Maize Yield Response under Various Phosphorus Sources and their Ratios

Abstract

Improper use of fertilizers and its ratio is one of the main reasons for low productivity; therefore balance fertilization is required to maintain crop production and improved soil fertility. Therefore the experiment was carried out at Cereal Crop Research Institute (CCRI) Pirsabak, Distract Nowshera KP, Pakistan during Kharif 2016. To study the effect of different phosphorus (P) sources and their ratios on maize yield and yield components, an experiment was carried out in a Randomized Complete Block Design (RCBD) with three replication. The treatments consisted of sole application of Farmyard Manure (FYM), Poultry Manure (PM) and Diammonium Phosphate (DAP), 75% FYM+25% DAP, 50% FYM+50% DAP, 75% PM+25% DAP, 50% PM+50% DAP and a control treatment with no P fertilizer. Phosphorus was applied at the rate of 100 kg ha -1 from different sources in different ratios. The results indicated a significant effect of different phosphorus sources on days to tasselling, days to silking, days to maturity, plant height, grains ear -1 , grain yield, biological yield, and harvest index, whereas the emergence m -2 was found non-significant with different P sources. The combined use of organic and inorganic P sources delayed tasselling, silking and maturity. Plant height, grains ear -1 , biological yield, grain yield, and harvest index was also higher with the addition of P from both sources as compared with the sole application of organic or inorganic fertilizer. The combined application of organic manures 50:50 (FYM or PM) and inorganic fertilizer (DAP) performed better as compared to the rest of the ratios and produced higher yield and yield components.

Integrated phosphorus nutrient sources improve wheat yield and phosphorus use efficiency under sub humid conditions

“…Maximum grains s pike -1 was achieved by the application of higher dose phosphorus [ 47 ]. The integrated application of P fertilizer showed higher grains per ear in cereal (maize) field as compared to plot where sole fertilizer treated plots [ 48 ].…”

“…TGW of wheat plants was high significantly where fertilizers were applied in integrated form. Use of combined 50:50 of P organic and inorganic sources helps to improve grain yield as compared to control treatment [ 48 ]. Moreover, optimum dose of phosphorus application helped in achieving maximum 1000 grain weight [ 47 ].…”

Phosphorus application improves grain yield in low phytic acid maize synthetic populations

“…However, care must be taken when interpreting these results, since the variations beyond the studied seeds and location were not examined. The decline in days to the tasselling, silking and anthesis stages ( Table 3 ), with the increase in P application, was observed in all varieties and this was in agreement with the work of Ali et al. (2019) and Ye et al.…”

Simulation analysis of fertilizer discharge process using the Discrete Element Method (DEM)

“…Currently, China has one of the highest rates of chemical fertilizer use, with fertilizer being applied to 67% of grain crops [ 1 ]. Therefore, how to improve fertilizer use efficiency has become a national and global concern [ 2 – 4 ]. One of the ways to improve the efficiency of using chemical fertilizers is through the development and promotion of improved and sustainable fertilizer discharge devices to replace the conventional fertilizer application methods for better uniformity of fertilizer application.…”