Open Access Original Research Article

Stability and Adaptability Patterns of Chilli Hybrids in Karnataka State

Raghavendra Hadora, B. R. Jagadeesh, Varsha Damodar, Pratibha Havanur

International Journal of Plant & Soil Science, Page 1-10
DOI: 10.9734/IJPSS/2017/35427

Chilli is an important vegetable and spice crop in India. It is most widely cultivated in India for its pungency and export-oriented quality. It is a climate dependent sensitive to various pest and disease infestation. The southern parts of the country emerged as novel diversity in the cultivated species the genus Capsicum. Investigations were carried out to assess the stability of many chilli hybrids using popular commercial checks across the nation. The results of these studies were meticulous and the popularity of hybrid chilli crop mostly depends on the yield and yield attributing factors. Breeding for most stable chilli hybrid needs genetic variation and the variance environmental factor plays a vital role in emergence of stable chilli hybrid. Considering all the edaphic factors and stability parameters the test hybrids were developed and evaluated at different environmental conditions. The test Hybrids, developed were subjected to various observations such as average fruit weight, fruit width, length, number of fruits per plant, etc., the best yielding genotype among different test hybrids, having higher yield level than the check and which were also stable for most of the characters as evident from their non-significant s2di values were considered for their adaptability. The adaptability of these selected hybrids for specific location may help in identifying most promising hybrids for yield and its component traits and to assess its stability across the state.

Open Access Original Research Article

The Influence of Nitrogen and Phosphorus on Watermelon Fruit Quality

Erone Vallantino Emongor, Malikongwa Thatayaone, Seoleseng Obonya Tshwenyane

International Journal of Plant & Soil Science, Page 1-9
DOI: 10.9734/IJPSS/2017/36211

This study was done to elucidate the effects of nitrogen (N) and phosphorus (P) on fruit quality of watermelon. The experimental design was a split-plot laid down in randomized complete blocks with three replications. The treatments were 0, 50, 100, 150 and 200 kg N/ha (main-plots) and 0, 25, 50 and 75 kg P/ha (sub-plots). There were no interactions between N and P treatments on all the dependent variables analyzed. Application of 50, 100, 150 and 200 kg N/ha to watermelon plants significantly (P < .0001) increased fruit quality (lycopene content, vitamin C, titratable acidity and fruit rind thickness) compared to fruit from control plants. However, P application had no significant (P = .05) effects on fruit lycopene content, vitamin C content, titratable acidity, soluble solids content and fruit rind thickness compared to fruit from control plants. In conclusion to optimize watermelon fruit quality, application of 150 kg N/ha and 50 kg P/ha to watermelon plants was recommended.

Open Access Original Research Article

Effect of Different Pretreatments on the Quality of Osmotic Dehydrated Ripe Sapota Slices

Tejib Tripura, Tapas Sarkar, M. Madhavi, Shreyasi Mallik

International Journal of Plant & Soil Science, Page 1-9
DOI: 10.9734/IJPSS/2017/36220

The investigation was carried out in the laboratory of post harvest technology, College of Horticulture, Dr. Y.S.R. Horticultural University, Rajendranagar, Hyderabad, India, during the year 2014-2015 to study the effect of different pretreatments on the quality of osmotic dehydrated ripe sapota slices (var. kalipatti). The experiment comprises 9 treatments replicated thrice. The experiment was laid out in Complete Randomized Design (CRD). The data were subjected to statistical analysis as per the procedure outlined by [1]. The range of water loss, weight reduction, sugar gain, TSS, acidity, ascorbic acid, carotene, calcium, phosphorus were observed. An increase in duration of osmosis from 4 to 8 hours leads to increase in water loss, weight reduction and sugar gain and TSS of the dried, ripe sapota slices. However, osmotic pretreatment with invert sugar 600Brix for 8 hours resulted in highest sensory scores (7.33) while, it was lowest in slices pretreated with fructose 600Brix for 4 hours (5.00).

