Effect of fertilization with bio- and mineral–N on yield and yield component of rice grown on a clayey soil

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Abstract: A field experiment was carried out on a clayey soil during two successive growth summer seasons 2009 and 2010 to study the effect of application rates and forms of mineral N ( ammonium sulphate and urea) and biofertilizer (Cyanobacterine) on the growth of rice plant (Oryza sativa), yield and yield component. Nitrogen fertilizers were added at rates of 40,60,80, and 100% of recommended dose (RD) .Application rate of biofertilizer was 1 kg/fed. The experiment was carried out in split split plot design with six replicates. The results showed that plant height, number of spikes / plant, spike length and the yields of straw and grains were increased significantly with the increase of added N. More increases of these parameters were associated with the treatment of biofertilization. Also, the values of the previous parameters were higher when ammonium sulphate was added than those when urea was added. Nitrogen and K concentration (%) and uptake (kg/fed) by straw and grains were increased with the increase of added N individually or in combination with biofertilizer. On the other hand , increasing of added N resulted in a decrease of P concentration (%) in the straw and grains, but P uptake (kg/fed) was increased especially with the combined treatments of mineral N and biofertilization. Straw concentration (%) of N, P and K were decreased with the increase of plant age. The soil contents (mg/kg) of available N, P and K varied widely from fertilization treatment to another

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Publication year

2011

Organization Name

Soil, Water and Environment Research Institute (SWERI)

City

المنوفية

serial title

Minufiya J. Agric. Res

Web Page

www.mujar.net