Zero tillage technology revealed with no use of any soil inverting technique to grow crops. The crop plant seed is planted in the soil directly after irrigation to make the soil soft without any replenishing in soil layers. A study was conducted to evaluate cotton genotypes FH-114 and FH-142 for the consecutive three years of growing seasons from 2013-15. The seed of both genotypes was sown with two date of sowing, 1 March and 1 May of each three years of sowing under three tillage treatments (zero tillage, minimum tillage and conventional tillage) in triplicate completely randomized split-split plot design. It was found from results that significant differences were recorded for tillage treatments, date of sowing, genotypes and their interactions. Multivariate analysis was performed to evaluate the yield and it attributed traits for potential of FH-114 and FH-142 cotton genotypes. The genotype FH-142 was found with higher and batter performance as compared to FH-114 under zero tillage, minimum tillage and conventional tillage techniques. The traits bolls per plant, boll weight, fibre fineness, fibre strength, plant height, cotton yield per plant and sympodial branches per plant were found as most contributing traits towards cotton yield and production. It was also found that FH-142 gives higher output in terms of economic gain under zero tillage with 54% increase as compared to conventional tillage technique. It was suggested that zero tillage technology should be adopted to improve cotton yield and quality. It was also recommended that further study to evaluate zero tillage as potential technology should be performed with different regions, climate and timing throughout the world.
To study the relationship amongst leaf chlorophyll contents, yield and related parameters, 18 advanced genotypes of cotton were tested in a trial at Cotton Research Station, Faisalabad. Highly significant results were noticed in the analysis of variance. Further investigation in correlation analysis revealed that there was comendable positive association among leaf chlorophyll contents, seed cotton yield (SCY), No. of sympodia, seed index and boll weight(g). Principal Component Analysis (PCA) demonstrated that only 02 out of 08 PCs showed eigen value greater than 1. The contribution of first two PCs in total variability was 70.77% amongst the genotypes assessed for chlorophyll contents, seed cotton yield and related traits. Remaining six components contributed very less viz. 30.8% in total variability. Valuable positive factor loadings on PC I was attributed by seed cotton yield, chlorophyll contents, boll weight, No. of sympodia, seed index and Ginning out turn (GOT)%. In PC II, maximum positive contribution was presented by plant height whereras maximum negative factor loadings were showed by GOT % and seed index. PCA also confirmed the results of correlation studies by presenting significant positive association among leaf chlorophyll contents, seed cotton yield, No. of sympodia, seed index and boll weight. These results will be helpful in further breeding strategies for selection of genotypes with respect to chlorophyll contents, yield and associated traits.
FH-444 is a new Bt cotton variety which was released during the year 2020-21 by Cotton Research Station, Ayub Agricultural Research Institute, for irrigated areas of Punjab, Pakistan to maintain fiber quality and production through gradually replacement of existing cotton cultivars to avoid the yield losses caused by insect, pest and unexpected disease attacks. The FH-444 possesses drought tolerance and very good combination of traits to meet the requirements of the farmers, pickers, ginners, spinners and textile industry. The evaluation of this promising line was started during 2011-12 in different yield tests viz: preliminary & advance yield trials, Provincial Coordinated Cotton Trial (PCCT), National Coordinated Varietal Trial (NCVT), Distinctness, Uniformity and Stability (DUS) Trial, Agronomic trials, 1.25 Acre trials etc. In preliminary yield trials, FH-444 showed 45.96% increase in yield (3592 kg/ha) over standard variety FH-113 (2461 kg/ha) during 2011-12 while in advanced yield trials, FH-444 exhibited 23.61% increase in yield (3408 kg/ha) over standard variety FH-113 (2757 kg/ha) during 2013-14. It was also found that the effects of Cotton Leaf Curl Disease (CLCuD) were low (1.7 %) in FH-444 during growing season of 2014-15, while FH-142 showed increased incidence of attack (4.9%). FH444 demonstrated significant resistance with respect to thrips, whitefly, jassid and pink bollworm infestation. In present study it was found that the variety FH-444 possesses higher yield potential and will contribute to improve cotton yield and production under different stress conditions.
Okra plants suffer from severe quality and yield losses due to damage by different insect pests at various stages of crop development. However, the losses incurred to the okra crop vary depending upon the variety, time Abstract | Five cultivars of Okra viz., Sabz Pari, Shakti Hybrid, NS-810, OK Advanta-803 and NS-801 were tested for resistance against Amrasca devastans (Dist.
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