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The chemical quality of almonds variety Guara cultivated in nonirrigated farming (NI) and drip-irrigated farming (DI) conditions with different fertilizing treatments, two organic treatments (T1 and T2) and a mineral treatment (C), all of them with a N-P-K proportion of 1-2-1, is studied. Almonds obtained in irrigated farming showed higher content in sugars and organic acids and a better quality of oil. Among the fertilizing treatments employed, the organic ones have shown the best results related to chemical quality, regardless of the quantity of fertilizer employed (9.5 kg per T1 tree vs 4.5 kg per T2 tree). The organic treatments produced almonds with a higher content of sugar, organic acids and fiber and a similar fat content. These results are interesting from a commercial point of view since the consumers, even under the same conditions of chemical quality, prefer those products cultivated under organic conditions due to their benefits for health and because these practices are environment-friendly.

Zucchini squash showed chilling injury (CI) damage as pitting on 93% of their surface after 12 days at 2 °C, and a 2−2.5-fold increase in putrescine levels in both skin and pulp was detected during storage (from 162 and 38 to 320 and 98 nmol g-1 of fresh weight, respectively). Abscisic acid concentration increased mainly in the skin. Treatments with CO2 prior to storage at 2 °C were found to be effective in reducing CI. With 5% CO2, increases in putrescine and abscisic acid levels were lower than in control fruits, while exposure to 40% CO2 resulted in a decrease of these values. Spermidine and spermine levels decreased during storage, regardless of treatment. Thus, the 40% CO2 treatment was more effective than the 5% CO2 one in reducing both CI and the putrescine and abscisic acid changes found in control chilling-injured squash. Keywords: Zucchini; chilling injury; polyamines; abscisic acid