Biochar amendment techniques for upland rice production in Northern Laos

The land is an important factor for people whose lives depend on the agricultural sector. The need for land for various uses has resulted in decreasing agricultural land which could have implications for decreasing food production. Alternative options which are expected to increase the potential for food production are the utilization of marginal land. Farmers with marginal land need to manage their production to meet household needs. So it is important to examine the marketable surplus, the level of commercialization, and the carrying capacity of marginal land. The research area was taken by purposive sampling method in Gunungkidul Yogyakarta. The samples taken were upland rice farmer households with the simple random sampling method. The marketable surplus analysis uses a marketable surplus formula, then the percentage is used to determine the level of farm commercialization. The carrying capacity analysis is carried out using the carrying capacity formula. The results showed that farmer households manage rice production by allocating an average of 59.1% for marketed and 40.9% for household consumption. The allocation of marketable surplus is greater than for household consumption, this shows that gogo rice farming households are towards commercially. The marginal land carrying capacity of 0.641 indicates that the land cannot be developed in an expansive and exploratory manner. The implication is in increasing upland rice production on marginal land, namely by an intensification of farming.

Download Full-text

No-till and mulching enhance energy use efficiency and reduce carbon footprint of a direct-seeded upland rice production system

Journal of Cleaner Production ◽

10.1016/j.jclepro.2020.122700 ◽

2020 ◽

Vol 271 ◽

pp. 122700 ◽

Cited By ~ 1

Author(s):

Gulab Singh Yadav ◽

Subhash Babu ◽

Anup Das ◽

K.P. Mohapatra ◽

Raghavendra Singh ◽

...

Keyword(s):

Carbon Footprint ◽

Production System ◽

Energy Use ◽

Upland Rice ◽

Rice Production ◽

Energy Use Efficiency ◽

No Till ◽

Direct Seeded ◽

Use Efficiency

Download Full-text

Environmental group identification for upland rice production in central Brazil

Scientia Agricola ◽

10.1590/s0103-90162011000500005 ◽

2011 ◽

Vol 68 (5) ◽

pp. 540-547 ◽

Cited By ~ 14

Author(s):

Alexandre Bryan Heinemann ◽

Paulo Cesar Sentelhas

Keyword(s):

Upland Rice ◽

Group Identification ◽

Rice Production ◽

Environmental Group ◽

Central Brazil

Download Full-text

An investigation of the effect of biochar application rates on CO2 emissions in soils under upland rice production in southern Guinea Savannah of Nigeria

Heliyon ◽

10.1016/j.heliyon.2020.e05578 ◽

2020 ◽

Vol 6 (11) ◽

pp. e05578

Author(s):

John Olajide Olaniyan ◽

Theophilus Olufemi Isimikalu ◽

Bashiru Ademola Raji ◽

Kehinde Olayemi Affinnih ◽

Sikiru Yusuf Alasinrin ◽

...

Keyword(s):

Co2 Emissions ◽

Upland Rice ◽

Rice Production ◽

Application Rates

Download Full-text

Seed Diversity and Utilization of the Upland Rice Landraces and Traditional Varieties from Selected Areas in Bukidnon, Philippines

IAMURE International Journal of Ecology and Conservation ◽

10.7718/ijec.v4i1.366 ◽

2012 ◽

Vol 4 (1) ◽

Author(s):

Joy M. Jamago ◽

Rosemarie V. Cortes

Keyword(s):