Open Access Original Research Article

Influence of Glufosinate Ammonium on Some Soil Properties and Rhizospheric Micro-organisms of Tea Crop (Camellia sinensis L.) in Eastern Himalayan Region of India

Anannya Ghosh, Dibyendu Mondal, Adyant Kumar, Ratikanta Ghosh, Pintoo Bandopadhyay

International Journal of Plant & Soil Science, Page 1-7
DOI: 10.9734/IJPSS/2017/36003

The effect of Glufosinate Ammonium 13.5% SL on soil physico-chemical properties and microflora population on tea soil of Darjeeling, West Bengal, India was investigated over two years (2014 and 2015). Effect of herbicides on bulk density, water holding capacity, moisture content, soil pH, organic matter content, electrical conductivity, as well as total nitrogen, available phosphorus and available potassium contents were analyzed along with microflora population of rhizosphere soil (total bacteria, actinomycetes and fungi). The experiment was laid out in randomized complete block design with three replications. The treatments comprised of POE application of Glufosinate Ammonium 13.5% SL at 300, 375, 500, 750 g ha-1 along with standard check Basta (Glufosinate Ammonium 13.5% SL) at 375, 500 g ha-1, hand weeding (at 25 and 45 DAA ) beside untreated control plot. Result revealed that, no significant changes in soil physico-chemical properties were observed due to application of tested herbicides. Herbicidal treatments recorded a decreasing trend on soil microbial counts immediately after application up to 20 DAA. Then the microflora population increased gradually after completion persistency period of Glufosinate Ammonium. Overall there was no long term adverse effect of Glufosinate Ammonium 13.5% SL on the microbial population in Rhizosphere soil of Tea crop.

Open Access Original Research Article

Effect of PGRs and Nutrients on Growth, Physiological Parameters and Yield of Vigna mungo L. under Saline Stress

R. Sivakumar, S. Jaya Priya

International Journal of Plant & Soil Science, Page 1-10
DOI: 10.9734/IJPSS/2017/36420

Aim: Pots culture experiment was conducted in order to alleviate the salinity effect in Vigna mungo L. using plant growth regulators and nutrients by assessing growth, physiological and yield parameters.

Study Design: The experiment was carried out with seven treatments of different PGRs and nutrients with three replications organized in a complete randomized design.

Place and Duration of Study: The experiment was conducted in glass house, Department of Crop Physiology, TNAU, Coimbatore, Tamil Nadu, India during 2016.

Methodology: Red sandy soil mixture was used for pots culture experiment using medium size pots with 12 kg capacity. The salinity was imposed by 125 mM NaCl concentration. Plant growth regulators and nutrients like jasmonic acid (50 µM), gibberellic acid (10 ppm), brassinolide (0.5 ppm), salicylic acid (100 ppm), ascorbic acid (100 ppm), benzyl amino purine (5 ppm), K2SO4 (0.5%) + FeSO4 (0.5%) + Borax (0.3%) and TNAU Pulse Wonder (1%) were used as foliar spray at 20 and 40 days after sowing except jasmonic acid, which used as seed soaking. The plant height, root length, chlorophyll content, soluble protein content, proline content and NR activity were estimated at 30 and 50 days after sowing. Finally the yield was recorded during harvest.

Results: Salinity significantly reduces the plant height, root length, chlorophyll and soluble protein contents, NR activity and yield. However, the proline content was increased under saline condition over absolute control. Among the PGRs and nutrients, 0.5 ppm brassinolide showed its supremacy in terms of increased plant height, soluble protein, NR activity and yield compared to other treatments. However, benzyl amino purine recorded higher chlorophyll content (2.25 mg g-1) followed by TNAU Pulse Wonder (2.12 mg g-1) and brassinolide (2.04 mg g-1). Brassinolide registered the highest proline content of followed by ascorbic acid and TNAU Pulse Wonder. Brassinolide increased nitrate reductase activity up to 36.78 per cent followed by salicylic acid (32.18%) over control. Brassinolide recorded the maximum grain yield of 8.85 g plant-1 followed the salicylic acid (8.72) which is on par with TNAU Pulse Wonder (8.60 g).

Conclusion: Salinity causes 40 per cent yield reduction in black gram. All the PGRs and nutrients improved the growth and yield of black gram under salinity. Brassinolide showed its supremacy of 21.07 per cent yield increment under salinity followed by salicylic acid (16.98%) and TNAU Pulse Wonder (13.21%).