Zinc deficiency is the most ubiquitous micronutrient deficiency problem in world crops. Because it is the building block of the structure and regulator of enzymes and proteins in the central nervous system. Providing the required amount of zinc to plants as the most important source of zinc supply is inevitable. Zn deficiency results in severe yield losses and in acute cases plant death.

Millions of hectares of cropland are affected by Zn deficiency and approximately one-third of the human population suffers from an inadequate intake of Zn. The main soil factors affecting the availability of Zn to plants are low total Zn contents, high pH, high calcite and organic matter contents and high concentrations of Na, Ca, Mg, bicarbonate and phosphate in the soil solution or in labile forms. Zinc fertilizers are used in the prevention of Zn deficiency and in the biofortification of cereal grains. In the following, we will get acquainted with the importance of zinc and its side effects in plants and humans.

The function of zinc in the human body

Zinc is an organic and nutrient that plays a vital role in many functions of the human body. Since the human body is not naturally able to produce zinc, it must be obtained through food or supplements. Zinc is the second most rare mineral in the human body after iron. Plant Resources The best sources of zinc required for this substance are essential for the activity of more than 300 enzymes that aid in the metabolism, digestion, functioning of the nervous system and many other processes. In addition, zinc also plays an essential role in the following cases:

• Growth and function of the immune system
• Skin and hair health
• Body development
• Health of taste and smell
• DNA synthesis
• Wound healing
• Production of essential proteins of the body
• Enzymatic reactions
• Reduce the risk of age-related diseases such as pneumonia, infection and age-related macular degeneration
• Reduce oxidative stress and increase the immune response
• Increase mental function
• Reduce inflammation

Symptoms of zinc deficiency in humans

It is estimated that around 2 billion people worldwide are deficient in zinc due to inadequate dietary intake. zinc deficiency is thought to cause over 450,000 deaths in children under 5 every year. Symptoms of severe zinc deficiency include:

• Developmental disorders
• Delay in puberty
• Skin rash
• Chronic diarrhea
• Impaired wound healing
• behavioral problems
• Weakening of the immune system

The importance of zinc in plant growth

The function of zinc is to help the plant produce chlorophyll. Zinc activates enzymes that are responsible for the synthesis of certain proteins. It is used in the formation of chlorophyll and some carbohydrates, conversion of starches to sugars and its presence in plant tissue helps the plant to withstand cold temperatures. Zinc is essential in the formation of auxins, which help with growth regulation and stem elongation. Leaves discolor when the soil is deficient in zinc and plant growth is stunted. Zinc deficiency causes a type of leaf discoloration called chlorosis, which causes the tissue between the veins to turn yellow while the veins remain green. Chlorosis appears on the lower leaves first, and then gradually moves up the plant. In severe cases, the upper leaves become chlorotic and the lower leaves turn brown or purple and die. When plants show symptoms this severe, it’s best to pull them up and treat the soil before replanting.

How to diagnose zinc deficiency in the plant

It’s hard to tell the difference between zinc deficiency and other trace element or micronutrient deficiencies by looking at the plant because they all have similar symptoms. The main difference is that chlorosis due to zinc deficiency begins on the lower leaves, while chlorosis due to a shortage of iron, manganese, or molybdenum begins on the upper leaves. The only way to confirm your suspicion of a zinc deficiency is to have your soil tested.

Compensation for zinc deficiency in plants

Zinc is found in most water soluble fertilizers at rates that should prevent its deficiency, unless fertilizer is not applied. Single element fertilizers such as zinc sulfate, zinc ammonium nitrate or chelated zinc can be applied; however, it is better to use a complete micronutrient fertilizer to avoid nutrient imbalances that could lead to deficiencies of other micronutrients.

Bees are known as the oldest inhabitants of the earth. This insect dates back to before the birth of man on this planet. For many people, the name bee is only associated with honey. While this insect plays a very important role in increasing agricultural production in gardens and greenhouses. Among the different species of bees, the bumblebee has characteristics that are completely beneficial to humans and the ecosystem. In the following, you will get acquainted with the benefits of keeping bumblebees

Pollination

The biggest benefit that bumble bees provide is pollination. Many flowers require insects such as bumblebees to transfer the pollen. Bumblebees are known to be very efficient pollinators. They transfer large amounts of pollen with every flower visit due to their size and very densely haired bodies. During the flower visit, pollen grains will stick to the fur of the bumblebee. During next flower visits, this pollen will be transferred to the stigma of the flower.
Did you know that bumble bees are responsible for nearly two-thirds of the nation’s total pollination? On top of that, bumble bees make a huge impact on the agricultural industry because they aren’t as attracted to “pretty” flowers like other bees. As a result, they pollinate and cross-pollinate plants and flowers that other bees and insects might overlook. Since these bees are less aggressive than other bees, they are also no threat to the average gardener. Unfortunately, the bumble bee population is in decline. The bumble bee population is currently on the decline, so please do not try and kill bumble bees if you encounter any.

