Watering

How the Pear Uses Water

The main process linked to water consumption is transpiration. Imagine a pump: during the day, the tree “pumps” huge amounts of water from the soil through its roots, transports it up the vessels to the leaves, and evaporates it through stomata (tiny openings on the leaves). This process, called evapotranspiration, is the driving force for nutrient uptake from the soil and plant cooling (Shackel, 2007).

On a hot, dry day, a mature pear tree can evaporate its own weight in water. This is a tremendous load, and if the roots cannot replenish this loss, the tree begins to “starve” and suffers from water stress.

Factors Determining Water Need

1. Tree Age

This is the simplest and most straightforward factor.

Young saplings (1–2 years): Their root systems are still weak and shallow. They cannot extract water from deep soil layers. Therefore, they need frequent but moderate watering. The roots should be kept in moist, but not waterlogged, soil. Watering young trees should aim to stimulate the development of a strong, deep root system (Reil, 2007).

Fruiting trees: The powerful root system of a mature tree can draw water from depths of up to 3–4 metres. However, the bulk of the active absorbing roots are located in the top 50‑centimetre soil layer (Westwood, 1993). So you need to water them less often but much more abundantly, soaking the soil to a greater depth. Watering should maintain moisture in the main root zone.

2. Growth Phases (Critical Periods)

This is a key aspect for understanding the watering schedule. The greatest water demand occurs during specific, critical periods for pear development. Lack of moisture in these phases directly reduces yield and fruit quality.

Three main critical periods are distinguished (Mandal, 2021):

Flowering and fruit set: Water is especially important for successful pollination and initial ovary growth. Moisture deficit can cause massive flower and ovary drop, sharply reducing yield.

Active shoot and fruit growth (about 6–8 weeks after flowering): This is the phase when the tree is actively growing leaf mass and the fruits enter the cell division stage. The potential fruit size is set during this period. Water stress at this time severely limits growth and leads to smaller fruits (Shackel, 2007).

Fruit filling (4–8 weeks before harvest): This is when the main increase in fruit weight occurs. Water is needed for the accumulation of sugars and juices. Lack of moisture will result in small, dry, and less sweet fruits (Mandal, 2021).

3. Climatic Conditions

This is obvious: heat, dry air, and strong wind multiply transpiration many times over. The same orchard in a dry steppe versus a humid climate will require different amounts of water. Irrigation becomes critically important precisely in regions with dry, hot summers where rainfall is insufficient to cover the tree’s needs (Westwood, 1993). In such conditions, the pear—which is already more water‑loving than the apple—requires mandatory irrigation.

How to Tell if the Tree Needs Water?

The most reliable method is soil moisture monitoring. Instead of relying on a calendar, use simple techniques:

1. “Probe” method: Take an ordinary metal rod or thick wire and try to push it into the soil to a depth of 30–40 cm. If it goes in easily—moisture is sufficient. If it goes in with difficulty or not at all—the soil is dry and needs watering.

2. Spade test: Dig a small hole 30–40 cm deep in the root zone. Take a handful of soil from that depth and squeeze it in your fist. If, when you open your hand, the soil does not crumble and leaves a damp trace on your palm—moisture is optimal. If it crumbles—it’s time to water. If it forms a tight ball and leaves mud on your palm—the soil is waterlogged.

3. Leaf and shoot condition: With water shortage, leaves lose turgor, become limp, and may droop. Shoot tips stop growing. However, this is already a sign of severe stress, so you shouldn’t wait for it.

Tip: It is better to water less often but deeply than frequently and lightly. Frequent shallow watering encourages roots to grow in the top soil layer, making the tree less drought‑tolerant. Deep watering “forces” roots to grow deeper.

Watering Young Trees

The most critical period is the time after planting. The sapling’s root system is severely damaged, and it cannot properly extract moisture from the soil. Its main task in the first year is to establish and grow new roots. For this, the soil in the root zone should always be slightly moist, but not wet.

