ANALYTICAL SERVICES
Leaf / Tissue sample analysis
To ensure optimum yields, tissue/leaf sample analysis is the tool to negotiate any nutrient deficiencies during the growth period of the crop, upon which the same could be supplemented through sprays or fertigation so that, in the final produce adequate mineral nutrients is maintained and ensured. For value added crops like grapes, pomegranate, export-oriented fruit & vegetable crops, aromatic crops and such other crops have to be monitored closely for their growth wherein each and every nutrient at different stages of growth will have their impact. Hence analysing the leaf/tissue at specified stages of growth will provide the Grower an intrinsic understanding regarding the quality of the produce. Thereby one can ensure the administration of the deficient nutrients timely and bring out the best quality produce.
Plant sample analysis
Analysis of plants especially leaf sample, shows how best the plant has taken up the supplemented nutrients and subsequently the assimilation capacity of the same for its best metabolism activities at different stages of growth. It is advised to take the leaf samples, when plant is at the transitional or reproductive stage.
The stage of sampling, portion of plant tissue varies from species to species. Avoid the plants which are diseased, under moisture stress, infested by the pests.
When to sample
It is advised to take the leaf samples, when plant is at transitional or reproductive stage or during resting stage also for perennial crops.
What to sample
> For most of the crops, leaf tissue is analysed to know the nutrient concentration during that stage of growth period.
> For Grapes, instead of whole leaf, 5th petiole from base at bud differentiation for yield, and petiole opposite to bloom is sampled to assess quality. Further fertilizer schedules could be planned based on the analysis data and co-relation with soil analysis data..
How to take representative leaf sample
> 2-4 leaves are taken, from 20-40 plants randomly.
> All the leaf samples are collected in a clean plastic bag. It is then washed with clean water and air dried before packing in paper cover and repacked in a plastic cover with small holes for ventilation. The whole packet is then sent to the nearby lab for analysis.
> Care should be taken to remove all possible moisture to avoid fungal development or rotting of the sample.
Crop | Plant part to be analysed |
Sugarcane | 3rd leaf from top, after 4-5 months of planting and during Great Grand Growth period. |
Coffee | 3rd and 4rh pair of leaf from apex of lateral shoots, soon after Blossom and or fruit developmental stage. |
Tomato | Leaves adjacent to inflorescence (mid-bloom) |
Grapes | 5th petiole from base at bud differentiation for yield, and petiole opposite to bloom for quality |
Mango | Leaf with petiole (4-7 months old leaves) from middle of the shoot |
Pomegranate | 8th leaf from apex at bud differentiation and /or at fruit developmental stage |
Papaya | 6th petiole from apex, six months after planting (flowering/fruiting overlapping stage) |
Citrus fruits | 3-5 months old leaves from new flush, 1st leaf of the shoot. |
Guava | 3rd pair of recently matured leaves, at bloom. |
Cashew | 4th leaf from tip of matured branches, at beginning of flowering and or at fruit developmental stage. |
Plant Tissue Sample Analysis
T-1 | 12 essential nutrients | To mitigate any deficiencies crept in during the growth stages |
Kindly note that there is a definite process for collection of a composite sample of soil and/or leaf, before it can be sent to the laboratory for analysis. A wrong way of sampling may distort result and mislead you. It is strongly advocated to be in touch with our local representative of GMN Consultancy or our Helpline, to obtain details of sampling procedure, analysis charges, sending sample to the lab; and technical support to be provided by our field team for explaining analytical report and ensuring adoption of suggested recommendations