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Improved drought tolerance in Festuca ovina *** plant growth promoting bacteria

Journal of Arid Land 2023年第6期15卷 740-755页

作者： Fateme RIGI Morteza SABERI Mahdieh EBRAHIMI Department of Range and Watershed Management Faculty of Water and SoilUniversity of ZabolZabol ***Iran

Numerous ecological factors influence a plant’s ability to live and grow,in which dryness is a substantial constraint on plant growth in arid and semi-arid *** response to a specific environmental stress,plants can use the most effective bacteria to support and facilitate their growth and ***,plant growth promoting rhizobacteria(PGPR)is widely used to reduce drought stress on plant *** this study,the effects of drought on Festuca ovina ***,growth,and nutrient absorption were investigated using PGPR in a factorial test with a completely random design under four water *** water content was kept at 100%FC(field capacity),70%FC(FC),50%FC,and 30%*** treatments were inoculated with Azotobacter vinelandii,Pantoea agglomerans+Pseudomonas putida,and a mixture of *** showed that the effects of drought stress were significantly reduced(Pbio-fertilizers had a greater influence on seed germination than the single ***+*** under 30%FC condition resulted in higher increases in stem,root length,and plant dry *** highest uptake of nutrients was observed for the combined treatment of bio-fertilizers under 30%FC ***,the use of *** and ***+***,applied separately or combined,increased tolerance to drought stress in *** by increased germination indices,dry weight,stem length,and root *** of the beneficial effects of PGPR on the growth characteristics of plants under drought conditions and the reduction of negative effects of drought stress,inoculating *** seeds with Azotobacter and Pseudomonas is recommended to improve their growth and development characteristics under drought ***,as an affordable and environmentally friendly method,can improve the production of forage in water-stress rangelands.

关键词： bio-fertilizers element uptake drought stress rangeland water scarcity

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Effect of Diazotrophs and Chemical fertilizers on Production and Economics of Okra (<i>Abelmoschus esculentus</i>, L.) Cultivars

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American Journal of Plant Sciences 2014年第1期5卷 168-174页

作者： Barnali Mal Premananda Mahapatra Santanu Mohanty Department of Soil Science and Agricultural Chemistry Orissa University of Agriculture and Technology Bhubaneswar India Department of Vegetable Science College of Agriculture Orissa University of Agriculture and Technology Bhubaneswar India

The effect of diazotrophs and chemical fertilizers on yield attributing characters and economics of okra cultivation was evaluated. Application of highest dose of NPK @100% in combination with vermicompost (5 t ha-1) and biofertilizers with FYM increased the fruit yield of okra (cultivar Mahyco-10) considerably with yield varying between 80.00 q ha-1 to 227.13 q ha-1 and 80.49 q ha-1 to 229.62 q ha-1 during 2010 and 2011 respectively. In okra cv. Utkal Gaurav the fruit yield varied from 47.68 q ha-1 to 129.84 q ha-1 in 2010 and 47.27 q ha-1 to 131.35 q ha-1 in 2011. As regards the net return, highest net profit of Rs 87,630 and Rs. 89,370 ha-1 from the okra was realized over an investment of Rs. 71,360 ha-1 during both the years with a benefit cost ratio of 2.23 and 2.25 when 100% NPK integrated with vermicompost @5t ha-1 and biofertilizers with FYM applied in okra ***-10. The highest net return of Rs. 14,350 in 2010 and Rs. 15,260 in 2011 with an investment of Rs. 63,550 each year was found in cultivar Utkal Gaurav under highest level of nutrient application.

关键词： bio-fertilizers Vermicompost Diazotrophs Okra

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