Weeding operation has to be done during August-September. Weeding can be done manually or by using herbicide. The recommended herbicide is Glyphosate 41 SL (@ 800 ml/acre).
Organic manure @ 10 kg/plant is recommended in every year. Lime or dolomite has to be applied in acid soils two weeks ahead of fertilizer application.
The recommended fertilizer has to be applied after weeding. Broadcast the fertilizer within an area of 0.5 to 3.0 m around the tree and at 15 cm depth and cover it with soil.
Mulch the plant base with dry leaves to reduce sun-scorch to tender plants.
For adult plants, 200 liter of water per tree may be applied at 15 days interval during summer.
Remove the sprouts from rootstock portion of the graft. The new growth from below the graft union should not be encouraged.
Proper staking of the plants is required to avoid lodging due to wind during the initial years of planting.
Initial training and pruning of young cashew plants during the first 3-4 years is essential for providing proper shape. The plants should be allowed to grow by maintaining a single stem up to 0.75-1.00 m from ground level.
Removing side shoots or side branches should be done. Weak and criss cross branches should be removed. Pruning should be done in May-June. This allows proper growth of the canopy and receipt of adequate sunlight on all the branches.
The flower panicles emerging from the grafts during the first and second year of planting should also be removed (de-blossoming). The plants should be allowed to flower and fruit only from the third year onwards.
Pineapple is the most profitable intercrop in cashew plantation in the early stages of growth. Ginger, lemongrass and tapioca are also suitable as intercrops.
Top working can be done to rejuvenate unproductive and senile cashew trees. The unproductive trees are to be beheaded at a height of 0.75 to 1.00 m from ground level. From the emerging sprouts new plants are grafted. Best season for top working is May to September.