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A. K. Uniyal ¹, Ben Savio Hamtoshi ¹, Tahir Nazir ¹

Affiliations
1 Dolphin P.G. Institute of Biomedical and Natural Science, Manduwala, Dehradun, UK, IN

Abstract

Present investigation was conduct to evaluate the effect of three medicinal agroforestry tree species on germination and ischolar_main-shoot growth of different test crops. All the test crops were found sensitive under leaf and bark mulches of all three medicinal tree species except Gylcin max under Azadirachta indica bark mulch and under leaf mulch of Terminalia bellirica, with respect to germination. These medicinal tree species have allelopathic potential and contain water soluble substances. They have inhibitory effect at higher concentration but at low concentration have stimulatory effects. All the tested agricultural crops may be cultivated under Terminalia bellirica with least harm. The importance indexes of medicinal agroforestry tree species was found to be in order: Terminalia bellirica >Azadirachta indica >Emblica officinalis and the order of agriculture field crops indexes is: Glycine max> Zea mays >Brassica campestris> Setaria italica

Keywords

Allelopathy, Leaf And Bark Extract, Seed Germination

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Tahir Nazir ¹, A. K. Uniyal ¹, Muneer Ahmed ¹

Affiliations
1 Dolphin PG Institute of Biomedical and Natural Sciences, Manduwala, Dehradun, IN

Abstract

Investigation was conducted to evaluate the effect of three medicinal plant species on germination and radicalplumule growth of different test crops. All the test crops were found sensitive under leaf and ischolar_main extracts of all three medicinal plant species except in Centella asiatica as it shows least/no effect and can therefore, cultivated with agriculture crops. The preference order of medicinal plant species on the basis of laboratory tests is suggested as: Centella asiatica > Catharanthus roseus > Bryophyllum pinnatum and the order of field crops preference is: Vigna radiata > Zea mays > Cicer arietinum. Therefore, it is concluded that the results obtained within the scope of our study yielded sufficient preliminary evidence for considerable allelopathic effects from Bryophyllum pinnatum and Catharanthus roseus. Our data support allelopathy as a substantial factor in the competitive ability of the medicinal plant species and field crops. Further focus may be on the study for population dynamical aspects to unravel the key traits underlying the establishment of sustained agriculture.

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Tahir Nazir ¹, C. M. Sharma ¹

Affiliations
1 Dolphin (PG) Institute of Biomedical and Natural Sciences, Manduwala, Near Suddhowala, Dehradun, Uttrakhand, IN

Abstract

In a forest environment, hydraulic conductivity varies by surface condition which is a function of the type and severity of disturbance. The present study was conducted in five forest covers of Garhwal Himalaya i.e Pinus roxburghii, Cedrus deodara, Quercus leucotricophora, Abies pindrow and moist mixed temperate deciduous forest. The infiltration rate was estimated under the disturbed and undisturbed forest covers, by the double ring infiltrometer method. The infiltration rate after 5 minutes was maximum in Pinus roxburghii forest 51.20±3.01cm/hr, followed by Cedrus deodara forest (41.20±1.38cm/hr), Quercus leucotrichophora forest (34.00±3.46cm/hr), Abies pindrow forest (32.00±3.46cm/hr), and moist mixed temperate deciduous forest (27.2±3.01cm/hr). The infiltration rate after 445 minutes was maximum under Quercus leucotrichophora (8.53±0.17cm/hr), followed by moist mixed temperate deciduous forest (8.51±0.54cm/hr), Pinus roxburghii forest (2.50±0.45cm/hr), Abies pindrow forest (2.17±0.16cm/hr) and Cedrus deodara forest (0.33±0.00cm/hr). The higher rate of infiltration in an undisturbed forest is attributed to thicker layer of humus. Therefore, undisturbed forests contributed more to the ground water table than the disturbed forests.

Keywords

Infiltration Rate, Porosity, Soil Texture, Undisturbed and Disturbed, Bulk Density and Soil Organic Matter.

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