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Main ones are frost during flowering and lack of insects for pollination. That is assuming there is a suitable pollinator in the vicinity.
i beg to difer:
- most likely reason is lack of the right polinator, an apple tree can not pollinate it self
- how old is the tree? grafted in a nursery it will need 2-3 years if grown from seed it will need 5-8 years
- how much growth did it have this year? too much and it wont bear fruit, too little/weak and it wont bear fruit
- now come the frost or heatwave during blooming which ruins pollination
- as for the amount it varies with tree variety, age, size (not the same as age), rootstock, health, water stress, oxygen stress (usually from too much water), shortage of fertilizer be it nitrogen or iron or whatever is missing, tree design, thinning, June drop and many many many more
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoin what respect?
please be more specific with the question.
related to environmnet, reproduction, gerimnation, flower colour???
Wiki User
∙ 15y agoFertillizer, water, coolness.
Wiki User
∙ 7y agothe kind of seeds of plant itself
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Pollen from flowers on one plant can fertilize flowers on a different plant. what is this process called?
Pollen from flowers on one plant can fertilize flowers on a different plant. What is this process called?'
Does a pipal plant have flowers?
yes it does have flowers. Pipal tree does bear flowers
What variables affect plant growth?
Factors that can affect the growth of plants include: - Sunlight - Water - Soil Nutrients - Atmospheric composition (e.g. levels of carbon dioxide) - Temperature - Pressure (Altitude)
What are two processes that happen over and over again?
A seed plant that produces flowers , and a seed plant that doesn't produce flowers. Because that plant that produces flowers grows the flower over and over again , and so does the plant that doesn't produce flowers
You cross a pure-breeding plant with red flowers and a pure -breeding plant with white flowers. All the offspring have red white speckled flowers. what type of allele relationship does this show?
You cross a pure-breeding plant with red flowers and a pure-breeding plant with white flowers. All the offspring have red and white speckled flowers. What type of allele relationship does this show?
What variables should you consider when selecting flowers to grow that might attract butterflies?
red flowers because butterflies like bright colours and will be attracted if you plant that.
What affect does mulch have on flowers?
depends on things.the plant the amount of sun and rain u get and the mulch
How do you plant 6 flowers in 4 rows with 3 in each row?
This is impossibleYou will have to change the number of the rows or the number of flowers in each row.
Pollen from flowers on one plant can fertilize flowers on a different plant. what is this process called?
Pollen from flowers on one plant can fertilize flowers on a different plant. What is this process called?'
What purpose do flowers have for the plant?
Flowers produce seeds for the plant
What are some variables that might affect how quickly a plant grows?
Sufficient light or shade depending on the plant and the right soil in which the plant will grow be it rich, moist or dry. Shelter from strong wind is also a factor.
How does bleach affect the growth of plants and flowers?
Bleach kills the flower or plant you pour it on because it is so strong. IT EF
What factors can be changed in an experiment?
independent variables are the ones you change (how much watter to give the plant) dependent variables are the result (how tall the plant is) constant variables are ones that don't change (the type of plant)
How does the plant know when to produce flowers for reproduction?
It is not up to the plants when to or not to produce flowers. It depends on how healthy the plant is after fertilisation. The healthier the plant is, the faster it will produce flowers.
What is the independent variable of this sentence ''Investigate the influence of plant food on the number of flowers on rose bushes''?
The plant food: its composition, manner of feeding.
When is it the best time to plant flowers in Virginia?
The time you plant flowers depends on the type of flowers you are planting. An almanac can help you determine the best times to plant anything.
Is a flower a plant or toy?
flowers is a plant.