• First year: Water the young tree frequently (1–2 times a week in dry, hot weather) but in small amounts. Pour 1–2 buckets of water under the root. The key is that moisture reaches all the roots, which are still in the planting hole area.
• Second–third year: The root system expands, so the watering zone should be widened to the perimeter of the crown. Watering frequency decreases to once every 1–2 weeks, but the amount increases to 2–3 buckets per session. Watering should encourage roots to penetrate deeper, not stay on the surface (Reil, 2007).
• Golden rule for young orchards: In the first year after planting, avoid even short‑term drying of the soil. On hot days, it is also helpful to spray the crown with water on the leaves in the evening to reduce stress.

Watering Fruiting Trees

A mature tree has a powerful root system and can extract water from great depths. However, as we said in the first chapter, it has three critical periods when moisture shortage will cause maximum damage to the crop. Using these timing and weather cues is the grower’s main task.

1. From bud swelling to flowering

Spring moisture is the key to success. If the winter had little snow and the spring was early and dry, be sure to carry out pre‑bloom irrigation. 1–2 weeks before flowering starts, water the soil thoroughly to saturate the entire root zone (to a depth of 50–80 cm). This will help the tree “wake up”, ensure vigorous flowering and good fruit set. This is especially important in the southern arid regions.

2. After flowering (active shoot and ovary growth phase)

This is the most critical period for watering. About 3–4 weeks after flowering, active growth of shoots and young fruits begins. Lack of water at this time will cause ovaries to drop en masse. This process is known as “June drop,” and one of its main causes is water stress (Mandal, 2021). During this period, the soil should be constantly moist in the active root zone (30–50 cm).

3. Fruit filling period (one month before harvest)

This is the final and very important stage. When fruits begin to fill with juice and increase in size, they need a lot of water. It is now that juiciness, sweetness, and fruit weight are formed. Lack of moisture during this period is a guarantee that the pears will be small and tasteless.

4. After harvest

Many growers forget this, but it is critical for next year’s crop. Moisture received in late summer–early autumn promotes flower bud formation and increases winter hardiness. If autumn is dry, be sure to carry out another abundant watering (moist soil freezes more slowly, and roots suffer less from frost).

How Often to Water?

This depends on your climate, soil type, and weather. There is no universal schedule. However, there is a proven method: water when the soil at a depth of 30–40 cm begins to dry out. Instead of counting days, use the simple moisture control methods described at the end of the first chapter.

• In cool and rainy weather — watering is not needed; the tree gets enough from rainfall.
• In hot and dry weather — watering may be needed every 7–10 days, and in severe drought even more often.
• On sandy soils — water more often because water drains away quickly; on clay soils — less often, but make sure water does not stagnate on the surface.

Important: Remember that the aim of watering is not to “wet” the surface but to soak the entire root zone. A deep watering once every 10–14 days is much more effective than daily wetting of the topsoil.

How to Calculate the Watering Rate

There is a proven agronomic method called the “water budget” (Schwankl et al., 2007). It sounds complicated, but it is actually simple arithmetic. The idea is to replenish the moisture that the tree has already used from the “soil reservoir”.

The irrigation rate (in litres or cubic metres per tree) can be calculated using a simple formula:

Irrigation rate = wetting depth × tree feeding area × moisture difference

Let’s break down each component.

Wetting Depth

This is the main reference point. For pear, the bulk of absorbing roots lies in the soil layer from 20 to 50–60 centimetres (Westwood, 1993). This is the layer we should moisten with each irrigation.

• Young tree (up to 5 years): roots are still shallow; wetting a layer of 30–40 cm is sufficient. Rate: 30–50 litres of water.
• Mature fruiting tree: roots go down to 50–80 cm. Rate: from 70 to 150 litres per watering, depending on crown size and soil type. On sandy soils, water goes deeper but evaporates faster, so watering needs to be more frequent.

How to check if you are wetting to the right depth? After watering, wait 2–3 hours and dig a hole in the root zone with a spade. If the soil at 40–50 cm is moist, you did it right. If it is dry, the watering was shallow and insufficient.

Soil Moisture Difference

Here the concept of pre‑irrigation moisture threshold comes into play. Pear grows best when soil moisture in the root zone does not fall below 70–75% of field capacity (Reil, 2007). Simply put, you should not let the soil dry out completely—that causes severe stress. Start watering when the soil at 30–40 cm depth begins to crumble in your hand.

