Bio Fertilizers with Organic Manures: a Better Strategy for Sustainable Productivity
Waqas Liaqat*, Haseeb Ahmad and Muhammad Faheem Jan
Department of Agronomy, Agricultural University Peshawar, Pakistan
Submission: April 10, 2018; Published: June 25, 2018
*Corresponding author: Waqas Liaqat, Department of Agronomy, Faculty of Crop Production, The University of Agriculture Peshawar, Pakistan, Email: email@example.com
How to cite this article: Waqas L, Haseeb A, Muhammad F J. Bio Fertilizers with Organic Manures: a Better Strategy for Sustainable Productivity. Curr
Trends Biomedical Eng & Biosci. 2018; 15(5): 555921. DOI: 10.19080/CTBEB.2018.15.555921.
The application of microbial inoculants (biofertilizers) is a promising technology for future sustainable farming systems in view of rapidly decreasing phosphorus stocks and the need to more efficiently use available nitrogen (N). Various microbial taxa are currently used as biofertilizers, based on their capacity to access nutrients from fertilizers and soil stocks, to fix atmospheric nitrogen, to improve water uptake or to act as bio control agents. Bio-fertilizers with organic manures are the best modern tools and gift of our agricultural science as a replacement to our conventional fertilizers. Conventional fertilizers contain compost, household wastes and green manures which are not as effective as chemical fertilizers. So, farmers often try to use chemical fertilizers in the field for crop development. But obviously the chemical fertilizers are not environment friendly because of their chemical toxicity that can cause water, air and soil pollution and can spread cancer causing agents. Moreover, they may destroy the fertility of the soil in a long run. Scientists have developed the way of organic farming by use of “Bio-fertilizers” along with natural manures to prevent chemical pollution in farm lands. Bio-fertilizer contains microorganisms which promote the adequate supply of nutrients from organic manures to the host plants and ensure their proper development of growth and regulation in their physiology. Bio-fertilizer being essential components of organic farming plays a vital role in maintaining long term soil fertility and sustainability. It can be concluded that application of bio-fertilizer with organic manure could improve production on sustainable basis.
Keywords: Biofertilizers; Soil health; Eco-friendly; Chemical fertilizers; Sustainable production
One of the major crop productivity constraints in the third world is the unavailability of crop nutrients in appropriate amount and form . Modern agricultural practices emphasize widespread use of fertilizers which certainly increased grain yield in many countries in the last six decades. However, long term use of chemical fertilizers also led to a decline in crop yield and soil fertility in the intensive cropping system . It is evident that over fertilization increases concentration of several plant nutrients in surface as well as ground water, which creates a potential health hazard. This has in turn paved the way for integrated plant nutrient management. The use of renewable resources and inputs is one the fundamental principles of sustainable agriculture that enables maximum crop productivity and minimal environmental risk . Therefore, an increased yield with reduced environmental risk requires new cultivation strategies including biological fertilizer . Bio fertilizer is a natural input that can be applied as a complement to, or as a substituent of chemical fertilizer in sustainable agriculture . Integrated use of biofertilizers with natural manures offer a low capital investment and eco-friendly route to boosting farm productivity . Chemical fertilizers have outstandingly boosted crop yields about three decades back. However, yields
are currently getting low or stagnated. Moreover, poor-resource holder farmers in developing countries apply little or no fertilizer due to high cost of procurement.
Furthermore, applications of chemical fertilizers have caused ecological problems, degraded soil physico-chemical and biological qualities thereby led to poor crop yields. In an effort to safe guard the environment, maintain soil as the store house and enhance sustainable crop yields, replacing chemical fertilizer is of paramount importance. In such scenario, bio-fertilizers (microbial inoculants) and organic manures could be recommended. Bio-fertilizer and organic manure are cheap and eco-friendly source of plant nutrients for sustainable crop production in low-input agriculture. Application of organic manures has positive effects on soil physical and biochemical properties. It lowers soil bulk density; increases water holding capacity, cation exchange capacity (CEC), build up beneficial soil microbes, improve soil structure and enhance stable soil aggregates [7-9]. The role of biofertilizers alone or in combination with organic or inorganic fertilizers has recently gained recognition in sustainable crop production [10-12]. These microorganisms play crucial roles such as, producing plant growth stimulating hormones, nutrients cycling thereby enhancing plant nutrients availability and uptake, nitrogen
fixation, improve plant health, drought resistance and reclaim
degraded soil [13-16].
It can be concluded that application of biofertilizers in
combination with organic manures could rehabilitate the
degraded soil and reclamation of biodiversity for sustainable
agriculture would be the ultimate result.