Llerena-Ruiz, JL |
| Title |
Operational Group VALORARES: influence of agroindustry waste compost and compost tea on processing tomato crop |
| Year |
2022 |
| Published |
|
| DOI |
10.17660/ActaHortic.2022.1351.13 |
| Abstract |
Trial developed by the Operative Group VALORARES from compost and tea compost produced during the project "Valorisation and use of by-products generated in the agri-food sector of Extremadura through composting". The objectives were to demonstrate the quality of the products obtained by evaluating the agronomic and technological behavior of processing tomatoes, in order to reduce the need for synthetic fertilisers by rationalising fertilization, to demonstrate the efficiency of compost tea as an alternative to synthetic pesticides and, finally, to preserve and improve the fertility of agricultural soils. Once the soil characterized, nutritional requirements of the crop were calculated using REDAFEX, a fertiliser advice tool developed by the Regional Government of Extremadura in collaboration with CTAEX. Afterwards, corresponding fertilising programs were designed. So, six out of the seven theses studied varied in the basal dressing composition, requiring 48 fertilizer units (UF) of nitrogen, 90 UF of phosphorus and 220 UF of potassium. The theses consisted, compared to conventional fertilization, in substitution of 50, 75 and 100% of nitrogenous needs with the contribution of compost, in reducing 25% of the synthetic nitrogen requirement by providing up to 60 UF of nitrogen with the addition of compost and, finally, in maintaining the conventional fertilizer with the addition of compost up to 72 UF of nitrogen. The seventh thesis consisted of the weekly contribution of compost tea by foliar application. The analysis of the results showed an increase of 9% in acceptable raw material which means an increase of 11 t ha(-1) in gross yield, when complementing conventional fertilization with compost at 1300 kg ha(-1). The weekly application of compost tea led to an increase of yield of 7 t ha(-1). |
| Author Keywords |
composting; compost tea; agri-food residues valorisation; circular economy; sustainability |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Conference Proceedings Citation Index - Science (CPCI-S) |
| EID |
WOS:001073797300014 |
| WoS Category |
Agricultural Engineering; Agriculture, Multidisciplinary; Horticulture |
| Research Area |
Agriculture |
| PDF |
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