Agronomics and economics of late blight control in potato in West Java, Indonesia

H.T.A.M. Schepers, N. Gunadi, L. van den Brink, T.K. Moekasan, L. Prabaningrum, A.K. Karjadi, H. de Putter

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

Indonesia is the largest potato producer in Southeast Asia. Late blight (Phythophtora infestans) is one of the most important diseases especially in the rainy season. Therefore, farmers frequently spray fungicides to prevent infection. Forty farmers in West Java were trained in implementing good agricultural practices. To assess the impact of the training, late blight control strategies at the trainees’ fields were recorded. The baseline registration in the dry season of 2013 revealed that on average 16.6 times fungicides were applied. The average spray volume was 919 L ha-1, whereas the recommended spray volume ranges from 400 to 600 L ha-1 depending on the crop stage. Many farmers added an adjuvant to the spray mixture to increase the rainfastness of the fungicides. The fungicide costs ranged from 11.4 to 14.7% of the total production costs. The second registration, wet season of 2013/2014, showed a similar number of applications as in the dry season but the fungicide input was clearly higher due to a higher spray volume of 1,052 L ha-1 and more fungicides per application which caused higher fungicide costs ranging from 4 to 35% of the total production costs. Parallel and supportive to the trainings, three late blight demos were implemented in wet seasons. In the first demo (2013/2014), more recently registered fungicides controlled late blight similarly compared to the fungicide mixture often used by farmers, but they were 10-15% more expensive. In the second (2014/2015) and third demo (2015/2016), again the more recently registered fungicides did not perform better and were more expensive. A 20% reduction in spray volume had a similar effect on late blight control as the farmers’ practice using high volumes. At reduced spray volumes, the use of an adjuvant did increase late blight control. It is estimated that the spray volume can be reduced with 10-20% without loss of efficacy and thus save costs.

Original languageEnglish
Title of host publicationProceedings of the 2nd Asian Horticultural Congress
EditorsY. Du, M. Doi, J. Eek Son
PublisherInternational Society for Horticultural Science
Pages369-373
Number of pages5
ISBN (Print)9789462612051
DOIs
Publication statusPublished - 30 Aug 2018
EventII Asian Horticultural Congress - Chengdu City, China
Duration: 26 Sep 201628 Sep 2016

Publication series

NameActa Horticulturae
Volume1208
ISSN (Print)0567-7572
ISSN (Electronic)2406-6168

Conference

ConferenceII Asian Horticultural Congress
Abbreviated titleAHC2016
CountryChina
CityChengdu City
Period26/09/1628/09/16

Fingerprint

Phytophthora infestans
Indonesia
fungicides
spray volume
potatoes
economics
farmers
wet season
production costs
adjuvants
dry season
good agricultural practices
South East Asia

Keywords

  • Adjuvant
  • Fungicide
  • Phytophthora infestans
  • Solanum tuberosum
  • ‘Atlantic’
  • ‘Granola’

