Influence of Compost, N-Mineral and Humic Acid on Yield and Chmical Composition of Wheat Plants

Abstract

Two field experiments were carried out at the experimental farm of El-Ismailia Agric. Research station, during two successive winter seasons of 2007/2008-2008/2009 to study the effect of different levels of nitrogen fertilizers 0,25, 50, 75 and 100kg N/fed. from recommended dose (100kg/fed) with or without composted rice straw and / or humic acid on yield, yield components, chemical composition of wheat plant and its attributes as well as NPK uptake of wheat grain and straw, and protein content. A three way randomize complete block (Factorial) design with three replicates was used. The obtained results could be summarized as follow;-1-Raising mineral nitrogen fertilizer level from 25 to 50, 75 and 100 kg N/fed resulted in significant increases in plant height, spike length, grain and straw yields/fed and protein content of grain and straw. Also, NPK uptake of grain and straw were significantly increased. 2-The wheat grain and straw yields as well as their NPK contents and grain protein were significantly increased by application of compost and humic acid treatments. 3-Raising the nitrogen rate along with compost application increased the quantity and quality of wheat yield. 4-Addition of humic acid markedly increased plant height, spike length, 1000-grain weight, grain and straw yield/fed., protein content of grain, NPK uptake of both grain and straw. 5-The interaction between compost, mineral nitrogen level and humic acid had significant effects on grain yield/fed. and N,P and K uptake of straw and 1000-grain weight. 6-The highest values for yield and its components were obtained by humic acid, under the highest level of nitrogen fertilizer and compost treatment. Therefore, it could be concluded that the application of compost+ 100 kg N/fed + humic acid was the most compatible and economical, since it has the highest wheat yield.

Response of Bread Wheat to Nitrogen Fertilizer Rates and Spraying with Ascorbic, Citric and Salicylic Acids

“…The increase in N, P and K uptake of wheat straw related with rising N fertilizer rates may be due to the role of N fertilizer in increasing growth of wheat through heartening plants to uptake other macro and micronutrients as well as accordingly enhancing photosynthesis. These results are in agreement with those reported by Seadh et al, (2008); Antoun et al, (2010) and Shirazi et al (2014), they concluded that the attractive effect of higher N fertilizer rate on yields and quality of grain can be easily ascribed to the nitrogen which think as one of the major nutrient for plant nutrition and it enlarges the vegetative plant growth and forms strong plants with long spikes. Furthermore, nitrogen give confidences plant to uptake other macro and micronutrients activating, thus plants growth, accordingly increasing measurements of growth and all yield attributes.…”

Impact of Mineral, Organic and Bio Fertilizers on Growth, Yield and Quality of Fodder Beet under Sandy Soil Conditions in North Sinai

“…The significant promotive effect of (60 kg N fed -1 + 2 t compost fed -1 ) combination could lead to increase N availability in fodder beet root vicinity with the result that N absorption was increased leading to increase the rate of photosynthesis and metabolic processes, physiological activities of meristemic tissues and dry matter accumulation, consequently, fresh and dry top and root yields of fodder beet got significantly increased. This explanation is supported by (Salem, 2000 andAntoun et al, 2010). The positive effect of compost on fresh and dry top and roots of fodder beet could be associated with its lowering soil pH that could enhance some nutrient availability in the soil and its improving soil physical characteristics in favor of plant root development.…”

RESPONSE OF WHEAT YIELD AND ItS COMPONENTS TO HUMIC SUBSTANCES AND CYANOBACTERIA APPLICATION

“…Because, the essential role of major nutritional elements in plant growth is widely recognized, an effort has made in this review to focus on the synergistic effects of this (H.S) and nutritional elements in the presence of complete and considered to be optimal nutrient supply. Antoun et al (2010) found that addition of humic substances markedly increased wheat plant height, panicle length, 1000-grain weight, grain, straw yield/fed., protein content in grain and NPK uptake of both grain and straw.…”