Upland Rice ◽

Low Cost ◽

Plant Genetic Resources ◽

Cultural Beliefs ◽

Rice Production ◽

Rice Landraces ◽

San Fernando ◽

Ecosystem Diversity ◽

Chemical Inputs ◽

Diversity Estimates

Enhancing upland rice production is one solution to achieve rice sufficiency in the country. Improved genotypes contribute to this goal at a relatively low cost to farmers, but available resources need to be assessed first. This study determined the availability of upland rice landraces and traditional varieties (URLTVs) in selected areas of Bukidnon, estimated the seed diversity of available genotypes, and documented their use. Twenty-four Barangays from 10 municipalities and 2 cities were surveyed from November 2010 to May 2011. Interviews (n=45), seed sourcing, and evaluation of 13 seed traits were done. One hundred forty URLTVs were collected, of which 82 (59%) were from San Fernando, Bukidnon whose peoples were mostly of the Matigsalug tribe. Shannon-Weaver Diversity estimates for 100 seed weight, grain length and width, grain thickness, caryopsis length and width, and lemma: apiculus color showed high diversity (H’=0.76 to 0.88). URLTVs were grown for household consumption, church offering and for special occasions, and to reduce chemical inputs. For the Matigsalugs, their URLTVS serve to strengthen their cultural beliefs and are trademarks for their tribal group. Collection from other areas of Bukidnon needs to be done to ascertain other available germplasm and possible threats to these plant genetic resources. Keywords - plant genetics, Oryza sativa, agro-ecosystem diversity, rice production, upland rice, Bukidnon, Philippines

Download Full-text

Carbon footprint of rice production under biochar amendment - a case study in a Chinese rice cropping system

GCB Bioenergy ◽

10.1111/gcbb.12248 ◽

2015 ◽

Vol 8 (1) ◽

pp. 148-159 ◽

Cited By ~ 24

Author(s):

Qi Liu ◽

Benjuan Liu ◽

Per Ambus ◽

Yanhui Zhang ◽

Veronika Hansen ◽

...

Keyword(s):

Carbon Footprint ◽

Cropping System ◽

Rice Production ◽

Biochar Amendment

Download Full-text

Soil fertility management for organic rice production in the Lao PDR

Renewable Agriculture and Food Systems ◽

10.1079/raf2006161 ◽

2006 ◽

Vol 21 (4) ◽

pp. 253-260 ◽

Cited By ~ 3

Author(s):

W. Roder ◽

S. Schürmann ◽

P. Chittanavanh ◽

K. Sipaseuth ◽

M. Fernandez

Keyword(s):

Soil Fertility ◽

Green Manure ◽

Crop Residues ◽

Production Systems ◽

Upland Rice ◽

Lao Pdr ◽

Rice Production ◽

Inorganic Fertilizer ◽

Fertility Management ◽

Organic Rice

AbstractRice is the most important agricultural commodity of the Lao People's Democratic Republic (Lao PDR), produced largely using traditional methods with limited inputs of fertilizers and other chemicals. The country has a wide diversity in rice production systems and rice varieties, with over 3000 different varieties recorded. The rich diversity and the production environment and methods are favorable for organic rice production. Investigations were carried out to describe soil fertility conditions, management practices, opportunities and problems associated with organic production methods for rice. Soils used for rice production are mostly of low fertility, with low organic matter and N-availability. In spite of this, virtually no fertilizer inputs are used for upland rice production. Inorganic fertilizer inputs for lowland rice production have increased rapidly over the past decade, but are still below 20 kg ha−1. The most important nutrient sources are rice straw and manure from buffalo and cattle. Chromolaena odorata plays an important role in nutrient cycling in upland rice systems and is sometimes added to lowland fields. In a range of fertility management studies, yield increase ranged from 2 to 89% for manure, straw or rice husk applied at modest rates (3 t ha−1), 32–156% for modest rates of inorganic fertilizer (60 kg N ha−1) and 36–167% for combined application of manure or crop residues with inorganic fertilizer. The response to locally produced commercial organic fertilizer was poor. The most promising inputs and strategies available to optimize yields in organic rice production systems are (1) optimizing use of locally available nutrients, mostly from manure, crop residues and weed biomass, (2) N addition through green manure and legumes growing in rotation and (3) additions of P through guano or rock-phosphate. The Lao PDR is fortunate to have substantial bat guano deposits in limestone caves. Extensive experience is available on straw and husk management for lowland systems and green manure species for upland production systems.

Download Full-text