Foliar Application of Humic Acid on Quantitative and Qualitative Characteristics of Aromas Strawberry in Soilless Culture

ABSTRACT Consequently, the application of 1.5-3 mgL -1 humic acid is recommended in hydroponic culturing of strawberry

The effect of methyl jasmonate and sodium silicate on the mineral composition of Solanum lycopersicum L. grown under salinity stress

Soil and water salinities have become a major problem for agricultural activities as they can negatively affect crop yield in different ways. The present study aimed to investigate the effect of methyl jasmonate (MeJA) and sodium silicate (Si) on the content of selected mineral elements in the leaves of tomato plants (Solanum lycopersicum L.) under salinity stress. A fully randomized block experimental design was used with three factors, including three levels of salinity (0, 4, and 6 dS m−1), Si (0, 4, and 8 mM), and MeJA (0, 5, and 7.5 µM). Main plots were allocated to the three levels of salinity and the subplots were devoted to MeJA and Si levels. An increase in MeJA concentration was related to an 8.5% increase in leaf P content. When MeJA was applied at high salinity levels, the Na, Ca, and Mn concentrations decreased, but Fe increased. The application of 8 mM Si reduced the concentration of Cl by 50% at a salinity level of 4 dS m−1 in plants not treated with MeJA. The triple interaction of the factors was significant for K, Mg, and Cl (p < 0.01). Furthermore, the treatments used did induce significant differences in leaf Zn and N concentrations. The results indicate that MeJA and Si can partially mitigate the adverse impacts of salinity stress and contribute to an increased uptake of nutrients under saline conditions

Evaluate The Effect of Modified Atmosphere Packaging (MAP) on Physicochemical Properties and Microbial Population of 'Shahani' Dates

ABSTRACT 'Shahani' cultivar is the dominant date fruit in Jahrom region. Because of non-synchronized ripening and harvesting of the entire cluster, more yield of this cultivar is as Rotab. 'Shahani' Rotab in ordinary condition has the short storing ability and quickly affect with color change and microbial decay. In order to evaluate the effect of modified atmosphere packaging (MAP) on physicochemical properties and microbial population of 'Shahani' Rotab, this study was performed in Pars-Narang company depended on Tani group. For this purpose, 'Shahani' Rotab was placed into special containers of food packaging (PET) and was replaced their normal atmosphere with different percentages of O 2 , CO 2 and N 2 by using of vacuum set and was sealed by impenetrable plastic to steam and gases and then was transferred to refrigeration with 0±1 °C temperature. In during about 6 months, were evaluated quantitative and qualitative properties and microbial population as monthly. Based on the results, in during of experiment period, relative humidity amount decreased, and TSS and pH increased but these changes were not significant. In all without-oxygen treatments, total microbial, mold and yeast population decreased from second month and became zero from the fifth month after that. Attentive to Rotab color, stability of container shape and sugar formation, CO 2 30% + N 2 70% treatment and storing in 0 °C after 6 months was recognized as the best treatment

Study on Yield and Quality of 16 Tomato Cultivars in South of Iran

ABSTRACT: In order to, evaluation and identification of suitable cultivar for Minab region at south of Iran, this experiment was performed as RCBD with 16 tomato cultivars and 3 replication. Sowing was performed in tray culture with 105 cells containing peat moss in early September and transplants was cultured in mid October. Evaluated cultivars were consist: Lesto, Kimia, DFT3000, DFT3002, DFT3003, ZD731, ZD625, ZD633, ZD634, ZD610, 9014, T97301, RFT112, TUS33812, TH1462 and Sunseed6189 as control. Traits were recording done based on tomato discriptor. Other traits also was evaluated such as yield, qualitative traits such as Brix, Vitamin C, pH and external resistant to fungi and virus diseases. In addition to more yielding and beter quantitative and qualitative traits, the cultivars that had beter resistant to fungi and virus diseases in condition of this study, had been recognaized suitable. These cultivars respectively were consist of RFT112, Kimia, ZD634 and ZD633

Effects of Shade Net Colors on Mineral Elements and Postharvest Shelf Life and Quality of Fresh Fig (Ficus carica L.) under Rain-Fed Condition

Photoselective netting is well known for filtering the intercepted solar radiation, thus affecting light quality. While its effects on leaf mineral elements have been well investigated, how color netting affects fruit mineral nutrients remains elusive. This study was conducted to evaluate the effects of shade provided by blue and yellow nets on mineral nutrients of fig trees under rain-fed conditions. The experiment was arranged as a split-plot treatment in a randomized complete block design with three replications. Cultivars “Sabz” and “Siah” were covered with color nets or left uncovered (as the control group). The highest nitrogen content (8710 ppm) was recorded for cultivar “Sabz” covered with blue net. Color nets enhanced calcium concentration in cultivar “Siah”. Covering fig trees with yellow net increased magnesium content in cultivar “Siah” and phosphorus content in cultivar “Sabz”. Our observation showed the significant positive effect of photo selective nets on postharvest quality, by decreasing fig fruit weight loss and extending shelf life of fruits. In general, color nets as a new agro-technological approach can maintain fruit nutrition under rain-fed conditions and increase postharvest shelf life and quality of fresh fig

Foliar Application of Humic Acid on Quantitative and Qualitative Characteristics of 'Aromas' Strawberry in Soilless Culture

ABSTRACT In order to evaluate the effect of humic acid on quantitative and qualitative characteristics of strawberry (Fragaria ananasa cv. 'Aromas'), an experiment was conducted as factorial arrangement in randomized complete block design with three replications in a commercial hydroponic greenhouse. The rooted daughter plants of 'Aromas' strawberry were planted in pots containing perlite and cocopea