![]() The main objective of this study was to screen efficient phosphate solubilizing bacteria from tomato rhizosphere soil. It is essential to stabilize a mechanism to access P for plants with an efficient, cheap, and eco-friendly approach for enhanced crop growth and production. Most of the soil is deficient in plant available phosphorous and due to economic limitations majority of Ethiopian farmers applied inadequate fertilizers. Phosphorous is an essential macronutrient for plant growth and development. Moreover, synergetic application of organic supplements (compost, farmyard, bone meal, or other biowastes), bioinoculants, and proper agrochemicals maximize production and environmental health and is feasible for the economic, social, and ecological sense of balance. Screening potential strains and evaluating their competence under different conditions would be the future perspectives to develop efficient inoculants. Consequently, these promising isolates would be recommended for tomato production of higher yield and sustainability after verifying their efficacy at different agroecology and taxonomic identification. Therefore, the results of this study imply that application of competent PSB isolates together with nutrient supplements improved symbiotic effectiveness, sustainable production, and environmental health. Based on the overwhelming performance, K-10-41 and Mk-20-7 application together with compost and fertilizer mixture were found effective. Mixing 50% of recommended compost and DAP fertilizer application enhanced tomato vegetative growth and fruit yield (21 fruits/plant harvested that weighed 872.46 gm). Bone meal was however, one of the top fruit development inducers (harvested 20.94 fruits/plant weighing 881.97 gm). Compost application promoted tomato-PSB interaction and induced tomato vegetative growth whereas bone meal was least promotor for most of tomato plant assays. Isolate K-10-41 significantly promoted tomato plant height, floral development, and fruit yield, Mk-20-7 enhanced height and fruit weight whereas K-10-27 induced tomato fruit numbers. PSB isolates showed positive interaction and achieved significant plant assays including plant height, leaves, branches, flowers, and fruit development. Tomato seeds were treated with 10 selected PSB isolates separately and grown for 20 days on seedbed, then transplanted to field that was treated with external P-sources and enriched by PSB inoculum. This study aimed to evaluate the efficacy of PSB isolates coinoculated with compost, bone meal, and DAP fertilizer on tomato growth response. Phosphate solubilizing bacteria have multi-dimensional benefits in broad host range interaction, accessing nutrients, phytohormone induction, stress alleviation, biocontrol activity, and eco-friend approach. Moreover, developing IPM technology is recommended for better healthy agricultural production and sustainability. It is important to practice proper agricultural inputs, reduce hazardous chemical residues, protect humans, other beneficial organisms and the environment. ![]() Intense agrochemical application leads to adverse environmental and health impacts due to deposit of toxic chemicals, residue leakage to water bodies and air pollution. ![]() Farmers in the study areas applied inaccurate agrochemicals dose, rate, and application schedule that foster repeated spray. Ethiopian tomato production is very low due to various contributing factors including lack of improved varieties, diseases, pests, poor farming system, soil fertility maintenance as well as poor irrigation system. Most commercially productive tomato varieties are highly sensitive to disease, vulnerable to nutrient deficiency, and other abiotic stress that requires rigorous agrochemical inputs. Tomato is one of the main commercial cash crops in these areas. ![]() Agrochemicals are applied on farm to enhance soil fertility, reduce pathogens, and induce plant growth. Koka, Meki and Ziway are known for their vegetable production as well as intensive agrochemicals consumption. Improved agricultural technologies increase production, quality, sustain food security, economic development and natural resource conservation. Production intervention is needed by introducing and adopting proper agronomic practices. Promoting the agricultural sector with up-to-date technologies and inputs is convenient to enhance productivity.
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