scholarly journals Management of Nitrogen Through the Use of Leaf Color Chart (LCC) and Soil Plant Analysis Development (SPAD) or Chlorophyll Meter in Rice Under Irrigated Ecosystem

2004 ◽  
Vol 4 ◽  
pp. 838-846 ◽  
Author(s):  
Debtanu Maiti ◽  
D. K. Das ◽  
Tanmoy Karak ◽  
Mahua Banerjee
Keyword(s):  
Plant Analysis ◽  
Leaf Color ◽  
Wet Season ◽  
Available N ◽  
Organic C ◽  
Mean Values ◽  
Color Chart ◽  
Chlorophyll Meter ◽  
N Treatment ◽  
Leaf Color Chart

A field experiment was conducted in a farmer’s field in the district of Nadia, West Bengal, India to study the management of N through leaf color chart (LCC) and soil plant analysis development (SPAD) or chlorophyll meter in rice (cv. IET-4094) during the Kharif (wet season) of 2001–2002 and 2002–2003 by taking the treatment combinations based on different levels of N at fixed schedule and through LCC and SPAD. The experimental soil (0–15 cm) had pH 7.33; organic C 0.43%; available N 408.70 kg ha−1; available P 6.92 kg ha−1; and available K 66.31 kg ha−1. The results of LCC and SPAD or chlorophyll meter for the N management in rice show that values of both LCC and SPAD significantly increased with an increasing level of N. The mean values of LCC and SPAD varied from 3.19–5.31 and 27.36–39.26, respectively, in rice. The results show that the amount of N can be saved as 20–42.5 and 27.5–47.5 kg N ha−1through the use of LCC and SPAD in rice over the fixed-timing N treatment T7where 150 kg N ha−1was applied in three (3) splits without reduction in the yield. The SPAD- and LCC-treated N plot showed higher N-use efficiency over fixed-scheduling N treatment in rice. The results further show that SPAD value of 37 and LCC value of 5 have been proved to be superior treatments over SPAD (35) and LCC (4) for the best management of N in rice in an Inceptisol.

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

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

2002 ◽  
Vol 94 (4) ◽  
pp. 821 ◽  
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

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.

Greenhouse gas mitigation in rice–wheat system with leaf color chart-based urea application

2011 ◽  
Vol 184 (5) ◽  
pp. 3095-3107 ◽  
Author(s):  
Arti Bhatia ◽  
Himanshu Pathak ◽  
Niveta Jain ◽  
Pawan K. Singh ◽  
Ritu Tomer
Keyword(s):  
Greenhouse Gas ◽  
Greenhouse Gas Mitigation ◽  
Leaf Color ◽  
Color Chart ◽  
Leaf Color Chart
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