In practice, this means that in one watering you need to replenish about 50–60% of the total moisture that the soil can hold in the root zone. That is why watering must be generous—it must “top up” the soil reservoir to the optimal level.

Approximate Calculation of the Rate

Let’s use specific data from agronomic literature (Schwankl et al., 2007).

Take a mature pear tree aged 10–15 years. Root zone depth — 50 cm (0.5 m). Feeding area per tree at spacing 6 × 4 m is 24 m². We want to wet the soil to field capacity.

Assume that on loamy soil, available moisture is about 15–18% of soil mass. Considering bulk density (about 1.4 g/cm³), we get that to wet 1 m² to a depth of 50 cm requires about 100–120 litres of water. For one tree with a feeding area of 24 m², this gives a rate of about 240–280 litres per full irrigation (Schwankl et al., 2007).

In reality, on clay soils the rate may be slightly lower (water holds better), and on sandy soils higher (water drains quickly). Also, in the height of summer, during fruit filling, water consumption by the tree is maximal—up to 3–4 m³ per week. This may require more frequent watering with smaller single doses to avoid waterlogging but prevent drying out (Mandal, 2021).

Practical Method: “Bucket and Spade”

For the home gardener, precise calculations are good, but in practice it is much simpler to rely on tactile sensations and watering time. Here is a simple method:

1. Determine the infiltration rate. Time how many minutes it takes for a bucket of water (10 litres) poured under the tree to completely soak in. For loam, this is usually 3–5 minutes, for sand — 1–2 minutes.

2. Water slowly. If you pour too fast, water simply runs off the surface and evaporates without reaching the roots. It is better to water with a hose fitted with a diffuser or pour water into the root zone in several stages, allowing each previous bucket to soak in.

3. Control with a spade. The main benchmark is wetting depth. It should be at least 40–50 cm for a mature tree. Roughly this corresponds to 5–7 buckets (50–70 litres) on sandy soil and 8–10 buckets (80–100 litres) on loam, but these figures may vary depending on weather and tree size. The key is to check the result with a spade.

Soil Moisture Monitoring

Regular monitoring is the key to success. The simplest way is the tactile method.

• Optimal moisture: Soil from 30–40 cm depth, when squeezed in a fist, should form a firm ball that does not crumble but does not leave dirty marks on the palm.
• Time to water: If the ball crumbles under light pressure — it’s time to water.
• Waterlogging: If water exudes from the soil when squeezed or it turns to mud — delay watering, otherwise roots will suffocate from lack of oxygen.

Dependence on Weather and Season

The watering rate should always be adjusted to specific weather conditions.

• In hot and dry weather the pear’s water need increases 1.5–2 times.
• In cool and rainy weather the rate can be reduced or watering cancelled altogether.
• During fruit filling (one month before harvest) the need is maximal, but 1–2 weeks before harvest it is best to stop watering completely — otherwise fruits will be watery and store poorly.

Golden rule: It is better to water deeply once than to moisten lightly three times. Deep watering that wets to 50–60 cm is the only way to supply the tree with moisture during dry spells and to encourage deep roots, which make the pear more drought‑tolerant.

1. Basin / Root‑Zone Watering

This is the most traditional and simple method, suitable for most home gardeners.

Essence: Water is applied directly to the root zone — the area under the tree canopy projection. This is where the bulk of absorbing roots are located.

How to organise it properly:

• Build a soil ridge around the perimeter of the root zone, 15–20 cm high. This creates a natural “bowl” to hold water and prevent runoff.
• Water slowly, allowing water to soak in. If you pour too fast, water will spread over the surface without reaching deep roots.
• For a large tree, the root zone area can be 10–15 m². Watering such an area manually is labour‑intensive, but for 2–4 trees it is quite feasible.

When to use: For young saplings and small orchards where installing complex systems is not possible.

Drawbacks: Labour‑intensive for many trees. On clay soils water may pond on the surface; on sandy soils it may drain too quickly without fully saturating the root zone (Schwankl, 2007).

2. Drip Irrigation

This is the most efficient and economical method, widely used in commercial orchards and by advanced home gardeners.

