Abstract
Background:The use of microbial inoculants holds a great promise to improve crop yield without the negative environmental and health hazard associated with chemical fertilizer.Aim:To investigate ifPseudomonasspp. (Pseudomonas kilonensisF113 andPseudomonas protegensCHA0 strains) have promoting effects on vegetative growth and yield of different maize genotypes (viz. AFLATOXIN SYN 4W, TZB-SR, AFLATOXIN R SYN 2Y, AFLATOXIN SYN 3W and AFLATOXIN SYN-2Y) under different soil types.Methods:Both pot and field experiments were employed. Bacterialized seeds were sown (2 seeds/pot/stand).Results:Pot experiment showed that both the bacterial species significantly stimulated the growth of maize shoot length, stem girth, leaf length, root length and root weight. The effect of genotypes AFLATOXIN SYN 4W, TZB-SR, AFLATOXIN R SYN 2Y and AFLATOXIN SYN 3W are not significantly different from one another but AFLATOXIN SYN-2Y showed a significantly lower increase in the measured parameters. No significant difference was observed according to soil types. AFLATOXIN SYN 4W showed a significantly higher root weight while AFLATOXIN R SYN 2Y showed a significantly higher root length compared to the other maize genotypes. Moreover,Pseudomonassignificantly increased maize growth and yield under field experiment. AFLATOXIN R SYN 2Y and AFLATOXIN SYN 4W showed a significantly higher yield than the other maize genotypes studied.Conclusion:We concluded thatPseudomonas kilogenensisF113 andPseudomonas protegensCHA0 are potential biofertilizers.
Highlights
Maize (Zea mays L.) is a common cereal that is intensively cultivated worldwide [1]
We concluded that Pseudomonas kilogenensis F113 and Pseudomonas protegens CHA0 are potential biofertilizers
Chemical fertilizers lead to soil degradation and pose health hazard to both human and farm animals [5]
Summary
Maize (Zea mays L.) is a common cereal that is intensively cultivated worldwide [1]. Maize genotypes differ in starch structures and composition of maize kernels (content of amylase and/or amylopectin), grain filling rate, type of endosperm, i.e. floury (dent) vs. horny (flint) and in earliness and rate of maturation [2]. Maize genotypes can differ in a Numerous agricultural soils worldwide are deficient in plant nutrients. Significant fertilizer requirement is a major challenge for sustainable food production. These plant nutrients were provided solely in the form of synthetic chemical fertilizers. Such chemical fertilizers are quite expensive and increase crop production cost. Chemical fertilizers lead to soil degradation and pose health hazard to both human and farm animals [5]. The use of microbial inoculants holds a great promise to improve crop yield without the negative environmental and health hazard associated with chemical fertilizer
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