What is the harm of banana bunchy top disease? What are the symptoms? How to prevent it?
Banana bunchy top disease is a devastating disease of
bananas.
The susceptible plants are dwarfed and do not bloom and form
buds. Plants that are susceptible only at the present bud stage have few fruits
and no commercial value.
The main symptom of the disease is dwarfing of the plant. New
leaves are narrower, shorter, harder and straighter than one. The diseased
leaves are brittle and bunched, with dense green or black stripes on the veins
of intermittent and varying lengths. The pathogen is banana bunchy top virus.
The initial source of infection in the new banana planting
area comes from poisonous seedlings, and the old banana area comes from
diseased plants and their buds.
Long-distance transmission of the disease mainly depends on
poisonous buds, and close-range transmission depends on banana cross-vessel
aphid. Therefore, the peak period of disease is closely related to the
occurrence of vector insects.
The incubation period of the disease is 1 to 3 months. In
addition to bananas, the host of the cross-veined aphid also includes plants of
the genus Taro, ginger flower, abaca and heliconia. Among the existing banana
cultivars, disease-resistant varieties have not yet been seen.
What are the Control Methods of banana bunchy top disease?
i. Strengthen the quarantine of banana seedlings and tissue
culture seedlings. The buds selected in the field for tissue culture should
strictly abide by the quarantine procedures. The first generation of tissue
culture seedlings should be sent to the relevant departments for bioassay and
serum determination, and they should be allowed to propagate after they are
determined to be free of poison.
The poisoned seedlings should be destroyed in
time.
ii. The nursery should be installed in a place where there is
no banana garden within 2 - 3 kilometers of the area to prevent the spread of
poisonous aphids.
If necessary, a 60-mesh insect net can be added around the
nursery. Bag seedlings spray 40% dimethoate 1000 every 10 days - 1500 times
solution, or rotenine 800 times solution, or 50% aphid mist 2000 times
solution, etc., to ensure that the tissue culture seedlings are free from
disease during the false planting period.
iii. All disease-free tissue culture seedlings are the best
way to cure the disease.
The sporadic diseased banana gardens should be
regularly inspected and the unsympathetic plants should be dug out as soon as
possible. After opening the hole for half a month, replant the disease-free
tissue culture seedlings.
How to prevent banana bunching disease?
Banana bunching
disease prevention techniques: Banana is a common fruit in our daily life. It has a sweet
and delicious taste and rich nutrition. It is loved by people.
Some diseases
will inevitably appear during the banana planting process. Among them, bunchy
top disease is a common disease.
This article will introduce you to effective
prevention techniques for banana bunchy top disease.
Banana disease, bushy top disease, scallion or shrimp banana
is another name for banana bunching disease.
Plants that are early affected by
banana bunchy top disease are short and not bud-pulling. Plants that are
resistant to infection at the current bud stage are few and small.
Experts say
that banana bunchy top disease is a viral disease, which is mainly spread among
aphid strains in banana gardens, while the long-distance transmission mainly
depends on diseased seedlings. The host range of the virus is limited to sweet
bananas and abaca.
How to control banana bunchy top disease has become a problem that farmers have paid attention to?
The prevention and treatment of banana
bunchy top disease need to start from the following aspects
1. Strengthen soil, fertilizer and water management
Improving the management conditions of soil, fertilizer and
water in banana gardens to make banana plants grow vigorously and enhance
disease resistance is an active measure to control the occurrence of this
disease or reduce its incidence.
2. Dig out diseased plants
After planting, they must be inspected regularly, at least
once a month.
Once the diseased plant is found, it must be excavated.
Before
digging out diseased plants, spray insecticide to kill aphids, and then fill
the heart with 100-300 ml of kerosene, and dig out the diseased plants two days
later, or kill the diseased plants with herbicides.
For example, Yunnan Academy
of Agricultural Sciences used 105 glyphosate 10 ml to inject fake stems 10 cm
above the ground, and basically rotted in 30 days. The excised diseased plants
are burned down or buried in deep manure.
3. Replanting other crops
Hospitals with an incidence rate of more than 30% -50%, due to
too many opportunities for infection, healthy plants after digging out diseased
plants will also have a large number of cases.
In this case, other crops should
be replanted, or rice, sugarcane, etc. should be rotated to reduce the source
of this disease and the source of diseases and insects.
4. Strictly choose disease-free banana seedlings
New planting banana gardens must strictly choose reliable and
disease-free seedlings, and choose healthy and disease-free test tube seedlings
as planting materials.