Essence: Water is supplied in small portions (drops) directly to the root zone through a system of tubes and emitters. Water is applied slowly, so it completely soaks in without losses to evaporation and surface runoff (Westwood, 1993).

How it works:

• Drip lines are connected to the main hose and laid along the tree rows.
• Emitters (drippers) are placed at 2–3 points per tree to ensure uniform wetting.
• Water is delivered at low pressure and is used sparingly — from 4 to 10 litres per hour per emitter.

Advantages:

• Water savings — up to 40–60% compared to sprinkler irrigation (Schwankl et al., 2007).
• Constant moisture in the root zone, especially important for pear during critical periods.
• Possibility of fertigation — applying liquid fertilisers directly to the root zone (Mandal, 2021).
• Reduced weed growth — only the root zone is wetted.
• Minimal evaporation losses — water goes straight to the roots.

Drawbacks:

• Higher equipment cost.
• Risk of emitter clogging — requires filters and regular monitoring.
• Limited wetting area — not suitable for blanket irrigation of large areas without a systematic layout.

When to use: Ideal for any orchard — from 5 to 500 trees. Especially recommended in arid regions and on sandy soils where water quickly leaves the top layer. Drip irrigation is also effective on slopes and uneven terrain.

3. Sprinkler Irrigation

This method sprays water over or under the canopy in fine droplets, mimicking rain.

Essence: Water is delivered through sprinkler heads (sprinklers) that can be placed on the soil surface or on supports above the trees.

Advantages:

• Effective wetting of large areas — suitable for orchards of 1 ha and more.
• Cleans the canopy of dust and improves photosynthesis.
• Can be used for frost protection — during critical frost events, sprinkling raises temperature through the heat released when water freezes (Snyder, 2007).
• Creates a favourable microclimate in hot weather.

Drawbacks:

• High water consumption — some evaporates without reaching roots.
• Risk of fungal diseases if the canopy is excessively wetted.
• Energy‑intensive — requires pumping equipment.
• Non‑uniform water distribution — edges get less water than the centre.

When to use: For large orchards with adequate water supply. Particularly useful in regions with dry, hot climates where canopy cooling and frost protection are needed. For home gardeners with 5–10 ares and 5–10 trees, this method is often overkill (Schwankl et al., 2007).

4. Subsurface (Underground) Irrigation

This is a modern, high‑tech method where water is delivered directly to the root zone, bypassing the surface.

Essence: Porous pipes or special moisteners are buried at a depth of 40–60 cm, and water is supplied directly to the main root zone (Westwood, 1993).

Advantages:

• Maximum efficiency — no evaporation from the surface and no runoff losses.
• Roots grow deeper, making the tree more drought‑tolerant.
• Soil surface remains loose, preserving soil structure.
• Minimal risk of fungal diseases.

Drawbacks:

• Installation and maintenance complexity — pipes can clog with roots or silt.
• High equipment and labour costs.
• Need for precise system design.

When to use: For professional orchards with many trees, where water savings and minimising labour justify the investment. For amateur gardens, it is too expensive and complex.

5. Furrow Irrigation

This method is most often used in commercial orchards on flat, well‑graded land.

Essence: Shallow furrows (channels) are cut between tree rows, and water is run along them. Watering is done by “flooding” the inter‑rows or by running water through the furrows.

Advantages:

• Can be used on large areas with cheap water supply.
• Relatively low equipment cost.

Drawbacks:

• High water consumption and evaporation losses.
• Requires perfectly graded land — any slope causes water to run off.
• Soil compaction in inter‑rows.
• May cause waterlogging in the root zone.

When to use: Only makes sense in large flat orchards with very cheap water. For small farms, it is generally not recommended.

Which Method to Choose?

The choice depends on three key factors:

1. Size of your orchard. For 5–10 trees, hand watering or a simple drip kit is enough. For a commercial orchard — drip or sprinkler.

2. Water availability. If water is expensive or scarce, use drip irrigation (80–95% efficiency). If water is abundant and cheap, you can use sprinkler (60–80%) or even furrow (50–70%) (Schwankl et al., 2007).

