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20111
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Subject: Agronomy × Author: Bhadra Parija × End date: 2012 × Start date: 2010 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    PERFORMANCE OF KHARIF MAIZE UNDER DIFFERENT LEVELS OF FARMYARD MANURE AND NITROGEN
    (Punjab Agricultural University, Ludhiana, 2011) Bhadra Parija
    The field experiment entitled “Performance of kharif maize under different levels of farmyard manure and nitrogen” was carried out at Research Farm, Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana during kharif 2010. The crop was sown on June 25, 2010 and harvested on October 8, 2010. The soil was loamy sand, normal in reaction, low in organic carbon and available N, medium in available P and K. The field experiment comprised of 20 treatment combinations from four main plot treatments (farmyard manure @ 0, 10, 15 and 20 tonnes/ha) and five nitrogen levels as sub plot treatments (0, 75, 100, 125 and 150 kg N/ha). The experiment was laid out in split plot design with four replications. The grain yield under farmyard manure level FYM20 (20 tonnes/ha) and FYM15 (15 tonnes/ha) was observed to the tune of 62.1 and 58.3 q/ha, respectively, which were statistically at par with each other but significantly higher than the grain yield observed under FYM10 (10 tonnes/ha) and control.. The days taken to dough stage and physiological maturity were more under higher farmyard manure levels (FYM20 and FYM15) as compared to lower farmyard manure level and control. Protein content (%) of grains was increased while starch and total sugars content (%) decreased with increase in farmyard manure level. Nutrient uptake by crop i.e. N, P and K was also higher at higher level of farmyard manure. Among nitrogen levels, N150 gave significantly higher grain yield over N125, N100, N75 and control. Similar trend was also observed for growth and yield attributing characters viz; plant height, number of leaves per plant, LAI, DMA, leaf chlorophyll content, number of grains per cob,1000 grain weight, cob length etc. Quality parameters such as oil, tryptophan, mineral matter, starch and total sugars content (%) remained unaffected under different nitrogen levels whereas protein content (%) was increased with increase in nitrogen level. Crop took more days to attain dough stage and physiological maturity under higher nitrogen level in comparison to lower nitrogen levels. Total N, P and K uptake was also maximum at N150 which was significantly higher than other nitrogen levels.