Published Paper Details:

The article considers the extraction of different types of pigments of Pigeon pea with an insecticide (TAFGOR) in a laboratory condition. Pigeon pea is a perennial, tropical legume grown mainly in India. It belongs to the family Fabaceae. Though largely considered an Orphan crop, it has a huge untapped potential for improvement both in quality and quantity of production in Africa. Dimethoate is a widely used organophosphate and acaricide. TAFGOR (30% EC of Dimethoate) is an Acetylcholine esterase inhibitor and also can be used to show the toxic effect on some legume crops like pigeon pea. It is highly effective in controlling and sucking the pests. It is highly compatible with other insecticides and fungicides. The present paper is aimed at studying the effects of Dimethoate on different pigment contents of widely cultivated crop, pigeon pea (Cajanus cajan L.). variety- Manak, Different concentrations of the stress (TAFGOR) were prepared by using distilled water as the solvent from the above stock solution.0,10,20,30,40,50,60,70,80,90,100,200,300,400,500,600,700,800,900,1000PPM. This experiment is done under laboratory conditions with sowing 10 seeds in 21 germination bowls which contain 200 gm. of soil and sand (3:1). The emergence of radicle and plumule is considered as the index of germination. The seedlings are then exposed to light after germination. The following day, after the exposure of seeds to light, there is rapid elongation of radicle and plumule. On 9th day, it is observed that 100% germination in control. So, we observed the germination and leaf emergence of seeds which are shown in different concentrations of TAFGOR, then we measured the length of shoot and root. It is observed with both the fresh weight of root and shoot and dry weight of root and shoot (by keeping in Oven for 15 minutes). On 10th day, in Cajanus cajan L. seedlings grow at 0,50,100, 200, 400, 600, 800 and 1000 PPM TAFGOR treatment, we have done the pigment analysis. There is an inverse relationship between the percentage of seed germination and concentration of TAFGOR i.e. with increase in concentration there is decrease in germination of seeds. The morphological studies also show that, at control the length of the shoot and root is maximum, but when the concentration of the stress increases, the length decreases sharply due to more toxicity. At 1000 PPM, the length is recorded minimum. The fresh and dry weight of root and shoot decreases from control to the 1000 PPM of TAFGOR treated seedlings. The pigment content of Cajanus cajan L. increases at 400 PPM but after that it decreases with increase in concentration.