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Effect of Potassium on Potato Tuber Production in Acid Soils of Malepatan, Pokhara / Adhikary, Bishnu H. in Nepal Agriculture Research Journal, Vol. 7 (2006)
[article]
Title : Effect of Potassium on Potato Tuber Production in Acid Soils of Malepatan, Pokhara Material Type: printed text Authors: Adhikary, Bishnu H., Author ; Krishna B. Karki, Author Publication Date: 2006 Article on page: 42-48 p Languages : English (eng) Keywords: Basal application, potassium levels, Solanum tuberosum, tuber production and topdressing Abstract: Soils of Pokhara valley, especially Malepatan, are fine textured silt loam, extremely acidic in
nature (3.7-4.0 pH) and are medium in soil potassium content. On-station experiments were
conducted to assess the response of potassium (K2O) and its application methods on potato tuber
yield in an extremely acid soil condition. Six potassium levels (0, 50, 75, 100 kg ha-1 as basal
application, 50 kg basal plus 50 kg top dressed, and 50 kg basal plus 50 kg foliar application)
were tested in the experiment for three consecutive years (2000, 2001 and 2002). A randomized
complete block design (RCBD) with 3 replications was employed. Variety used was MS 42.
Nitrogen (N), phosphorus (P2O5) and compost were applied as basal dose in each plots at the rate
of 100 kg, 50 kg and 20 t ha-1, respectively. Three years mean result on the plant growth
characters revealed that tallest plant height was recorded (33.22 cm) when 50 kg ha-1 potassium
was applied basally and 50 kg ha-1 top-dressed. The trend was quite similar in tillers production
(6.96 branches plant-1) and biomass production (168.66 g plant-1). Maximum of 473.33-g plant-1
of tubers was produced when 100 kg of potassium was applied basal single dose. Highest tuber
yield of 24.75 t ha-1 of tuber were produced when 50 kg potassium was applied basally and 50
kg top- dressed, a total of 100 kg ha-1. Highly significant response of potassium levels on tuber
production was observed in all the years. The results of this investigation suggested that
application of potassium (K2O) at the rate of 50 kg ha-1 basal and 50 kg ha-1 top-dressed in 45
days could increase potato tuber yield satisfactorily in extremely acid soil condition.Link for e-copy: http://elibrary.narc.gov.np/?r=45
in Nepal Agriculture Research Journal > Vol. 7 (2006) . - 42-48 p[article] Effect of Potassium on Potato Tuber Production in Acid Soils of Malepatan, Pokhara [printed text] / Adhikary, Bishnu H., Author ; Krishna B. Karki, Author . - 2006 . - 42-48 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 7 (2006) . - 42-48 p
Keywords: Basal application, potassium levels, Solanum tuberosum, tuber production and topdressing Abstract: Soils of Pokhara valley, especially Malepatan, are fine textured silt loam, extremely acidic in
nature (3.7-4.0 pH) and are medium in soil potassium content. On-station experiments were
conducted to assess the response of potassium (K2O) and its application methods on potato tuber
yield in an extremely acid soil condition. Six potassium levels (0, 50, 75, 100 kg ha-1 as basal
application, 50 kg basal plus 50 kg top dressed, and 50 kg basal plus 50 kg foliar application)
were tested in the experiment for three consecutive years (2000, 2001 and 2002). A randomized
complete block design (RCBD) with 3 replications was employed. Variety used was MS 42.
Nitrogen (N), phosphorus (P2O5) and compost were applied as basal dose in each plots at the rate
of 100 kg, 50 kg and 20 t ha-1, respectively. Three years mean result on the plant growth
characters revealed that tallest plant height was recorded (33.22 cm) when 50 kg ha-1 potassium
was applied basally and 50 kg ha-1 top-dressed. The trend was quite similar in tillers production
(6.96 branches plant-1) and biomass production (168.66 g plant-1). Maximum of 473.33-g plant-1
of tubers was produced when 100 kg of potassium was applied basal single dose. Highest tuber
yield of 24.75 t ha-1 of tuber were produced when 50 kg potassium was applied basally and 50
kg top- dressed, a total of 100 kg ha-1. Highly significant response of potassium levels on tuber
production was observed in all the years. The results of this investigation suggested that
application of potassium (K2O) at the rate of 50 kg ha-1 basal and 50 kg ha-1 top-dressed in 45
days could increase potato tuber yield satisfactorily in extremely acid soil condition.Link for e-copy: http://elibrary.narc.gov.np/?r=45 Enhancing Maize Productivity Through the Use of Split Application of Nitrogen and Irrigation at Critical Stages in Sandy Soils of Rampur, Chitwan. / Adhikary, Bishnu H.
