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| 1 | Effect of potassium on soil conservation and productivity of maize/cowpea based crop rotations in the north-west Indian Himalayas显示文摘Plots under conservation tillage may require higher amount of potassium(K) application for augmenting productivity due to its stratification in upper soil layers, thereby reducing K supplying capacity in a medium or long-term period. To test this hypothesis, a field experiment was performed in 2002-2003 and 2006-2007 to study the effect of K and several crop rotations on yield, water productivity, carbon sequestration, grain quality, soil K status and economic benefits derived in maize(Zea mays L)/cowpea(Vigna sinensis L.) based cropping system under minimum tillage(MT). All crops recorded higher grain yield with a higher dose of K(120 kg K2 O ha-1) than recommended K(40 kg K2 O ha-1). The five years' average yield data showed that higher K application(120 kg K2 O ha-1) produced 16.4%(P<0.05)more maize equivalent yield. Cowpea based rotation yielded 14.2%(P<0.05) higher production than maize based rotation. The maximum enhancement was found in cowpea-mustard rotation. Relationship between yield and sustainable indices revealed that only agronomic efficiency of fertilizer input was significantly correlated with yield. Similarly, higherdoses of K application not only increased the water use efficiency(WUE) of all crops, but also reduced runoff and soil loss by 16.5% and 15.8% under maize and 23.3% and 19.7% under cowpea cover, respectively. This study also revealed that on an average 16.5% of left over carbon input contributed to soil organic carbon(SOC). Here, cowpea based rotation with the higher K application increased carbon sequestration in soil. Potassium fertilization also significantly improved the nutritional value of harvested grain by increasing the protein content for maize(by 9.5%) and cowpea(by 10.6%). The oil content in mustard increased by 5.0% and 6.0% after maize and cowpea, respectively. Net return also increased with the application of the higher K than recommended K and the trend was similar to yield. Hence, the present study demonstrated the potential yield and profit gains along with resource conservation in the Indian Himalayas due to annual additions of higher amount of K than the recommended dose. The impact of high K application was maximum in the cowpea-mustard rotation. | Birendra Nath GHOSH Om Pal Singh KHOLA Ranjan BHATTACHARYYA Kuldeep Singh DADHWAL Prasant Kumar MISHRA | 2016 | Journal of Mountain Science2016，13，4： | 2 |
| 2 | Cervical priming with sublingual misoprostol vs 15-methyl-prostaglandin F2alpha prior to surgical abortion显示文摘 | Vimala NS Dadhwal V | 2005 | Int J Gynaecot Obstet2005，88，2： | 1 |
| 3 | Species-specific prevalence of vaginal candidiasis among patients with diabetes rnellitus and its relation to their glycaemic status 显示文摘 | Goswami R Dadhwal V Tejaswi S | 2000 | Infect2000，41，2： | 1 |
| 4 | A unique congenitalmullerian anomaly: Robert's uterus显示文摘 | Gupta N Mittal S Dadhwal V | 2007 | Arch Gynecol Obstet2007，276，64： | 1 |
| 5 | Analyzing spatial patterns of meteorological drought using standardized precipitation in dex显示文摘 | Patel N R Chopra P Dadhwal V K | | 0，，4： | 1 |
| 6 | Analyzing spatial patterns of meteorological drought using standardized precipitation index显示文摘 | Patel NR Chopra P Dadhwal VK | 2007 | Meteorological Applications2007，14，： | 1 |
| 7 | Estimation of crop evapotranspiration of irrigation command area using remote sensing and GIS显示文摘 | Ray S S Dadhwal V K | 2001 | ARriculmral Water Management2001，49，3： | 1 |
| 8 | A successful management of dengue fever in pregnancy : report of two cases显示文摘 | Singh N Sharma KA Dadhwal V | 2008 | Indian J Med Microbiol2008，26，4： | 1 |
| 9 | Corpus luteum hemorrhage:Rare complication of congenital and acquired coagulation abnormalities显示文摘 | Gupta N Dadhwal V Deka D | 2007 | J Obstet Gynaecol Res2007，33，3： | 1 |
| 10 | Heterotopic cervical and intrauterine pregnancy in a spontaneous cycle 显示文摘 | KUMAR S VIMALA N DADHWAL V | 2004 | European Journal of Obstetrics & Gynecology and Reproductive Biology2004，112，： | 1 |
| 11 | Analyzing spatial patterns of meteorological drought using standardized precipitation index显示文摘 | Patel N R Chopra P Dadhwal V K | 2007 | Meteorologi-cal Applications2007，14，： | 1 |
| 12 | Estimation of urban population in Indo-Gangetic Plains usingnight-time OLS data 显示文摘 | CHOWDHURY P K R MAITHANI S DADHWAL V K | 2012 | International Journal of RemoteSensing2012，33，8： | 1 |
| 13 | Multifocal poly- poid endometriosis in a young woman simulating vaginal and pelvic neoplasm显示文摘 | Kaushal S Dadhwal V Mathur SR | 2010 | J Clin Patho12010，63，5： | 1 |
| 14 | Analyzing spatial patterns of meteorological drought using standardized precipitation index显示文摘 | Patel N R Chopin P Dadhwal V K | 2007 | Meteorological Applications2007，14，： | 1 |
| 15 | An optimal estimation technique for increasing the accuracy of crop forecasts by combining remotely sensed and conventional forecast results.显示文摘 | P. C. Pandey V. K. Dadhwal Baldev Sahai P. P. Kale | 1992 | International Journal of Remote Sensing1992，，14： | 1 |
| 16 | Estimation of crop evapotranspiration of irrigation command area using remote sensing and GIS显示文摘 | Dadhwal V K | 2001 | Agricultural Water Management2001，49，3： | 1 |
| 17 | Successful medical manage-ment of ovarian pregnancy显示文摘 | Mittal S Dadhwal V Baurasi P | 2003 | Int J Gynecol Obstet2003，80，3： | 1 |
| 18 | Evaluating a thermal image sharpening model over a mixed agricultural landscape in India显示文摘 | C. Jeganathan N.A.S. Hamm S. Mukherjee P.M. Atkinson P.L.N. Raju V.K. Dadhwal | 2010 | International Journal of Applied Earth Observations and Geoinformation2010，，2： | 1 |
| 19 | Analyzing spatialpatterns of meteorological drought using standardized precipitation index 显示文摘 | Patel N R Chopra P Dadhwal V K | 2007 | Meteorological Applications2007，14，4： | 1 |
| 20 | Analyzing spatial patterns of meteorological drought using standardized precipitation index显示文摘 | PATEL N R CHOPRA P DADHWAL V K | 2007 | Meteorological Applications2007，14，4： | 1 |
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