3. Climate and soil. On sandy soils and in dry climates, the most effective choice is drip irrigation. On clays, you can use sprinkler or furrow, but with careful control to avoid overwatering.

Tip: For most home gardeners and small farms, drip irrigation is the best choice. It gives the maximum return per litre of water, allows automation, and ensures stable moisture in the root zone. Even a simple system with drippers for 10–20 trees pays for itself in the second year through increased yield and fruit quality (Mandal, 2021).

1. Mulching

Mulching is the most effective and accessible moisture‑retention method for any gardener. A layer of mulch (organic or inorganic material) on the soil surface acts as a protective barrier that:

• Reduces evaporation — mulch breaks the capillary rise of water to the surface, where it evaporates.
• Regulates soil temperature — in summer the soil under mulch does not overheat (by 3–5 °C), and in winter it freezes more slowly.
• Suppresses weed growth, which compete with the tree for water and nutrients.
• Preserves soil structure, preventing compaction and crust formation after watering (Potapov et al., 2000).

Types of Mulch

1. Organic mulch (straw, hay, mown grass, sawdust, wood chips, peat, compost, leaf litter).

• Advantages: as it decomposes, it enriches the soil with organic matter, improves structure, and increases fertility. Earthworms thrive in it, loosening the soil.
• Drawbacks: can attract rodents if not packed down; decomposes over time and needs renewal.
• Application specifics: optimal layer — 8–10 cm. Straw and hay should be dry to prevent rotting. Sawdust and chips are best used after composting, as fresh sawdust can tie up nitrogen in the soil (McGourty & Elmore, 2007).

2. Inorganic mulch (black or white plastic film, agrotextile, geotextile, roofing felt).

• Advantages: most effective at suppressing weeds and retaining moisture; does not decompose, lasts several years.
• Drawbacks: does not improve soil fertility; can overheat soil in the sun (partly mitigated by using light‑coloured mulch); requires careful laying and fixing.
• Application specifics: black film is best used in regions with cool summers, light‑coloured in hot regions. When laying, always leave an air gap around the trunk to avoid bark collar rot.

3. Combined mulch — organic mulch on top, with geotextile underneath.

• Advantages: gives maximum effect — geotextile reliably suppresses weeds, while the organic layer above protects it from UV and improves fertility.
• Drawbacks: the most expensive option, but also the most durable.

How to mulch:

• In spring, when the soil has warmed up but is still sufficiently moist (after watering), spread a layer of mulch 8–10 cm thick over the entire crown projection or in the root zone.
• Do not place mulch right against the trunk — leave a gap of 10–15 cm for air circulation. This prevents bark collar rot and development of rots (McGourty & Elmore, 2007).
• In autumn, organic mulch can be left for winter — it protects roots from freezing, and in spring it can be worked into the soil or renewed on top.

2. Soil Management in the Root Zone

Proper soil management is no less important for moisture retention than mulching. The main task is to keep the soil loose so it absorbs water well and breathes, but does not dry out excessively.

“Black fallow” for young trees

For young saplings (first 3–4 years), the best option is to keep the root zone in “black fallow” — constant cultivation without vegetation (Potapov et al., 2000).

• Cultivation breaks the capillaries through which moisture rises to the surface and evaporates.
• No weeds means all moisture and nutrients go to the tree, not to weeds.
• Cultivation depth — 8–10 cm, to avoid damaging surface roots.
• Frequency — after each watering or rain, as soon as the soil dries slightly. This prevents crust formation that impedes air and water penetration.

Important: cultivation should not be deep, otherwise you damage roots, especially on dwarf rootstocks. Better to use a hoe or rake, not a spade.

Grassed strips for mature trees

For mature fruiting trees, keeping the soil under black fallow is often impractical — it requires too much labour. It is much more effective to use grassing (sowing herbs) in the inter‑rows, leaving the root zone clean (Potapov et al., 2000).

• Grassing reduces water erosion, improves soil structure, and enriches it with organic matter.
• Grasses, especially cereals, create a dense sod that shades the soil and reduces evaporation.
• However, in arid regions grass can strongly compete with the tree for water. In such cases, it is recommended to mow the grass and leave it as mulch, combining the benefits of grassing and mulching.