Sprouts often do not guarantee their quality, and the
incidence after planting is often higher than that of test-tube seedlings.
5. Kill aphids regularly
After planting, it should be sprayed regularly with 40%
oxymetholone 800-1000 times, 50% aphid mist 1500-2000 times, or other
insecticides to control aphids to cut off the transmission route. It is sprayed
once every 10-15 seedlings and once a month for adult plants.
What are the Methods for preventing and controlling banana bunchy top disease?
Technical Field
The present invention relates to a method for
controlling banana bunchy top disease, which belongs to the technical field of
plant protection.
Background technique
Banana bunchy top disease is a devastating disease of
bananas.
The rate of diseased plants in the
field in Yunnan Province is generally between 5% and 10%, and some severely
affected banana gardens are between 20% and 40%.
The susceptible plants are
dwarfed and do not bloom and form buds; the susceptible plants in the current
bud period have few and small fruits and no commercial value.
The main symptom
of the disease is the dwarf plant. The new leaves are narrower, shorter,
harder, and straighter than one.
The diseased leaves are brittle and bundled,
with dark green or black stripes on the veins of intermittent and varying
lengths.
The diseased plants are tillering and clumping. The roots turn red
and purple, and the roots rot or turn purple, making it difficult to develop
new roots.
Diseased plants often do not bloom.
If the disease occurs during the
bud extraction period, it can be strong, but the fruit is few and small, and
the taste is light. No economic value. The pathogen is Banana bunchy top virus.
It belongs to the yellow dwarf virus group.
The virions of this group are
spherical.
The virus mainly spreads by sucking buds and banana aphids, and the
juice has a poison holding capacity for 13 days. The virus is semi-persistent.
Mechanical friction and soil contact can not spread poison.
What is the Pathogenesis of Banana Banana bunchy top disease?
The
initial source of infection in the new banana planting area comes from
poisonous seedlings, and the old banana area comes from diseased plants and
their buds.
The long-distance transmission of the disease is mainly achieved by
poisonous buds, and the close-distance transmission is achieved by banana
aphid. Therefore, the peak period of disease is closely related to the
occurrence of vector insects.
The incubation period of the disease is 1 to 3 months. In addition
to bananas, the host of the cross-veined aphid also includes plants of the
genus Taro, ginger flower, abaca and heliconia.
What are the Inventions to Control Banana Bunchy Disease?
The present invention provides a banana bunchy top disease
prevention method.
In order to solve the above technical problems, the technical
solutions adopted by the present invention are:
A method for preventing and controlling banana bunching
disease includes the following steps:
I) Ecological governance:
Application of Woyiduo or Difuli microbial fertilizer to
improve soil physical and chemical properties, improve soil fertility, and
enhance the absorption capacity of banana roots.
II.) Agricultural control:
(1) Selecting good
varieties, sterile seedlings and disease-free plants for planting.
(2) implement rotation
for more than two years, with rice, sugarcane and other crop rotations, in
order to reduce the source of disease and the source of diseases and insects.
(3) Remove diseased
plants in banana gardens in time, discover diseased plants, remove roots as
early as possible, and remove them from the banana gardens for destruction.
The
diseased plants should be removed in a timely manner from April to May each
year.
- Avoid partial application of nitrogen fertilizers.
- Apply enough organic fertilizers to the soil.
- Strengthen fertilizer and water management.
- Maintain soil wetness.
- Pay attention to ventilation.
III.) Biological control:
Insect control and disease control: spray 200g / liter
imidacloprid solution with water 4000 times on the front and back of the stem
and leaves to spray aphids, once every 7-10 days, spray 2-3 times in total. Control
the number of field pests. Reduce the spread of viruses.
IV.) Biological control:
Spraying 0.5% of lentinan liquid 500 times solution 15-20
days after planting, spraying once every 7-10 days;
V.) Physical control:
Once the diseased plants are found, they should be excavated
immediately, and the bulbs below the ground should be dug up and burned to
prevent the emergence of new shoots. The diseased holes should be sterilized
with lime to control the virus infection.
VI.) Chemical control:
At the beginning of the disease, spray protection was
started, spraying 20% of guanidine.
Copper acetate wettable powder 1000 times
solution and other antiviral agents, once every 10 days or so, continuous
prevention and treatment 2-3 times.
As a preferred technical solution, the specific use method of
Wo Yiduo in ecological management is to add HYT-A 150-200ml and HYT-B 250-350ml
in 15L of water and stir evenly, and place at room temperature 2.