Cite this

Schepers, H. T. A. M., Gunadi, N., van den Brink, L., Moekasan, T. K., Prabaningrum, L., Karjadi, A. K., & de Putter, H. (2018). Agronomics and economics of late blight control in potato in West Java, Indonesia. In Y. Du, M. Doi, & J. Eek Son (Eds.), Proceedings of the 2nd Asian Horticultural Congress (pp. 369-373). (Acta Horticulturae; Vol. 1208). International Society for Horticultural Science. https://doi.org/10.17660/ActaHortic.2018.1208.50
Schepers, H.T.A.M. ; Gunadi, N. ; van den Brink, L. ; Moekasan, T.K. ; Prabaningrum, L. ; Karjadi, A.K. ; de Putter, H. / Agronomics and economics of late blight control in potato in West Java, Indonesia. Proceedings of the 2nd Asian Horticultural Congress. editor / Y. Du ; M. Doi ; J. Eek Son. International Society for Horticultural Science, 2018. pp. 369-373 (Acta Horticulturae).
@inproceedings{c98c69fd587f419c8c127107934347a8,
title = "Agronomics and economics of late blight control in potato in West Java, Indonesia",
abstract = "Indonesia is the largest potato producer in Southeast Asia. Late blight (Phythophtora infestans) is one of the most important diseases especially in the rainy season. Therefore, farmers frequently spray fungicides to prevent infection. Forty farmers in West Java were trained in implementing good agricultural practices. To assess the impact of the training, late blight control strategies at the trainees’ fields were recorded. The baseline registration in the dry season of 2013 revealed that on average 16.6 times fungicides were applied. The average spray volume was 919 L ha-1, whereas the recommended spray volume ranges from 400 to 600 L ha-1 depending on the crop stage. Many farmers added an adjuvant to the spray mixture to increase the rainfastness of the fungicides. The fungicide costs ranged from 11.4 to 14.7{\%} of the total production costs. The second registration, wet season of 2013/2014, showed a similar number of applications as in the dry season but the fungicide input was clearly higher due to a higher spray volume of 1,052 L ha-1 and more fungicides per application which caused higher fungicide costs ranging from 4 to 35{\%} of the total production costs. Parallel and supportive to the trainings, three late blight demos were implemented in wet seasons. In the first demo (2013/2014), more recently registered fungicides controlled late blight similarly compared to the fungicide mixture often used by farmers, but they were 10-15{\%} more expensive. In the second (2014/2015) and third demo (2015/2016), again the more recently registered fungicides did not perform better and were more expensive. A 20{\%} reduction in spray volume had a similar effect on late blight control as the farmers’ practice using high volumes. At reduced spray volumes, the use of an adjuvant did increase late blight control. It is estimated that the spray volume can be reduced with 10-20{\%} without loss of efficacy and thus save costs.",
keywords = "Adjuvant, Fungicide, Phytophthora infestans, Solanum tuberosum, ‘Atlantic’, ‘Granola’",
author = "H.T.A.M. Schepers and N. Gunadi and {van den Brink}, L. and T.K. Moekasan and L. Prabaningrum and A.K. Karjadi and {de Putter}, H.",
year = "2018",
month = "8",
day = "30",
doi = "10.17660/ActaHortic.2018.1208.50",
language = "English",
isbn = "9789462612051",
series = "Acta Horticulturae",
publisher = "International Society for Horticultural Science",
pages = "369--373",
editor = "Y. Du and M. Doi and {Eek Son}, J.",
booktitle = "Proceedings of the 2nd Asian Horticultural Congress",

}

Schepers, HTAM, Gunadi, N, van den Brink, L, Moekasan, TK, Prabaningrum, L, Karjadi, AK & de Putter, H 2018, Agronomics and economics of late blight control in potato in West Java, Indonesia. in Y Du, M Doi & J Eek Son (eds), Proceedings of the 2nd Asian Horticultural Congress. Acta Horticulturae, vol. 1208, International Society for Horticultural Science, pp. 369-373, II Asian Horticultural Congress, Chengdu City, China, 26/09/16. https://doi.org/10.17660/ActaHortic.2018.1208.50

Agronomics and economics of late blight control in potato in West Java, Indonesia. / Schepers, H.T.A.M.; Gunadi, N.; van den Brink, L.; Moekasan, T.K.; Prabaningrum, L.; Karjadi, A.K.; de Putter, H.

Proceedings of the 2nd Asian Horticultural Congress. ed. / Y. Du; M. Doi; J. Eek Son. International Society for Horticultural Science, 2018. p. 369-373 (Acta Horticulturae; Vol. 1208).

Research output: Chapter in Book/Report/Conference proceedingConference paper

TY - GEN

T1 - Agronomics and economics of late blight control in potato in West Java, Indonesia

AU - Schepers, H.T.A.M.

AU - Gunadi, N.

AU - van den Brink, L.

AU - Moekasan, T.K.

AU - Prabaningrum, L.

AU - Karjadi, A.K.

AU - de Putter, H.

