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

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

Need-Based Nitrogen Management Using Leaf Color Chart in Wet Direct-Seeded Rice in Northwestern India

2006 ◽  
Vol 8 (1) ◽  
pp. 35-47 ◽  
Author(s):  
Bijay Singh ◽  
R. K. Gupta ◽  
Yadvinder Singh ◽  
S. K. Gupta ◽  
Jagmohan Singh ◽  
...  
Keyword(s):  
Nitrogen Management ◽  
Leaf Color ◽  
Color Chart ◽  
Northwestern India ◽  
Direct Seeded ◽  
Leaf Color Chart

On-farm evaluation of leaf color chart for need-based nitrogen management in irrigated transplanted rice in northwestern India

2007 ◽  
Vol 78 (2) ◽  
pp. 167-176 ◽  
Author(s):  
Yadvinder-Singh ◽  
Bijay-Singh ◽  
Jagdish K. Ladha ◽  
Jaswinder S. Bains ◽  
Rajeev K. Gupta ◽  
...  
Keyword(s):  
Nitrogen Management ◽  
Leaf Color ◽  
Color Chart ◽  
Northwestern India ◽  
Transplanted Rice ◽  
Leaf Color Chart ◽  
On Farm

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

Calibrating the Leaf Color Chart for Nitrogen Management in Different Genotypes of Rice and Wheat in a Systems Perspective

2004 ◽  
Vol 96 (6) ◽  
pp. 1606-1621 ◽  
Author(s):  
Arvind K. Shukla ◽  
Jagdish K. Ladha ◽  
V. K. Singh ◽  
B. S. Dwivedi ◽  
Vethaiya Balasubramanian ◽  
...  
Keyword(s):  
Nitrogen Management ◽  
Leaf Color ◽  
Color Chart ◽  
Systems Perspective ◽  
Leaf Color Chart

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.

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