Workforce without fatigue

Bumble bees pollinate your flowers and plants in a wide variety of weather conditions, unlike other insects. For example, bumble bees are active in temperatures of 40 degrees Fahrenheit and higher. They are most active in temperatures around 65 degrees Fahrenheit. Even on foggy, cloudy and rainy days, bumble bees are still hard at work and can fly in winds of up to 40 mph.

Ways to prevent extinction and increase the number of bumblebees in the garden

due to habitat loss, global warming, pesticides, and monocrop agriculture, their numbers are in sharp decline across. The loss of bees and other threatened pollinators could damage not only the world’s economy, but also endanger its very ecosystem.

Ways to help increase the population and activity of bumblebees include the following:

• Active from early spring through late fall, bumble bees need access to a variety of nectar- and pollen-producing flowers as food for the adult bees as well as their larvae. Native plants are best because they have coevolved with native bees. Plant a variety of native plants, some that bloom in the spring, some that bloom in the summer and some that bloom the fall, to provide three seasons of food for bumble bees and other pollinators.
• Ensure bumble bees have nesting sites. Bumblebees make small nests the size of a baseball. Most bumble bees nest in hives in underground holes made by larger animals, while some nest above ground in abandoned bird nests, grass tussocks or cavities such as hollow logs or spaces beneath rocks.
• Protect hibernation habitat. Because most queens overwinter in small holes on or just below the ground’s surface, avoid raking, tilling or mowing your yard until April or May.
• Avoid using pesticides. The use of insecticides and herbicides prevents the activity of bumblebee bees and exposes them to poisoning and destruction. A group of insecticides called neonicotinoids have been shown to have a devastating effect on all types of bees.

What are pesticides?

Pesticides are tools that are designed to help farmers to safely deter or manage pests – such as insects, fungi and weeds – that can threaten the health or quality of their crop. Along with other plant science innovations, pesticides help farmers grow crops more efficiently and sustain-ably than ever before.

Types of pesticides

There are three main types of agricultural pesticides:

Herbicides:control weeds so that crops can flourish without unwanted plants competing for vital nutrients, space, water and sunlight.

Fungicides:protect plants from disease-causing organisms that can spread quickly and destroy fields of crops.

Insecticides:control insects that could damage crops by eating them or infecting them with diseases.

Pesticides are also used in urban settings to protect public green spaces from pests.

The importance of using pesticides

Plant protection is the practice of managing weather, weeds, pests and diseases that damage or inhibit the growth of fruit, vegetable and other horticultural crops. Proper crop protection is important to produce higher quality crops with minimal wastage. This increase in productivity leads to less land, water and labour being required for food crops. With less land being used biodiversity is preserved and less greenhouse gases are emitted. It also ensures more food reaches the shops and markets in good condition, which helps to keep the prices down.

The importance of using pesticides at the right time

It might seem that the best time to use a pesticide is right when you see pesky insects. However, a few rules do apply and timing is also an important issue. Every pesticide use has its own timetable, but within that schedule, the best way to maximize effectiveness is by applying chemicals at the right time of day.

The proper timing of pesticide use depends on the following factors:

• Plant Behavior
• Air Movement
• Insect Activity
• Drying Time

Plant Behavior

Just as plants absorb water best early in the morning, they will absorb chemicals most effectively between 3 a.m. and 8 a.m., and again around dusk. Stomata, the pores on plant leaves, are open during these hours, absorbing water vapor and dew during the coolest time of the day and when sunlight is not stimulating food production through photosynthesis. Pores can absorb foliar spray easily at these times.

Air Movement

A second reason to spray chemicals early in the morning or at dusk is that air is more apt to be still than at other times of day. Some chemicals, horticulturalists caution, must be applied when air movement is low, both for effective application and for personal protection.

Insect Activity

Many insects are most active early in the morning and around dusk, making very early morning and early evening the most effective times for insecticide application. Insecticides can have undesirable consequences if they are applied at the wrong time.

Drying Time

Pesticide sprays require between one and 24 hours of drying time to maximize benefits. This may mean adjusting an automatic watering system or changing a watering routine to allow drying on leaves. Ideally, spraying is done on a clear day at the beginning of 24 rain-free hours. In humid climates, applying pesticide in the evening, thus leaving plant leaves wet at night, can increase plant vulnerability to disease.