In the day,
add HYT-C80-120g, and then place it for another day. Add water to 250 kg, stir
well, then irrigate the roots.
As a preferred technical solution, the specific use method of
the idiosyncratic microbial fertilizer in ecological management is as follows:
According to 200-400ml of difluvial microbial fertilizer mixed with water 15-30
kg, the difluvial microbial fertilizer mixed with water is evenly mixed After
spraying on the ground.
The Difulai microbial fertilizer in the present invention is
a biological bacterial fertilizer produced by Beijing Difulai Technology
Development Co., Ltd. Difuli microbial fertilizer can decompose and remove
nitrite, hydrogen sulfide and pesticide residues in crops, adsorb and degrade
chromium, nickel, lead, tin, cobalt and other heavy metals.
It contains
biologically active factors C, G, F can Participate in the internal
circulation of crops, quickly repair damaged cells to make food safer.
It can
improve the physical and chemical properties of the soil, increase the content
of organic matter and humic acid.
The formation of agglomerate structure is
fast, the ventilation and water retention are good, the crop root system is
developed, the fibrous roots are long, and there are many white roots. Strong
activity, improved absorption of soil nutrients.
Difuli can activate soil
rhizospheric microorganisms, release large, medium, and trace elements of soil
solidification, and efficiently fix nitrogen, provide comprehensive nutrition
for bananas, promote root and strong seedlings. Improve banana photosynthesis.
Disease resistance and stress resistance have a good preventive effect on
banana bunchy top disease.
Woyiduo in the present invention is a biological bacterial
fertilizer, which is developed based on the principles of rhizosphere soil
microecology, plant nutrition and physiology, and the basic concepts of modern
"organic agriculture". This Includes HYT-A, HYT-B and HYT-C three.
HYT-A is composed of 18 non-toxic, non-pathogenic and highly
active soil nitrogen-fixing bacteria, and beneficial bacteria with different
functions are prepared into bacterial agents.
After activation and expansion,
they can be applied to a variety of The soil environment and each growth period
of the crop directly provide important nutrients such as nitrogen, potassium
and basic inorganic mineral nutrients to the roots of the crop.
Efficacy characteristics:
i. It has high efficiency of
fertilization, balanced nutrition, stable improvement of fertilizer utilization
rate and soil fertility, and the duration of validity can reach more than 4
months.
ii. To optimize the ecological structure of the
soil, which has significant effects on curing compaction, pollution,
acidification and salinization.
iii. To form a biological control mechanism, which
has a prominent role in preventing dead trees and resisting double cropping.
iv. To automatically adjust crop growth, promote
rooting, strengthen seedlings, and improve banana yield and quality.
HYT-B is a bio-hydrolyzed marine organism head and chest
carapace, which undergoes a late dissolution treatment of fermentation broth.
Efficacy characteristics: Rich in 19 kinds of L-amino acids, minerals and
natural polymer, it can directly provide nutrients for the growth of
microorganisms and plants.
It can quickly promote the development of crop root
systems, enhance leaf photosynthesis and crop disease resistance, stress
resistance, strong seedlings, healthy plants, increase yield and improve
quality.
HYT-C is rich in high purity, high content of chitin and
chitinase-inducing actives.
Efficacy features:
- Provide nutrition for HYT-A soil microbial bacteria and crops.
- Can activate and induce plant and microbial organisms to produce a large number of biological enzymes, organic acids, alkaloids and other disease resistance factors.
- At the same time, it can quickly promote the massive expansion of beneficial bacteria. It can stimulate crop growth.
The beneficial effects of the present invention:
The present invention adopts ecological control, agricultural
control, biological control, biological control, physical control and chemical
control measures to greatly reduce the incidence of banana bunchy top disease,
the effect is good, and improves the yield and quality of bananas.
The use of Difult microbial fertilizer can effectively
improve the soil structure and soil biological colonies, can effectively
prevent the onset of banana bunchy top disease, and can effectively improve the
yield and quality of bananas.
The present invention adopts precautionary measures, the
present invention adopts precautionary measures, ecological control,
agricultural control, biological control, biological control, physical control
and chemical control for comprehensive control, while using agricultural
control, physical control and other measures. Comprehensive prevention and
control reduces the average incidence of banana bunchy top disease, increased
output, significantly improved banana grades, and achieved good economic
benefits.