PY - 2018/8/30

Y1 - 2018/8/30

N2 - Indonesia is the largest potato producer in Southeast Asia. Late blight (Phythophtora infestans) is one of the most important diseases especially in the rainy season. Therefore, farmers frequently spray fungicides to prevent infection. Forty farmers in West Java were trained in implementing good agricultural practices. To assess the impact of the training, late blight control strategies at the trainees’ fields were recorded. The baseline registration in the dry season of 2013 revealed that on average 16.6 times fungicides were applied. The average spray volume was 919 L ha-1, whereas the recommended spray volume ranges from 400 to 600 L ha-1 depending on the crop stage. Many farmers added an adjuvant to the spray mixture to increase the rainfastness of the fungicides. The fungicide costs ranged from 11.4 to 14.7% of the total production costs. The second registration, wet season of 2013/2014, showed a similar number of applications as in the dry season but the fungicide input was clearly higher due to a higher spray volume of 1,052 L ha-1 and more fungicides per application which caused higher fungicide costs ranging from 4 to 35% of the total production costs. Parallel and supportive to the trainings, three late blight demos were implemented in wet seasons. In the first demo (2013/2014), more recently registered fungicides controlled late blight similarly compared to the fungicide mixture often used by farmers, but they were 10-15% more expensive. In the second (2014/2015) and third demo (2015/2016), again the more recently registered fungicides did not perform better and were more expensive. A 20% reduction in spray volume had a similar effect on late blight control as the farmers’ practice using high volumes. At reduced spray volumes, the use of an adjuvant did increase late blight control. It is estimated that the spray volume can be reduced with 10-20% without loss of efficacy and thus save costs.

AB - Indonesia is the largest potato producer in Southeast Asia. Late blight (Phythophtora infestans) is one of the most important diseases especially in the rainy season. Therefore, farmers frequently spray fungicides to prevent infection. Forty farmers in West Java were trained in implementing good agricultural practices. To assess the impact of the training, late blight control strategies at the trainees’ fields were recorded. The baseline registration in the dry season of 2013 revealed that on average 16.6 times fungicides were applied. The average spray volume was 919 L ha-1, whereas the recommended spray volume ranges from 400 to 600 L ha-1 depending on the crop stage. Many farmers added an adjuvant to the spray mixture to increase the rainfastness of the fungicides. The fungicide costs ranged from 11.4 to 14.7% of the total production costs. The second registration, wet season of 2013/2014, showed a similar number of applications as in the dry season but the fungicide input was clearly higher due to a higher spray volume of 1,052 L ha-1 and more fungicides per application which caused higher fungicide costs ranging from 4 to 35% of the total production costs. Parallel and supportive to the trainings, three late blight demos were implemented in wet seasons. In the first demo (2013/2014), more recently registered fungicides controlled late blight similarly compared to the fungicide mixture often used by farmers, but they were 10-15% more expensive. In the second (2014/2015) and third demo (2015/2016), again the more recently registered fungicides did not perform better and were more expensive. A 20% reduction in spray volume had a similar effect on late blight control as the farmers’ practice using high volumes. At reduced spray volumes, the use of an adjuvant did increase late blight control. It is estimated that the spray volume can be reduced with 10-20% without loss of efficacy and thus save costs.

KW - Adjuvant

KW - Fungicide

KW - Phytophthora infestans

KW - Solanum tuberosum

KW - ‘Atlantic’

KW - ‘Granola’

U2 - 10.17660/ActaHortic.2018.1208.50

DO - 10.17660/ActaHortic.2018.1208.50

M3 - Conference paper

SN - 9789462612051

T3 - Acta Horticulturae

SP - 369

EP - 373

BT - Proceedings of the 2nd Asian Horticultural Congress

A2 - Du, Y.

A2 - Doi, M.

A2 - Eek Son, J.

PB - International Society for Horticultural Science

ER -

Schepers HTAM, Gunadi N, van den Brink L, Moekasan TK, Prabaningrum L, Karjadi AK et al. Agronomics and economics of late blight control in potato in West Java, Indonesia. In Du Y, Doi M, Eek Son J, editors, Proceedings of the 2nd Asian Horticultural Congress. International Society for Horticultural Science. 2018. p. 369-373. (Acta Horticulturae). https://doi.org/10.17660/ActaHortic.2018.1208.50