Yield and nutrition of tomato using different nutrient sources

Abstract

The effect of alternative sources of nutrients was evaluated on yield, nutrition and fruit quality of tomato cv Santa Clara in an agro ecological system, under natural conditions in Montes Claros, Minas Gerais State, Brazil. The experimental design was of completely randomized blocks with seven treatments and four replications, using eight plants per experimental plot. The treatments comprised of 1) conventional fertilization with NPK; 2) organic compost + natural phosphate + rock dust, applied separately; 3) organic compost produced from the addition of natural phosphate and rock dust + green manure; 4) organic compost produced from the addition of rock dust + natural phosphate + green manure; 5) organic compost produced from the addition of natural phosphate and rock dust + green manure; 6) natural phosphate + rock dust; and 7) organic compost + natural phosphate + rock dust + green manure. The highest production was obtained using chemical fertilizers. There was no difference among the treatments regarding the content of foliar nutrients and fruit diameter, pH and total soluble solids. The use of mineral and organic fertilizers significantly reduced the incidence of soft rot and pests in comparison to the use of chemical fertilizers.

The Optimization of Nitrogen Fertilization Regulates Crop Performance and Quality of Processing Tomato (Solanum lycopersicum L. cv. Heinz 3402)

“…Moreover, similarly to in our study, Parisi et al [59] did not observe any statistical differences in titratable acidity between different rates of nitrogen fertilization, although they reported significant differences in the TSS content ( • Brix), which varied from 4.85 to 5.31. On the contrary, Zuba et al [60], who investigated the yield and nutrition of tomato under different nutrient sources did not observe significant differences in the TSS content ( • Brix), whereas Abu-Alrub et al [61] observed a significant variation in fruit juice EC values as also reported in our study. Regarding fruit firmness, according to the results of Kalbani et al [62], who estimated the effects of some organic fertilizers on the growth, yield and quality of tomato, a significant effect of nutrient source on fruit firmness was observed, while similar results were reported by Bilalis et al [25].…”

Response Of Growth, Yield And Fruit Quality Of Tomato (Solanum Lycopersicum L.) To Different Organic Fertilizer Treatments Under Two Pest Control Programs Against Tuta Absoluta In a New Valley-Egypt

“…Moreover, probably, in the most demanding stage of tomato crop, organic manures did not provide the nutrients, especially N, P, K in the same amounts of the chemical fertilizers. The transformation of organic nitrogen in ammonia and nitrate, which are forms absorbed by plants is slow and cannot meet the needs of the plants during the greater nutritional requirement stage, explaining, perhaps the lower yield of organic treatments (Zuba et al, 2011).…”

Solanaceas in organic system in Brazil: tomato, potato and cape gooseberry

“…A abundância de nematoides predadores é maior em sistemas orgânicos que convencionais. Zuba et al (2011) apontam que o uso de adubos orgânicos desfavorece a incidência de podridão bacteriana ocasionada por Ralstonia solanacearum (Smith, 1896). Mesmo com gargalos associados a propagação, cultivares e manejo nutricional, fitossanitário e hídrico, as produtividades de plantas de tomate em sistema orgânico são muito semelhantes às encontradas em sistemas convencionais.…”