Print ISSN: 2077-5822

Online ISSN: 2618-1479

Keywords : Biofertilizer

Interactive Effect of Different Phosphoure Levels, Biofertilizer and Organic Fertilization on Phosphorus Availability and Uptake in Corn Plant (Zea mays L.)

Iman Qasem ohammed; Hamad M. Salih; Hadi M . Kareem

Al-Qadisiyah Journal For Agriculture Sciences, 2016, Volume 6, Issue 1, Pages 79-89
DOI: 10.33794/qjas.2016.110164

This experiment aims at testing the activity of biofertilizer, level of phosphorus and humic acid on P availability in the soil. The experiment has been executed in wood shade house of Soil and Water Resource Department College of Agriculture, Abu-Ghraib. Soil is collected from the soil surface (0-30 cm) of the field experiment, passed through the sieve of 4 mm then sterilized with methylbromide and packed at the rate of 5 kg soil / plastic pot.
The experiment involves three levels of P fertilizer (0 , 30 and 60 kg P ha-1) P0, P1 , P2, three levels of humic acid (0 , 20 and 40 kg H.A. ha-1), and two levels of biofertilizer BO (seed not inoculated) and B1 (seed inoculated with biofertilizer) and all possible combinations among these variables. There are 18 treatments each replicated three times. The N and K fertilizers were added to all experiment units at the rate of 240 kg N and 120 kg K . ha-1 . The RCD is adopted. P fertilizer and humic acid are added and mixed with soil surface in pots, and corn seed of biofertilizer treatments inoculated. Corn seeds of Var. 5018 are planted at the rate of 8 seeds pot-1 in 10-5-2013, then seedling thinned to 4 plant pot-1 after 10 days from planting. The results can be summarized as following:
1. The results from pot experiment show active biofertilizer as there is an increase in availability of P in the soil and its uptake by corn plant. Moreover, there are significant increases in dry weight, weight of corn roots by inoculating corn seed with biofertilizer.
2.There is no significant difference between 30 kg P ha-1 and 60 kg P ha-1 on the most of the studies variables (above).

The Effect of Phosphate Fertilization, Biofertilizer and Humic Acid on Phosphorous and Iron Availability in Soil

Iman Qasem Mohammed; Hamad Mohammed Salih; Hadi Mohammed Kareem

Al-Qadisiyah Journal For Agriculture Sciences, 2015, Volume 5, Issue 2, Pages 15-25
DOI: 10.33794/qjas.2015.108680

This experiment is conducted in the Research Station, Abu-Ghraib , directorate of Agricultural Research , Ministry of Agriculture during the Autumn season of 2013, to investigate the effect of P fertilizer , bio fertilizer, humic acid and their interaction on the availability of, P and Fe, in the soil, their uptake, on yield and some yield components of corn(Zea mays L).
The RCBD has been adapted and each treatment has been replicated three times. The experiment treatments are two levels of P fertilizer, P0 (without adding P fertilizer), P1 (adding 30 kg P. ha-1), three levels of humic acid, H0 (without
adding humic acid), H1 (adding 20 kg H.A ha-1), H2 (adding 40 kg H.A. ha-1), and B0 (without inoculation of seed), B1 (inolculating seed with Bacillus), B2 (inoculating seed with Pseudomonas bacteria). P fertilizer and humic acid treatments are added and mixed with soil surface (10-15 cm). All experiment units have received 240 kg N ha-1 and 120 kg K ha -1 in three doses during the plant growth. Inoculated and other corn seed are planted in 10-7-2013 in plots of (3x3) m2 with distance between plants 0.25 and between lines 0.75 forming 4 lines and plant population 48 plant plot-1. The results can be summarized as follows:
In the field experiment, the main effects of P fertilizer, biofertilizer and humic acid are significant in increasing the availability of P and Fe in soil and eventually increasing their uptake by corn plant. However, more significant increases are associated with all possible interactions of these factors.
The highest availability of P, in soil is obtained at the interaction treatment of P1B1H2, and Fe at the interaction treatment P1B2H2 at both silking and harvesting stages of corn.