scholarly journals Improvement of Soil Fertility with Use of Indigenous Resources in Lowland Rice Systems

10.5772/53209 ◽  
2012 ◽  
Author(s):  
Satoshi Nakamura ◽  
Roland Nuhu ◽  
Israel K. ◽  
Monrawee Fukuda ◽  
Mohammed Moro ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Lowland Rice

EVALUATION OF ON-FARM SOIL FERTILITY RESEARCH IN THE RAINFED LOWLAND RICE FIELDS OF SUKUMALAND, TANZANIA

2003 ◽  
Vol 39 (1) ◽  
pp. 65-79 ◽  
Author(s):  
H. C. C. MEERTENS ◽  
G. J. KAJIRU ◽  
L. J. NDEGE ◽  
H. J. ENSERINK ◽  
J. BROUWER
Keyword(s):  
Soil Fertility ◽  
Phosphorus Deficiency ◽  
Rice Fields ◽  
Lowland Rice ◽  
High Dose ◽  
Research Approach ◽  
Field Environment ◽  
Rainfed Lowland ◽  
Rice Yields ◽  
On Farm

The first ever on-farm soil fertility research in the rainfed lowland rice (Oryza sativa) fields of Sukumaland, in northwest Tanzania, was carried out between 1990 and 1996 in response to farmers' complaints about declining rice yields. From diagnosis to extension, the research approach followed that of the International Maize and Wheat Improvement Center (CIMMYT). In 1990/91, rice yields in the Maswa district increased sharply when nitrogen at a rate of 30 kg ha−1 in the form of urea was broadcast in flooded rice fields at tillering. Similar research was subsequently conducted in other parts of Sukumaland to evaluate this type of low-dose nitrogen application under varying circumstances. In 1995/96, higher doses of nitrogen (60 and 120 kg ha−1) and a high dose of phosphorus (17.5 kg ha−1) were applied for comparison in Sengerema district. Between 1990 and 1996, the average increase in rice yield from the application of 30 kg N ha−1 varied between 463 and 986 kg ha−1. In 1995/96, the same application of N was more economical than both 60 and 120 kg N ha−1, and no phosphorus deficiency was found. The deteriorating ratio between the price of rice at the farm gate and that of urea, however, threatens the adoption of this technology by farmers. Adaptability analysis showed that the relatively small differences in response per field (environment) in all years did not justify a need for multiple different extension messages. Until more detailed recommendations can be made, therefore, a single dose of 30 kg N ha−1, in the form of urea, applied to rice at tillering is recommended for the whole of Sukumaland to reverse the decline in yields. Further on-farm research should concentrate on improving the efficiency of nitrogen fertilization and on determining the optimum rates of other major nutrients to refine this initial recommendation.

scholarly journals POTENTIAL OF LOSS OF ORGANIC FERTILIZER IN LOWLAND RICE FARMING IN KLUNGKUNG DISTRICT, BALI

2020 ◽  
Vol 3 (2) ◽  
pp. 179-185
Author(s):  
I Nengah Muliarta ◽  
Jhon Hardy Purba
Keyword(s):  
Soil Fertility ◽  
Rice Straw ◽  
Organic Fertilizer ◽  
Rice Paddy ◽  
Rice Cultivation ◽  
Lowland Rice ◽  
Rice Farming ◽  
Knowing How ◽  
Paddy Farmers ◽  
The Impact

Rice straw is an abundant resource that was still seen as a waste in intensive rice cultivation. Rice straw is said to be a resource because it can be used as organic fertilizer (compost) and contains nutrients that were beneficial for crop growth and soil fertility. The fact in the field was still found that rice straw was wasted, one of which was burned. A study was conducted through a method of observation and survey involving rice paddy farmers in 3 sub-districts in the district of Klungkung, namely Banjarangkan, Klungkung and Dawan. The aim of the research was to know the production of rice straw waste and the potential of wasted organic fertilizer in intensive rice cultivation. Based on the results obtained the production of dried straw waste in each harvest about 10.21 tons/ha.  Farmers do not utilize rice straw as compost by reason, not knowing how to composting. There were 30.34% of farmers who burn straw because based on the knowledge gained burn is an easy way to restore rice straw to the ground. The impact of burning rice straw was around 5,887,086 - 7,888.7 tons of organic fertilizer wasted.

scholarly journals Pengaruh Teknologi Pemupukan terhadap Kualitas Tanah, Pertumbuhan dan Hasil Padi Varitas Ciherang yang Ditanam pada Sawah Bukaan Baru di Dusun Kleseleon, Kabupaten Malaka, Nusa Tenggara Timur

2019 ◽  
Vol 8 (1) ◽  
pp. 1-10
Author(s):  
Sukristiyonubowo Sukristiyonubowo ◽  
Damasus Riyanto ◽  
Sugeng Widodo
Keyword(s):  
Soil Fertility ◽  
Soil Quality ◽  
Organic Fertilizer ◽  
Major Elements ◽  
Rice Fields ◽  
Lowland Rice ◽  
Organic C ◽  
Rice Growth ◽  
Acid Sulphate Soils ◽  
K Fertilizer

