Leaf Color Chart for Managing Nitrogen Fertilizer in Lowland Rice in Bangladesh

2005 ◽  
Vol 97 (3) ◽  
pp. 949-959 ◽  
Author(s):  
M. Murshedul Alam ◽  
J. K. Ladha ◽  
S. Rahman Khan ◽  
Foyjunnessa ◽  
Harun-ur-Rashid ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Lowland Rice ◽  
Leaf Color ◽  
Color Chart ◽  
Leaf Color Chart

scholarly journals Some Aspects of Nitrogen Management and Its Real Time Application in Direct Seeded Rice Using Leaf Color Chart

2018 ◽  
Vol 6 (2) ◽  
pp. 81-86
Author(s):  
Purushottam Subedi ◽  
Salina Panta
Keyword(s):  
Real Time ◽  
Nitrogen Fertilizer ◽  
Nitrogen Loss ◽  
Management Strategies ◽  
Nitrogen Management ◽  
Rice Crop ◽  
Leaf Color ◽  
Color Chart ◽  
Direct Seeded ◽  
Leaf Color Chart

Proper application of nitrogen (N) fertilizer is vital to improve the growth and grain yield of rice crop. As there prevails more aerobic period in direct seeded rice, nitrogen loss is generally more in such environment. Therefore, nitrogen recommendation for direct seeded rice is slightly higher (22.5-30 Kg ha-1) than that under the transplanted rice. Insufficient and/or inappropriate nitrogen fertilizer application is highly critical to the crops. Optimal nitrogen management strategies aim at matching the nitrogen fertilizer supply to the actual crop demand. Leaf color is generally used as a visual and subjective indicator of the rice crop need for nitrogen fertilizer. The Leaf Color Chart is a simple and inexpensive tool for real time nitrogen management in rice. It helps farmers to improve their decision-making process in nitrogen management. It provides the idea of when and how much nitrogen fertilizer to apply based on relative greenness of the rice leaf. In overall, LCC based nitrogen management improves productivity and profitability of the rice crop by nitrogen saving and ensuring its higher use efficiency.Int. J. Appl. Sci. Biotechnol. Vol 6(2): 81-86

scholarly journals Nitrogen Fertilizer Recommendation for Paddies through Automating the Leaf Color Chart (LCC)

2020 ◽  
Vol 11 (8) ◽  
Author(s):  
Torikul Islam ◽  
Rafsan Uddin ◽  
Yeasir Arefin ◽  
Md Shafiuzzaman ◽  
Md. Alam ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Leaf Color ◽  
Color Chart ◽  
Fertilizer Recommendation ◽  
Leaf Color Chart

scholarly journals UPAYA EFISIENSI DAN PENINGKATAN KETERSEDIAAN NITROGEN DALAM TANAH SERTA SERAPAN NITROGEN PADA TANAMAN PADI SAWAH ( Oryza sativa L.)

BUANA SAINS ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 171
Author(s):  
Edi Tando
Keyword(s):  
Oryza Sativa ◽  
Plant Growth ◽  
Oryza Sativa L ◽  
Soil Health ◽  
Lowland Rice ◽  
Leaf Color ◽  
Color Chart ◽  
Synthetic Chemicals ◽  
Leaf Color Chart ◽  
The Right

Nutrients or nutrients are important factors for plant growth which can be likened to food substances for plants. One of the factors that support plants to grow and produce optimally is the availability of nutrients in sufficient quantities in the soil. The elements N, P and K, have a very important role in plant growth and production. The purpose of the preparation of the paper is to provide information about efforts to improve efficiency and availability of nitrogen in the soil and nitrogen uptake in lowland rice plants (Oryza sativa L.) Nitrogen has a role as a constituent of enzymes which plays a large role in plant metabolism but is relatively not available to plants. The efficiency of the use of Nitrogen (N) fertilizer in lowland rice can be maximized by way of 1) timely fertilization, 2) planting superior varieties that are responsive to the administration of Nitrogen (N), 3) improving cultivation techniques, 4) regulating the timing of Nitrogen fertilizer (N ) the right during the growing season with Leaf Color Chart (LCC) or Leaf Color Chart (BWD) and 5) NPK fertilization simultaneously. Efforts to increase the availability of nitrogen in the soil and uptake in wetland rice can be done by adding high-quality organic matter, the use of Azotobacter isolates as biological fertilizers to reduce the decrease in soil health due to the input of synthetic chemicals.

scholarly journals Assessing Productivity and Profitability of Hybrid Rice With Site Specific Nutrient Management in Mid Western Terai, Nepal

