At present, it is the stage of Hainan mango entering the flowering stage - young fruit stage, but also the serious period of mango thrips, which is not the day before yesterday, there are hainan mango grower friends sent pictures to the author that the skin of their own mango young fruits appeared bulging spots like knots, ask me is not thrips harm? If yes, what kind of medicine should be used, because he has used a variety of drugs before, and the effect is not ideal. After clicking on the picture, the author recognized at a glance that this was the symptom of the fruit hazard of mango thistle, so he replied to the farmer that it was the harm of thrips, and also gave him the corresponding prevention and control plan. So what kind of prevention and control plan did the author's farmer friend have? No hurry, wait for the author to come one by one.
The thrips that harm mangoes are mainly tea yellow thrips and black thrips, which have been "dealing" with mango farmers in Hainan for many years, and are also one of the pests that fruit growers find most difficult to control and headache. If the mango thrips are not properly controlled, they will run to the mango's flower spikes, young shoots and young fruits after a large number of propagation to bruise the plant tissue to suck the sap in it, the flower spikes and young shoots will lose nutrients and become weak and poor growth after being sucked by a large number of thrips, resulting in small flowers easy to fall off, young leaves wrinkles and distortion of growth stagnation, and eventually affect the mango tree posture; and once the thistle is immediately endangered by the young fruit, the initial small bumps like knots will appear on the skin of the young fruit. Later, with the continuous harm of thrips, the young fruit peduncles are large-scale contusion and will leave spots after being sucked, and these spots are oxidized by the air and become gray-brown spots with a matte feeling, which seriously affects the commodity value of mangoes.
<h1>Why do farmers find mango thrips hard to beat and always feel like they can't finish? There are a number of reasons for this</h1>
1. The local mango thrips "eat and live without worry" and multiply to a large number of insect mouths
Mango thrips like to stay in warm and dry environmental conditions for life, and Hainan region due to geographical reasons so the annual temperature will be higher, which meets the activity conditions of mango thrips; secondly, the current is the mango flowering period - young fruit stage, young shoots, mango trees a large number of flower spikes, new shoots and young fruits for the thrips are the source of food, living in the "food and clothing" conditions will naturally multiply and aggravate the harm to mangoes.
2, mango thrips are small, mobile, good concealment, many agents can not effectively touch kill
Mango thrips are very small, smaller than the rice common in our daily lives, they usually sneak to relatively small and hidden places such as the flower pillar, the leaf back of the new shoots, the main vein or the fruit base of the young fruit for harmful feeding, coupled with their very strong mobility, generally frightened, they will quickly crawl and escape to the hidden parts of the hidden parts, and when farmers use conventional agents for spraying, many medicinal solutions are often not effectively covered to the hidden parts of the mango tree. Or some agents have poor spreadability and cannot fully cover the new shoots and young leaves, which leads to the emergence of control blind spots and cannot effectively eliminate thrips.
3. Many farmers neglect the control of thrips eggs
Mango thrips are on the mango tree has obvious phenomenon of overlapping times, the author found through the visit and investigation that many farmers in the use of drugs to control thrips often only pay attention to the control of adults and nymphs and the pursuit of immediate insecticidal effect, but ignored the control of thrips eggs, that is, thrips adults, nymphs are killed but as long as the eggs can hatch the next generation of nymphs, so repeatedly, so farmers will feel that mango thrips can never finish.
<h1>Mango thrips will cause serious harm to mangoes once they occur, so what to do? Don't panic, try this new recipe, the effect is good</h1>
How serious is the harm of thrips to mangoes, the author has also introduced above and will not repeat it, for the prevention and control of mango thrips, many farmers are still dominated by chemical control, but they generally feedback that the prevention effect of many agents is getting less and less ideal, so what to do? Don't panic, fruit growers can try this new formula, that is, 11.8% methyl vitamin salt zoloft suspension 20 g + 5% lice mite urea microemulsion 20 g + vegetable oil additive 10 g to 30 kg of water, the following picture is the author personally tested after the picture, many verifications show that the formula has excellent efficacy against mango thrips.
Thrips that die 1 day after the drug
Why is this formula recommended? There are three main reasons: First, in the control of mango thrips, mango thrips have developed different degrees of resistance to many conventional agents such as thiamethiazide, kung fu or polycycide, etc., and among the compounds of methyl vitamin salt and zolachloramide recommended by the author, although mango thrips also have a certain resistance to methyl vitamin salt, the current mainstream agent is still a compound centered on methyl vitamin salt, and zolachloramide is a relatively novel compound. It has a good touch killing effect on thrips at the same time the agent has not been used in a large area in China, so the thrips have almost no resistance to zoladamide; second, the author also mentioned above that one of the reasons why mango thrips occur repeatedly is that many farmers ignore the prevention and control of thrips eggs, so adding lice mites can enhance the effective period of prevention and control; third, the thrips are small, mango leaves are dense, and fruit farmers are prone to control dead angles when spraying. The addition of vegetable oil additives can enhance the spread and permeability of the liquid on the leaves, so that the active ingredients of the liquid can exert the best effect to enhance the effect.
It should be noted that the high temperature weather at noon should be avoided when controlling mango thrips, and secondly, the prevention and control of mango thrips is still recommended to be mainly prevented in advance, the formula recommends that the use of thrips when the thrips mouth base is small will have a longer period of effectiveness, if the thrips occur seriously, they should be beaten 2 times in a row, once every 3 days, and then it will be found that the thrips mouth base will become very small.
Of course, in addition to the use of chemicals, in the process of controlling mango thrips, fruit farmers should also need to do a good job in various agricultural control foundations, such as timely replenishment of nutrients to mango trees, reasonable pruning of mango trees, fruit thinning and bagging, etc., and also timely removal of dead leaves and weeds in the field to maintain a clean and tidy field environment, so as to reduce the difficulty of chemical control and reduce the harm of thrips.