The soil fertility effects of leguminous ley pastures in north-east Thailand. I. Effects on the growth of roselle (Hibiscus sabdarrifa c.v. Altissima) and cassava (Manihot esculenta)

Gibson T.A. and Waring S.A. (1994) The soil fertility effects of leguminous ley pastures in north-east Thailand. I. Effects on the growth of roselle (Hibiscus sabdarrifa c.v. Altissima) and cassava (Manihot esculenta). Field Crops Research, 39 2-3: 119-127. doi:10.1016/0378-4290(94)90014-0


Author Gibson T.A.
Waring S.A.
Title The soil fertility effects of leguminous ley pastures in north-east Thailand. I. Effects on the growth of roselle (Hibiscus sabdarrifa c.v. Altissima) and cassava (Manihot esculenta)
Journal name Field Crops Research   Check publisher's open access policy
ISSN 0378-4290
Publication date 1994-01-01
Sub-type Article (original research)
DOI 10.1016/0378-4290(94)90014-0
Volume 39
Issue 2-3
Start page 119
End page 127
Total pages 9
Subject 1102 Cardiovascular Medicine and Haematology
1110 Nursing
Abstract The effect of ley treatments (mostly grazed) differing in legume species, duration of ley and non-nitrogenous fertilization on the growth of cassava and roselle is reported. Experiments were conducted in upland fields of farmers at Khon Kaen, Thailand. Soils at the experimental site range from paleustults to quartzipsamments with a loamy-sand surface and are extremely infertile. Treatments included cassava and weed-fallow controls, and monospecific legume swards of Siratro (Macroptilium atropurpureum cv. Siratro), Verano (Stylosanthes hamata cv. Verano), mimosa (Mimosa invisa var. inermis) and crotalaria (Crotalaria juncea) grown for 1, 2 or 3 years, or intercropped with cassava, or grown alone in alternate years with cassava followed by test crops of roselle and cassava. Treatments were with and without non-nitrogenous fertilizer. Yields for the first crop (roselle) in almost all fertilized legume plots were significantly higher than for the fertilized cassava control whereas in unfertilized plots there was no significant effect. Yields were highest in comparable fertilized plots following Verano or Siratro with crotalaria intermediate and mimosa the lowest. Yields were highest for fertilized two- and three-year Verano and Siratro plots and lower for fertilized one-year, alternating years or intercropped plots. Yields for the second test crop (cassava) again showed a substantial increase in most of the fertilized legume plots compared with the cassava control with results generally similar to those for the first test crop. The test crop data show Verano and Siratro as the best ley species and suggest an optimum ley period in the range of one to two years with a cropping phase of approximately equivalent duration to the ley phase. The nitrogen fertilizer value of a Siratro ley in the first year of establishment was estimated to be 132 kg N ha-1. Land preparation treatments, following a Siratro ley, of mulching, incorporation and herbicide killing of the legume had no effect on subsequent yield of roselle whereas grazed plots resulted in a lower yield.
Keyword Cassava
Legumes
Pasture
Roselle
Soil fertility
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
Versions
Version Filter Type
Citation counts: Scopus Citation Count Cited 8 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 28 Jun 2016, 10:59:38 EST by System User