Budding Techniques for Aonla: How to Master Patch and Ring Budding

Aonla (Emblica officinalis Gaertn.), commonly known as Indian gooseberry, is one of the most commercially valuable fruit crops in the Indian subcontinent. Growing it from seeds is straightforward, but seed-grown trees are unpredictable – they take 6 to 8 years to start bearing fruit and rarely match the quality of their parent. Budding solves both problems. By transferring a single bud from an elite variety onto a vigorous seedling rootstock, you get a tree that bears fruit in 3 to 4 years and produces fruit identical to the parent. Among all propagation methods tested for aonla, patch budding and modified ring budding stand out as the most reliable – with success rates reaching 85 to 100% under the right conditions. Here is a practical, step-by-step look at how both techniques work.

Why budding works so well for aonla 🔗

Budding is a form of grafting where a single vegetative bud – not a shoot or branch – is taken from a desirable variety (the scion) and attached to the stem of a young seedling (the rootstock). The two tissues fuse through callus formation, a process where living cells from both plants multiply and interlock, eventually forming a continuous vascular system. Once the union is established, the rootstock is cut above the bud, and the bud grows into a new shoot that carries the full genetic characteristics of the source variety.

Aonla is particularly well-suited to budding because its bark is relatively thick and peels away cleanly from the wood when the plant is in active growth – a condition horticulturists call the “bark slipping” stage. This makes it easy to lift the bark, insert the scion bud, and achieve close cambial contact, which is the biological requirement for a successful union. According to a standardization study published in the International Journal of Pure & Applied Bioscience, patch budding during the rainy season with cultivar NA-7 produced the highest success and survivability rates among all propagation methods tested, including cleft grafting and T-budding.

Preparing the rootstock 🔗

The quality of your rootstock determines the long-term health and productivity of the budded plant. According to the National Horticulture Board of India, six-month to one-year-old aonla seedlings are used as rootstock for budding. The stem should be at pencil thickness – roughly 8 to 12 mm in diameter – with uniform, vigorous growth and no signs of disease or pest damage.

Key steps in rootstock preparation 🔗

Seeds sown in March-April yield seedlings that are ready for budding by July or September of the same year. About 15 to 20 days before budding, slightly reduce irrigation to make the bark more pliable and easier to separate from the underlying wood. The plants should remain healthy and turgid – the goal is pliability, not stress. Select a budding height of 15 to 20 cm above ground level. This keeps the bud union above the soil surface, which is important because burying the union can cause the scion to develop its own roots, negating the benefits of the rootstock. Clean the selected area on the rootstock stem with a damp cloth before making any cuts to reduce contamination risk.

Selecting and preparing scion wood 🔗

Scion wood must come from a known high-performing aonla tree – one that is a prolific bearer, produces fruits of desirable size and quality, and is free from pest or disease incidence. The NHB guidelines are clear on this: scion shoots should always be selected from mother plants that are healthy and vigorous bearers.

Choose current season’s shoots that are semi-mature – neither too tender nor fully hardened. The buds on these shoots should be plump, well-developed, and clearly visible. Avoid shoots from the terminal ends where buds are immature, and avoid shoots from trees under drought stress or heavy pest pressure, as these have lower bud viability. Once cut, remove the leaves immediately but retain a short stub of the petiole (leaf stalk) – this stub serves as a handle during bud insertion. Michigan State University Extension advises that exposed cut surfaces dry out rapidly, so scion shoots should be wrapped in a moist cloth and used as soon as possible. For aonla specifically, research indicates that scion shoots can be safely stored and transported for 5 to 7 days when kept moist and cool.

Patch budding: the most widely used method 🔗

Patch budding is the commercially preferred method for aonla propagation across major growing states including Uttar Pradesh, Gujarat, Rajasthan, and Maharashtra. It works by replacing a rectangular section of rootstock bark with an identically sized piece of scion bark containing a healthy bud. The larger contact area between the two tissues promotes faster and stronger union formation.

Step-by-step procedure 🔗

Using a sharp budding knife, make two horizontal cuts about 2.5 cm apart on the smooth surface of the rootstock, then join them with two vertical cuts to create a rectangular window. Carefully lift and remove this rectangular piece of bark. Now, cut an identically sized rectangular patch – approximately 2.5 cm long and 1.5 cm wide – from the scion shoot, making sure the patch contains one plump, healthy bud at its centre. Place the scion patch onto the exposed rootstock surface in the same orientation as it was on the scion shoot. It is essential to maintain polarity – the bud must face the same direction it did on the parent plant to ensure proper vascular alignment.

Once placed, wrap the union firmly with a 300-400 gauge polythene strip, covering all cut surfaces while leaving the bud itself exposed. The wrapping must be tight enough to eliminate air gaps but not so tight that it cuts into the bark. Callus formation typically begins between the 5th and 8th day after budding, and cambial bridges form within 12 to 15 days. The bud union is generally complete within 6 to 7 weeks under normal growing conditions.