Recommendation: In the inter‑rows of a mature orchard, especially under adequate moisture, it is better to leave grassing and mulch the root zones. On sites with limited water, prefer black fallow or mulching (McGourty & Elmore, 2007).

3. Reducing Evaporation by Other Means

Apart from mulching and soil management, there are other ways to reduce moisture loss.

Wind protection

Wind greatly increases evaporation from the soil surface and leaves. If your orchard is in an open location, it is advisable to create protective plantings — windbreaks or shelterbelts. They reduce wind speed and decrease soil desiccation (Westwood, 1993).

Water in the evening or morning

Watering in the hot midday sun loses up to 30–50% of water because a significant portion evaporates from the surface before soaking in. Water in the morning (before 10:00) or evening (after 18:00) — then the water has time to soak in, and evaporation is minimal. This is especially important for sprinkler irrigation, but applies to other methods too (Snyder, 2007).

Use drip irrigation

This method itself ensures minimal evaporation losses, as water is delivered directly to the roots (Schwankl et al., 2007). Combined with mulching, drip irrigation gives maximum water use efficiency.

Practical Recommendations

1. For young orchards (1–4 years): Keep the root zone in black fallow — cultivate regularly after watering and always mulch with a layer of 5–8 cm. This stimulates deep root growth.

2. For mature fruiting orchards: Mulch the root zones with organic matter (layer 8–10 cm). In inter‑rows, if moisture is adequate, you can leave grassing and mow regularly, leaving clippings in place as additional mulch.

3. In arid regions: Focus heavily on mulching. Black film or agrotextile can be ideal, as they virtually eliminate evaporation and weed growth.

4. Water deeply and infrequently: This encourages roots to grow deep, making the tree more drought‑tolerant. Shallow frequent watering keeps roots in the top layer and increases dependence on irrigation (Potapov et al., 2000).

Golden rule: The cost of mulch, film, or agrotextile pays for itself within a single season through savings on water, labour, and increased yield. Mulching is not extra work, but an investment in future harvests and your own time.

In the final chapter, we will discuss typical mistakes in pear watering that even experienced gardeners often make.

1. Shallow Watering

This is the most common mistake, especially among novice gardeners. It consists of watering “for show,” wetting only the top 5–10 centimetres of soil.

What it looks like: The gardener takes a watering can or hose and quickly sprinkles the root zone, thinking that is enough. Water runs off the surface without penetrating deep, and evaporates within 1–2 days.

Why it is harmful:

• Roots stay near the surface. Pear is a deep‑rooted tree. If you water only shallowly, roots will not grow downward but remain in the top soil layer (Westwood, 1993). Such a tree becomes extremely dependent on irrigation — if you miss a couple of days, it starts suffering from drought.
• Reduced drought tolerance. A tree with surface roots cannot extract moisture from deep layers during dry periods, so it will constantly need watering.
• Poor fruit quality. Shallow watering does not provide adequate nutrition and moisture during fruit filling, so pears grow small and dry (Shackel, 2007).

How to avoid: Every watering should be aimed at wetting the soil to at least 40–50 cm for mature trees. Check depth with a spade — if the soil at that depth remains dry, you are watering too little or too often.

2. Overwatering

The opposite mistake, but equally dangerous. Some gardeners think “the more water, the better” and flood the trees excessively.

What it looks like: Water ponds in the root zone, soil turns boggy, and a crust forms on the surface.

Why it is harmful:

• Roots suffocate. Pear roots, like all plant roots, need oxygen in soil pores for respiration. When waterlogged, all pores are filled with water, and roots cannot breathe. They start to die, weakening the tree (Westwood, 1993).
• Creates conditions for disease. Constant wetness is an ideal environment for fungal diseases (Phytophthora, root rot, powdery mildew). These are especially dangerous for young trees (Mandal, 2021).
• Leaches nutrients. Excess water washes nitrogen, potassium, and other minerals from the root zone, making the tree hungry.
• Reduces winter hardiness. Trees that have been “bathing” in water all summer do not properly prepare for winter (their tissues remain too succulent and do not ripen well). As a result, they suffer more from winter frosts (Potapov et al., 2000).