Technical Solutions
The technical solutions of the present invention will be
described clearly and completely in conjunction with specific embodiments of
the present invention.
Obviously, the described embodiments are only a part of
the embodiments of the present invention, but not all the embodiments.
Based on
the embodiments of the present invention, all other embodiments obtained by a
person of ordinary skill in the art without creative work fall within the
protection scope of the present invention.
Example
A method for preventing and controlling banana bunching
disease includes the following steps:
I.) Ecological governance:
Application of Woyiduo or Difuli microbial fertilizer to
improve soil physical and chemical properties, improve soil fertility, and
enhance the absorption capacity of banana roots.
II.) Agricultural control:
(1) selection of
improved varieties, sterile seedlings and disease-free plants for planting.
(2) Rotation of more
than two years, and rotation of rice, sugarcane and other crops to reduce the
source of disease and the source of diseases and insects.
(3) Remove the
diseased plants in the banana plantation in time, find the diseased plants,
remove the roots as early as possible, and remove them from the banana
plantation for destruction. The diseased plants should be removed in a timely
manner from April to May each year.
(4) Reasonable water
and fertilizer management, diligent application of micro-fertilizer, reasonable
ratio of nitrogen, phosphorus, and potassium to improve resistance and
immunity, avoid partial application of nitrogen fertilizer, apply enough
organic fertilizer to the soil, strengthen fertilizer and water management,
maintain soil Wet, pay attention to ventilation.
III.) Biological control:
Insect control and disease control: Spray 200g / liter
imidacloprid solution with water 4000 times on the front and back of the stem
and leaves to spray aphids, once every 7-10 days, spray 2-3 times in total.
Reduce the spread of viruses.
IV.) Biological control:
Spraying 15-20 days after planting
1. Diseased plants
2. Diseased leaves
3. Toxic insects
(banana cross vein aphid)
The newly grown leaves of the diseased plant are shorter and
narrower than one, so that the plant is short and the leaves are hard and
straight and grow together in bundles, forming a bundle top.
The old leaves of
the diseased plant yellowed, while the new leaves were darker green than the
healthy plant.
The diseased leaf is hard and brittle, and is easily broken by
hand.
Careful observation shows that many diseased leaves (the first diseased
plants are on the new leaves) have many intermittent green veins on the veins
of the leaves, and sometimes they become black stripes after chlorosis and
transparency.
The stripes are 1-10mm long and wide. 0.75mm, because the streaks
are dark green, the diseased new leaves are more green than the healthy ones.
There are also thick green stripes on the petioles and fake stems, commonly
known as "green tendons". This is caused by the abnormality of
chlorophyll transmission and distribution in the plant caused by virus damage.
Dark green stripes and "green bars" are the most reliable features
for diagnosing this disease, especially early diseased plants.
There are many
tillers in the diseased plant, the roots are reddish purple, dull and most of
the roots rot or turn purple, without new roots.
The roots of the diseased plants
are mostly nematode.
Diseased plants generally do not bloom and form buds. If the
disease occurs when the buds are to be drawn, the buds are straight and not
strong. At this time, it has entered the late growth stage, the leaves have
been aligned, and do not show the "bundle top" symptom.
The leaves
also show yellow, but the veins of the young leaves still have thick green
stripes.
If the plant develops symptoms after bud extraction, the symptoms are
not obvious.
Generally, "green tendons" can still be seen. The flower
buds can still be strong, but the fruit axis is long and thin, the fruit is
small and few, the fruit tip is as thin as the finger, and the flesh is crisp
and unscented. Some people call this type of diseased plant as recessive bunchy
top disease.
Microscopic examination of the phloem tissue of the midrib of
the leaf of the early diseased plant or petiole revealed that the development
of the phloem fibrous sheath was inhibited and became cells containing
countless chloroplasts.
The basic tissue of the phloem was filled with
chloroplasts (not in the healthy plant).
The basic tissue cells of the cell
undergo "parallel" growth, producing many polygonal cells, each of
which contains an abnormal nucleus.
The concentration of free amino acids in diseased
leaves was lower than that of healthy leaves.
Diseased plants often die when the buds are blooming.
The
adult plant grows slowly after being infected, and the heart leaf is difficult
to extract, resulting in "heart rot".
Banana bunching disease has become a major obstacle to the
production of bananas in Asia. In 140,000 mu of banana gardens in Dongguan
City, Guangdong, China the area of bunching disease has reached more than 100,000
mu in 1986, with an economic loss of 24 million yuan.
