Dr. C Chinnusamy | TNAU/DCR (original) (raw)

Uploads

Papers by Dr. C Chinnusamy

International Journal of Chemical Studies

Agricultural Reviews

Weeds are generally hardy species having fast growth, deep root system and capable of competing v... more Weeds are generally hardy species having fast growth, deep root system and capable of competing very efficiently with cultivated crops for the available resources and adversely affect the crop growth and yield. Weed management systems that rely on post emergence control assume that crops can tolerate competition for certain periods of time without suffering yield losses. Initial slow growth particularly at early crop growth stages and wider plant spacing of maize crop encourages fast and vigorous growth of weeds. It is of paramount importance that, competition from weeds must be minimized to achieve optimum yield. Among the different weed control methods, chemical method bears many advantages in suppressing weed growth and to get healthy and vigorous crop stand. Non-selective herbicide molecules with a variety of mode of action were discovered, developed and marketed for successful weed control programme.

Indian Journal of Weed Science

Madras Agricultural Journal

International Journal of Farm Sciences

International Journal of Current Microbiology and Applied Sciences

Journal of Applied and Natural Science

Field experiments were conducted with sunflower as a test crop during 2010-11 to study the dissip... more Field experiments were conducted with sunflower as a test crop during 2010-11 to study the dissipation kinetics and the persistence of pendimethalin and alachlor in sandy clay loam soil and its terminal residues in sunflower. Herbicides were applied at recommended and double the recommended dose along with control and the treatments were replicated thrice in randomized block design. The soil and plant samples collected at periodical intervals for herbicides residue determination using GC equipped with ECD detector. Results shows that the degradation of both the herbicides in soil was faster at higher dose of application than at the lower dose and the concentration decreased with the advancement in crop growth. While pendimethalin persisted in soil for 60 – 90 days, the alachlor persisted in soil for 30 - 45 days depending on the quantity of application. Degradation of both the herbicides in soil followed first order kinetics with the mean half life of 14.6 and 9.8 days respectively ...

Journal of Applied and Natural Science

Field experiment was conducted in the wetland farms of Tamil Nadu Agricultural University, Coimba... more Field experiment was conducted in the wetland farms of Tamil Nadu Agricultural University, Coimbatore during rabi season (August to February) of 2011-12 to evaluate the herbicide (Bispyribac sodium 10% SC) on weed control and their nutrient management in direct seeded lowland rice. The experiment was laid out in a Randomized Block Design (RBD) with three replications. The results revealed that Early Post Emergence (EPOE) application of bispyribac sodium 10% SC 40 g ha-1 recorded higher weed control efficiency and lesser weed density, nutrient uptake at reproductive stage of the crop. Different weed management practices imposed on rice crop did not affect the germination of succeeding green gram.

Agricultural Reviews

Sugarcane (Saccharum officinarum L.) is the most adaptable plant under sub-tropical and tropical ... more Sugarcane (Saccharum officinarum L.) is the most adaptable plant under sub-tropical and tropical conditions. . Among the C4 group of plants, sugarcane is one of the most efficient crops. Converting efficiency of solar radiation into photosynthates is relatively higher in sugarcane than any other crops evolved. But there is a wide yield gap between the potential and actual yield. Weeds are the major important threat in yield reduction of sugarcane crop. Hence knowledge about weed flora, critical period of crop weed competition, competition of weeds, effect of weed on crop growth is helpful in deciding the method of weed management in particular crop. Reviewing of these parameters is helpful and it is carried out in this paper.

Journal of Applied and Natural Science

Pesticides though formulated to be biologically degradable, few herbicides reported to cause surf... more Pesticides though formulated to be biologically degradable, few herbicides reported to cause surface and groundwater contamination which needs the monitoring of herbicide residues in environment continuously. Thus, to monitor the persistence and residues in crops, imazethapyr degradation studies were conducted in soil with groundnut cropping under Indian tropical condition. A groundnut field was treated with different doses of imazethapyr as early post emergence. Results showed that the degradation of imazethapyr in soil and groundnut plant followed first order reaction kinetics irrespective of the dose. The residue of imazethapyr persists in soil up to 60 days at higher rates of application while it persists up to 30 days in plant with the calculated half life of 2.8 to 7.4 days in soil and 5.1 to 5.9 days in plant. At the time of harvest, the residue of imazethapyr in soil, groundnut haulm or pods were below the detectable limit of 0.008 mg/kg across different doses of application...

Agricultural Reviews

At present, India is facing the worst water shortage in its history. According to a report by Nit... more At present, India is facing the worst water shortage in its history. According to a report by Niti Aayog, about 600 peoples are suffering with high to extreme water shortage and also states that around 200,000 lives of Indians are losing every year owing to the contamination of water or inadequate water supply. Here comes, the need for the safeguard of water resources in our country. But the fact is that Indian rivers are polluting at an alarming rate of 80% due to untreated wastewater flowing into water bodies have almost doubled in recent years. To reduce the contamination level of water resources, wastewater treatment will play a predominant role. Conventional wastewater treatment technique, i.e., activated sludge, were used to reduce the concentration of the pollutants in sewage water. However, there are still some confines especially that they operate at a higher cost. The objective of this review paper is to elaborate on how the reed bed system can act as a better alternative ...