Informatics Publishing Limited

V. Chaitanya ¹, R. V. S. K. Reddy ², S. R. Pandravada ³, M. Sujatha ⁴

Affiliations
1 College of Horticulture, Dr. Y.S.R. Horticultural University, Rajendranagar, Hyderabad (A.P.), IN
2 Vegetable Research Station, Dr. Y.S.R. Horticultural University, Rajendranagar, Hydearabad A.P., IN
3 National Bureau of Plant Genetic Resource Regional Station, Hydearabad A.P.
4 College of Agriculture, Acharya N.G. Ranga Agricultural University, Rajendranagar, Hydearabad A.P., IN

Abstract

Mahalanobis D2 statistics was used to study the genetic divergence for 19 characters among 48 genotypes of Indian bean. Genotypes were grouped in to eight clusters on the basis of relative magnitude of D2 values. The highest number of genotypes (14) appeared in cluster III. The maximum inter cluster distance was observed between cluster IV and cluster VI followed by cluster IV and VIII. The minimum inter cluster distance was observed between cluster I and cluster IV. Maximum intra cluster distance was in cluster V followed by cluster III. The mean value for most of the traits was highest in cluster VIII. Among the yield contributing characters, the maximum contribution towards divergence was made by protein content followed by number of flowers per inflorescence, pod length and number of pods per plant. Hybridization between cluster IV and VI could be utilized for getting the superior recombinants or transgress segregants in segregating generations.

Keywords

Dolichos Bean, Genetic Diversity, Hybridization

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V. L. Pathipati ¹, T. V. K. Singh ², S. B. Vemuri ³, R. V. S. K. Reddy ⁴, N. B. Bharathi ⁵

Affiliations
1 Department of Entomology, Horticultural Polytechnic, Dr. Y.S.R. Horticultural University, Nuzvid, Krishna (A.P.), IN
2 Indian Council of Agricultural Research., Prof. Jayshankar Telangana State Agricultural University, Rajendranagar, Hyderabad (Telangana), IN
3 Department of Entomology, AINP on Pesticide Residues, Prof. Jayshankar Telangana State Agricultural University, Rajendranagar, Hyderabad (Telangana), IN
4 Department of Extension, Dr. Y.S.R. Horticultural University, Nuzvid, Krishna (A.P.), IN
5 Department of Plant Pathology, Prof. Jayshankar Telangana State Agricultural University, Rajendranagar, Hyderabad (Telangana), IN

Abstract

Chlorantraniliprole is a broad spectrum foliar insecticide with contact and systemic action, widely used on vegetables in India for the management of lepidopteran insects both in field and poly houses. Chlorantraniliprole is not registered for use on capsicum in India and hence, maximum residue limits are not available as per Food Safety and Standards Authority of India. However, use of chlorantraniliprole in open field and poly house is very common hence, chlorantraniliprole residues are found in survey samples. A research project was taken to study dissipation pattern of chlorantraniliprole 20 SC in both open fields and poly houses, when applied thrice @ 60 g a.i.ha^-1, first spray at fruit initiation followed by second and third spray at 10 days interval as per the farmers practice. Chlorantraniliprole residues were quantified through regular sampling till the residues are below determination level (BDL) of 0.05 mg kg^-1 following the validated QuEChERS method. The qualitative and quantitative analysis of chlorantraniliprole was performed on LC-MS/MS (PDA). Initial deposits of 0.36 mg kg^-1 were detected in capsicum samples collected from open filed, which dissipated to BDL in 7.0 days while in poly house, initial deposits of 1.31 mg kg^-1 were dissipated to BDL in 15.0 days. The waiting period for safe harvest was worked out to be 7.0 and 15.0 days when chlorantraniliprole 20 SC @ 60 ml a.i. ha^-1 sprayed thrice in open and poly house conditions, respectively. Dissipation is slow in poly house compared to open fields due to various factors. In both situations initial deposits are lower than the MRL (2 mg kg^-1) of Codex Alimentarius Commission hence, a pre-harvest interval of 7.0 and 15.0 day is recommended.

Keywords

Chlorantraniliprole, Capsicum, Field, Poly House, Food Safety.

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V. L. Pathipati ¹, T. V. K. Singh ², S. B. Vemuri ², R. V. S. K. Reddy ², N. B. Bharathi ²

Affiliations
1 Horticultural Polytechnic, Dr. Y.S.R. Horticultural University, Nuzvid, Krishna (A.P.), IN
2 College of Agriculture, Prof. Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad (Telangana), IN

Abstract

Field experiments were conducted during 2013-14 and 2014-15 to evaluate the new insecticides for the management of mite, Polyphagotarsonemus latus banks and dissipation of effective insecticide on capsicum. Among the seven insecticides, mean of two seasons under poly house condition, population was less with spiromesifen (0.06 mites/leaf) followed by diafenthiuron (2.21 mites/leaf), triazophos (3.68 mites/leaf) and thiamethoxam (5.30 mites/leaf) which were significantly superior over untreated check (11.33). Spiromesifen residues were quantified through regular sampling till the residues are below determination level (BDL) of 0.05 mg kg^-1 following the validated QuEChERS method. The qualitative and quantitative analysis of spiromesifen was performed on LC- MS/MS (PDA). Initial deposits of 1.61 mg kg^-1 of spiromesifen detected at 2 hours after last spray, dissipated to BDL at 10^th day after spray. The half-life and safe waiting period for harvest was 2.09 and 10.00 days, respectively.

Keywords

Capsicum, Mite, Spiromesifen, Dissipation.

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E. Ravi Goud ¹, V. Nagarjuna ¹, R. Suneetha ¹, V. Yugandhar ¹, G. Sandeep Naik ¹, R. V. S. K. Reddy ², M. Ramakrishna ¹

Affiliations
1 Krishi Vigyan Kendra, Vonipenta, Mydukur, Kadapa (A.P.), IN
2 Dr. YSR Horticultural University, V.R. Gudem (A.P.), IN

Abstract

The goals of IFS are to sustain agricultural production, maintain farm incomes, safeguard the environment and respond to consumer concerns about food quality issues. IFS can be conceptualised as a ‘third way’ or middle course for agriculture between conventional and organic farming. The role and factors associated with integrated farming system have been studied as a potential option to improve farmers’ income and ensure their sustainable livelihood in YSR Kadapa district of Andhra Pradesh. The contribution of different combinations of enterprises such as poultry, sheep/goat, fishery, sericulture and horticulture; with crop and dairy as base enterprises have been analysed for their impact on farmers’ total income. The financial benefit of adopting different enterprise combinations analysed through partial budgeting has been found ranging from Rs. 16400/acre to Rs. 25000/acre. Horti. crops (papaya/banana) + Buffaloes + poultry (S.I. 98.67) and Horti. crops (Turmeric + marigold) + cows + buffalos (S.I. 70.93), have emerged as the most sustainable farming system enterprises in Kadapa dist. As non-availability of labour and higher care and management required for maintenance of different enterprises at the same time were observed as major constraints in adopting integrated farming system. The farmers can realize the augmenting of their income within a contemplated period by adding livestock in the farming system and reap the consequent social and ecological benefits.

Keywords

Integrated Farming System, Farmer’s Income, Sustainability Index.

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