In the suburbs of
Nanning, Guangxi, a total of 100,000 banana plants and more than 1.5 million
kilograms of bananas were damaged in 1979-1981.
What is Banana bunchy top virus Pathogen?
The pathogenic virus is called Banana bunchy top virus.
Viruses are equal-diameter spherical mitochondria, which are difficult to
observe under electron microscope.
Since there is not much research on it, the
classification location is not yet clear.
This virus is mainly transmitted by
disease-absorbing buds (banana seedlings) and banana cross-vein aphid
(Pentalonia nigronervosa Cog.). So the diseased plants and their
disease-absorbing buds are the source of infection of banana garden bunching
disease.
Banana cross-headed aphid is the only natural vector for the special
disease of beam top disease.
Saotry (1980) reported that the cotton aphid
(Aphis gossypis) can sometimes spread the virus.
Banana cross-vein aphids (nymphs) continue to take drugs on
diseased plants for more than 17 hours, and after a recurring period of several
hours to 48 hours, and then continue to feed on healthy plants for more than
1.5 hours, the healthy plants can become ill.
The drug transmission ability of
the cross-legged aphid can be retained for 13 days. Therefore, the virus is
considered a "semi-persistent" virus.
There are two types of bunchy top virus:
Severe virus
(severe) and weak virus (moderate). The length of the incubation period depends
mainly on the time required to grow 2 banana leaves after receiving the poison,
generally 19 days in summer and 125 days in winter.
Symptoms of banana plants
infected with banana aphids can show symptoms 35 to 40 days after being
poisoned.
The host range of this virus is limited to sweet bananas and
abaca.
How the Occurrence of Banana bunchy top virus takes place?
Banana is a perennial plant, mainly by sucking buds to
reproduce. After the plant is susceptible, not only does the mother plant
develop disease, but its buds are also infected (but individual buds can avoid
virus infection without disease).
Therefore, the primary source of infection of
the disease is mainly diseased plants and their buds in the diseased area, and
diseased buds in the new area and the disease-free area.
Once an area has an
initial source of infection, the disease can be transmitted by banana aphid or
cotton aphid.
Banana seedlings can be sick within 19-125 days after infection.
Due to the constant infection of aphids, the disease rate of a 2-3 hundred
acres of banana plantation can reach more than 80% in 4-5 years.
In the field, the beam top disease is mainly transmitted by
the aphis gossypii and cotton aphid, and cannot be transmitted through the
juice.
Therefore, the environmental conditions that affect the epidemic of the
disease are mainly affected, mainly the environmental conditions that affect
the occurrence of aphids.
Generally, in years with little rain and dry weather,
the number of aphids multiplies, the number of winged aphids occurs more, and
the disease occurs more seriously.
In rainy days and humid climates, aphids die
more often due to natural enemies and other factors, and beam-top disease
occurs less frequently.
Observation in Dongguan, Guangdong:
Aphids occur in the
banana garden anniversary, but there are generally two obvious peak periods,
namely October to November and late March to May of the following year.
Aphids
like to suck juice from the horn mouth of the petiole of banana buds, and they
will hide in the depth of the horn mouth of the petiole in winter in late
November (average daily temperature below 17 ℃).
The growth and decline of banana plantations is mainly affected by
the increase and decrease of aphids and virus incubation period.
Usually, the onset begins in late
March and then increases.
May is the peak period of onset, and the incidence
decreases after June, and it basically does not occur from December to March of
the following year.
From December to February, the bananas stopped growing due
to low temperature and little rain.
Although the plants were susceptible, they
did not show symptoms. The temperature gradually increased in March and there
was more rain.
The banana trees resumed growth until April-May. Successively
showing symptoms.
Because aphids like to feed on the young sucking buds and
seedlings, the sucked buds and supplemented seedlings drawn in the disease area
are more susceptible to disease than the adult plants.
Bananas are the most susceptible to disease, with Kanchikela
and Venattukunnan varieties showing high resistance.
Pink plantains and
plantains are more resistant to disease.
Passion bananas (Longya banana, sand
banana, glutinous rice banana, etc.) have poor disease resistance.
After the banana suffered severe frost, the diseased plant
rate increased that year.
Partial application of chemical nitrogen fertilizer,
the ratio of nitrogen and potassium is out of balance, which is conducive to
disease occurrence.
Excessive application of chemical nitrogen fertilizer
increases the acidity of the soil, which weakens the disease resistance of
banana plants and is conducive to disease occurrence.
