International Journal of Innovative Research and Development

Sudhakar V. Chaudhari , Priyanka L. Gade , Vrushali S. Tanpure , Priyanka S. Chaudhari

Abstract

Parthenium hysterophorus L. is a serious weed in India, covering about 5 million ha of land. Zygogramnw bicolorata Pallister the leaf beetle, Mexican was considered a safe biocontrol agent. It causes extensive damage to Parthenium plants. Its occurrences & distribution was studied around Rahuri city. It is not well established and spread in study area and need its dispersal to control the parthenium. The data on preference of food by adults of Z. bicolorata on crop plants along with carrot weed indicates its preference for feeding & oviposition to parthenium. It is found to be a promising, safe biocontrol agent. Its distribution among farmers can help to control the weed.

Keywords

Occurrence, Distribution, Preference of Food, Safe Biocontrol, Planning, Awareness Programme

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S.V. Chaudhari , Priyanka S. Chaudhari

Abstract

The pesticides like Methyl Parathion (2 %W.P.) and Rogar -Dimethoate 30% E.C. and fertilizers like Urea (46% N) and Vermiwash at concentrations 25, 50, 75 and 100% were selected. These were tested for their effects on onion ischolar_main tips. The onion ischolar_main tip technique provides a rapid method for making preliminary tests for suspected agents. The vegetative propagation was fast in concentrations of vermiwash than control and urea solutions. Rapid cell division in terms of growth observed in vermiwash and there was no chromosomal aberration found. Retarded vegetative growth and chromosomal aberration noticed at anaphase in these pesticides. The chromosome aberration consisted of acentric fragments and dicentric bridges.

Keywords

Onion ischolar_main growth, pesticides, methyl parathion, dimethoate, fertilizers, urea, vermiwash

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