2004
DOI: 10.1590/s0103-90162004000300002
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Abstract: Among several alternative agricultural systems have been developed, organic agriculture has deserved increasing interest from. The objective of this paper was comparing both organic (OS) and conventional (CS) tomato cropping systems for varieties Débora and Santa Clara, through an interdisciplinary study. The experiment was set up in a randomized blocks design with six replicates, in a dystrophic Ultisol plots measuring 25 × 17 m. Cropping procedures followed by either local conventional or organic growers pra… Show more

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Cited by 40 publications
(22 citation statements)
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“…However, the results were also significantly influenced by the predator-prey ratios; and at some ratios, no preference was observed (Shrestha & Enkegaard 2013). Although this result indicated an apparent weak interaction between C. carnea and thrips, survey results have shown that members of the genus Chrysoperla are frequently present on plants of different species containing thrips (Bettiol et al 2004;Mann et al 2010;Saeidi & Adam 2011), encouraging studies to evaluate the probable interaction dynamics between these species. Unfortunately, the lack of studies investigating possible interactions between populations of C. externa and E. flavens make any specific comment about the interaction strength between them impossible.…”
Section: Resultsmentioning
confidence: 92%
“…However, the results were also significantly influenced by the predator-prey ratios; and at some ratios, no preference was observed (Shrestha & Enkegaard 2013). Although this result indicated an apparent weak interaction between C. carnea and thrips, survey results have shown that members of the genus Chrysoperla are frequently present on plants of different species containing thrips (Bettiol et al 2004;Mann et al 2010;Saeidi & Adam 2011), encouraging studies to evaluate the probable interaction dynamics between these species. Unfortunately, the lack of studies investigating possible interactions between populations of C. externa and E. flavens make any specific comment about the interaction strength between them impossible.…”
Section: Resultsmentioning
confidence: 92%
“…Wamser et al (2012) studied the productivity of tomato hybrids in super-high-density cultivation fields (44,444 plants ha -1 ), reporting a maximum yield of 170.7 t ha -1 , whereas in traditional cultivation (22,222 plants ha -1 ), the maximum yield was 128.5 t ha -1 . Assuming that the proportion of 36.5 % proposed by Bettiol et al (2004) is correct, yields of 62.2 and 46.9 t ha -1 should be expected for super-dense and traditional cultivation, respectively, under an organic cultivation system. Therefore, the maximum yield obtained in the present work, 53 t ha -1 , falls in the expected range for organic system.…”
Section: Cultivation Of Tomatoes From Seedlings Grown On Substrates Bmentioning
confidence: 99%
“…The maximum production (53 t ha -1 ) was obtained when treating with 100 % SASC resulting in a yield of 1.43 kg of tomatoes per plant. When comparing organic and conventional cultivation, Bettiol et al (2004) concluded that organic farming production corresponds to only 36.5 % of conventional production. Wamser et al (2012) studied the productivity of tomato hybrids in super-high-density cultivation fields (44,444 plants ha -1 ), reporting a maximum yield of 170.7 t ha -1 , whereas in traditional cultivation (22,222 plants ha -1 ), the maximum yield was 128.5 t ha -1 .…”
Section: Cultivation Of Tomatoes From Seedlings Grown On Substrates Bmentioning
confidence: 99%
“…Tomato requires large quantities of mineral nutrients, which are supplied by synthetic fertilizers in conventional cultivation, http://dx.doi.org/10.1016/j.scienta.2015.04.027 0304-4238/© 2015 Elsevier B.V. All rights reserved. while in organic cropping only organic fertilizers are permitted (Bettiol et al, 2004;De Ponti et al, 2012). There are few studies on the crop physiology of processing tomato cultivated in organic vs. conventional systems, probably because a correct comparison between organic and conventional cropping systems entails plants being cultivated in similar soils and under similar climatic conditions.…”
Section: Introductionmentioning
confidence: 99%
“…Creamer et al (1996) reported that conventional systems produce more dry matter than organic systems. Moreover, Bettiol et al (2004), De Ponti et al (2012, Murphy et al (2007) and Seufert et al (2012) reported that organic crop yield is lower than conventional. Dry matter production during cultivation depends on several physiological processes (as photosynthesis, respiration, and translocation) evaluated with parameters such as net assimilation (A), intercellular CO 2 concentration (Ci), transpiration (E), stomatal conductance (gs) and water use efficiency (WUE).…”
Section: Introductionmentioning
confidence: 99%