Title : Enhancing Maize Productivity Through the Use of Split Application of Nitrogen and Irrigation at Critical Stages in Sandy Soils of Rampur, Chitwan. Material Type: printed text Authors: Adhikary, Bishnu H., Author ; Krishna B. Karki, Author Publication Date: 2008 General note: In: IAAS Plant Breeding Journal, 2008, vol 3:37-42. Languages : English (eng) Keywords: Basal and split application, critical stages, irrigation, topdressing, nitrogen use efficiency zea mays. Abstract: Split application of Fertilizer-N and subsequent irrigation on maize field at critical stages could help increase urea-N use efficiency in sandy soils of Chitwan and thus crop productivity increased. To evaluate the effects of split application of urea-N and irrigation at critical stages of crop growth, an experiment was conducted in the acidic sandy soils of NMRP farmland during the year 2005. Ten t/ha of compost and 60 :40 kg P2O5 and K2O, respectively, were applied basally in all the experimental plots. Some plots received only 50 ky Fertilizer-N and in some 100 kg/ha, which were applied either basally or splitted 2 or 3 times and crop was irrigated 1 or 2 times at the critical stages of crop growth and some crops were not irrigated. Crop was planted at the plot size of 12 sq.m in February and harvested in June. Variety used in the experiment was Arun-4. Crop growth and yield parameters were taken into study and analysed statistically. The crop growth parameters such as plant height, stem girth, straw yield,leaf numbers and number of nodes per plant were observed to be significantly affected by the treatments. Similarly, their effects on test weight (100 grains wt.) and grain yield were also found significantly affected. The highest test wt (341.33 g) was recorded when the crop was supplied with 100 kg N which was applied half as basal and half as topdressing at knee-high stage, followed by 2 irrigations, one at topdressing time and anotherin tasseling stage.Maximum grain yield(4.04 t/ha) was recorded at this level of N application and frequencies of irrigation which produced approximately 134 % higher grain yields as compared to that of non-treated crop followed by 3 split application of fertilizer-N (half basal, ¼ at knee high stage and ¼ at tasseling stage) provided with 2 irrigation, one at 1st topdressing and 2nd in 2nd topdressing time (3.86t/ha0. It is concluded that 3 split application of fertilizer-N with 2 subsequent irrigation at critical stages could help increase the urea-N efficiency and increase the crop productivity of winter maize in sandy soil condition of Chitwan. Enhancing Maize Productivity Through the Use of Split Application of Nitrogen and Irrigation at Critical Stages in Sandy Soils of Rampur, Chitwan. [printed text] / Adhikary, Bishnu H., Author ; Krishna B. Karki, Author . - 2008.
In: IAAS Plant Breeding Journal, 2008, vol 3:37-42.
