Yield of tomato according to nitrogen fertilization
Abstract: The objective of this study was to evaluate the influence of N doses on yield and quality of tomato fruits in a notill system. The research was carried out at field conditions in Epagri - Experimental Station of Caçador, SC, Brazil, during the growing seasons 2006/07 and 2007/08. The treat...
| Authors: | , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2017 |
| Country: | Brasil |
| Institution: | Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri) |
| Repository: | Agropecuária Catarinense (Online) |
| Language: | Portuguese |
| OAI Identifier: | oai:ojs2.10.20.5.244:article/186 |
| Online Access: | https://publicacoes.epagri.sc.gov.br/rac/article/view/186 |
| Access Level: | Open access |
| Keyword: | Solanum lycopersicum L. fertilization of tomato plant nutrition. adubação de tomateiro nutrição de plantas |
| Summary: | Abstract: The objective of this study was to evaluate the influence of N doses on yield and quality of tomato fruits in a notill system. The research was carried out at field conditions in Epagri - Experimental Station of Caçador, SC, Brazil, during the growing seasons 2006/07 and 2007/08. The treatments were set in a CRB design, with four replications. Treatments were six doses of N, as ammonium nitrate, being 0, 125, 250, 375, 500 and 625 kg ha-1 in 2006/07 and for 2007/08 to 0, 150, 300, 450, 600 e 750 kg ha-1 in 2007/08. The total, commercial, extra AA and extra A, tomato yields followed a quadratic model in response to N rates in the 2006/07 crop. However in 2007/08 there was a linear effect. The maximum technical efficiency (MTE) and maximum economic efficiency (MEE) for commercial fruit yield in 2006/07 crop were obtained with N rates of 555 and 546 kg ha-1. For the average mass of extra AA fruits; commercial fruit production in relation to total production and; production of extra AA fruits in relation to commercial production in 2006/07 crop, there was a quadratic fit with increased levels of N applied, and their maximum points with 478, 486 and 557 kg ha-1 N, respectively, that is, next to the doses of MTE and MEE for commercial fruit yield. |
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