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01
Aug

What is the use of LCC?

  • Farmers can determine the right time of application of N fertilizer by matching the leaf color with the color strip of LCC.
  • Farmers can decide on N fertilizer application, when leaf color measurement falls below the critical value.
01
Aug

What is LCC?

  • LCC is a simple, easy to use and inexpensive tool to more efficiently manage N fertilizer in rice.
  • It is like a ruler about six inches in length, made of high-quality plastic and consists of six color shades from light yellowish green (No. 1) to dark green (No. 6).
  • The color strips are fabricated with veins resembling rice leaves.
01
Aug

Components of SSNM

The following tools and techniques are promoted for proper management of fertilizers.

  • Leaf color chart (LCC) to determine the correct time and amount of N fertilizer application.
  • Omission plot technique to calibrate the P and K fertilizer rate.
01
Aug

Benefits of SSNM

  • increase profit through optimal fertilizer use.
  • sustain soil fertility through balanced application of nutrients (fertilizers).
  • reduce pest and disease incidence through balanced nutrient use.
  • Protect soil, water and environment from contaminations by avoiding excess fertilizer use.
01
Aug

Need of SSNM

The SSNM approach is needed for proper management of fertilizers in rice because

  • soil fertility varies from field to field, the demand for nutrient inputs therefore varies among fields.
  • demand for nutrient inputs varies from season to season, year to year and at different crop growth stages within a season.

 Such variations in soil fertility and demand for nutrients are not effectively handled with blanket fertilizer recommendations, consisting of fixed rat

01
Aug

Site specific nutrient management (ssnm) technology for irrigated rice

Site Specific Nutrient Management (SSNM) is an approach for feeding rice with nutrients as and when needed. The SSNM approach ensures application of fertilizers for location and season-specific conditions. With the SSNM approach, fertilizers are applied

  •  at right time.
  •  in optimum amount.
  •  in the optimum ratio and
  •  with the appropriate method

to meet the deficit between rice demand for nutrients and the supply of nutrients fro

01
Aug

Rice fallow cultivation

Rice + Pigeon pea

Rice + green gram (moong bean)

Rice + Black gram, urd bean

Rice + Black gram

01
Aug

Rice-Groundnut

1. This cropping pattern is being followed by the farmers Tamil Nadu.

2. After harvesting of rice crop, groundnut is grown in summer.

01
Aug

Rice-Rice-Rice

1. This crop rotation is most suitable for areas having high rainfall and assured irrigation facilities in summer months, particularly, in soils which have high water holding capacity and low rate of infiltration.

2. In some canal irrigated areas of Tamil Nadu, a cropping pattern of 300% intensity is followed. In such areas three crops of rice are grown in a year.

01
Aug

Rice and rice based cropping systems

The rice based cropping patterns being followed in the in Tamil Nadu are

1. Rice-Rice-Rice

2. Rice-Groundnut

3. Rice fallow cultivation

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