Informatics Publishing Limited

K. Kalaichelvi ¹, A. Arul Swaminathan ¹, K. Ramamoorthy ¹

Affiliations
1 Department of Agronomy, Tamil Nadu Agricultural University - Coimbatore - 641 003, IN

Abstract

Herbicide mixtures are commonly used in agriculture to broaden the spectrum of weed control. The interactions or the combinations may be desirable or undesirable. Acetachlor at 150g/ha applied and ready mix application of anilofos and ethoxysulfuron at 780 g/ha provide effective control of weeds with higher grain yield. Tank mix application of metribuzin with isoproturon at 1.0 kg/ha, clodinofop (60g/ha) and fenoxyprop (120g/ha) applied at 3 leaf stage marginally increase the mortality against the resistant biotypes and susceptible biotypes of Phalaris minor with the corresponding increase in the dose of metribuzin. Tank mixing of MON 12000, CGA 152005 with atrazine or bentazon reduces the weed control of these post-emergence herbicides, in controlling velvetleaf. Chlorimuron is compatible with glyphosate, but aciflurofen antogonise glyphosate activity. Thus the interaction effect of herbicide molecule differed.

Full Text

     

K. Kalaichelvi ¹, A. Arul Swaminathan ¹

Affiliations
1 Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore -641 003, IN

Abstract

Indian farmers have been looking for some better alternative to diversify from traditional agriculture due to gradual reduction in profitability owing to decline in productivity, increased incidence of disease and pest attack in traditional crops, contingent upon their hardy nature and higher returns, medicinal plant cultivation is a better option. India needs to take up a systematic approach towards cultivation of medicinal plants to provide a consistent supply of medicinal plant produce of international quality. Senna, Periwinckle, Coleus, Keelanelli, Sadavari, medicinal Solanum, Aloe, Gloriosa and Poonaikali are some of the medicinal plant ideally suitable for wastelands. There are specific herbs that are suitable for all problematic soils, sodic, rainfed lands, dry land conditions and almost all kinds of unutilized and under utilized lands for better remuneration to the farming community.

Keywords

Land Use, Medicinal Plants, Aromatic Plant.

Full Text

     

K. Kalaichelvi ¹, C. Chinnusamy ², A. Arul Swaminathan ³

Affiliations
1 Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore - 641 003, Tamil Nadu, IN
2 ARS, Bhavanisagar - 638 301, Tamil Nadu, IN
3 Horticulture College and Research Institute, Coimbatore - 641 003, Tamil Nadu, IN

Abstract

Humic acid typically contains heterocyclic compounds with carboxylic, phenolic, alcoholic and carbonyl fractions extracted from lignite with high molecular weight. Humic acid has been extracted from various sources such as lignite, peat, coal, farmyard manure, coirpith besides natural persistence in soil. Humic acid plays a vital role in enhancing the nutrient uptake of crop by acting as a chelate in mobilizing nutrients. Prevents losses of degradation and leaching of nutrients and thus reduces the use of inorganic fertilizers besides increasing the efficiency of the applied fertilizers. Presence of growth promoting substances such as auxins and gibberellins had been reported in humic acid and it plays an important role in enhancing the enzymatic activities of the plants. The resistance in the plants found to be increased by the humic acid application. The soil fertility would be improved by mobilising the unavailable form of nutrients to the available form. The humic acid application at optimal rates has been reported to enhance the yield of various crops.

Full Text