TREATING THE NEEDS OF AVOCADO TREES DURING SPRING FLOWERING
Avocado spray. The flowering of avocado trees can occur from late winter to early summer, but most of the fruit collected grows from flowers that are pollinated during the two months of spring. Spring flowering is actually a stressful time for an avocado tree because the flowers require a lot of resources – sugars, starch, water, nutrients – in order to maximize the fruit set.
It is important to walk through avocado crops during spring flowering to ensure that each flowering avocado tree receives adequate water and nutrition. Evaluating trees will also help you note the low flowering rates of flowering, so you can identify the causes and plan ahead to avoid a recurrence of poor flowering.
THE MOST COMMON CAUSE OF BAD FLOWERING IN AVOCADO TREES – THE ALTERNATIVE CYCLE.
Unlike deciduous fruit trees, avocados never go dormant, so avocados have three simultaneous growth cycles. They grow this year’s fruit and provide nutrients and resources that ripen the fruit for harvest. They support the needs of the year two fruits that will be harvested next year. And they produce new shoots and buds that will produce either shoots or flower buds for a three year harvest.
Because it takes two years for an avocado fruit to grow from bud break to ripening, the amount of fruit harvested this year is a result of the cumulative effects of weather and cultural management of the past two years. Flowering is also affected by events of previous years.
Avocado trees also tend to develop alternative cycles that lead to harvests on the crop (large amount of fruit) followed by crops outside the crop (minimal amount of fruit). This alternating cycle is the most common cause of poor flowering.
In one year of cultivation, an avocado tree is likely to produce fewer peripheral young shoots because most of its resources are devoted to supporting the large amount of fruit. Fewer young shoots a year means less avocado fruit next year, because avocado trees only bloom, bear fruit and bear fruit on new peripheral shoots. At times, avocado crops were heavy enough to cause two years of poor flowering and yields, resulting in a large third-year crop as the tree struggled to find the “balance” between growth, fruit and future flowering. Spraying avocados with organic preparations help in this
To reduce the negative impact on avocado production, it is generally recommended to follow two avocado cultural management practices. First, make sure the avocado trees have the nutrients they need for good flowering and yields. Second, make sure the winter leaves stay healthy for as long as possible throughout flowering and fruiting.