International Journal of Agriculture and Biology


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    ABSTRACT: Greenhouse and field studies were conducted in the spring and autumn of 2010 to test the efficacy of dry amendments of Fumaria parviflora as a form of eco-friendly management of Meloidogyne incognita in tomato. Various preparations of F. parviflora (in the form of dry root, stem, leaf and whole plant powder) at different dose rates (10, 20 and 30 g per kg of soil) significantly reduced levels of M. incognita in the roots of tomato cv. Rio Grande, and promoted plant growth. The root amendments of F. parviflora at the highest application dose (30 g per kg of soil) were the most effective, significantly reducing the number of galls, the galling index, the egg masses per g of the root, and the adult females per g of the root. Shoot and root lengths, the fresh and the dry shoot weight, and the number of branches and flowers per plant were improved in greenhouse trials that were conducted in the spring and autumn. Under naturally infested field conditions, the root´s amendment of F. parviflora at the highest application dose was the most effective, and reduced the number of galls, the GI, the number of egg masses per g-1 of root, the adult females per g of root, and the reproduction factor (Rf). It also promoted plant, health and increased the number of fruits per plant and the fruit weight per plant in the spring and autumn experiment. Dry amendments of F. parviflora have remarkable nematicidal potential and could be used as an effective and environment-friendly management tool against M. incognita as an alternative to chemical control
    International Journal of Agriculture and Biology 01/2015;
  • International Journal of Agriculture and Biology 10/2014;
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    ABSTRACT: Biological preparation containing live or latent cells of microorganisms or their metabolites, which when inoculated to seed, soil or roots of seedlings, promote plant growth and enhance harvestable yield is termed as biofertilizer. Biofertilizers, generally marketed, contain microbes capable of nitrogen (N) -fixation, phosphate solubilization/mineralization, phytohormone production and biocontrol. This paper reviews various initiatives in research and development of the biofertilizers taken by different institutes of Pakistan. The use of biofertilizers can play an important role in sustaining the agriculture systems. In Pakistan, where fertilizer is annually a hundred billion rupees business, even a 10% contribution by biofertilizer can save rupees ~10 billion. Various research groups/organizations are engaged in research and development on biofertilizers and have made their efforts to increase the application of biofertilizers in Pakistan’s agriculture. Inconsistent field performance, lack of regulation and standards, quality issues of the product(s), awareness and lack of publicity are the major constraints in the widespread use of biofertilizers in Pakistan. If these problems are resolved, better results and responses can be expected through biofertilizer use in Pakistan. Assuring quality of products with extensive field-based testing, capacity building of resource persons and stakeholders on standard production processes, storage and application will help a wider adoption and popularization of the biofertilizer technologies.
    International Journal of Agriculture and Biology 10/2014;
  • International Journal of Agriculture and Biology 08/2014;
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    ABSTRACT: Genetic diversity of 113 desi chickpea genotypes was studied through descriptive, principal component and cluster analysis. High variances were observed for days to flowering, maturity, plant height, pods plant-1, biological yield and harvest index. These traits also showed positive significant correlation with yield which was confirmed through principal component analysis. Principal component analysis (PCA) revealed that the first 4 principal components accounted for 71.99% of the total variation. Seed yield, biological yield, pods plant-1, secondary branches and plant height in chickpea showed positive relation with the first component (PC1). Days to flowering, days to maturity, 100-seed weight showed positive correlation with the second component (PC2). The genotypes were grouped into four clusters using cluster analysis. Genotypes with early flowering and maturity were gathered in cluster I while cluster II showed dominant contribution for grain yield plant-1, harvest index and number of pods plant-1. The grouping of genotypes would be of practical value to chickpea breeders in identifying the genotype with desired trait for utilization in breeding program for genetic improvement.
    International Journal of Agriculture and Biology 06/2014; 16(5):956-960.