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Role of potassium fertilizer on nitrogen fixation in chickpea (Cicer arietinum L.) under quantified water stress.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Singh, Narender Kataria, Nisha |
| Copyright Year | 2012 |
| Abstract | Two genotypes of chickpea H-82-2 and H-208 were investigated for the role of potassium on nitrogen fixation in alleviating water stress. Crop was raised in earthen pots and potassium was added to the soil as muriate of potash in different concentrations i.e. 60, 90 and 120 ppm in addition to the existing level. Water stress was created by withholding irrigation at different sampling stages i.e. vegetative, 50% flowering and 50% pod formation. Water stress resulted in marked decrease in leghemoglobin, nitrate (NO3) and nitrite (NO2) contents and the activity of enzymes of nitrogen assimilation i.e. nitrate reductase (NRA) and nitrite reductase (NiRA) in both the genotypes. The nitrogen fixation were least affected when crop was stressed at the vegetative stage. Flowering stage proved most sensitive to water stress where reduction in leghemoglobin, NO3 and NO2 content and NRA and NiRA activity was maximum. The reduction was relatively more in H-208 genotype as compared to H-82-2. There was a corresponding increase in nitrogen fixation and its attributes with the increase in the potassium level. The response of applied potassium was relatively more in H-208 than H-82-2 under water stress conditions. |
| Starting Page | 377 |
| Ending Page | 392 |
| Page Count | 16 |
| File Format | PDF HTM / HTML |
| Volume Number | 8 |
| Alternate Webpage(s) | http://ijat-aatsea.com/pdf/v8_n1_12_January/32_IJAT%202012_8_1__Narender%20Singh_FX.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