A practical indicator of success: if the retained petiole stub falls off cleanly after 2 to 3 weeks, the bud union has formed. If the stub shrivels and darkens while remaining attached, the budding has failed and should be repeated.

Modified ring budding: maximum contact, stronger initial growth 🔗

Modified ring budding is a variation of patch budding that provides 360-degree contact between the scion and rootstock – theoretically maximising the surface area available for callus formation and vascular continuity. In this method, two vertical cuts are made on the smooth surface of the rootstock, and one transverse cut is placed above them to join them. The bark flap is then carefully lifted to receive the bud patch from the scion shoot.

How it differs from patch budding 🔗

While patch budding removes a rectangular window of bark entirely, modified ring budding retains a narrow strip of connecting bark on the rootstock. This connection keeps the rootstock viable even if the inserted bud fails – giving you a built-in safety margin. However, this method requires a higher level of skill to execute cleanly. The scion ring must match the rootstock dimensions precisely, and any gap between the tissues reduces the success rate. It also uses more scion material per bud than patch budding, which becomes a consideration when propagating rare or limited varieties.

For propagators with ample scion wood and some hands-on experience, modified ring budding often produces more vigorous initial growth compared to patch budding due to the greater surface contact. Both methods, when correctly performed, achieve very high success rates in aonla, making the choice largely dependent on available skill level and scion material quantity.

Timing: when to bud for the best results 🔗

Timing is arguably the single most critical variable in budding success. Both patch and modified ring budding depend on the rootstock and scion being in the active growth stage, when the cambium is dividing rapidly and the bark slips easily from the wood.

Under north Indian conditions, patch and modified ring budding carried out from mid-May to September gives 60 to 90% success. July is considered the optimal month for both techniques. In south India, the budding window extends across 8 to 10 months of the year, given the more consistent rainfall and humidity. Research published in the International Journal of Pure & Applied Bioscience confirms that patch budding performed between 15 and 21 August showed the highest percentage of success and maximum new shoot development 90 days after propagation.

Within the budding season, always prefer early morning or late evening hours for the actual operation. Temperatures are lower, humidity is higher, and cut surfaces are less prone to drying out before you can complete the wrapping. Avoid budding during heavy rain – water entering the union before it heals leads to rotting – and avoid periods of extreme dry heat, which accelerates desiccation of exposed cambial tissue.

Post-budding care and what to watch for 🔗

After wrapping the bud, place the plant in a shaded, humid environment if possible. Avoid direct harsh sunlight on the bud union for the first two weeks. Once the bud begins swelling and shows signs of growth – usually 4 to 6 weeks after budding – gradually cut back the rootstock growth above the bud union. Do not remove it all at once; reduce it in stages over two to three weeks. This gradual reduction redirects the plant’s energy toward the new bud without causing shock.

Remove any rootstock shoots that sprout below the bud union immediately, as these will compete with the scion bud and, if left unchecked, can eventually overtake it. Once the scion shoot reaches 10 to 15 cm, the polythene wrapping can be cut away carefully to prevent it from girdling the growing stem. Budded aonla plants are ready for field planting 7 to 10 m apart during July-August or February, and under well-managed conditions, a vegetatively propagated aonla tree can bear fruit for 60 to 75 years.

Factors that affect budding success 🔗

Even with correct technique, several factors influence outcomes. Humidity is the most important environmental variable – high relative humidity accelerates callus formation and prevents the exposed cambium from drying out. Temperature between 25°C and 35°C supports active cambium division. Below or above this range, healing slows significantly. The health of both plants matters equally: nutrient-deficient rootstocks heal slowly, and scion wood from stressed trees carries compromised buds. Ensure your rootstock seedlings have been well-fertilised in the weeks leading up to budding, and collect scion wood only from trees in good physiological condition. Finally, tool hygiene – using clean, sharp knives – reduces contamination risk and produces clean cuts that heal faster.

What do you think? Given that July is the ideal month for aonla budding in north India but growers in the south can propagate for nearly 8 to 10 months a year, how might this regional flexibility influence commercial nursery practices and aonla availability across different markets? And with success rates as high as 85 to 100% achievable through patch budding, what do you think is the most common reason nurseries still end up with failed budding batches?

References

1. https://scialert.net/fulltext/?doi=ajft.2008.13.23
2. https://www.agriculture2u.com/2025/01/propagation-of-plant-through-budding.html
3. https://www.semanticscholar.org/paper/Standardization-of-Propagation-Techniques-in-of-Jalal/52d001493590c5b74c82afabf349bda0ba6f61f5
4. https://nhb.gov.in/hindi/guideline/Handbook_of_Seed_and_Planting_Material_Testing_Manuals.pdf
5. https://www.slideshare.net/slideshow/aonla-production-technology/150917256
6. https://www.canr.msu.edu/news/selecting_and_storing_scion_wood_for_grafting
7. https://www.horticultureguruji.in/propagation-method-budding/
8. https://www.ramauniversity.ac.in/online-study-material/agriculture/msc/mschorticulture/isemester/plantpropagationandnurserymanagement/lecture-8.pdf