Sukristiyonubowo et al, 2019. The Influence of Fertilizer Technologies on Soil Quality, Rice Growth and Biomass Production of Ciherang Vareity Cultivated in Newly Developed Lowland Rice Fields of Kleseleon, Malaka District. JLSO 8(1):1-10.Highly weathered and potential acid sulphate soils are granted for newly developed lowland rice. They have many short comings including low in major elements and Fe and Mn in toxic levels. Study on soil fertility, rice growth and biomass productions of Ciherang variety planted in newly developed lowland rice was conducted in Kleseleon Village, Malaka District in 2014. The aim of study was to know the effect of technologies on soil fertility properties, rice growth and biomass productions.The experiment was started in February 2014 and harvested in June 2014. Five promising treatments were studied including: Farmers Practices, Package A : NPK recommended rate + 3 tons compost, Package B : NPK recommended rate + 2 tons compost + Bio fertilizer, Package C: ¾ recommended rate + 3 tons compost + Bio fertilizer and Package D: NPK recommended rate + 2 tons compost + Bio fertilizer, in which N, P and K were split two times: 50 % given at planting time and 50 % at 21 DAP. Two kilo gram composite soils from five points and ring samples of 0-20 cm in depth were taken in February 2014 for analyzing chemical, physical and biological parameters, before soil ploughing. The results indicated that the soil quality of newly developed low land rice fields in Kleseleon was low. These technologies increased the soil fertility including soil pH, soil organic C, available P and K extracted with HCl 25 %. In addition, the best technology was observed in package B (NPK Recommendation rate + 2 tons organic fertilizer + Bio fertilizer/SMART, in which N and K fertilizer were applied 3 times: 50 % at planting, 25 % at 21 HST and 25% before flowering) for tillers number and rice biomass productions. The yield reached 5.88 ± 0.29 and 4.84 ± 0.47 tons ha-1 season-1 for rice grains and rice straw, respectively.

scholarly journals Productivity and soil fertility of rainfed lowland rice (Oryza sativa) as influenced by establishment and weed management

2020 ◽  
pp. 432-436
Author(s):  
KEVIZHALHOU KUOTSU
Keyword(s):  
Soil Fertility ◽  
Nutrient Uptake ◽  
Weed Management ◽  
Field Experiments ◽  
Lowland Rice ◽  
System Of Rice Intensification ◽  
Residual Soil ◽  
Nutrient Depletion ◽  
Rainfed Lowland ◽  
Hand Weeding

Field experiments were conducted during kharif season of 2016 and 2017 at the experimental farm of SASRD, Nagaland University, Medziphema to evaluate the effect of establishment methods and weed management on productivity, nutrient uptake, nutrient harvest index (NHI) and residual soil fertility of rainfed lowland rice. Three establishment techniques and six weed management practices were evaluated in split plot design with three replications. Results revealed higher grain (4.24 t ha-1) and straw (5.88 t ha-1) yield, nutrient uptake by grain (53.1, 13.8 and 10.7 kg NPK ha-1) and straw (32.3, 6.2 and 48.8 kg NPK ha-1); available nutrients in post harvest soil (332.5, 20.7 and 12.3 kg NPK ha-1) under system of rice intensification (SRI) whereas conventionally transplanted rice (CTR) recorded least values. Minimum weed dry matter (158.4 g m-2) and nutrient depletion (11.3, 1.9 and 19.9 kg NPK ha-1) was recorded in integrated crop management (ICM) while maximum was observed in SRI. Among the weed management methods, significantly lower weed dry weight (103.4 g m-2), nutrient depletion (7.4, 1.3 and 12.9 kg NPK ha-1) and higher grain (4.59 t ha-1) and straw (6.30 t ha-1) yield was observed under hand weeding (HW) twice at 20 and 40 days after transplanting (DAT). Nutrient depletion by grasses was observed to be higher as compared to sedges and broad leaved weeds. Weed control increased nutrient uptake by rice and decreased nutrient uptake by weeds. Hand weeding at 20 and 40 DAT recorded highest grain yield which was 81% higher over weedy check.

scholarly journals Organic Versus Inorganic Management on the Yield and Soil Fertility of Irrigated Lowland Rice

2014 ◽  
pp. 32-49 ◽  
Author(s):  
Michelle Quimbo ◽  
Cezar Mamaril ◽  
Kathy Loren Tafere
Keyword(s):  
Soil Fertility ◽  
Yield Components ◽  
Management Practices ◽  
Organic Fertilizer ◽  
Lowland Rice ◽  
Organic Fertilizers ◽  
Conventional Farming ◽  
Inorganic Fertilizers ◽  
Limiting Nutrients ◽  
Organic And Inorganic Fertilizers

Organic farming is being promoted by advocates to sustain and improve soil fertility compared to conventional farming that uses inorganic fertilizers and pesticides. The study was conducted to determine the effect of pesticide and fertilizer management practices on grain and straw yields, yield components, and soil fertility of irrigated lowland rice. The experiment was conducted for three consecutive seasons (2009-2010) at Los Baños, Laguna, Philippines. It was laid out in a Split Plot design consisting of two main plots: with pesticides (M1) and without pesticides (M2), and four subplots: control (T1), organic fertilizer only (T2), inorganic fertilizer only (T3), and one-half (½) rate of inorganic plus ½ rate of organic fertilizers (T4), with four replications. Generally, pesticide application did not affect the yield and yield components. Plots applied with inorganic and one-half rate of combined organic and inorganic fertilizers had significantly higher grain yields than the control and organic only fertilizer treatments. Application of limiting nutrients through inorganic fertilizers helps to correct most of soil deficiencies such as phosphorus and sulfur compared to the use of organic fertilizer alone. Combining organic materials such as compost and rice straw with inorganic fertilizers at one-half rates is an effective strategy to attain yields comparable to pure inorganic application to sustain soil fertility.

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