Evaluation of barley yield under some biofertilizers and nitrogen treatments using some statistical parameters.
Abstract: Two field experiments were conducted at Ismailia Research Station during 1998/99 and 1999/2000 growing seasons. The objective of this research was to study the effect of three biofertilizers and nitrogen fertilizer levels and their interactions on yield of barley and its components as well as to determine the most important yield component under different biofertilizers and nitrogen fertilization treatments. A randomized complete block design was used with three replications. Mineral nitrogen fertilizer levels were ( 0, 22.5, 45, 67.5, 90 kg N/ fed in the form of ammonium sulphate (20.6% N). Biofertilizer treatments were un inoculation, inoculation with each of, Microbin, Nitrobin and Cerealin for Giza 124 barley cv. The recorded data were: plant height, spike length, number of spikes/m2, number of grains /spike, weight of grains spike, weight of 1000 grains, heading date, grain yield, straw yield and total biological yield. Analysis of variance, simple correlation multiple linear regression and path coefficient analysis were computed. All characters except weight 1000 had significantly affect by application of biofertilizer and nitrogen fertilizer. The highest grains, straw and biological yield were obtained by the application of Cerealin + 45 kg N/ fed. The application of bifertilizer cerealine significantly increased grain, straw and biological yields. All characters were significantly increased with increasing nitrogen level up to 67.5 kg N/fed. Higher order interaction was generally significant, except of weight of 1000 grains, biological and straw yields. Accordingly, it was found that the grain yield kg/ fed using (cereal in + zero N ) was the best treatment. Mean separation was done using method orthogonailty comparison. All fertilizer treatments under study gave highly significant on yield and its component of barley as compared to the un- inoculation. The obtained results indicated that biofertilizer was negatively significant affected on all studied characters, except spike length and harvest index compared to the nitrogen fertilizer. Results indicate that applying of 90 kg N caused high significant effect on all characters compared to the un- inoculation. The highest value of correlation coefficient was found between grain yield and plant height, spike length, number of grains/ spike, weight of grains/ spike, number of spikes/ m2, biological and straw yields, low correlation between weight of 1000 grains and yield and negative correlation between heading date and yield.
Analysis clarified the relationship between correlation variables in the dependence structure. When the relative contribution from plant height (x1), weight of grains/ spike (x2), and number of spikes/ m2 (x3), were combined in linear regression equation. Their contribution to yield was 84.37% for the experiment. The equations were:
Y= -544.2960 + 6.4794** (x1) + 172.9525** (x2) + 2.1820**(x3).
Path coefficient analysis was used to establish the relative importance of grain yield kg/ fed. The results indicate that plant height, weight of grains/ spike and number of spikes/m2, were the major and the most consistent sources accounting for of 84.37% of yield variation in the experiment.
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Publication year 2001
Pages 991-1008
Organization Name
Country Egypt
serial title Zagazig Journal of Agricultural Research
Volume 28 . 6
Department Experimental Design and Computer Programming
Author(s) from ARC
Publication Type Journal
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