Languages : English (eng)
Keywords: Basal and split application, critical stages, irrigation, topdressing, nitrogen use efficiency zea mays. Abstract: Split application of Fertilizer-N and subsequent irrigation on maize field at critical stages could help increase urea-N use efficiency in sandy soils of Chitwan and thus crop productivity increased. To evaluate the effects of split application of urea-N and irrigation at critical stages of crop growth, an experiment was conducted in the acidic sandy soils of NMRP farmland during the year 2005. Ten t/ha of compost and 60 :40 kg P2O5 and K2O, respectively, were applied basally in all the experimental plots. Some plots received only 50 ky Fertilizer-N and in some 100 kg/ha, which were applied either basally or splitted 2 or 3 times and crop was irrigated 1 or 2 times at the critical stages of crop growth and some crops were not irrigated. Crop was planted at the plot size of 12 sq.m in February and harvested in June. Variety used in the experiment was Arun-4. Crop growth and yield parameters were taken into study and analysed statistically. The crop growth parameters such as plant height, stem girth, straw yield,leaf numbers and number of nodes per plant were observed to be significantly affected by the treatments. Similarly, their effects on test weight (100 grains wt.) and grain yield were also found significantly affected. The highest test wt (341.33 g) was recorded when the crop was supplied with 100 kg N which was applied half as basal and half as topdressing at knee-high stage, followed by 2 irrigations, one at topdressing time and anotherin tasseling stage.Maximum grain yield(4.04 t/ha) was recorded at this level of N application and frequencies of irrigation which produced approximately 134 % higher grain yields as compared to that of non-treated crop followed by 3 split application of fertilizer-N (half basal, ¼ at knee high stage and ¼ at tasseling stage) provided with 2 irrigation, one at 1st topdressing and 2nd in 2nd topdressing time (3.86t/ha0. It is concluded that 3 split application of fertilizer-N with 2 subsequent irrigation at critical stages could help increase the urea-N efficiency and increase the crop productivity of winter maize in sandy soil condition of Chitwan. Enhancing Potato Tuber Production Through the Use of Potassium in Acid Soils of Malepatan, Pokhara / Adhikary, Bishnu H. ; Madhu S. Ghale
in Proceedings of the fifth National Seminar on Horticulture June 9-10, 2008 / Nepal Agricultural Research Council (NARC) (Khumaltar, Lalitpur, Nepal)
Title : Enhancing Potato Tuber Production Through the Use of Potassium in Acid Soils of Malepatan, Pokhara Material Type: printed text Authors: Adhikary, Bishnu H., Author ; Madhu S. Ghale, Author Pagination: 140-143 p. Languages : English (eng) Keywords: Basal application, potassium, top-dressing and tuber production Abstract: Field experiments were conducted in an acidic soil to assess the respons.e of
potassium (K20) in potato and its applicatiOf! methods. Six potassium levels (0, 50, 75,
100 kg ha·1 basal application, 50 kg basal plus 50 kg top dressed, and 50 kg basal
plus 50 kg sprayed) were tested to see the effects of potassium levels and methods of
their applications during three consecutive years (2000, 2001 & 2002). A randomized
complete block design (RCBD) with 3 replications was employed in the experiments.
The variety used in the experiment was MS 42. Three years mean results in tuber
production showed that a maximum of 473.33 g plant"' of tubers were produced when
100 kg of potassium was applied basally. Highest tuber yields at 24.75 t ha-1 were
produced when 50 kg potassium was applied basally and 50 kg top- dressed, a total of
100 kg ha- 1• It can be recommended that a total of 100 K20 kg ha·' could be profitable.
Despite very high potassium content there is a response to potassium fertilization.Link for e-copy: http://elibrary.narc.gov.np/?r=235 Enhancing Potato Tuber Production Through the Use of Potassium in Acid Soils of Malepatan, Pokhara [printed text] / Adhikary, Bishnu H., Author ; Madhu S. Ghale, Author . - [s.d.] . - 140-143 p.
in Proceedings of the fifth National Seminar on Horticulture June 9-10, 2008 / Nepal Agricultural Research Council (NARC) (Khumaltar, Lalitpur, Nepal)
Languages : English (eng)
Keywords: Basal application, potassium, top-dressing and tuber production Abstract: Field experiments were conducted in an acidic soil to assess the respons.e of
potassium (K20) in potato and its applicatiOf! methods. Six potassium levels (0, 50, 75,
100 kg ha·1 basal application, 50 kg basal plus 50 kg top dressed, and 50 kg basal
plus 50 kg sprayed) were tested to see the effects of potassium levels and methods of
their applications during three consecutive years (2000, 2001 & 2002). A randomized
complete block design (RCBD) with 3 replications was employed in the experiments.
The variety used in the experiment was MS 42. Three years mean results in tuber
production showed that a maximum of 473.33 g plant"' of tubers were produced when
100 kg of potassium was applied basally. Highest tuber yields at 24.75 t ha-1 were
produced when 50 kg potassium was applied basally and 50 kg top- dressed, a total of
100 kg ha- 1• It can be recommended that a total of 100 K20 kg ha·' could be profitable.
Despite very high potassium content there is a response to potassium fertilization.Link for e-copy: http://elibrary.narc.gov.np/?r=235 E-copies
http://nkcs.org.np/narc/dl/?r=235URL