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Mahabubnagar, India

A variety with big boll hirsutum cotton coupled with high yield and desirable fiber quality parameters such as 2.5% span length, with optimum strength and micronaire value (fineness) ensures better income and premium price for quality in the market. MCU5, LRAS166, and other pure-bred varieties were cultivated in the upland cotton G hirsutum group, but these genotypes had smaller boll size of nearly 3.6 to 4.2 gram. Standard and uniform agronomic practices were adopted in the entire field to get uniform expression in all the plants. The upland cotton selection Hyps 156 has an attractive plant type with high combining ability for heterosis breeding programs. The seed Industry has been highly benefited by using this variety as male parent in heterosis breeding program and developed a large number of commercially marketed hybrids in conventional and subsequently as GMO cotton forms of the BG-I and BG-II types. Source


Saritha R.,Reg Agril Research Station | Dharma Reddy K.,RARS
Pestology | Year: 2013

Investigations were made to study the spatial distribution of whiteflies on Sunflower. Based on the variance-mean ratio, chi-square test and dispersion indices thrips have shown aggregated distribution and negative binomial model fitted the population pattern. Intraplant distribution studies indicated that the middle strata provided the most reliable estimate of the whitefly population on sunflower. Source


Saritha R.,Reg Agril Research Station | Dharma Reddy K.,RARS
Pestology | Year: 2013

Investigations were made to study the spatial distribution of leaf hoppers on Sunflower. Based on the variance-mean ratio, chi-square test and dispersion indices thrips have shown aggregated distribution and negative binomial model fitted the population pattern. Intraplant distribution studies indicated that the middle strata provided the most reliable estimate of the leaf hopper population on sunflower. Source


Singh P.,MPUAT | Kubsad V.S.,UAS | Kalpana R.,TNAU | Alse U.N.,VNMKV | Sujathamma P.,RARS
Indian Journal of Agronomy | Year: 2015

Field experiments were conducted under All India Coordinated Sorghum Improvement Project (AICSIP) at 6 locations during rainy seasons of 2009 and 2010 in a split plot design having 3 fertility levels, viz., control (0:0:0 kg/ ha of N: P2 O5 :K2 O), recommended dose of nutrients-RDF (80:40:40 kg/ha of N: P2 O5 : K2 O) and 150% of RDF (120:60:60 kg/ha of N: P2 O5 : K2 O) in main-plots, while 8 sorghum cultivars including 3 hybrids (‘CSH 14’, ‘CSH 16’, ‘CSH 23’) and 5 varieties (‘SPV 462’, ‘CSV 15’, ‘CSV 17’, ‘CSV 23’, ‘SPV 1616’) constituted the sub-plot to find out their effects on productivity and nutrient-use efficiency in rainy-season grain sorghum [Sorghum bicolor (L.) Moench]. Results revealed that increasing levels of fertility up to 150% RDF significantly increased the grain yield (3.28 t/ha), nutrient uptake, net returns (25.97 ×103 /ha) and benefit: cost ratio (1.79) as compared to control. Hybrids produced 20.6% higher grain yield over varieties. Among hybrids ‘CSH 16’ (3.07 t/ha) and among varieties ‘SPV 462’ (2.56 t/ha) produced the maximum grain yields. The nutrient-use efficiency (NUE) was higher in hybrids (6.66 kg grain/kg NPK) than the varieties (5.54 kg grain/kg NPK). Increasing fertility levels from 100% RDF to 150% RDF increased the NUE of all the test hybrids, but decreased the efficiency of varieties except ‘CSV 17’. © 2015 Indian Society of Agronomy. All rights reserved. Source


Patil B.,Agriculture Research Station | Kumar V.,Main Cotton Research Station | Babu A.G.,Agriculture Research Station | Ratnakumari S.,RARS | And 5 more authors.
Plant Archives | Year: 2012

The adaption of Bt technology has significantly increased the productivity and yield of cotton in India, pushing India as second largest producer of cotton in the world. At present there are more than 1300 Bt cotton hybrids available in India for cultivation. The farmer finds it difficult to choose the best ones for his field. There is more fluctuation in yield across the years and locations of Bt cotton genotypes. Therefore it has become difficult to suggest the genotypes across seasons, locations or the performance of genotypes year after year. This necessitiates the identification of stable yielding genotypes across locations and years. This will ensure a fixed yield level under normal management conditions. There are several methods to determine the stabilities in crop genotypes. Recently many investigations have emphasized the Additive Mean Effects and Multiplicative Interaction (AMMI) model as a tool to analyze GXE interaction and to define stability for each genotype. The AMMI modal has applied for G. hirsutum genotypes to work out the stability. The AMMI model separates the additive variance from the multiple variances than applies principal component (PCA) to the interaction portion to extract a new set of co ordinate axes which explain more detail GX E interaction pattern. Eighteen cotton genotypes obtained across the three zones in India were evaluated for their stability in yield and yield components under All India Coordinated Cotton Improvement Project (AICCIP) programme. These genotypes were subjected to AMMI method of analysis; fifteen environments were envisaged from five location situated in central zone of India (Surat, Khandwa and Parbhani) and south zone (Dharwad and Guntur) in two years 2006-07 and 2007-08 to investigate GX E interaction for yield and yield components by AMMI analysis. The genotypes KH-138 and CPD-755 recorded significantly high mean yield (1579 & 1365 Kg/ha respectively) and least deviation (bi) (10.1&0.99 respectively), while LRA5166 and GSHV99/307 recorded significant deviation from the mean yield (1325.4 & 1348.3Kg/ha respectively) and bi (0.659 & 1.418 respectively), showed their instability. AMMI assay helped in visual interpretation of the GXE patterns & identify the genotypes or locations that exhibits low to high interaction effects. It is also effective in identifying the genotypes that have specific interaction & non-interaction. Source

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