Performance and selection of tomato cultivars for organic cultivation in greenhouse

Abstract

Production of tomato fruits in organic systems has difficulties such as the use of adequate cultivars. The hypothesis is that organic cultivation has strength dependency of the selection of appropriate genotypes to increase the economic viability of fruit production. The present work aimed to test and obtain, under organic greenhouse system, cultivars of tomato with good fruit productivity. Tomato cultivars, hybrids and non-hybrids, were evaluated with undetermined (tutoring and stripping) and determined growth habit (free growth). In the first cultivation, we observed symptoms of nutritional deficiency in fruiting stage of tomato plants, resulting in very low productivity of fruits, with maximum of 1.8 kg/plant for the Serato hybrid. In the second year of cultivation, the additions and increases in fertilizing management increased the fruit productivity in all cultivars-in Serato, to 3.1 kg/plant, and in Predador, to 2.8 kg/plant. The hybrid Candieiro, with determined habit growth, resulted in 2.0 kg/plant of fruits. The use of hybrids with genetic resistance to some important pests and diseases, associated with increases and adequate fertilizing management, were primordial factors to increase fruit productivity in tomato under organic systems in greenhouse.

Zucchini squash production in conventional and organic cultivation systems

“…The values in the same column followed by the same letter are not significantly different at P<0.05 (Tukey's test). cultivars was beneficial to the organic system, being superior to nonhybrids (Santa Rosa et al, 2019) as normally occurs in conventional cultivation systems. Observation of consumer expectations on food quality presents the base for any successful food pro duction system and marketing scheme.…”

Morphological, Leaf Nutrient, and Fruit Quality Characteristics of Diverse Tomato Cultivars under Organic Low-Input Management

“…The tomato fruit is a valuable source of minerals and vitamins necessary in the human diet [2]. At the same time, the demand for organically grown tomatoes has also increased [3], driven by consumer perception that organic food is more sustainable and of better quality than food derived from conventional farming [4]. However, there is a lack of tomato cultivars bred for organic production that are both high-yielding and of superior fruit quality [5].…”

Performance of organic and conventional crop varieties and species mixtures under stress

“…Combining our results with previous findings from e.g., Santa Rosa et al (2019), we highlight that increasing the diversity of crop varieties for vegetables supports resilient and sustainable vegetable cultivation. The greater the supply of genetic diversity in the form of different varieties, the greater the opportunities for farmers to adapt to their local climatic and environmental conditions.…”

“…They highlighted that for low-input systems the farmers' choice should not be between hybrids or open-pollinated varieties, but rather the most appropriate choice for the local growing conditions. Furthermore, hybrids which are more productive and resistant can thereby increase the economic output of organic tomato cultivation (Santa Rosa et al, 2019).…”