The present study entitled "Tree-crop interaction studies in Plum (Prunus domestica L.) Based Agroforestry System in Kullu valley of Himachal Pradesh" have revealed that field crop performed poorly under agrihorticulture system in comparison to pure crops. The studies have further indicated that plum compete strongly with maize for moisture, nutrients and other resources. Plum suppressed crop growth and productivity significantly on north side and closer distance from the tree row. It is further deduced from the studies that soil fertility status was higher under agrihorticulture system than...

At present, cytomorphological studies have been carried out on 355 populations of 190 species belonging to 86 genera pertaining to 22 families of polypetalous group of Dicots. The intensive observations have been made on the members collected from different localities covering the wide altitudinal range. In all, new/varied chromosomal number reports are made for total of 58 species. Seven species have been cytologically worked out for the first time at world level. Similarly, new intraspecific cytotypes have been recorded for 25 species on world-wide basis. Three species are reported with...

In okra, a number of varieties have been developed which possess resistance to Yellow Vein Mosaic Virus (YVMV). Little attention has been given to breed varieties resistant to shoot and fruit borer, which is one of the serious insect- pests and causes 41.60 per cent losses in different parts of India. However, according to earlier workers, Earias species infestation may reach as high as 60.68 per cent. Further, control strategies for this pest are exclusively based on the chemicals that are harmful in view of frequent harvesting of fruits (2-3 times a week). The injudicious use of pesticides...