In the last few years, spring frosts have become more of a rule than an exception. There are several prevention measures available for growers and numerous being tested; however, fruitlets often affected to some extent. One common phenomena is development frost rings. The aim our study was evaluate how occurrence rings affects sugar, organic acid, phenol content in flesh peel cv. ‘Gala’ apples....

Global warming has shifted the onset of spring plant phenology towards earlier dates. This shift can lead to “false springs” (plants get frost damage) because the date of last frost has not advanced at the same pace than the advancement of spring onset. Here, we use a cloud computing approach for processing big and high spatial resolution grids of temperature data to map the occurrence of false...

Abstract In developing countries, such as Brazil, farmers are susceptible to extreme events.The Brazilian federal government created insurance programs mitigate event effects, frost, called “Programa de Subvenção ao Prêmio do Seguro Rural”. Frost is an atmospheric phenomenon that causes damage plants due low temperatures exceed their resistance freezing. This paper seeks verify the risk level o...

delaying bud break, using chemicals is an approach to avoid spring frost damage. therefore, the effect of spraying different concentrations of soybean oil and naphthalene acetic acid (naa) on delaying bud break, altering internal atmosphere and cold hardiness in grape cultivar ‘fakhri’ was studied in 2011 in a commercial vineyard in maryanaj, hamedan using a factorial trial based on randomized ...

• Temperature sums required for bud burst can be used to predict risk of spring frost. Provenances with earlier timing display a higher frost damage. Increased events after is projected in warmer climate. A link between growth rhythm provenances and seed orchards needed. The annual cycle boreal trees synchronized seasonal changes photoperiod temperature. climate lead an increased damage caused ...

the flowering phase of apple trees is the most critical step in relation with low temperatures and frost events. therefore, forecasting the time of flowering is important. if a model can predict the exact time of flowering, it would be feasible to care for flowers agianst late spring freezing (lsf). in this study, we evaluated three temperature-base chilling models namely: chilling hours (ch), ...

Frost heave of canal foundation soil is the main factor destroying system engineering in cold area. Restricted by technical and economic conditions, further evaluation frost heaving index large channel areas where needed. Based on field investigation relevant methods, several indexes such as water content, compaction coefficient, fine grain cumulative negative surface gas temperature, direction...