Some Maize Leaf Growth Traits as Influenced by Some Integrated Fertilization Regimes

Abstract

The study investigated the impact of eleven nitrogen and five phosphorus fertilization regimes on some leaf traits 70 days after sowing (DAS) of maize cultivar single hybrid 168. Results showed that, 120kg N/fad., from different sources i.e., chemical fertilizer, compost and biofertilizers were effectless on number of leaves/plant at 70 days after sowing (DAS) of both seasons and their combined analysis. Number of leaves either under or above the ear of mono eared maize plant were not affected due to applying different nitrogen fertilization regimes studied. Leaf area/maize plant was significantly affected in the first season only. The largest leaf erea/plant (4254.22 cm2/plant) was obtained in the first season, with the appliance of the integrated N fertilization regime (90 kg N from chemical fertilizer +30 kg N from compost). Area of leaves under ear resulted from the integrated fertilization regime (cerealine + 60 kg chemical N+ 60 kg N from compost) was larger than that in the control treatment by 30.94% based on combined results. Regarding to the area of leaves above the ear, results of the 1 st season displayed that area of leaves above the ear were at par in treatments N 2 , N 3 , N 4 , N 5 and N 6. Application of either 120kg chemical fertilizer (N 2) or 90 kg chemical N +30 kg N from compost (N 3) was conjucated with larger values of leaf area index comparably with other regimes. According to combined analysis, ear leaf area ranged from 481.87 cm 2 in control treatment to 625.89 cm 2 in the integrated nitrogen fertilization regimes comprised of cerealine + 60 kg chemical N/fad. + 60 kgN from compost. From the results of combined analysis, it could be noted that tassel leaf area ranged between 150.99 to 217.87 cm 2 under biofertilization (N 11) and the integrated fertilization regimes (N 8) in the same order. Insignificant phosphorus fertilization effect under study on maize leaf traits studied at 70DAS, was recorded in both seasons and the combined analysis.

Impact of Bio-Chemical Phosphorus Fertilization and Lithovit Regimes on Some Qualitative Traits of Various Berseem Varieties

“…Phosphorus is the second major nutrient deficient in Egyptian soils. Phosphorus is of a great moment in photosynthesis, synthesis of nucleic acids, proteins, and lipids (Ayub et al, 2013;Khattab et al, 2019). Phosphorus displays a dogmatic role in legume seedling establishment its shoots and roots (Fathy, 2014).…”

“…Phosphorus solubilizing bacteria (PSB) plays an important role in enhancing P efficiency of natural and applied P and improving field crop"s productivity (Khan et al, 2009). Phosphate solubilizing bacteria inoculation decrease or may minimize the supply with chemical P fertilizers up to 100% depending on soil and climatic conditions (Fazlullah et al, 2018;Khattab, 2019). Phosphate solubilizing bacteria (PSB) produces some organic acids in the soil that reduce the pH and thus solubilize calcium phosphate complexes.…”