2019 ◽  
Vol 7 (2) ◽  
pp. 1 ◽  
Author(s):  
Samikshya Acharya ◽  
Binita Mahara ◽  
Lal Prasad Amgain ◽  
Krishna Aryal ◽  
Bishnu l Prasad Kande
Keyword(s):  
Growth Rate ◽  
Management Practices ◽  
Nutrient Management ◽  
Hybrid Rice ◽  
Leaf Color ◽  
Site Specific ◽  
Color Chart ◽  
Straw Yield ◽  
Yield Difference ◽  
Leaf Color Chart

Rice (Oryza sativa L.) is a dominant staple food crop of Nepal which production and productivity is significantly declining compared to several years due to inappropriate nutrient management practices. A field experiment was conducted at Lamahi, Dang to evaluate the performance of hybrid rice(US-305) under rain fed condition with five precision nutrient management practices [Viz: Nutrient Expert® -Rice (NE) recommendation; Leaf Color Chart (LCC) N and Nutrient Expert (P and K); Nutrient Expert (N) and Farmers Fertilizer Practices (P and K); Farmers Fertilizer Practices (FFP) and Government Recommendation (GR)] replicated four times in RCBD design during June to October, 2018. The experimental finding showed that SSNM based Nutrient Expert® -Rice (NE) recommendation gave higher grain yield (6.36 ton ha-1) and straw yield (12.62 ton ha-1) which leads to highest gross return (NRs 242,498) and B: C ratio(3.08). Between the treatments Nutrient Expert® -Rice (NE) recommendation was excellent to growth parameters like plant height, crop growth rate, relative growth rate and leaf area index over FFP. Further, Nutrient Expert® -Rice (NE) recommendation gave significantly higher effective tiller m-2(354.50), panicle length (26.31), panicle weight (81.50), filled grain (390) and fertility (87.56%) over FFP. Nutrient Expert® -Rice (NE) recommendation has increased the grain yield by 23.97% with yield difference of 1.23 ton ha-1 and straw yield by 39.44 % with yield difference of 3.57 ton ha-1 in comparison with FFP. Hence the experiment concluded that site specific nutrient management recommendation that accounts Nutrient Expert® -Rice and leaf color chart could be the practical decision tool for making authentic fertilizer recommendation.

scholarly journals INTRODUCING LEAF COLOR CHART IN AGRICULTURE OF SINDH

2015 ◽  
Vol 1 (1) ◽  
pp. 19
Author(s):  
Shah leghari ◽  
Umeed leghari ◽  
Mehmooda Burriro ◽  
Aijaz Soomro
Keyword(s):  
Leaf Color ◽  
Color Chart ◽  
Leaf Color Chart

Factors influencing adoption of climate resilient paddy production practices in Andhra Pradesh, India

2020 ◽  
Vol 57 (3) ◽  
pp. 240-250
Author(s):  
Amtul Waris ◽  
N Sunder Rao
Keyword(s):  
Andhra Pradesh ◽  
Crop Insurance ◽  
Weather Forecast ◽  
Market Demand ◽  
Leaf Color ◽  
Color Chart ◽  
Drought Tolerant ◽  
Factors Influencing ◽  
Leaf Color Chart ◽  
Production Practices

This paper examined the factors affecting adoption of climate resilient practices in paddy production using data collected from farmers of Andhra Pradesh during the year 2019. Majority of the farmers reported increase in temperature, unpredictability in weather, reduced duration of winter, uneven and irregular rainfall as the climatic change events. The practices being followed by farmers which fit the adaptation criteria were timely sowing and weeding, proper spacing and formation of soil bunds. The climate resilient practices most preferred and prioritized by paddy farmers were direct sown rice, drought tolerant varieties, weather forecast services, integrated nutrient management, growing of green manure crops followed by crop diversification, crop insurance, system of rice intensification (SRI) and use of leaf color chart. Market demand, assured irrigation, land fertility, and availability of finance were the major factors governing the decision to grow crops. The educational level of farmers exhibited significant and positive correlation with practices namely SRI, use of leaf color chart, crop insurance, weather forecast services and drought tolerant varieties. Analysis of factors influencing the adoption of climate resilient paddy production practices would help to promote and disseminate these practices to increase the adoption rate and also aid in the framing of appropriate policies.

Chlorophyll Meter– and Leaf Color Chart–Based Nitrogen Management for Rice and Wheat in Northwestern India

2002 ◽  
Vol 94 (4) ◽  
pp. 821-829 ◽  
Author(s):  
Bijay Singh ◽  
Yadvinder Singh ◽  
Jagdish K. Ladha ◽  
Kevin F. Bronson ◽  
Vethaiya Balasubramanian ◽  
...  
Keyword(s):  
Nitrogen Management ◽  
Leaf Color ◽  
Color Chart ◽  
Chlorophyll Meter ◽  
Northwestern India ◽  
Leaf Color Chart
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