Distortion in grape seed
Pink Sum-
Generally, pink beads start to appear as the water starts to settle in the grapes. Such beads are somewhat smaller in size. Grapes ripen gradually. As time passes, the color becomes darker. Although these grapes look attractive at first, by the time they reach the market, they turn deep red and black, losing their luster.
Causes of Pink Sum:
Pink flowers are caused by a substance called anthocyanin. It is also found in many fruits, flowers and leaves. It is found in the vascular sap of the cell. If this liquid is added to a more yellow one, its color becomes darker. So some flowers add steam of ammonium hydroxide to deepen the color.
By graphing the chemical process of anthocyanin on paper, it was found that there are four types of anthocyanin.
1) Cyanadin, 2) Malvidin, 3) Pinonidin, 4) Manoglucose, in which Pinonidin is more abundant. The rest are very small. Mainly the action of natural four factors is on the formation of anthocyanins. Fluctuations in temperature, strong sunlight, lack of nitrogen, lack of phosphorus. When sugars are rapidly produced in plant cells, they stimulate the production of anthocyanins. With the supply of sodium, sugar is converted into nitrogenous products and the intensity of sugar decreases. At the same time, anthocyanin decreases. Anthocyanins increase with the use of ether during seeding.
Solution Plan:
1) Add 250 grams of ascorbic acid in 200 liters of water and spray. The next day, add 500 grams of sodium diethyl dithocarbomat per 200 liters of water and spray. 2-3 such sprays should be done at an interval of 8 days, but the per acre cost of these chemicals is high.
2) Spraying 5 grams of urea and 2 grams of boric acid per 1 liter of water helps to reduce the shendari mani.
3) Soil application of 13 kg borax per acre after April pruning can significantly reduce this disease.
Beads staying green : (beard)
In this disorder, after the grapes begin to ripen, some beads from the top of the bunch and from the branches do not ripen and those beads shrivel and fall off. As the bunch matures, the prevalence of this disorder increases. Beads suffering from such deformities are very rare. Also it does not contain gar. This malformation is widely seen in the cultivar Thompson seedless. Reasons : 1) If the vines are water stressed during the bud growth period. 2) Deficiency of elements like boron. 3) Excessive use of chemical fertilizers. 4) In a garden where there is no proper drainage and the amount of limestone is high, this disorder is seen to a large extent.
5) If the supply of calcium to the clusters decreases.
6) Excessive bunching on the vines due to not feeding all the bunches properly
7) If the leaves are kept low in front of the bunch.
Remedy 1) After rough pruning the number of canes per vine should be limited.
2) The number of bunches on the vine should be limited after October pruning.
3) The top of the bunch should be removed and thinned on time.
4) G. A. G should be used carefully and in increased quantity. A. Avoid the temptation to use it.
5) Water should be properly drained in the garden.
6) Adequate supply of elements like potassium, boron, calcium and magnesium.
7) If the leaves are kept short in front of the pods, there is shortage of food for the pods and the pods do not get proper nutrition.
8) Proper amount of micronutrients should be supplied from leaves as well as soil. With proper management we can avoid grape seed deformities.
author-
Mr. Subhash Chandra Karale Sir
Director, SV Agro Solutions