Processing tomato is a strategic crop in different countries. However, when cultivated in an organic farming system the marketable yield might be reduced up to 50%. Hence, the objective of this study was to investigate the agronomic performances of eight representative genotypes released since 1930s, showing the traits affecting marketable yield. Open field experiments were conducted in Northern Italy, during spring-summer 2019. The genotype used were "PEARSON", "C33", "UC-82", "E6203", "BRIGADE", "PERFECTPEEL", "H3402", "EVERTON" and "SV1491". The highest marketable yield was recorded by genotype "BRIGADE" (80.0 t ha(-1)) that was followed by "C33" (74.7 t ha(-1)) and "E6203" (72.2 t ha(-1)). The recorded traits showed interesting correlations. As expected, marketable yield was positively correlated with harvest index (0.66) and total yield (0.53), while unripe fruit yield and fruit affected by blossom-end rot were negatively correlated (0.58 and 0.67, respectively). Fruit number per plant was positively (0.52) and negatively (0.64) correlated with harvest index and unripe fruit yield, respectively. Average fruit fresh weight was positively correlated with total yield (0.53), while negatively correlated with harvest index (0.53). Stay green and total shoot fresh weight were positively correlated with unripe fruit yield (0.73 and 0.63, respectively). Total yield was positively correlated with main stem length (0.73), while a negative correlation was found with pH (0.77). Harvest index was negatively correlated with plant height (0.51). Finally, fruit number affected by blossom-end rot was positively correlated with canopy coverage (0.61), while negatively correlated with main stem length (0.48) and SPAD index values (0.52). Considering the overall agronomic performances, low values of shoot fresh weight, plant height, average fruit fresh weight and leaf stay green and high values of fruit number and main stem length, are promising traits to improve marketable yield of processing tomato cultivated in the organic farming system.

Agronomic and morphological traits affecting tomato yield in organic farming system: a preliminary study

Ronga, D.
;
Vitelli, R.;
2022-01-01

Abstract

Processing tomato is a strategic crop in different countries. However, when cultivated in an organic farming system the marketable yield might be reduced up to 50%. Hence, the objective of this study was to investigate the agronomic performances of eight representative genotypes released since 1930s, showing the traits affecting marketable yield. Open field experiments were conducted in Northern Italy, during spring-summer 2019. The genotype used were "PEARSON", "C33", "UC-82", "E6203", "BRIGADE", "PERFECTPEEL", "H3402", "EVERTON" and "SV1491". The highest marketable yield was recorded by genotype "BRIGADE" (80.0 t ha(-1)) that was followed by "C33" (74.7 t ha(-1)) and "E6203" (72.2 t ha(-1)). The recorded traits showed interesting correlations. As expected, marketable yield was positively correlated with harvest index (0.66) and total yield (0.53), while unripe fruit yield and fruit affected by blossom-end rot were negatively correlated (0.58 and 0.67, respectively). Fruit number per plant was positively (0.52) and negatively (0.64) correlated with harvest index and unripe fruit yield, respectively. Average fruit fresh weight was positively correlated with total yield (0.53), while negatively correlated with harvest index (0.53). Stay green and total shoot fresh weight were positively correlated with unripe fruit yield (0.73 and 0.63, respectively). Total yield was positively correlated with main stem length (0.73), while a negative correlation was found with pH (0.77). Harvest index was negatively correlated with plant height (0.51). Finally, fruit number affected by blossom-end rot was positively correlated with canopy coverage (0.61), while negatively correlated with main stem length (0.48) and SPAD index values (0.52). Considering the overall agronomic performances, low values of shoot fresh weight, plant height, average fruit fresh weight and leaf stay green and high values of fruit number and main stem length, are promising traits to improve marketable yield of processing tomato cultivated in the organic farming system.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4859072
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