A field experiment was conducted to study the growth and productivity of wheat as affected by row spacing and direction of sowing at Rampur, Chitwan, Nepal during the 2007-2008 wheat growing season. The experiment was...A field experiment was conducted to study the growth and productivity of wheat as affected by row spacing and direction of sowing at Rampur, Chitwan, Nepal during the 2007-2008 wheat growing season. The experiment was carried out in 3-factors factorial randomized complete block design comprising two varieties (Gautam and BL-2800), three row spacings (15, 20 and25 cm) and two row directions of sowing (east-west and north-south). The effects of variety and row direction of sowing on grain yield were significant (p < 0.05), but the grain yield was not affected by the row spacing treatment. BL-2800 variety produced higher grain yield (3.53 t·ha-1) as compared to Gautam (3.11 t·ha-1). Both wheat varieties yielded about 11% higher (p < 0.05) grain in the north-south sowing as compared to the eastwest sowing.展开更多
Multilocation testing of the Coordinated Varietal Trial for Mid-hill and High Hill(CVT-MHH)of wheat genotypes were conducted at different hill research stations of Nepal Agricultural Research Council(NARC)during the n...Multilocation testing of the Coordinated Varietal Trial for Mid-hill and High Hill(CVT-MHH)of wheat genotypes were conducted at different hill research stations of Nepal Agricultural Research Council(NARC)during the normal planting season of 2012-13 and 2013-14.Twenty genotypes including two check varieties were included in Randomized Complete Block(RCB)design with three replications in the experiment.Data on the different yield attributing traits were recorded.Highly significant difference(p<0.01)among the genotypes for the days to heading,days to maturity,plant height,thousand grain weight and grain yield was observed in 2012-13.Wheat genotype BL 4061 had the highest grain yield with 3802 kg/ha followed by NL 1153(3736 kg/ha),NL 1159(3733 kg/ha),NL 1154(3674 kg/ha)and NL 1156(3462 kg/ha).In 2013-14 also a highly significant difference among the genotypes for all the recorded traits was observed and these genotypes were stable for the yield and yield attributing traits.The most promising genotype for the grain yield was NL 1153(5816 kg/ha)followed by NL 1178(5760 kg/ha),NL 1156(5454 kg/ha),NL 1159(5259 kg/ha)and NL 1179(5075 kg/ha).From the yield and other yield attributing trait wheat genotypes NL 1055,NL 1153,NL 1159,NL 1156 and NL 1179 need to be tested under farmers’field for further confirmation and release as variety.展开更多
Rice–wheat cropping system(RWCS)of the South Asia is labour-,water-,capital-and energy-intensive,and become less profitable as the availability of these resources diminished.This could be further aggravated with dete...Rice–wheat cropping system(RWCS)of the South Asia is labour-,water-,capital-and energy-intensive,and become less profitable as the availability of these resources diminished.This could be further aggravated with deterioration of soil structure,declining underground water and lesser land and water productivity which ultimately are threat in front of sustainable and profitable RWCS in the region.For improving the profits,production and sustainability of this sequence-a paradigm shift is required.Scientists recommended different resource-conserving technologies(RCTs)viz.zero tillage,laser levelling,irrigation based on soil matric potential,bed planting,direct seeding,mechanical transplanting of rice and crop diversification for this purpose.These technologies are site specific and before selecting any particular RCT for a particular region,soil texture and agro-climatic conditions must be considered.A solitary approach/RCT might not be effective to solve the upcoming issue of producing more food grains with inadequate available water and land.Therefore,an integrated approach is required.But before implementing any approach,different issues relating to RWCS must be discovered,considered and addressed in a holistic manner.In this review,an attempt was made to highlight different issues resulted from the practise of intensive rice–wheat cropping sequence of the region,which must be considered while framing and implementing any integrated approach/project such as conservation agriculture for improving the productions,profits and sustainability of RWCS in the region.展开更多
文摘A field experiment was conducted to study the growth and productivity of wheat as affected by row spacing and direction of sowing at Rampur, Chitwan, Nepal during the 2007-2008 wheat growing season. The experiment was carried out in 3-factors factorial randomized complete block design comprising two varieties (Gautam and BL-2800), three row spacings (15, 20 and25 cm) and two row directions of sowing (east-west and north-south). The effects of variety and row direction of sowing on grain yield were significant (p < 0.05), but the grain yield was not affected by the row spacing treatment. BL-2800 variety produced higher grain yield (3.53 t·ha-1) as compared to Gautam (3.11 t·ha-1). Both wheat varieties yielded about 11% higher (p < 0.05) grain in the north-south sowing as compared to the eastwest sowing.
文摘Multilocation testing of the Coordinated Varietal Trial for Mid-hill and High Hill(CVT-MHH)of wheat genotypes were conducted at different hill research stations of Nepal Agricultural Research Council(NARC)during the normal planting season of 2012-13 and 2013-14.Twenty genotypes including two check varieties were included in Randomized Complete Block(RCB)design with three replications in the experiment.Data on the different yield attributing traits were recorded.Highly significant difference(p<0.01)among the genotypes for the days to heading,days to maturity,plant height,thousand grain weight and grain yield was observed in 2012-13.Wheat genotype BL 4061 had the highest grain yield with 3802 kg/ha followed by NL 1153(3736 kg/ha),NL 1159(3733 kg/ha),NL 1154(3674 kg/ha)and NL 1156(3462 kg/ha).In 2013-14 also a highly significant difference among the genotypes for all the recorded traits was observed and these genotypes were stable for the yield and yield attributing traits.The most promising genotype for the grain yield was NL 1153(5816 kg/ha)followed by NL 1178(5760 kg/ha),NL 1156(5454 kg/ha),NL 1159(5259 kg/ha)and NL 1179(5075 kg/ha).From the yield and other yield attributing trait wheat genotypes NL 1055,NL 1153,NL 1159,NL 1156 and NL 1179 need to be tested under farmers’field for further confirmation and release as variety.
基金Authors are highly thankful to Punjab Agricultural University,Ludhiana,Punjab,India for providing them an opportunity to write this review.
文摘Rice–wheat cropping system(RWCS)of the South Asia is labour-,water-,capital-and energy-intensive,and become less profitable as the availability of these resources diminished.This could be further aggravated with deterioration of soil structure,declining underground water and lesser land and water productivity which ultimately are threat in front of sustainable and profitable RWCS in the region.For improving the profits,production and sustainability of this sequence-a paradigm shift is required.Scientists recommended different resource-conserving technologies(RCTs)viz.zero tillage,laser levelling,irrigation based on soil matric potential,bed planting,direct seeding,mechanical transplanting of rice and crop diversification for this purpose.These technologies are site specific and before selecting any particular RCT for a particular region,soil texture and agro-climatic conditions must be considered.A solitary approach/RCT might not be effective to solve the upcoming issue of producing more food grains with inadequate available water and land.Therefore,an integrated approach is required.But before implementing any approach,different issues relating to RWCS must be discovered,considered and addressed in a holistic manner.In this review,an attempt was made to highlight different issues resulted from the practise of intensive rice–wheat cropping sequence of the region,which must be considered while framing and implementing any integrated approach/project such as conservation agriculture for improving the productions,profits and sustainability of RWCS in the region.