How to avoid: Water only when the soil at 30–40 cm depth has started to dry. Do not allow prolonged water stagnation in the root zone. On heavy clay soils with poor drainage, water less often and with smaller doses to allow water to soak in.

3. Watering at the Wrong Time

This mistake is about ignoring the tree’s biological rhythms and weather conditions.

Examples:

• Watering during flowering in cool weather. In rainy, cool weather, additional watering can cause flower rot and poor pollination.
• Skipping watering during drought. Sometimes gardeners think “trees will survive somehow.” But pear during drought (especially in the fruit‑filling phase) without water can drop up to 50% of ovaries.
• Watering in cold weather. In early summer or autumn, when nights are cold, evening watering can sharply cool the root system, especially on clay soils, and provoke root rots.
• Watering a week before harvest. Excess water at this time makes fruits watery, prone to cracking, and poor‑storing. This is especially true for pears ripening in late summer–early autumn.

How to avoid: Base your decisions on the weather. If it rains — delay watering. If it is hot — water more often. In cool weather, water less often to avoid chilling the soil. And always remember the critical periods — they require your close attention.

4. Improper Mulching

Mulching is a great method, but mistakes can be made here too.

Errors:

• Mulch right against the trunk. If mulch is placed flush against the bark, it creates a greenhouse effect at the base of the trunk, which can lead to bark collar rot and the development of rots (McGourty & Elmore, 2007). This is especially dangerous for young trees.
• Too thick a layer of fresh mulch. A thick layer of fresh grass or straw (more than 15–20 cm) can impede air access to roots and even start to rot, releasing toxic substances for the plant.
• Using uncomposted materials. Fresh sawdust and chips can “tie up” nitrogen from the soil during decomposition, leading to nitrogen starvation. They are better used only after composting.

How to avoid: Leave a “ring” of soil with a radius of 10–15 cm around the trunk for air access. Spread mulch evenly in a layer of 8–10 cm, not thicker. For young trees, use well‑rotted sawdust, peat, compost, or ready‑made agrotextile.

5. Ignoring Soil Type

Often gardeners water all trees alike, without considering that water needs on clay and sand are completely different.

How it manifests: On sandy soil, they water as infrequently as on clay, so water simply drains away without saturating the roots. Or conversely, on clay they water as often as on sand, causing waterlogging.

Why it matters: On sandy soils, water does not hold and drains quickly, so you need to water more often but with smaller amounts (to allow soaking in). On clay soils, water stagnates, so water less often but more abundantly, to wet the entire root zone (Schwankl et al., 2007).

How to avoid: Analyse your soil type. If you have sand — water more often, but do not allow ponding. If clay — water less often, but do not skimp on water for deep wetting. And always check wetting depth with a spade.

6. Watering in Hot Sun

This mistake leads to huge water losses.

What it looks like: The gardener waters trees at noon when the sun is blazing.

Why it is harmful: 30 to 50% of water simply evaporates from the soil surface and leaves without reaching the roots. With sprinkling, water droplets on leaves act like lenses and can cause burns (Snyder, 2007). In addition, sudden cooling of roots in heat is a stress for the tree.

How to avoid: Water only in the morning (before 10:00) or evening (after 18:00). At these times evaporation is minimal, and almost all water reaches the roots.

7. Underestimating Pre‑Winter and Pre‑Bloom Irrigation

Many gardeners skip autumn and early spring waterings, considering them optional.

Why it is harmful: Autumn pre‑winter irrigation (two weeks before frost) increases winter hardiness because moist soil freezes more slowly and roots are protected from freezing (Potapov et al., 2000). Spring pre‑bloom irrigation supplies the tree with moisture for flower and ovary formation.

How to avoid: Always carry out pre‑winter irrigation in a dry autumn. It helps the tree survive winter better and prepare for the next season.

Summary: Balance and Control

Watering pears is an art of balance. Lack of moisture is as dangerous as excess. The main principle: better to underwater than to overwater, but at the same time avoid prolonged drying of the soil during critical periods.

Regularly check soil moisture with a spade or probe, adapt your schedule to weather and soil type, and your orchard will reward you with a generous harvest of juicy, sweet fruits.