In the banana plantation
where calcium chloride (CaCl2) and magnesium oxide (MgO) (CaCl2: MgO = 3: 1)
were applied, the dwarfism of bundle-top disease appeared later.
It also showed
that the greater the ratio of CaCl2 + MgO to K2O in banana leaves, the lighter
the disease.
What are the Prevention methods against Banana bunchy top virus?
1. Strict quarantine
Prohibit seed seedlings, cultivate and plant disease-free
seedlings, use triphenyltetrazolium chloride to quickly identify diseased and
healthy plants, select non-toxic mother plants and suck buds, and plant them.
In the new districts, disease-free areas, and newly built banana gardens,
strict selection of disease-free seedlings is the most important measure.
When
fetching seedlings in the ward, the banana seedlings in the disease-free or
rarely diseased garden must also be selected, and the mother plant must be
carefully inspected to dig the seedlings. However, because the virus has a long
incubation period, it must be checked frequently after planting.
Once diseased
and suspicious seedlings are found, aphid mist, anlubao, dimethoate, etc.
should be used to prevent and control aphids.
Then dig out the diseased plants
or inject 5-10ml of 40% glyphosate 10 times solution, and the angel's banana
head rots after 15 days.
Irradiation of diseased sucking buds with 2000 roentgen's
gamma rays, some of them can resume normal growth and reduce the incidence of
disease.
Before planting banana seedlings, use quinoline-25 to treat
the pulp and soak the buds to prevent the occurrence of bundle top disease.
2. Timely treatment of diseased plants
Since the diseased plants cannot resume normal growth, they
must be dug out vigorously, and the banana plantation should be inspected every
month.
One plant should be found and treated in time. Perforate the false
stem of the diseased plant 10-40cm above the ground, use 40% glyphosate
(original solution or 10 times solution), 40% dipyridin (original solution or
10 times solution).
Infuse or inject 8-10ml, 15- After 30 days, the diseased
plant died and the banana head rotted.
In addition, it can also be made of
poison wood or 2,4-D stock solution impregnated with special wood poison
sticks, inserting 2 to several roots (inject 6mg per plant) on the pseudostem
of each diseased plant, and poisoning the diseased cluster to rotten in 21 days.
This will not affect the normal growth of surrounding banana plants.
Replanting
banana seedlings in the poisoned diseased plant holes will not cause disease
again.
In the old wards, especially the banana plantations with
lighter conditions, in order to eliminate the disease, all diseased plants in
the whole garden and in the whole area must be treated or excavated and
replanted in the above-mentioned manner within one month in the winter.
Identify the diseased plant at any time in the future and dig it out at any
time, so that it can receive a good control effect.
3. Plant disease-resistant bananas, varieties and banana test-tube seedlings
In banana gardens with an incidence of more than 30%, healthy
seedlings will also be affected in large quantities after timely removal of
diseased plants.
In this case, plant disease-resistant varieties such as
plantains and pink plantains, and plant bananas and test-tube seedlings after
the beam-top disease is completely eliminated.
4. Aphid control
Timely and comprehensive prevention and control of aphids to
prevent the spread of disease vectors. 40% dimethoate and 50% aphid mist can be
used. 10% Anlvbao Daofengsan, endosulfan, lesiben, etc. can be controlled once
a month.
A medicinal sachet formulated with aldicarb, sulfamethoxa,
chlorfenapyr, isopropamid, carbamazepine, long-acting phosphorus, and
chlordiazepam, which is applied to banana leaf veins, has a good anti-aphid
effect.
Injecting 0.05-0.2ml of long-acting phosphorus stock solution into
banana stems every 3 to 4 weeks has significant control effect on aphids.
5. Strengthen the cultivation management of banana garden
Increase the application of organic fertilizers and
phosphorus and potassium fertilizers, change the application of urea to
compound fertilizers, and increase the ratio of potassium and nitrogen
fertilizers to 1.5-3: 1.
The acid soil of banana plantation may consider the
application of appropriate amount of lime and magnesium oxide to reduce its
harm and improve the disease resistance of the plant.
Author's Bio
 |
| Dr. Shawna Reason |
Education: MBBS, MD
Occupation: Medical Doctor / Virologist
Specialization: Medical Science, Micro Biology / Virology, Natural Treatment
Experience: 15 Years as a Medical Practitioner
About Me | Linkedin | Quora Profile | Medium Profile | Twitter
Very useful information thanks for sharing here
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